*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2012, Whamcloud, Inc.
+ * Copyright (c) 2012, 2014 Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*
- * lustre/ofd/ofd.c
+ * lustre/ofd/ofd_dev.c
+ *
+ * This file contains OSD API methods for OBD Filter Device (OFD),
+ * request handlers and supplemental functions to set OFD up and clean it up.
+ *
+ * Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
+ * Author: Mike Pershin <mike.pershin@intel.com>
+ * Author: Johann Lombardi <johann.lombardi@intel.com>
+ */
+/*
+ * The OBD Filter Device (OFD) module belongs to the Object Storage
+ * Server stack and connects the RPC oriented Unified Target (TGT)
+ * layer (see lustre/include/lu_target.h) to the storage oriented OSD
+ * layer (see lustre/doc/osd-api.txt).
+ *
+ * TGT
+ * | DT and OBD APIs
+ * OFD
+ * | DT API
+ * OSD
+ *
+ * OFD implements the LU and OBD device APIs and is responsible for:
+ *
+ * - Handling client requests (create, destroy, bulk IO, setattr,
+ * get_info, set_info, statfs) for the objects belonging to the OST
+ * (together with TGT).
*
- * Author: Alex Zhuravlev <bzzz@whamcloud.com>
- * Author: Mike Pershin <tappro@whamcloud.com>
- * Author: Johann Lombardi <johann@whamcloud.com>
+ * - Providing grant space management which allows clients to reserve
+ * disk space for data writeback. OFD tracks grants on global and
+ * per client levels.
+ *
+ * - Handling object precreation requests from MDTs.
+ *
+ * - Operating the LDLM service that allows clients to maintain object
+ * data cache coherence.
*/
#define DEBUG_SUBSYSTEM S_FILTER
#include <obd_class.h>
#include <lustre_param.h>
+#include <lustre_fid.h>
+#include <lustre_lfsck.h>
+#include <lustre/lustre_idl.h>
+#include <lustre_dlm.h>
+#include <lustre_quota.h>
+#include <lustre_nodemap.h>
#include "ofd_internal.h"
/* Slab for OFD object allocation */
-static cfs_mem_cache_t *ofd_object_kmem;
+static struct kmem_cache *ofd_object_kmem;
static struct lu_kmem_descr ofd_caches[] = {
{
}
};
+/**
+ * Connect OFD to the next device in the stack.
+ *
+ * This function is used for device stack configuration and links OFD
+ * device with bottom OSD device.
+ *
+ * \param[in] env execution environment
+ * \param[in] m OFD device
+ * \param[in] next name of next device in the stack
+ * \param[out] exp export to return
+ *
+ * \retval 0 and export in \a exp if successful
+ * \retval negative value on error
+ */
+static int ofd_connect_to_next(const struct lu_env *env, struct ofd_device *m,
+ const char *next, struct obd_export **exp)
+{
+ struct obd_connect_data *data = NULL;
+ struct obd_device *obd;
+ int rc;
+ ENTRY;
+
+ OBD_ALLOC_PTR(data);
+ if (data == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ obd = class_name2obd(next);
+ if (obd == NULL) {
+ CERROR("%s: can't locate next device: %s\n",
+ ofd_name(m), next);
+ GOTO(out, rc = -ENOTCONN);
+ }
+
+ data->ocd_connect_flags = OBD_CONNECT_VERSION;
+ data->ocd_version = LUSTRE_VERSION_CODE;
+
+ rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
+ if (rc) {
+ CERROR("%s: cannot connect to next dev %s: rc = %d\n",
+ ofd_name(m), next, rc);
+ GOTO(out, rc);
+ }
+
+ m->ofd_dt_dev.dd_lu_dev.ld_site =
+ m->ofd_osd_exp->exp_obd->obd_lu_dev->ld_site;
+ LASSERT(m->ofd_dt_dev.dd_lu_dev.ld_site);
+ m->ofd_osd = lu2dt_dev(m->ofd_osd_exp->exp_obd->obd_lu_dev);
+ m->ofd_dt_dev.dd_lu_dev.ld_site->ls_top_dev = &m->ofd_dt_dev.dd_lu_dev;
+
+out:
+ if (data)
+ OBD_FREE_PTR(data);
+ RETURN(rc);
+}
+
+/**
+ * Initialize stack of devices.
+ *
+ * This function initializes OFD-OSD device stack to serve OST requests
+ *
+ * \param[in] env execution environment
+ * \param[in] m OFD device
+ * \param[in] cfg Lustre config for this server
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
static int ofd_stack_init(const struct lu_env *env,
struct ofd_device *m, struct lustre_cfg *cfg)
{
- struct lu_device *ofd_lu = &m->ofd_dt_dev.dd_lu_dev;
const char *dev = lustre_cfg_string(cfg, 0);
- struct obd_type *type;
- struct lu_device_type *ldt;
struct lu_device *d;
struct ofd_thread_info *info = ofd_info(env);
+ struct lustre_mount_info *lmi;
int rc;
+ char *osdname;
ENTRY;
- /* XXX: we should be able to use different OSDs here */
- type = class_get_type(LUSTRE_OSD_NAME);
- if (!type) {
- CERROR("Unknown type: '%s'\n", LUSTRE_OSD_NAME);
+ lmi = server_get_mount(dev);
+ if (lmi == NULL) {
+ CERROR("Cannot get mount info for %s!\n", dev);
RETURN(-ENODEV);
}
- rc = lu_env_refill((struct lu_env *)env);
- if (rc != 0) {
- CERROR("Failure to refill session: '%d'\n", rc);
- GOTO(out_type, rc);
- }
-
- ldt = type->typ_lu;
- if (ldt == NULL) {
- CERROR("type: '%s'\n", LUSTRE_OSD_NAME);
- GOTO(out_type, rc = -EINVAL);
- }
+ /* find bottom osd */
+ OBD_ALLOC(osdname, MTI_NAME_MAXLEN);
+ if (osdname == NULL)
+ RETURN(-ENOMEM);
- ldt->ldt_obd_type = type;
- d = ldt->ldt_ops->ldto_device_alloc(env, ldt, cfg);
- if (IS_ERR(d)) {
- CERROR("Cannot allocate device: '%s'\n", LUSTRE_OSD_NAME);
- GOTO(out_type, rc = -ENODEV);
- }
+ snprintf(osdname, MTI_NAME_MAXLEN, "%s-osd", dev);
+ rc = ofd_connect_to_next(env, m, osdname, &m->ofd_osd_exp);
+ OBD_FREE(osdname, MTI_NAME_MAXLEN);
+ if (rc)
+ RETURN(rc);
- LASSERT(ofd_lu->ld_site);
- d->ld_site = ofd_lu->ld_site;
+ d = m->ofd_osd_exp->exp_obd->obd_lu_dev;
+ LASSERT(d);
+ m->ofd_osd = lu2dt_dev(d);
snprintf(info->fti_u.name, sizeof(info->fti_u.name),
"%s-osd", lustre_cfg_string(cfg, 0));
- type->typ_refcnt++;
- rc = ldt->ldt_ops->ldto_device_init(env, d, dev, NULL);
- if (rc) {
- CERROR("can't init device '%s', rc %d\n", LUSTRE_OSD_NAME, rc);
- GOTO(out_free, rc);
- }
- lu_device_get(d);
- lu_ref_add(&d->ld_reference, "lu-stack", &lu_site_init);
-
- m->ofd_osd = lu2dt_dev(d);
-
- /* process setup config */
- rc = d->ld_ops->ldo_process_config(env, d, cfg);
- if (rc)
- GOTO(out_fini, rc);
-
- RETURN(rc);
-
-out_fini:
- ldt->ldt_ops->ldto_device_fini(env, d);
-out_free:
- type->typ_refcnt--;
- ldt->ldt_ops->ldto_device_free(env, d);
-out_type:
- class_put_type(type);
RETURN(rc);
}
+/**
+ * Finalize the device stack OFD-OSD.
+ *
+ * This function cleans OFD-OSD device stack and
+ * disconnects OFD from the OSD.
+ *
+ * \param[in] env execution environment
+ * \param[in] m OFD device
+ * \param[in] top top device of stack
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
static void ofd_stack_fini(const struct lu_env *env, struct ofd_device *m,
struct lu_device *top)
{
ENTRY;
lu_site_purge(env, top->ld_site, ~0);
-
/* process cleanup, pass mdt obd name to get obd umount flags */
lustre_cfg_bufs_reset(&bufs, obd->obd_name);
if (obd->obd_force)
top->ld_ops->ldo_process_config(env, top, lcfg);
lustre_cfg_free(lcfg);
- lu_stack_fini(env, &m->ofd_osd->dd_lu_dev);
- m->ofd_osd = NULL;
+ lu_site_purge(env, top->ld_site, ~0);
+ if (!cfs_hash_is_empty(top->ld_site->ls_obj_hash)) {
+ LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_ERROR, NULL);
+ lu_site_print(env, top->ld_site, &msgdata, lu_cdebug_printer);
+ }
+
+ LASSERT(m->ofd_osd_exp);
+ obd_disconnect(m->ofd_osd_exp);
EXIT;
}
-/* used by MGS to process specific configurations */
+/* For interoperability, see mdt_interop_param[]. */
+static struct cfg_interop_param ofd_interop_param[] = {
+ { "ost.quota_type", NULL },
+ { NULL }
+};
+
+/**
+ * Check if parameters are symlinks to the OSD.
+ *
+ * Some parameters were moved from ofd to osd and only their
+ * symlinks were kept in ofd by LU-3106. They are:
+ * -writehthrough_cache_enable
+ * -readcache_max_filesize
+ * -read_cache_enable
+ * -brw_stats
+ *
+ * Since they are not included by the static lprocfs var list, a pre-check
+ * is added for them to avoid "unknown param" errors. If they are matched
+ * in this check, they will be passed to the OSD directly.
+ *
+ * \param[in] param parameters to check
+ *
+ * \retval true if param is symlink to OSD param
+ * false otherwise
+ */
+static bool match_symlink_param(char *param)
+{
+ char *sval;
+ int paramlen;
+
+ if (class_match_param(param, PARAM_OST, ¶m) == 0) {
+ sval = strchr(param, '=');
+ if (sval != NULL) {
+ paramlen = sval - param;
+ if (strncmp(param, "writethrough_cache_enable",
+ paramlen) == 0 ||
+ strncmp(param, "readcache_max_filesize",
+ paramlen) == 0 ||
+ strncmp(param, "read_cache_enable",
+ paramlen) == 0 ||
+ strncmp(param, "brw_stats", paramlen) == 0)
+ return true;
+ }
+ }
+
+ return false;
+}
+
+/**
+ * Process various configuration parameters.
+ *
+ * This function is used by MGS to process specific configurations and
+ * pass them through to the next device in server stack, i.e. the OSD.
+ *
+ * \param[in] env execution environment
+ * \param[in] d LU device of OFD
+ * \param[in] cfg parameters to process
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
static int ofd_process_config(const struct lu_env *env, struct lu_device *d,
struct lustre_cfg *cfg)
{
switch (cfg->lcfg_command) {
case LCFG_PARAM: {
- struct lprocfs_static_vars lvars;
+ struct obd_device *obd = ofd_obd(m);
+ /* For interoperability */
+ struct cfg_interop_param *ptr = NULL;
+ struct lustre_cfg *old_cfg = NULL;
+ char *param = NULL;
+
+ param = lustre_cfg_string(cfg, 1);
+ if (param == NULL) {
+ CERROR("param is empty\n");
+ rc = -EINVAL;
+ break;
+ }
+
+ ptr = class_find_old_param(param, ofd_interop_param);
+ if (ptr != NULL) {
+ if (ptr->new_param == NULL) {
+ rc = 0;
+ CWARN("For interoperability, skip this %s."
+ " It is obsolete.\n", ptr->old_param);
+ break;
+ }
+
+ CWARN("Found old param %s, changed it to %s.\n",
+ ptr->old_param, ptr->new_param);
+
+ old_cfg = cfg;
+ cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
+ if (IS_ERR(cfg)) {
+ rc = PTR_ERR(cfg);
+ break;
+ }
+ }
+
+ if (match_symlink_param(param)) {
+ rc = next->ld_ops->ldo_process_config(env, next, cfg);
+ break;
+ }
- lprocfs_ofd_init_vars(&lvars);
- rc = class_process_proc_param(PARAM_OST, lvars.obd_vars, cfg,
+ rc = class_process_proc_param(PARAM_OST, obd->obd_vars, cfg,
d->ld_obd);
- if (rc > 0 || rc == -ENOSYS)
+ if (rc > 0 || rc == -ENOSYS) {
+ CDEBUG(D_CONFIG, "pass param %s down the stack.\n",
+ param);
/* we don't understand; pass it on */
rc = next->ld_ops->ldo_process_config(env, next, cfg);
+ }
break;
}
case LCFG_SPTLRPC_CONF: {
RETURN(rc);
}
+/**
+ * Implementation of lu_object_operations::loo_object_init for OFD
+ *
+ * Allocate just the next object (OSD) in stack.
+ *
+ * \param[in] env execution environment
+ * \param[in] o lu_object of OFD object
+ * \param[in] conf additional configuration parameters, not used here
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
static int ofd_object_init(const struct lu_env *env, struct lu_object *o,
const struct lu_object_conf *conf)
{
RETURN(rc);
}
+/**
+ * Implementation of lu_object_operations::loo_object_free.
+ *
+ * Finish OFD object lifecycle and free its memory.
+ *
+ * \param[in] env execution environment
+ * \param[in] o LU object of OFD object
+ */
static void ofd_object_free(const struct lu_env *env, struct lu_object *o)
{
struct ofd_object *of = ofd_obj(o);
EXIT;
}
+/**
+ * Implementation of lu_object_operations::loo_object_print.
+ *
+ * Print OFD part of compound OFD-OSD object. See lu_object_print() and
+ * LU_OBJECT_DEBUG() for more details about the compound object printing.
+ *
+ * \param[in] env execution environment
+ * \param[in] cookie opaque data passed to the printer function
+ * \param[in] p printer function to use
+ * \param[in] o LU object of OFD object
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
static int ofd_object_print(const struct lu_env *env, void *cookie,
lu_printer_t p, const struct lu_object *o)
{
return (*p)(env, cookie, LUSTRE_OST_NAME"-object@%p", o);
}
-struct lu_object_operations ofd_obj_ops = {
+static struct lu_object_operations ofd_obj_ops = {
.loo_object_init = ofd_object_init,
.loo_object_free = ofd_object_free,
.loo_object_print = ofd_object_print
};
+/**
+ * Implementation of lu_device_operations::lod_object_alloc.
+ *
+ * This function allocates OFD part of compound OFD-OSD object and
+ * initializes its header, because OFD is the top device in stack
+ *
+ * \param[in] env execution environment
+ * \param[in] hdr object header, NULL for OFD
+ * \param[in] d lu_device
+ *
+ * \retval allocated object if successful
+ * \retval NULL value on failed allocation
+ */
static struct lu_object *ofd_object_alloc(const struct lu_env *env,
const struct lu_object_header *hdr,
struct lu_device *d)
ENTRY;
- OBD_SLAB_ALLOC_PTR_GFP(of, ofd_object_kmem, CFS_ALLOC_IO);
+ OBD_SLAB_ALLOC_PTR_GFP(of, ofd_object_kmem, GFP_NOFS);
if (of != NULL) {
struct lu_object *o;
struct lu_object_header *h;
}
}
-extern int ost_handle(struct ptlrpc_request *req);
+/**
+ * Return the result of LFSCK run to the OFD.
+ *
+ * Notify OFD about result of LFSCK run. That may block the new object
+ * creation until problem is fixed by LFSCK.
+ *
+ * \param[in] env execution environment
+ * \param[in] data pointer to the OFD device
+ * \param[in] event LFSCK event type
+ *
+ * \retval 0 if successful
+ * \retval negative value on unknown event
+ */
+static int ofd_lfsck_out_notify(const struct lu_env *env, void *data,
+ enum lfsck_events event)
+{
+ struct ofd_device *ofd = data;
+ struct obd_device *obd = ofd_obd(ofd);
+
+ switch (event) {
+ case LE_LASTID_REBUILDING:
+ CWARN("%s: Found crashed LAST_ID, deny creating new OST-object "
+ "on the device until the LAST_ID rebuilt successfully.\n",
+ obd->obd_name);
+ down_write(&ofd->ofd_lastid_rwsem);
+ ofd->ofd_lastid_rebuilding = 1;
+ up_write(&ofd->ofd_lastid_rwsem);
+ break;
+ case LE_LASTID_REBUILT: {
+ down_write(&ofd->ofd_lastid_rwsem);
+ ofd_seqs_free(env, ofd);
+ ofd->ofd_lastid_rebuilding = 0;
+ ofd->ofd_lastid_gen++;
+ up_write(&ofd->ofd_lastid_rwsem);
+ CWARN("%s: Rebuilt crashed LAST_ID files successfully.\n",
+ obd->obd_name);
+ break;
+ }
+ default:
+ CERROR("%s: unknown lfsck event: rc = %d\n",
+ ofd_name(ofd), event);
+ return -EINVAL;
+ }
+
+ return 0;
+}
-static int ofd_start(const struct lu_env *env, struct lu_device *dev)
+/**
+ * Implementation of lu_device_operations::ldo_prepare.
+ *
+ * This method is called after layer has been initialized and before it starts
+ * serving user requests. In OFD it starts lfsk check routines and initializes
+ * recovery.
+ *
+ * \param[in] env execution environment
+ * \param[in] pdev higher device in stack, NULL for OFD
+ * \param[in] dev lu_device of OFD device
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_prepare(const struct lu_env *env, struct lu_device *pdev,
+ struct lu_device *dev)
{
- struct ofd_device *ofd = ofd_dev(dev);
- struct lu_device *next = &ofd->ofd_osd->dd_lu_dev;
- int rc;
+ struct ofd_thread_info *info;
+ struct ofd_device *ofd = ofd_dev(dev);
+ struct obd_device *obd = ofd_obd(ofd);
+ struct lu_device *next = &ofd->ofd_osd->dd_lu_dev;
+ int rc;
ENTRY;
+ info = ofd_info_init(env, NULL);
+ if (info == NULL)
+ RETURN(-EFAULT);
+
/* initialize lower device */
rc = next->ld_ops->ldo_prepare(env, dev, next);
+ if (rc != 0)
+ RETURN(rc);
+
+ rc = lfsck_register(env, ofd->ofd_osd, ofd->ofd_osd, obd,
+ ofd_lfsck_out_notify, ofd, false);
+ if (rc != 0) {
+ CERROR("%s: failed to initialize lfsck: rc = %d\n",
+ obd->obd_name, rc);
+ RETURN(rc);
+ }
+
+ rc = lfsck_register_namespace(env, ofd->ofd_osd, ofd->ofd_namespace);
+ /* The LFSCK instance is registered just now, so it must be there when
+ * register the namespace to such instance. */
+ LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
+
+ target_recovery_init(&ofd->ofd_lut, tgt_request_handle);
+ LASSERT(obd->obd_no_conn);
+ spin_lock(&obd->obd_dev_lock);
+ obd->obd_no_conn = 0;
+ spin_unlock(&obd->obd_dev_lock);
+
+ if (obd->obd_recovering == 0)
+ ofd_postrecov(env, ofd);
RETURN(rc);
}
+/**
+ * Implementation of lu_device_operations::ldo_recovery_complete.
+ *
+ * This method notifies all layers about 'recovery complete' event. That means
+ * device is in full state and consistent. An OFD calculates available grant
+ * space upon this event.
+ *
+ * \param[in] env execution environment
+ * \param[in] dev lu_device of OFD device
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
static int ofd_recovery_complete(const struct lu_env *env,
struct lu_device *dev)
{
struct ofd_device *ofd = ofd_dev(dev);
struct lu_device *next = &ofd->ofd_osd->dd_lu_dev;
- int rc = 0;
+ int rc = 0, max_precreate;
ENTRY;
+ /*
+ * Grant space for object precreation on the self export.
+ * This initial reserved space (i.e. 10MB for zfs and 280KB for ldiskfs)
+ * is enough to create 10k objects. More space is then acquired for
+ * precreation in ofd_grant_create().
+ */
+ max_precreate = OST_MAX_PRECREATE * ofd->ofd_dt_conf.ddp_inodespace / 2;
+ ofd_grant_connect(env, dev->ld_obd->obd_self_export, max_precreate,
+ false);
rc = next->ld_ops->ldo_recovery_complete(env, next);
RETURN(rc);
}
+/**
+ * lu_device_operations matrix for OFD device.
+ */
static struct lu_device_operations ofd_lu_ops = {
.ldo_object_alloc = ofd_object_alloc,
.ldo_process_config = ofd_process_config,
.ldo_recovery_complete = ofd_recovery_complete,
+ .ldo_prepare = ofd_prepare,
};
-extern int ost_handle(struct ptlrpc_request *req);
+LPROC_SEQ_FOPS(lprocfs_nid_stats_clear);
-static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
- struct lu_device_type *ldt, struct lustre_cfg *cfg)
+/**
+ * Initialize all needed procfs entries for OFD device.
+ *
+ * \param[in] ofd OFD device
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_procfs_init(struct ofd_device *ofd)
{
- const char *dev = lustre_cfg_string(cfg, 0);
- struct ofd_thread_info *info = NULL;
- struct obd_device *obd;
- int rc;
+ struct obd_device *obd = ofd_obd(ofd);
+ struct proc_dir_entry *entry;
+ int rc = 0;
ENTRY;
- obd = class_name2obd(dev);
- if (obd == NULL) {
- CERROR("Cannot find obd with name %s\n", dev);
- RETURN(-ENODEV);
- }
-
- rc = lu_env_refill((struct lu_env *)env);
- if (rc != 0)
+ /* lprocfs must be setup before the ofd so state can be safely added
+ * to /proc incrementally as the ofd is setup */
+ obd->obd_vars = lprocfs_ofd_obd_vars;
+ rc = lprocfs_obd_setup(obd);
+ if (rc) {
+ CERROR("%s: lprocfs_obd_setup failed: %d.\n",
+ obd->obd_name, rc);
RETURN(rc);
-
- obd->u.obt.obt_magic = OBT_MAGIC;
-
- m->ofd_dt_dev.dd_lu_dev.ld_ops = &ofd_lu_ops;
- m->ofd_dt_dev.dd_lu_dev.ld_obd = obd;
- /* set this lu_device to obd, because error handling need it */
- obd->obd_lu_dev = &m->ofd_dt_dev.dd_lu_dev;
-
- /* No connection accepted until configurations will finish */
- obd->obd_no_conn = 1;
- obd->obd_replayable = 1;
- if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
- char *str = lustre_cfg_string(cfg, 4);
-
- if (strchr(str, 'n')) {
- CWARN("%s: recovery disabled\n", obd->obd_name);
- obd->obd_replayable = 0;
- }
}
- info = ofd_info_init(env, NULL);
- if (info == NULL)
- RETURN(-EFAULT);
-
- rc = lu_site_init(&m->ofd_site, &m->ofd_dt_dev.dd_lu_dev);
- if (rc)
- GOTO(err_out, rc);
- m->ofd_site.ls_top_dev = &m->ofd_dt_dev.dd_lu_dev;
-
- rc = ofd_stack_init(env, m, cfg);
+ rc = lprocfs_alloc_obd_stats(obd, LPROC_OFD_STATS_LAST);
if (rc) {
- CERROR("Can't init device stack, rc %d\n", rc);
- GOTO(err_lu_site, rc);
+ CERROR("%s: lprocfs_alloc_obd_stats failed: %d.\n",
+ obd->obd_name, rc);
+ GOTO(obd_cleanup, rc);
}
- dt_conf_get(env, m->ofd_osd, &m->ofd_dt_conf);
-
- rc = ofd_start(env, &m->ofd_dt_dev.dd_lu_dev);
- if (rc)
- GOTO(err_fini_stack, rc);
+ obd->obd_uses_nid_stats = 1;
- rc = lut_init(env, &m->ofd_lut, obd, m->ofd_osd);
- if (rc)
- GOTO(err_fini_stack, rc);
+ entry = lprocfs_seq_register("exports", obd->obd_proc_entry, NULL,
+ NULL);
+ if (IS_ERR(entry)) {
+ rc = PTR_ERR(entry);
+ CERROR("%s: error %d setting up lprocfs for %s\n",
+ obd->obd_name, rc, "exports");
+ GOTO(obd_cleanup, rc);
+ }
+ obd->obd_proc_exports_entry = entry;
+
+ entry = lprocfs_add_simple(obd->obd_proc_exports_entry, "clear",
+ obd, &lprocfs_nid_stats_clear_fops);
+ if (IS_ERR(entry)) {
+ rc = PTR_ERR(entry);
+ CERROR("%s: add proc entry 'clear' failed: %d.\n",
+ obd->obd_name, rc);
+ GOTO(obd_cleanup, rc);
+ }
- target_recovery_init(&m->ofd_lut, ost_handle);
+ ofd_stats_counter_init(obd->obd_stats);
- rc = lu_site_init_finish(&m->ofd_site);
+ rc = lprocfs_job_stats_init(obd, LPROC_OFD_STATS_LAST,
+ ofd_stats_counter_init);
if (rc)
- GOTO(err_fini_lut, rc);
-
+ GOTO(obd_cleanup, rc);
RETURN(0);
-err_fini_lut:
- lut_fini(env, &m->ofd_lut);
-err_fini_stack:
- ofd_stack_fini(env, m, &m->ofd_osd->dd_lu_dev);
-err_lu_site:
- lu_site_fini(&m->ofd_site);
-err_out:
+obd_cleanup:
+ lprocfs_obd_cleanup(obd);
+ lprocfs_free_obd_stats(obd);
+
return rc;
}
-static void ofd_fini(const struct lu_env *env, struct ofd_device *m)
+/**
+ * Expose OSD statistics to OFD layer.
+ *
+ * The osd interfaces to the backend file system exposes useful data
+ * such as brw_stats and read or write cache states. This same data
+ * needs to be exposed into the obdfilter (ofd) layer to maintain
+ * backwards compatibility. This function creates the symlinks in the
+ * proc layer to enable this.
+ *
+ * \param[in] ofd OFD device
+ */
+static void ofd_procfs_add_brw_stats_symlink(struct ofd_device *ofd)
{
- struct obd_device *obd = ofd_obd(m);
- struct lu_device *d = &m->ofd_dt_dev.dd_lu_dev;
+ struct obd_device *obd = ofd_obd(ofd);
+ struct obd_device *osd_obd = ofd->ofd_osd_exp->exp_obd;
- target_recovery_fini(obd);
- obd_exports_barrier(obd);
- obd_zombie_barrier();
+ if (obd->obd_proc_entry == NULL)
+ return;
- lut_fini(env, &m->ofd_lut);
+ lprocfs_add_symlink("brw_stats", obd->obd_proc_entry,
+ "../../%s/%s/brw_stats",
+ osd_obd->obd_type->typ_name, obd->obd_name);
- ofd_stack_fini(env, m, m->ofd_site.ls_top_dev);
- lu_site_fini(&m->ofd_site);
- LASSERT(cfs_atomic_read(&d->ld_ref) == 0);
- EXIT;
-}
+ lprocfs_add_symlink("read_cache_enable", obd->obd_proc_entry,
+ "../../%s/%s/read_cache_enable",
+ osd_obd->obd_type->typ_name, obd->obd_name);
-static struct lu_device *ofd_device_fini(const struct lu_env *env,
- struct lu_device *d)
-{
- ENTRY;
- ofd_fini(env, ofd_dev(d));
- RETURN(NULL);
+ lprocfs_add_symlink("readcache_max_filesize",
+ obd->obd_proc_entry,
+ "../../%s/%s/readcache_max_filesize",
+ osd_obd->obd_type->typ_name, obd->obd_name);
+
+ lprocfs_add_symlink("writethrough_cache_enable",
+ obd->obd_proc_entry,
+ "../../%s/%s/writethrough_cache_enable",
+ osd_obd->obd_type->typ_name, obd->obd_name);
}
-static struct lu_device *ofd_device_free(const struct lu_env *env,
- struct lu_device *d)
+/**
+ * Cleanup all procfs entries in OFD.
+ *
+ * \param[in] ofd OFD device
+ */
+static void ofd_procfs_fini(struct ofd_device *ofd)
{
- struct ofd_device *m = ofd_dev(d);
+ struct obd_device *obd = ofd_obd(ofd);
- dt_device_fini(&m->ofd_dt_dev);
- OBD_FREE_PTR(m);
- RETURN(NULL);
+ lprocfs_free_per_client_stats(obd);
+ lprocfs_obd_cleanup(obd);
+ lprocfs_free_obd_stats(obd);
+ lprocfs_job_stats_fini(obd);
}
-static struct lu_device *ofd_device_alloc(const struct lu_env *env,
- struct lu_device_type *t,
- struct lustre_cfg *cfg)
+/**
+ * Stop SEQ/FID server on OFD.
+ *
+ * \param[in] env execution environment
+ * \param[in] ofd OFD device
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+int ofd_fid_fini(const struct lu_env *env, struct ofd_device *ofd)
{
- struct ofd_device *m;
- struct lu_device *l;
- int rc;
+ return seq_site_fini(env, &ofd->ofd_seq_site);
+}
- OBD_ALLOC_PTR(m);
- if (m == NULL)
- return ERR_PTR(-ENOMEM);
+/**
+ * Start SEQ/FID server on OFD.
+ *
+ * The SEQ/FID server on OFD is needed to allocate FIDs for new objects.
+ * It also connects to the master server to get own FID sequence (SEQ) range
+ * to this particular OFD. Typically that happens when the OST is first
+ * formatted or in the rare case that it exhausts the local sequence range.
+ *
+ * The sequence range is allocated out to the MDTs for OST object allocations,
+ * and not directly to the clients.
+ *
+ * \param[in] env execution environment
+ * \param[in] ofd OFD device
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+int ofd_fid_init(const struct lu_env *env, struct ofd_device *ofd)
+{
+ struct seq_server_site *ss = &ofd->ofd_seq_site;
+ struct lu_device *lu = &ofd->ofd_dt_dev.dd_lu_dev;
+ char *obd_name = ofd_name(ofd);
+ char *name = NULL;
+ int rc = 0;
+
+ ss = &ofd->ofd_seq_site;
+ lu->ld_site->ld_seq_site = ss;
+ ss->ss_lu = lu->ld_site;
+ ss->ss_node_id = ofd->ofd_lut.lut_lsd.lsd_osd_index;
+
+ OBD_ALLOC_PTR(ss->ss_server_seq);
+ if (ss->ss_server_seq == NULL)
+ GOTO(out_free, rc = -ENOMEM);
+
+ OBD_ALLOC(name, strlen(obd_name) + 10);
+ if (!name) {
+ OBD_FREE_PTR(ss->ss_server_seq);
+ ss->ss_server_seq = NULL;
+ GOTO(out_free, rc = -ENOMEM);
+ }
- l = &m->ofd_dt_dev.dd_lu_dev;
- dt_device_init(&m->ofd_dt_dev, t);
- rc = ofd_init0(env, m, t, cfg);
- if (rc != 0) {
- ofd_device_free(env, l);
- l = ERR_PTR(rc);
+ rc = seq_server_init(env, ss->ss_server_seq, ofd->ofd_osd, obd_name,
+ LUSTRE_SEQ_SERVER, ss);
+ if (rc) {
+ CERROR("%s : seq server init error %d\n", obd_name, rc);
+ GOTO(out_free, rc);
}
+ ss->ss_server_seq->lss_space.lsr_index = ss->ss_node_id;
- return l;
-}
+ OBD_ALLOC_PTR(ss->ss_client_seq);
+ if (ss->ss_client_seq == NULL)
+ GOTO(out_free, rc = -ENOMEM);
-/* thread context key constructor/destructor */
-LU_KEY_INIT_FINI(ofd, struct ofd_thread_info);
+ snprintf(name, strlen(obd_name) + 6, "%p-super", obd_name);
+ rc = seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_DATA,
+ name, NULL);
+ if (rc) {
+ CERROR("%s : seq client init error %d\n", obd_name, rc);
+ GOTO(out_free, rc);
+ }
+ OBD_FREE(name, strlen(obd_name) + 10);
+ name = NULL;
+ rc = seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq);
+
+out_free:
+ if (rc) {
+ if (ss->ss_server_seq) {
+ seq_server_fini(ss->ss_server_seq, env);
+ OBD_FREE_PTR(ss->ss_server_seq);
+ ss->ss_server_seq = NULL;
+ }
+
+ if (ss->ss_client_seq) {
+ seq_client_fini(ss->ss_client_seq);
+ OBD_FREE_PTR(ss->ss_client_seq);
+ ss->ss_client_seq = NULL;
+ }
+
+ if (name) {
+ OBD_FREE(name, strlen(obd_name) + 10);
+ name = NULL;
+ }
+ }
+
+ return rc;
+}
+
+/**
+ * OFD request handler for OST_SET_INFO RPC.
+ *
+ * This is OFD-specific part of request handling
+ *
+ * \param[in] tsi target session environment for this request
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_set_info_hdl(struct tgt_session_info *tsi)
+{
+ struct ptlrpc_request *req = tgt_ses_req(tsi);
+ struct ost_body *body = NULL, *repbody;
+ void *key, *val = NULL;
+ int keylen, vallen, rc = 0;
+ bool is_grant_shrink;
+ struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
+
+ ENTRY;
+
+ key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
+ if (key == NULL) {
+ DEBUG_REQ(D_HA, req, "no set_info key");
+ RETURN(err_serious(-EFAULT));
+ }
+ keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
+ RCL_CLIENT);
+
+ val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
+ if (val == NULL) {
+ DEBUG_REQ(D_HA, req, "no set_info val");
+ RETURN(err_serious(-EFAULT));
+ }
+ vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
+ RCL_CLIENT);
+
+ is_grant_shrink = KEY_IS(KEY_GRANT_SHRINK);
+ if (is_grant_shrink)
+ /* In this case the value is actually an RMF_OST_BODY, so we
+ * transmutate the type of this PTLRPC */
+ req_capsule_extend(tsi->tsi_pill, &RQF_OST_SET_GRANT_INFO);
+
+ rc = req_capsule_server_pack(tsi->tsi_pill);
+ if (rc < 0)
+ RETURN(rc);
+
+ if (is_grant_shrink) {
+ body = req_capsule_client_get(tsi->tsi_pill, &RMF_OST_BODY);
+
+ repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
+ *repbody = *body;
+
+ /** handle grant shrink, similar to a read request */
+ ofd_grant_prepare_read(tsi->tsi_env, tsi->tsi_exp,
+ &repbody->oa);
+ } else if (KEY_IS(KEY_EVICT_BY_NID)) {
+ if (vallen > 0)
+ obd_export_evict_by_nid(tsi->tsi_exp->exp_obd, val);
+ rc = 0;
+ } else if (KEY_IS(KEY_CAPA_KEY)) {
+ rc = ofd_update_capa_key(ofd, val);
+ } else if (KEY_IS(KEY_SPTLRPC_CONF)) {
+ rc = tgt_adapt_sptlrpc_conf(tsi->tsi_tgt, 0);
+ } else {
+ CERROR("%s: Unsupported key %s\n",
+ tgt_name(tsi->tsi_tgt), (char *)key);
+ rc = -EOPNOTSUPP;
+ }
+ ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_SET_INFO,
+ tsi->tsi_jobid, 1);
+
+ RETURN(rc);
+}
+
+/**
+ * Get FIEMAP (FIle Extent MAPping) for object with the given FID.
+ *
+ * This function returns a list of extents which describes how a file's
+ * blocks are laid out on the disk.
+ *
+ * \param[in] env execution environment
+ * \param[in] ofd OFD device
+ * \param[in] fid FID of object
+ * \param[in] fiemap fiemap structure to fill with data
+ *
+ * \retval 0 if \a fiemap is filled with data successfully
+ * \retval negative value on error
+ */
+int ofd_fiemap_get(const struct lu_env *env, struct ofd_device *ofd,
+ struct lu_fid *fid, struct ll_user_fiemap *fiemap)
+{
+ struct ofd_object *fo;
+ int rc;
+
+ fo = ofd_object_find(env, ofd, fid);
+ if (IS_ERR(fo)) {
+ CERROR("%s: error finding object "DFID"\n",
+ ofd_name(ofd), PFID(fid));
+ return PTR_ERR(fo);
+ }
+
+ ofd_read_lock(env, fo);
+ if (ofd_object_exists(fo))
+ rc = dt_fiemap_get(env, ofd_object_child(fo), fiemap);
+ else
+ rc = -ENOENT;
+ ofd_read_unlock(env, fo);
+ ofd_object_put(env, fo);
+ return rc;
+}
+
+struct locked_region {
+ struct list_head list;
+ struct lustre_handle lh;
+};
+
+/**
+ * Lock single extent and save lock handle in the list.
+ *
+ * This is supplemental function for lock_zero_regions(). It allocates
+ * new locked_region structure and locks it with extent lock, then adds
+ * it to the list of all such regions.
+ *
+ * \param[in] ns LDLM namespace
+ * \param[in] res_id resource ID
+ * \param[in] begin start of region
+ * \param[in] end end of region
+ * \param[in] locked list head of regions list
+ *
+ * \retval 0 if successful locking
+ * \retval negative value on error
+ */
+static int lock_region(struct ldlm_namespace *ns, struct ldlm_res_id *res_id,
+ unsigned long long begin, unsigned long long end,
+ struct list_head *locked)
+{
+ struct locked_region *region = NULL;
+ __u64 flags = 0;
+ int rc;
+
+ LASSERT(begin <= end);
+ OBD_ALLOC_PTR(region);
+ if (region == NULL)
+ return -ENOMEM;
+
+ rc = tgt_extent_lock(ns, res_id, begin, end, ®ion->lh,
+ LCK_PR, &flags);
+ if (rc != 0)
+ return rc;
+
+ CDEBUG(D_OTHER, "ost lock [%llu,%llu], lh=%p\n", begin, end,
+ ®ion->lh);
+ list_add(®ion->list, locked);
+
+ return 0;
+}
+
+/**
+ * Lock the sparse areas of given resource.
+ *
+ * The locking of sparse areas will cause dirty data to be flushed back from
+ * clients. This is used when getting the FIEMAP of an object to make sure
+ * there is no unaccounted cached data on clients.
+ *
+ * This function goes through \a fiemap list of extents and locks only sparse
+ * areas between extents.
+ *
+ * \param[in] ns LDLM namespace
+ * \param[in] res_id resource ID
+ * \param[in] fiemap file extents mapping on disk
+ * \param[in] locked list head of regions list
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int lock_zero_regions(struct ldlm_namespace *ns,
+ struct ldlm_res_id *res_id,
+ struct ll_user_fiemap *fiemap,
+ struct list_head *locked)
+{
+ __u64 begin = fiemap->fm_start;
+ unsigned int i;
+ int rc = 0;
+ struct ll_fiemap_extent *fiemap_start = fiemap->fm_extents;
+
+ ENTRY;
+
+ CDEBUG(D_OTHER, "extents count %u\n", fiemap->fm_mapped_extents);
+ for (i = 0; i < fiemap->fm_mapped_extents; i++) {
+ if (fiemap_start[i].fe_logical > begin) {
+ CDEBUG(D_OTHER, "ost lock [%llu,%llu]\n",
+ begin, fiemap_start[i].fe_logical);
+ rc = lock_region(ns, res_id, begin,
+ fiemap_start[i].fe_logical, locked);
+ if (rc)
+ RETURN(rc);
+ }
+
+ begin = fiemap_start[i].fe_logical + fiemap_start[i].fe_length;
+ }
+
+ if (begin < (fiemap->fm_start + fiemap->fm_length)) {
+ CDEBUG(D_OTHER, "ost lock [%llu,%llu]\n",
+ begin, fiemap->fm_start + fiemap->fm_length);
+ rc = lock_region(ns, res_id, begin,
+ fiemap->fm_start + fiemap->fm_length, locked);
+ }
+
+ RETURN(rc);
+}
+
+/**
+ * Unlock all previously locked sparse areas for given resource.
+ *
+ * This function goes through list of locked regions, unlocking and freeing
+ * them one-by-one.
+ *
+ * \param[in] ns LDLM namespace
+ * \param[in] locked list head of regions list
+ */
+static void
+unlock_zero_regions(struct ldlm_namespace *ns, struct list_head *locked)
+{
+ struct locked_region *entry, *temp;
+
+ list_for_each_entry_safe(entry, temp, locked, list) {
+ CDEBUG(D_OTHER, "ost unlock lh=%p\n", &entry->lh);
+ tgt_extent_unlock(&entry->lh, LCK_PR);
+ list_del(&entry->list);
+ OBD_FREE_PTR(entry);
+ }
+}
+
+/**
+ * OFD request handler for OST_GET_INFO RPC.
+ *
+ * This is OFD-specific part of request handling. The OFD-specific keys are:
+ * - KEY_LAST_ID (obsolete)
+ * - KEY_FIEMAP
+ * - KEY_LAST_FID
+ *
+ * This function reads needed data from storage and fills reply with it.
+ *
+ * Note: the KEY_LAST_ID is obsolete, replaced by KEY_LAST_FID on newer MDTs,
+ * and is kept for compatibility.
+ *
+ * \param[in] tsi target session environment for this request
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_get_info_hdl(struct tgt_session_info *tsi)
+{
+ struct obd_export *exp = tsi->tsi_exp;
+ struct ofd_device *ofd = ofd_exp(exp);
+ struct ofd_thread_info *fti = tsi2ofd_info(tsi);
+ void *key;
+ int keylen;
+ int replylen, rc = 0;
+
+ ENTRY;
+
+ /* this common part for get_info rpc */
+ key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
+ if (key == NULL) {
+ DEBUG_REQ(D_HA, tgt_ses_req(tsi), "no get_info key");
+ RETURN(err_serious(-EPROTO));
+ }
+ keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
+ RCL_CLIENT);
+
+ if (KEY_IS(KEY_LAST_ID)) {
+ obd_id *last_id;
+ struct ofd_seq *oseq;
+
+ req_capsule_extend(tsi->tsi_pill, &RQF_OST_GET_INFO_LAST_ID);
+ rc = req_capsule_server_pack(tsi->tsi_pill);
+ if (rc)
+ RETURN(err_serious(rc));
+
+ last_id = req_capsule_server_get(tsi->tsi_pill, &RMF_OBD_ID);
+
+ oseq = ofd_seq_load(tsi->tsi_env, ofd,
+ (obd_seq)exp->exp_filter_data.fed_group);
+ if (IS_ERR(oseq))
+ rc = -EFAULT;
+ else
+ *last_id = ofd_seq_last_oid(oseq);
+ ofd_seq_put(tsi->tsi_env, oseq);
+ } else if (KEY_IS(KEY_FIEMAP)) {
+ struct ll_fiemap_info_key *fm_key;
+ struct ll_user_fiemap *fiemap;
+ struct lu_fid *fid;
+
+ req_capsule_extend(tsi->tsi_pill, &RQF_OST_GET_INFO_FIEMAP);
+
+ fm_key = req_capsule_client_get(tsi->tsi_pill, &RMF_FIEMAP_KEY);
+ rc = tgt_validate_obdo(tsi, &fm_key->oa);
+ if (rc)
+ RETURN(err_serious(rc));
+
+ fid = &fm_key->oa.o_oi.oi_fid;
+
+ CDEBUG(D_INODE, "get FIEMAP of object "DFID"\n", PFID(fid));
+
+ replylen = fiemap_count_to_size(fm_key->fiemap.fm_extent_count);
+ req_capsule_set_size(tsi->tsi_pill, &RMF_FIEMAP_VAL,
+ RCL_SERVER, replylen);
+
+ rc = req_capsule_server_pack(tsi->tsi_pill);
+ if (rc)
+ RETURN(err_serious(rc));
+
+ fiemap = req_capsule_server_get(tsi->tsi_pill, &RMF_FIEMAP_VAL);
+ if (fiemap == NULL)
+ RETURN(-ENOMEM);
+
+ *fiemap = fm_key->fiemap;
+ rc = ofd_fiemap_get(tsi->tsi_env, ofd, fid, fiemap);
+
+ /* LU-3219: Lock the sparse areas to make sure dirty
+ * flushed back from client, then call fiemap again. */
+ if (fm_key->oa.o_valid & OBD_MD_FLFLAGS &&
+ fm_key->oa.o_flags & OBD_FL_SRVLOCK) {
+ struct list_head locked;
+
+ INIT_LIST_HEAD(&locked);
+ ost_fid_build_resid(fid, &fti->fti_resid);
+ rc = lock_zero_regions(ofd->ofd_namespace,
+ &fti->fti_resid, fiemap,
+ &locked);
+ if (rc == 0 && !list_empty(&locked)) {
+ rc = ofd_fiemap_get(tsi->tsi_env, ofd, fid,
+ fiemap);
+ unlock_zero_regions(ofd->ofd_namespace,
+ &locked);
+ }
+ }
+ } else if (KEY_IS(KEY_LAST_FID)) {
+ struct ofd_device *ofd = ofd_exp(exp);
+ struct ofd_seq *oseq;
+ struct lu_fid *fid;
+ int rc;
+
+ req_capsule_extend(tsi->tsi_pill, &RQF_OST_GET_INFO_LAST_FID);
+ rc = req_capsule_server_pack(tsi->tsi_pill);
+ if (rc)
+ RETURN(err_serious(rc));
+
+ fid = req_capsule_client_get(tsi->tsi_pill, &RMF_FID);
+ if (fid == NULL)
+ RETURN(err_serious(-EPROTO));
+
+ fid_le_to_cpu(&fti->fti_ostid.oi_fid, fid);
+
+ fid = req_capsule_server_get(tsi->tsi_pill, &RMF_FID);
+ if (fid == NULL)
+ RETURN(-ENOMEM);
+
+ oseq = ofd_seq_load(tsi->tsi_env, ofd,
+ ostid_seq(&fti->fti_ostid));
+ if (IS_ERR(oseq))
+ RETURN(PTR_ERR(oseq));
+
+ rc = ostid_to_fid(fid, &oseq->os_oi,
+ ofd->ofd_lut.lut_lsd.lsd_osd_index);
+ if (rc != 0)
+ GOTO(out_put, rc);
+
+ CDEBUG(D_HA, "%s: LAST FID is "DFID"\n", ofd_name(ofd),
+ PFID(fid));
+out_put:
+ ofd_seq_put(tsi->tsi_env, oseq);
+ } else {
+ CERROR("%s: not supported key %s\n", tgt_name(tsi->tsi_tgt),
+ (char *)key);
+ rc = -EOPNOTSUPP;
+ }
+ ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_GET_INFO,
+ tsi->tsi_jobid, 1);
+
+ RETURN(rc);
+}
+
+/**
+ * OFD request handler for OST_GETATTR RPC.
+ *
+ * This is OFD-specific part of request handling. It finds the OFD object
+ * by its FID, gets attributes from storage and packs result to the reply.
+ *
+ * \param[in] tsi target session environment for this request
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_getattr_hdl(struct tgt_session_info *tsi)
+{
+ struct ofd_thread_info *fti = tsi2ofd_info(tsi);
+ struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
+ struct ost_body *repbody;
+ struct lustre_handle lh = { 0 };
+ struct ofd_object *fo;
+ __u64 flags = 0;
+ ldlm_mode_t lock_mode = LCK_PR;
+ bool srvlock;
+ int rc;
+ ENTRY;
+
+ LASSERT(tsi->tsi_ost_body != NULL);
+
+ repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
+ if (repbody == NULL)
+ RETURN(-ENOMEM);
+
+ repbody->oa.o_oi = tsi->tsi_ost_body->oa.o_oi;
+ repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
+
+ srvlock = tsi->tsi_ost_body->oa.o_valid & OBD_MD_FLFLAGS &&
+ tsi->tsi_ost_body->oa.o_flags & OBD_FL_SRVLOCK;
+
+ if (srvlock) {
+ if (unlikely(tsi->tsi_ost_body->oa.o_flags & OBD_FL_FLUSH))
+ lock_mode = LCK_PW;
+
+ rc = tgt_extent_lock(tsi->tsi_tgt->lut_obd->obd_namespace,
+ &tsi->tsi_resid, 0, OBD_OBJECT_EOF, &lh,
+ lock_mode, &flags);
+ if (rc != 0)
+ RETURN(rc);
+ }
+
+ fo = ofd_object_find_exists(tsi->tsi_env, ofd, &tsi->tsi_fid);
+ if (IS_ERR(fo))
+ GOTO(out, rc = PTR_ERR(fo));
+
+ rc = ofd_attr_get(tsi->tsi_env, fo, &fti->fti_attr);
+ if (rc == 0) {
+ __u64 curr_version;
+
+ obdo_from_la(&repbody->oa, &fti->fti_attr,
+ OFD_VALID_FLAGS | LA_UID | LA_GID);
+ tgt_drop_id(tsi->tsi_exp, &repbody->oa);
+
+ /* Store object version in reply */
+ curr_version = dt_version_get(tsi->tsi_env,
+ ofd_object_child(fo));
+ if ((__s64)curr_version != -EOPNOTSUPP) {
+ repbody->oa.o_valid |= OBD_MD_FLDATAVERSION;
+ repbody->oa.o_data_version = curr_version;
+ }
+ }
+
+ ofd_object_put(tsi->tsi_env, fo);
+out:
+ if (srvlock)
+ tgt_extent_unlock(&lh, lock_mode);
+
+ ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_GETATTR,
+ tsi->tsi_jobid, 1);
+
+ repbody->oa.o_valid |= OBD_MD_FLFLAGS;
+ repbody->oa.o_flags = OBD_FL_FLUSH;
+
+ RETURN(rc);
+}
+
+/**
+ * OFD request handler for OST_SETATTR RPC.
+ *
+ * This is OFD-specific part of request handling. It finds the OFD object
+ * by its FID, sets attributes from request and packs result to the reply.
+ *
+ * \param[in] tsi target session environment for this request
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_setattr_hdl(struct tgt_session_info *tsi)
+{
+ struct ofd_thread_info *fti = tsi2ofd_info(tsi);
+ struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
+ struct ost_body *body = tsi->tsi_ost_body;
+ struct ost_body *repbody;
+ struct ldlm_resource *res;
+ struct ofd_object *fo;
+ struct filter_fid *ff = NULL;
+ int rc = 0;
+
+ ENTRY;
+
+ LASSERT(body != NULL);
+
+ repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
+ if (repbody == NULL)
+ RETURN(-ENOMEM);
+
+ repbody->oa.o_oi = body->oa.o_oi;
+ repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
+
+ /* This would be very bad - accidentally truncating a file when
+ * changing the time or similar - bug 12203. */
+ if (body->oa.o_valid & OBD_MD_FLSIZE &&
+ body->oa.o_size != OBD_OBJECT_EOF) {
+ static char mdsinum[48];
+
+ if (body->oa.o_valid & OBD_MD_FLFID)
+ snprintf(mdsinum, sizeof(mdsinum) - 1,
+ "of parent "DFID, body->oa.o_parent_seq,
+ body->oa.o_parent_oid, 0);
+ else
+ mdsinum[0] = '\0';
+
+ CERROR("%s: setattr from %s is trying to truncate object "DFID
+ " %s\n", ofd_name(ofd), obd_export_nid2str(tsi->tsi_exp),
+ PFID(&tsi->tsi_fid), mdsinum);
+ RETURN(-EPERM);
+ }
+
+ fo = ofd_object_find_exists(tsi->tsi_env, ofd, &tsi->tsi_fid);
+ if (IS_ERR(fo))
+ GOTO(out, rc = PTR_ERR(fo));
+
+ la_from_obdo(&fti->fti_attr, &body->oa, body->oa.o_valid);
+ fti->fti_attr.la_valid &= ~LA_TYPE;
+
+ if (body->oa.o_valid & OBD_MD_FLFID) {
+ ff = &fti->fti_mds_fid;
+ ofd_prepare_fidea(ff, &body->oa);
+ }
+
+ /* setting objects attributes (including owner/group) */
+ rc = ofd_attr_set(tsi->tsi_env, fo, &fti->fti_attr, ff);
+ if (rc != 0)
+ GOTO(out_put, rc);
+
+ obdo_from_la(&repbody->oa, &fti->fti_attr,
+ OFD_VALID_FLAGS | LA_UID | LA_GID);
+ tgt_drop_id(tsi->tsi_exp, &repbody->oa);
+
+ ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_SETATTR,
+ tsi->tsi_jobid, 1);
+ EXIT;
+out_put:
+ ofd_object_put(tsi->tsi_env, fo);
+out:
+ if (rc == 0) {
+ /* we do not call this before to avoid lu_object_find() in
+ * ->lvbo_update() holding another reference on the object.
+ * otherwise concurrent destroy can make the object unavailable
+ * for 2nd lu_object_find() waiting for the first reference
+ * to go... deadlock! */
+ res = ldlm_resource_get(ofd->ofd_namespace, NULL,
+ &tsi->tsi_resid, LDLM_EXTENT, 0);
+ if (!IS_ERR(res)) {
+ ldlm_res_lvbo_update(res, NULL, 0);
+ ldlm_resource_putref(res);
+ }
+ }
+ return rc;
+}
+
+/**
+ * Destroy OST orphans.
+ *
+ * This is part of OST_CREATE RPC handling. If there is flag OBD_FL_DELORPHAN
+ * set then we must destroy possible orphaned objects.
+ *
+ * \param[in] env execution environment
+ * \param[in] exp OBD export
+ * \param[in] ofd OFD device
+ * \param[in] oa obdo structure for reply
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_orphans_destroy(const struct lu_env *env,
+ struct obd_export *exp,
+ struct ofd_device *ofd, struct obdo *oa)
+{
+ struct ofd_thread_info *info = ofd_info(env);
+ struct lu_fid *fid = &info->fti_fid;
+ struct ost_id *oi = &oa->o_oi;
+ struct ofd_seq *oseq;
+ obd_seq seq = ostid_seq(oi);
+ obd_id end_id = ostid_id(oi);
+ obd_id last;
+ obd_id oid;
+ int skip_orphan;
+ int rc = 0;
+
+ ENTRY;
+
+ oseq = ofd_seq_get(ofd, seq);
+ if (oseq == NULL) {
+ CERROR("%s: Can not find seq for "DOSTID"\n",
+ ofd_name(ofd), POSTID(oi));
+ RETURN(-EINVAL);
+ }
+
+ *fid = oi->oi_fid;
+ last = ofd_seq_last_oid(oseq);
+ oid = last;
+
+ LASSERT(exp != NULL);
+ skip_orphan = !!(exp_connect_flags(exp) & OBD_CONNECT_SKIP_ORPHAN);
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_OST_NODESTROY))
+ goto done;
+
+ LCONSOLE(D_INFO, "%s: deleting orphan objects from "DOSTID
+ " to "DOSTID"\n", ofd_name(ofd), seq, end_id + 1, seq, last);
+
+ while (oid > end_id) {
+ rc = fid_set_id(fid, oid);
+ if (unlikely(rc != 0))
+ GOTO(out_put, rc);
+
+ rc = ofd_destroy_by_fid(env, ofd, fid, 1);
+ if (rc != 0 && rc != -ENOENT && rc != -ESTALE &&
+ likely(rc != -EREMCHG && rc != -EINPROGRESS))
+ /* this is pretty fatal... */
+ CEMERG("%s: error destroying precreated id "
+ DFID": rc = %d\n",
+ ofd_name(ofd), PFID(fid), rc);
+
+ oid--;
+ if (!skip_orphan) {
+ ofd_seq_last_oid_set(oseq, oid);
+ /* update last_id on disk periodically so that if we
+ * restart * we don't need to re-scan all of the just
+ * deleted objects. */
+ if ((oid & 511) == 0)
+ ofd_seq_last_oid_write(env, ofd, oseq);
+ }
+ }
+
+ CDEBUG(D_HA, "%s: after destroy: set last_id to "DOSTID"\n",
+ ofd_name(ofd), seq, oid);
+
+done:
+ if (!skip_orphan) {
+ ofd_seq_last_oid_set(oseq, oid);
+ rc = ofd_seq_last_oid_write(env, ofd, oseq);
+ } else {
+ /* don't reuse orphan object, return last used objid */
+ ostid_set_id(oi, last);
+ rc = 0;
+ }
+
+ GOTO(out_put, rc);
+
+out_put:
+ ofd_seq_put(env, oseq);
+ return rc;
+}
+
+/**
+ * OFD request handler for OST_CREATE RPC.
+ *
+ * This is OFD-specific part of request handling. Its main purpose is to
+ * create new data objects on OST, but it also used to destroy orphans.
+ *
+ * \param[in] tsi target session environment for this request
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_create_hdl(struct tgt_session_info *tsi)
+{
+ struct ptlrpc_request *req = tgt_ses_req(tsi);
+ struct ost_body *repbody;
+ const struct obdo *oa = &tsi->tsi_ost_body->oa;
+ struct obdo *rep_oa;
+ struct obd_export *exp = tsi->tsi_exp;
+ struct ofd_device *ofd = ofd_exp(exp);
+ obd_seq seq = ostid_seq(&oa->o_oi);
+ obd_id oid = ostid_id(&oa->o_oi);
+ struct ofd_seq *oseq;
+ int rc = 0, diff;
+ int sync_trans = 0;
+
+ ENTRY;
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_OST_EROFS))
+ RETURN(-EROFS);
+
+ repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
+ if (repbody == NULL)
+ RETURN(-ENOMEM);
+
+ down_read(&ofd->ofd_lastid_rwsem);
+ /* Currently, for safe, we do not distinguish which LAST_ID is broken,
+ * we may do that in the future.
+ * Return -ENOSPC until the LAST_ID rebuilt. */
+ if (unlikely(ofd->ofd_lastid_rebuilding))
+ GOTO(out_sem, rc = -ENOSPC);
+
+ rep_oa = &repbody->oa;
+ rep_oa->o_oi = oa->o_oi;
+
+ LASSERT(seq >= FID_SEQ_OST_MDT0);
+ LASSERT(oa->o_valid & OBD_MD_FLGROUP);
+
+ CDEBUG(D_INFO, "ofd_create("DOSTID")\n", POSTID(&oa->o_oi));
+
+ oseq = ofd_seq_load(tsi->tsi_env, ofd, seq);
+ if (IS_ERR(oseq)) {
+ CERROR("%s: Can't find FID Sequence "LPX64": rc = %ld\n",
+ ofd_name(ofd), seq, PTR_ERR(oseq));
+ GOTO(out_sem, rc = -EINVAL);
+ }
+
+ if ((oa->o_valid & OBD_MD_FLFLAGS) &&
+ (oa->o_flags & OBD_FL_RECREATE_OBJS)) {
+ if (!ofd_obd(ofd)->obd_recovering ||
+ oid > ofd_seq_last_oid(oseq)) {
+ CERROR("%s: recreate objid "DOSTID" > last id "LPU64
+ "\n", ofd_name(ofd), POSTID(&oa->o_oi),
+ ofd_seq_last_oid(oseq));
+ GOTO(out_nolock, rc = -EINVAL);
+ }
+ /* Do nothing here, we re-create objects during recovery
+ * upon write replay, see ofd_preprw_write() */
+ GOTO(out_nolock, rc = 0);
+ }
+ /* former ofd_handle_precreate */
+ if ((oa->o_valid & OBD_MD_FLFLAGS) &&
+ (oa->o_flags & OBD_FL_DELORPHAN)) {
+ exp->exp_filter_data.fed_lastid_gen = ofd->ofd_lastid_gen;
+
+ /* destroy orphans */
+ if (lustre_msg_get_conn_cnt(tgt_ses_req(tsi)->rq_reqmsg) <
+ exp->exp_conn_cnt) {
+ CERROR("%s: dropping old orphan cleanup request\n",
+ ofd_name(ofd));
+ GOTO(out_nolock, rc = 0);
+ }
+ /* This causes inflight precreates to abort and drop lock */
+ oseq->os_destroys_in_progress = 1;
+ mutex_lock(&oseq->os_create_lock);
+ if (!oseq->os_destroys_in_progress) {
+ CERROR("%s:["LPU64"] destroys_in_progress already"
+ " cleared\n", ofd_name(ofd), seq);
+ ostid_set_id(&rep_oa->o_oi, ofd_seq_last_oid(oseq));
+ GOTO(out, rc = 0);
+ }
+ diff = oid - ofd_seq_last_oid(oseq);
+ CDEBUG(D_HA, "ofd_last_id() = "LPU64" -> diff = %d\n",
+ ofd_seq_last_oid(oseq), diff);
+ if (-diff > OST_MAX_PRECREATE) {
+ /* Let MDS know that we are so far ahead. */
+ ostid_set_id(&rep_oa->o_oi, ofd_seq_last_oid(oseq) + 1);
+ rc = 0;
+ } else if (diff < 0) {
+ rc = ofd_orphans_destroy(tsi->tsi_env, exp,
+ ofd, rep_oa);
+ oseq->os_destroys_in_progress = 0;
+ } else {
+ /* XXX: Used by MDS for the first time! */
+ oseq->os_destroys_in_progress = 0;
+ }
+ } else {
+ if (unlikely(exp->exp_filter_data.fed_lastid_gen !=
+ ofd->ofd_lastid_gen)) {
+ /* Keep the export ref so we can send the reply. */
+ ofd_obd_disconnect(class_export_get(exp));
+ GOTO(out_nolock, rc = -ENOTCONN);
+ }
+
+ mutex_lock(&oseq->os_create_lock);
+ if (lustre_msg_get_conn_cnt(tgt_ses_req(tsi)->rq_reqmsg) <
+ exp->exp_conn_cnt) {
+ CERROR("%s: dropping old precreate request\n",
+ ofd_name(ofd));
+ GOTO(out, rc = 0);
+ }
+ /* only precreate if seq is 0, IDIF or normal and also o_id
+ * must be specfied */
+ if ((!fid_seq_is_mdt(seq) && !fid_seq_is_norm(seq) &&
+ !fid_seq_is_idif(seq)) || oid == 0) {
+ diff = 1; /* shouldn't we create this right now? */
+ } else {
+ diff = oid - ofd_seq_last_oid(oseq);
+ /* Do sync create if the seq is about to used up */
+ if (fid_seq_is_idif(seq) || fid_seq_is_mdt0(seq)) {
+ if (unlikely(oid >= IDIF_MAX_OID - 1))
+ sync_trans = 1;
+ } else if (fid_seq_is_norm(seq)) {
+ if (unlikely(oid >=
+ LUSTRE_DATA_SEQ_MAX_WIDTH - 1))
+ sync_trans = 1;
+ } else {
+ CERROR("%s : invalid o_seq "DOSTID"\n",
+ ofd_name(ofd), POSTID(&oa->o_oi));
+ GOTO(out, rc = -EINVAL);
+ }
+ }
+ }
+ if (diff > 0) {
+ cfs_time_t enough_time = cfs_time_shift(DISK_TIMEOUT);
+ obd_id next_id;
+ int created = 0;
+ int count;
+
+ if (!(oa->o_valid & OBD_MD_FLFLAGS) ||
+ !(oa->o_flags & OBD_FL_DELORPHAN)) {
+ /* don't enforce grant during orphan recovery */
+ rc = ofd_grant_create(tsi->tsi_env,
+ ofd_obd(ofd)->obd_self_export,
+ &diff);
+ if (rc) {
+ CDEBUG(D_HA, "%s: failed to acquire grant "
+ "space for precreate (%d): rc = %d\n",
+ ofd_name(ofd), diff, rc);
+ diff = 0;
+ }
+ }
+
+ /* This can happen if a new OST is formatted and installed
+ * in place of an old one at the same index. Instead of
+ * precreating potentially millions of deleted old objects
+ * (possibly filling the OST), only precreate the last batch.
+ * LFSCK will eventually clean up any orphans. LU-14 */
+ if (diff > 5 * OST_MAX_PRECREATE) {
+ diff = OST_MAX_PRECREATE / 2;
+ LCONSOLE_WARN("%s: precreate FID "DOSTID" is over %u "
+ "larger than the LAST_ID "DOSTID", only "
+ "precreating the last %u objects.\n",
+ ofd_name(ofd), POSTID(&oa->o_oi),
+ 5 * OST_MAX_PRECREATE,
+ POSTID(&oseq->os_oi), diff);
+ ofd_seq_last_oid_set(oseq, ostid_id(&oa->o_oi) - diff);
+ }
+
+ while (diff > 0) {
+ next_id = ofd_seq_last_oid(oseq) + 1;
+ count = ofd_precreate_batch(ofd, diff);
+
+ CDEBUG(D_HA, "%s: reserve %d objects in group "LPX64
+ " at "LPU64"\n", ofd_name(ofd),
+ count, seq, next_id);
+
+ if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
+ && cfs_time_after(jiffies, enough_time)) {
+ CDEBUG(D_HA, "%s: Slow creates, %d/%d objects"
+ " created at a rate of %d/s\n",
+ ofd_name(ofd), created, diff + created,
+ created / DISK_TIMEOUT);
+ break;
+ }
+
+ rc = ofd_precreate_objects(tsi->tsi_env, ofd, next_id,
+ oseq, count, sync_trans);
+ if (rc > 0) {
+ created += rc;
+ diff -= rc;
+ } else if (rc < 0) {
+ break;
+ }
+ }
+
+ if (diff > 0 &&
+ lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
+ LCONSOLE_WARN("%s: can't create the same count of"
+ " objects when replaying the request"
+ " (diff is %d). see LU-4621\n",
+ ofd_name(ofd), diff);
+
+ if (created > 0)
+ /* some objects got created, we can return
+ * them, even if last creation failed */
+ rc = 0;
+ else
+ CERROR("%s: unable to precreate: rc = %d\n",
+ ofd_name(ofd), rc);
+
+ if (!(oa->o_valid & OBD_MD_FLFLAGS) ||
+ !(oa->o_flags & OBD_FL_DELORPHAN))
+ ofd_grant_commit(tsi->tsi_env,
+ ofd_obd(ofd)->obd_self_export, rc);
+
+ ostid_set_id(&rep_oa->o_oi, ofd_seq_last_oid(oseq));
+ }
+ EXIT;
+ ofd_counter_incr(exp, LPROC_OFD_STATS_CREATE,
+ tsi->tsi_jobid, 1);
+out:
+ mutex_unlock(&oseq->os_create_lock);
+out_nolock:
+ if (rc == 0) {
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 8, 53, 0)
+ struct ofd_thread_info *info = ofd_info(tsi->tsi_env);
+ struct lu_fid *fid = &info->fti_fid;
+
+ /* For compatible purpose, it needs to convert back to
+ * OST ID before put it on wire. */
+ *fid = rep_oa->o_oi.oi_fid;
+ fid_to_ostid(fid, &rep_oa->o_oi);
+#endif
+ rep_oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP;
+ }
+ ofd_seq_put(tsi->tsi_env, oseq);
+
+out_sem:
+ up_read(&ofd->ofd_lastid_rwsem);
+ return rc;
+}
+
+/**
+ * OFD request handler for OST_DESTROY RPC.
+ *
+ * This is OFD-specific part of request handling. It destroys data objects
+ * related to destroyed object on MDT.
+ *
+ * \param[in] tsi target session environment for this request
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_destroy_hdl(struct tgt_session_info *tsi)
+{
+ const struct ost_body *body = tsi->tsi_ost_body;
+ struct ost_body *repbody;
+ struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
+ struct ofd_thread_info *fti = tsi2ofd_info(tsi);
+ struct lu_fid *fid = &fti->fti_fid;
+ obd_id oid;
+ obd_count count;
+ int rc = 0;
+
+ ENTRY;
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_OST_EROFS))
+ RETURN(-EROFS);
+
+ /* This is old case for clients before Lustre 2.4 */
+ /* If there's a DLM request, cancel the locks mentioned in it */
+ if (req_capsule_field_present(tsi->tsi_pill, &RMF_DLM_REQ,
+ RCL_CLIENT)) {
+ struct ldlm_request *dlm;
+
+ dlm = req_capsule_client_get(tsi->tsi_pill, &RMF_DLM_REQ);
+ if (dlm == NULL)
+ RETURN(-EFAULT);
+ ldlm_request_cancel(tgt_ses_req(tsi), dlm, 0, LATF_SKIP);
+ }
+
+ *fid = body->oa.o_oi.oi_fid;
+ oid = ostid_id(&body->oa.o_oi);
+ LASSERT(oid != 0);
+
+ repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
+
+ /* check that o_misc makes sense */
+ if (body->oa.o_valid & OBD_MD_FLOBJCOUNT)
+ count = body->oa.o_misc;
+ else
+ count = 1; /* default case - single destroy */
+
+ CDEBUG(D_HA, "%s: Destroy object "DOSTID" count %d\n", ofd_name(ofd),
+ POSTID(&body->oa.o_oi), count);
+
+ while (count > 0) {
+ int lrc;
+
+ lrc = ofd_destroy_by_fid(tsi->tsi_env, ofd, fid, 0);
+ if (lrc == -ENOENT) {
+ CDEBUG(D_INODE,
+ "%s: destroying non-existent object "DFID"\n",
+ ofd_name(ofd), PFID(fid));
+ /* rewrite rc with -ENOENT only if it is 0 */
+ if (rc == 0)
+ rc = lrc;
+ } else if (lrc != 0) {
+ CERROR("%s: error destroying object "DFID": %d\n",
+ ofd_name(ofd), PFID(fid), lrc);
+ rc = lrc;
+ }
+
+ count--;
+ oid++;
+ lrc = fid_set_id(fid, oid);
+ if (unlikely(lrc != 0 && count > 0))
+ GOTO(out, rc = lrc);
+ }
+
+ ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_DESTROY,
+ tsi->tsi_jobid, 1);
+
+ GOTO(out, rc);
+
+out:
+ fid_to_ostid(fid, &repbody->oa.o_oi);
+ return rc;
+}
+
+/**
+ * OFD request handler for OST_STATFS RPC.
+ *
+ * This function gets statfs data from storage as part of request
+ * processing.
+ *
+ * \param[in] tsi target session environment for this request
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_statfs_hdl(struct tgt_session_info *tsi)
+{
+ struct obd_statfs *osfs;
+ int rc;
+
+ ENTRY;
+
+ osfs = req_capsule_server_get(tsi->tsi_pill, &RMF_OBD_STATFS);
+
+ rc = ofd_statfs(tsi->tsi_env, tsi->tsi_exp, osfs,
+ cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), 0);
+ if (rc != 0)
+ CERROR("%s: statfs failed: rc = %d\n",
+ tgt_name(tsi->tsi_tgt), rc);
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_OST_STATFS_EINPROGRESS))
+ rc = -EINPROGRESS;
+
+ ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_STATFS,
+ tsi->tsi_jobid, 1);
+
+ RETURN(rc);
+}
+
+/**
+ * OFD request handler for OST_SYNC RPC.
+ *
+ * Sync object data or all filesystem data to the disk and pack the
+ * result in reply.
+ *
+ * \param[in] tsi target session environment for this request
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_sync_hdl(struct tgt_session_info *tsi)
+{
+ struct ost_body *body = tsi->tsi_ost_body;
+ struct ost_body *repbody;
+ struct ofd_thread_info *fti = tsi2ofd_info(tsi);
+ struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
+ struct ofd_object *fo = NULL;
+ int rc = 0;
+
+ ENTRY;
+
+ repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
+
+ /* if no objid is specified, it means "sync whole filesystem" */
+ if (!fid_is_zero(&tsi->tsi_fid)) {
+ fo = ofd_object_find_exists(tsi->tsi_env, ofd, &tsi->tsi_fid);
+ if (IS_ERR(fo))
+ RETURN(PTR_ERR(fo));
+ }
+
+ rc = tgt_sync(tsi->tsi_env, tsi->tsi_tgt,
+ fo != NULL ? ofd_object_child(fo) : NULL,
+ repbody->oa.o_size, repbody->oa.o_blocks);
+ if (rc)
+ GOTO(put, rc);
+
+ ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_SYNC,
+ tsi->tsi_jobid, 1);
+ if (fo == NULL)
+ RETURN(0);
+
+ repbody->oa.o_oi = body->oa.o_oi;
+ repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
+
+ rc = ofd_attr_get(tsi->tsi_env, fo, &fti->fti_attr);
+ if (rc == 0)
+ obdo_from_la(&repbody->oa, &fti->fti_attr,
+ OFD_VALID_FLAGS);
+ else
+ /* don't return rc from getattr */
+ rc = 0;
+ EXIT;
+put:
+ if (fo != NULL)
+ ofd_object_put(tsi->tsi_env, fo);
+ return rc;
+}
+
+/**
+ * OFD request handler for OST_PUNCH RPC.
+ *
+ * This is part of request processing. Validate request fields,
+ * punch (truncate) the given OFD object and pack reply.
+ *
+ * \param[in] tsi target session environment for this request
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_punch_hdl(struct tgt_session_info *tsi)
+{
+ const struct obdo *oa = &tsi->tsi_ost_body->oa;
+ struct ost_body *repbody;
+ struct ofd_thread_info *info = tsi2ofd_info(tsi);
+ struct ldlm_namespace *ns = tsi->tsi_tgt->lut_obd->obd_namespace;
+ struct ldlm_resource *res;
+ struct ofd_object *fo;
+ struct filter_fid *ff = NULL;
+ __u64 flags = 0;
+ struct lustre_handle lh = { 0, };
+ int rc;
+ __u64 start, end;
+ bool srvlock;
+
+ ENTRY;
+
+ /* check that we do support OBD_CONNECT_TRUNCLOCK. */
+ CLASSERT(OST_CONNECT_SUPPORTED & OBD_CONNECT_TRUNCLOCK);
+
+ if ((oa->o_valid & (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS)) !=
+ (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS))
+ RETURN(err_serious(-EPROTO));
+
+ repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
+ if (repbody == NULL)
+ RETURN(err_serious(-ENOMEM));
+
+ /* punch start,end are passed in o_size,o_blocks throught wire */
+ start = oa->o_size;
+ end = oa->o_blocks;
+
+ if (end != OBD_OBJECT_EOF) /* Only truncate is supported */
+ RETURN(-EPROTO);
+
+ /* standard truncate optimization: if file body is completely
+ * destroyed, don't send data back to the server. */
+ if (start == 0)
+ flags |= LDLM_FL_AST_DISCARD_DATA;
+
+ repbody->oa.o_oi = oa->o_oi;
+ repbody->oa.o_valid = OBD_MD_FLID;
+
+ srvlock = oa->o_valid & OBD_MD_FLFLAGS &&
+ oa->o_flags & OBD_FL_SRVLOCK;
+
+ if (srvlock) {
+ rc = tgt_extent_lock(ns, &tsi->tsi_resid, start, end, &lh,
+ LCK_PW, &flags);
+ if (rc != 0)
+ RETURN(rc);
+ }
+
+ CDEBUG(D_INODE, "calling punch for object "DFID", valid = "LPX64
+ ", start = "LPD64", end = "LPD64"\n", PFID(&tsi->tsi_fid),
+ oa->o_valid, start, end);
+
+ fo = ofd_object_find_exists(tsi->tsi_env, ofd_exp(tsi->tsi_exp),
+ &tsi->tsi_fid);
+ if (IS_ERR(fo))
+ GOTO(out, rc = PTR_ERR(fo));
+
+ la_from_obdo(&info->fti_attr, oa,
+ OBD_MD_FLMTIME | OBD_MD_FLATIME | OBD_MD_FLCTIME);
+ info->fti_attr.la_size = start;
+ info->fti_attr.la_valid |= LA_SIZE;
+
+ if (oa->o_valid & OBD_MD_FLFID) {
+ ff = &info->fti_mds_fid;
+ ofd_prepare_fidea(ff, oa);
+ }
+
+ rc = ofd_object_punch(tsi->tsi_env, fo, start, end, &info->fti_attr,
+ ff, (struct obdo *)oa);
+ if (rc)
+ GOTO(out_put, rc);
+
+ ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_PUNCH,
+ tsi->tsi_jobid, 1);
+ EXIT;
+out_put:
+ ofd_object_put(tsi->tsi_env, fo);
+out:
+ if (srvlock)
+ tgt_extent_unlock(&lh, LCK_PW);
+ if (rc == 0) {
+ /* we do not call this before to avoid lu_object_find() in
+ * ->lvbo_update() holding another reference on the object.
+ * otherwise concurrent destroy can make the object unavailable
+ * for 2nd lu_object_find() waiting for the first reference
+ * to go... deadlock! */
+ res = ldlm_resource_get(ns, NULL, &tsi->tsi_resid,
+ LDLM_EXTENT, 0);
+ if (!IS_ERR(res)) {
+ ldlm_res_lvbo_update(res, NULL, 0);
+ ldlm_resource_putref(res);
+ }
+ }
+ return rc;
+}
+
+/**
+ * OFD request handler for OST_QUOTACTL RPC.
+ *
+ * This is part of request processing to validate incoming request fields,
+ * get the requested data from OSD and pack reply.
+ *
+ * \param[in] tsi target session environment for this request
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_quotactl(struct tgt_session_info *tsi)
+{
+ struct obd_quotactl *oqctl, *repoqc;
+ struct lu_nodemap *nodemap =
+ tsi->tsi_exp->exp_target_data.ted_nodemap;
+ int id;
+ int rc;
+
+ ENTRY;
+
+ oqctl = req_capsule_client_get(tsi->tsi_pill, &RMF_OBD_QUOTACTL);
+ if (oqctl == NULL)
+ RETURN(err_serious(-EPROTO));
+
+ repoqc = req_capsule_server_get(tsi->tsi_pill, &RMF_OBD_QUOTACTL);
+ if (repoqc == NULL)
+ RETURN(err_serious(-ENOMEM));
+
+ /* report success for quota on/off for interoperability with current MDT
+ * stack */
+ if (oqctl->qc_cmd == Q_QUOTAON || oqctl->qc_cmd == Q_QUOTAOFF)
+ RETURN(0);
+
+ *repoqc = *oqctl;
+
+ id = repoqc->qc_id;
+ if (oqctl->qc_type == USRQUOTA)
+ id = nodemap_map_id(nodemap, NODEMAP_UID,
+ NODEMAP_CLIENT_TO_FS,
+ repoqc->qc_id);
+ else if (oqctl->qc_type == GRPQUOTA)
+ id = nodemap_map_id(nodemap, NODEMAP_GID,
+ NODEMAP_CLIENT_TO_FS,
+ repoqc->qc_id);
+
+ if (repoqc->qc_id != id)
+ swap(repoqc->qc_id, id);
+
+ rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom, repoqc);
+
+ ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_QUOTACTL,
+ tsi->tsi_jobid, 1);
+
+ if (repoqc->qc_id != id)
+ swap(repoqc->qc_id, id);
+
+ RETURN(rc);
+}
+
+/**
+ * Calculate the amount of time for lock prolongation.
+ *
+ * This is helper for ofd_prolong_extent_locks() function to get
+ * the timeout extra time.
+ *
+ * \param[in] req current request
+ *
+ * \retval amount of time to extend the timeout with
+ */
+static inline int prolong_timeout(struct ptlrpc_request *req,
+ struct ldlm_lock *lock)
+{
+ struct ptlrpc_service_part *svcpt = req->rq_rqbd->rqbd_svcpt;
+
+ if (AT_OFF)
+ return obd_timeout / 2;
+
+ /* We are in the middle of the process - BL AST is sent, CANCEL
+ is ahead. Take half of AT + IO process time. */
+ return at_est2timeout(at_get(&svcpt->scp_at_estimate)) +
+ (ldlm_bl_timeout(lock) >> 1);
+}
+
+/**
+ * Prolong single lock timeout.
+ *
+ * This is supplemental function to the ofd_prolong_locks(). It prolongs
+ * a single lock.
+ *
+ * \param[in] tsi target session environment for this request
+ * \param[in] lock LDLM lock to prolong
+ * \param[in] extent related extent
+ * \param[in] timeout timeout value to add
+ *
+ * \retval 0 if lock is not suitable for prolongation
+ * \retval 1 if lock was prolonged successfully
+ */
+static int ofd_prolong_one_lock(struct tgt_session_info *tsi,
+ struct ldlm_lock *lock,
+ struct ldlm_extent *extent)
+{
+ int timeout = prolong_timeout(tgt_ses_req(tsi), lock);
+
+ if (lock->l_flags & LDLM_FL_DESTROYED) /* lock already cancelled */
+ return 0;
+
+ /* XXX: never try to grab resource lock here because we're inside
+ * exp_bl_list_lock; in ldlm_lockd.c to handle waiting list we take
+ * res lock and then exp_bl_list_lock. */
+
+ if (!(lock->l_flags & LDLM_FL_AST_SENT))
+ /* ignore locks not being cancelled */
+ return 0;
+
+ LDLM_DEBUG(lock, "refreshed for req x"LPU64" ext("LPU64"->"LPU64") "
+ "to %ds.\n", tgt_ses_req(tsi)->rq_xid, extent->start,
+ extent->end, timeout);
+
+ /* OK. this is a possible lock the user holds doing I/O
+ * let's refresh eviction timer for it */
+ ldlm_refresh_waiting_lock(lock, timeout);
+ return 1;
+}
+
+/**
+ * Prolong lock timeout for the given extent.
+ *
+ * This function finds all locks related with incoming request and
+ * prolongs their timeout.
+ *
+ * If a client is holding a lock for a long time while it sends
+ * read or write RPCs to the OST for the object under this lock,
+ * then we don't want the OST to evict the client. Otherwise,
+ * if the network or disk is very busy then the client may not
+ * be able to make any progress to clear out dirty pages under
+ * the lock and the application will fail.
+ *
+ * Every time a Bulk Read/Write (BRW) request arrives for the object
+ * covered by the lock, extend the timeout on that lock. The RPC should
+ * contain a lock handle for the lock it is using, but this
+ * isn't handled correctly by all client versions, and the
+ * request may cover multiple locks.
+ *
+ * \param[in] tsi target session environment for this request
+ * \param[in] start start of extent
+ * \param[in] end end of extent
+ *
+ * \retval number of prolonged locks
+ */
+static int ofd_prolong_extent_locks(struct tgt_session_info *tsi,
+ __u64 start, __u64 end)
+{
+ struct obd_export *exp = tsi->tsi_exp;
+ struct obdo *oa = &tsi->tsi_ost_body->oa;
+ struct ldlm_extent extent = {
+ .start = start,
+ .end = end
+ };
+ struct ldlm_lock *lock;
+ int lock_count = 0;
+
+ ENTRY;
+
+ if (oa->o_valid & OBD_MD_FLHANDLE) {
+ /* mostly a request should be covered by only one lock, try
+ * fast path. */
+ lock = ldlm_handle2lock(&oa->o_handle);
+ if (lock != NULL) {
+ /* Fast path to check if the lock covers the whole IO
+ * region exclusively. */
+ if (lock->l_granted_mode == LCK_PW &&
+ ldlm_extent_contain(&lock->l_policy_data.l_extent,
+ &extent)) {
+ /* bingo */
+ LASSERT(lock->l_export == exp);
+ lock_count = ofd_prolong_one_lock(tsi, lock,
+ &extent);
+ LDLM_LOCK_PUT(lock);
+ RETURN(lock_count);
+ }
+ LDLM_LOCK_PUT(lock);
+ }
+ }
+
+ spin_lock_bh(&exp->exp_bl_list_lock);
+ list_for_each_entry(lock, &exp->exp_bl_list, l_exp_list) {
+ LASSERT(lock->l_flags & LDLM_FL_AST_SENT);
+ LASSERT(lock->l_resource->lr_type == LDLM_EXTENT);
+
+ if (!ldlm_res_eq(&tsi->tsi_resid, &lock->l_resource->lr_name))
+ continue;
+
+ if (!ldlm_extent_overlap(&lock->l_policy_data.l_extent,
+ &extent))
+ continue;
+
+ lock_count += ofd_prolong_one_lock(tsi, lock, &extent);
+ }
+ spin_unlock_bh(&exp->exp_bl_list_lock);
+
+ RETURN(lock_count);
+}
+
+/**
+ * Implementation of ptlrpc_hpreq_ops::hpreq_lock_match for OFD RW requests.
+ *
+ * Determine if \a lock and the lock from request \a req are equivalent
+ * by comparing their resource names, modes, and extents.
+ *
+ * It is used to give priority to read and write RPCs being done
+ * under this lock so that the client can drop the contended
+ * lock more quickly and let other clients use it. This improves
+ * overall performance in the case where the first client gets a
+ * very large lock extent that prevents other clients from
+ * submitting their writes.
+ *
+ * \param[in] req ptlrpc_request being processed
+ * \param[in] lock contended lock to match
+ *
+ * \retval 1 if lock is matched
+ * \retval 0 otherwise
+ */
+static int ofd_rw_hpreq_lock_match(struct ptlrpc_request *req,
+ struct ldlm_lock *lock)
+{
+ struct niobuf_remote *rnb;
+ struct obd_ioobj *ioo;
+ ldlm_mode_t mode;
+ struct ldlm_extent ext;
+ __u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
+
+ ENTRY;
+
+ ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
+ LASSERT(ioo != NULL);
+
+ rnb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
+ LASSERT(rnb != NULL);
+
+ ext.start = rnb->rnb_offset;
+ rnb += ioo->ioo_bufcnt - 1;
+ ext.end = rnb->rnb_offset + rnb->rnb_len - 1;
+
+ LASSERT(lock->l_resource != NULL);
+ if (!ostid_res_name_eq(&ioo->ioo_oid, &lock->l_resource->lr_name))
+ RETURN(0);
+
+ /* a bulk write can only hold a reference on a PW extent lock */
+ mode = LCK_PW;
+ if (opc == OST_READ)
+ /* whereas a bulk read can be protected by either a PR or PW
+ * extent lock */
+ mode |= LCK_PR;
+
+ if (!(lock->l_granted_mode & mode))
+ RETURN(0);
+
+ RETURN(ldlm_extent_overlap(&lock->l_policy_data.l_extent, &ext));
+}
+
+/**
+ * Implementation of ptlrpc_hpreq_ops::hpreq_lock_check for OFD RW requests.
+ *
+ * Check for whether the given PTLRPC request (\a req) is blocking
+ * an LDLM lock cancel.
+ *
+ * \param[in] req the incoming request
+ *
+ * \retval 1 if \a req is blocking an LDLM lock cancel
+ * \retval 0 if it is not
+ */
+static int ofd_rw_hpreq_check(struct ptlrpc_request *req)
+{
+ struct tgt_session_info *tsi;
+ struct obd_ioobj *ioo;
+ struct niobuf_remote *rnb;
+ __u64 start, end;
+ int lock_count;
+
+ ENTRY;
+
+ /* Don't use tgt_ses_info() to get session info, because lock_match()
+ * can be called while request has no processing thread yet. */
+ tsi = lu_context_key_get(&req->rq_session, &tgt_session_key);
+
+ /*
+ * Use LASSERT below because malformed RPCs should have
+ * been filtered out in tgt_hpreq_handler().
+ */
+ ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
+ LASSERT(ioo != NULL);
+
+ rnb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
+ LASSERT(rnb != NULL);
+ LASSERT(!(rnb->rnb_flags & OBD_BRW_SRVLOCK));
+
+ start = rnb->rnb_offset;
+ rnb += ioo->ioo_bufcnt - 1;
+ end = rnb->rnb_offset + rnb->rnb_len - 1;
+
+ DEBUG_REQ(D_RPCTRACE, req, "%s %s: refresh rw locks: "DFID
+ " ("LPU64"->"LPU64")\n",
+ tgt_name(tsi->tsi_tgt), current->comm,
+ PFID(&tsi->tsi_fid), start, end);
+
+ lock_count = ofd_prolong_extent_locks(tsi, start, end);
+
+ CDEBUG(D_DLMTRACE, "%s: refreshed %u locks timeout for req %p.\n",
+ tgt_name(tsi->tsi_tgt), lock_count, req);
+
+ RETURN(lock_count > 0);
+}
+
+/**
+ * Implementation of ptlrpc_hpreq_ops::hpreq_lock_fini for OFD RW requests.
+ *
+ * Called after the request has been handled. It refreshes lock timeout again
+ * so that client has more time to send lock cancel RPC.
+ *
+ * \param[in] req request which is being processed.
+ */
+static void ofd_rw_hpreq_fini(struct ptlrpc_request *req)
+{
+ ofd_rw_hpreq_check(req);
+}
+
+/**
+ * Implementation of ptlrpc_hpreq_ops::hpreq_lock_match for OST_PUNCH request.
+ *
+ * This function checks if the given lock is the same by its resname, mode
+ * and extent as one taken from the request.
+ * It is used to give priority to punch/truncate RPCs that might lead to
+ * the fastest release of that lock when a lock is contended.
+ *
+ * \param[in] req ptlrpc_request being processed
+ * \param[in] lock contended lock to match
+ *
+ * \retval 1 if lock is matched
+ * \retval 0 otherwise
+ */
+static int ofd_punch_hpreq_lock_match(struct ptlrpc_request *req,
+ struct ldlm_lock *lock)
+{
+ struct tgt_session_info *tsi;
+
+ /* Don't use tgt_ses_info() to get session info, because lock_match()
+ * can be called while request has no processing thread yet. */
+ tsi = lu_context_key_get(&req->rq_session, &tgt_session_key);
+
+ /*
+ * Use LASSERT below because malformed RPCs should have
+ * been filtered out in tgt_hpreq_handler().
+ */
+ LASSERT(tsi->tsi_ost_body != NULL);
+ if (tsi->tsi_ost_body->oa.o_valid & OBD_MD_FLHANDLE &&
+ tsi->tsi_ost_body->oa.o_handle.cookie == lock->l_handle.h_cookie)
+ return 1;
+
+ return 0;
+}
+
+/**
+ * Implementation of ptlrpc_hpreq_ops::hpreq_lock_check for OST_PUNCH request.
+ *
+ * High-priority queue request check for whether the given punch request
+ * (\a req) is blocking an LDLM lock cancel.
+ *
+ * \param[in] req the incoming request
+ *
+ * \retval 1 if \a req is blocking an LDLM lock cancel
+ * \retval 0 if it is not
+ */
+static int ofd_punch_hpreq_check(struct ptlrpc_request *req)
+{
+ struct tgt_session_info *tsi;
+ struct obdo *oa;
+ int lock_count;
+
+ ENTRY;
+
+ /* Don't use tgt_ses_info() to get session info, because lock_match()
+ * can be called while request has no processing thread yet. */
+ tsi = lu_context_key_get(&req->rq_session, &tgt_session_key);
+ LASSERT(tsi != NULL);
+ oa = &tsi->tsi_ost_body->oa;
+
+ LASSERT(!(oa->o_valid & OBD_MD_FLFLAGS &&
+ oa->o_flags & OBD_FL_SRVLOCK));
+
+ CDEBUG(D_DLMTRACE,
+ "%s: refresh locks: "LPU64"/"LPU64" ("LPU64"->"LPU64")\n",
+ tgt_name(tsi->tsi_tgt), tsi->tsi_resid.name[0],
+ tsi->tsi_resid.name[1], oa->o_size, oa->o_blocks);
+
+ lock_count = ofd_prolong_extent_locks(tsi, oa->o_size, oa->o_blocks);
+
+ CDEBUG(D_DLMTRACE, "%s: refreshed %u locks timeout for req %p.\n",
+ tgt_name(tsi->tsi_tgt), lock_count, req);
+
+ RETURN(lock_count > 0);
+}
+
+/**
+ * Implementation of ptlrpc_hpreq_ops::hpreq_lock_fini for OST_PUNCH request.
+ *
+ * Called after the request has been handled. It refreshes lock timeout again
+ * so that client has more time to send lock cancel RPC.
+ *
+ * \param[in] req request which is being processed.
+ */
+static void ofd_punch_hpreq_fini(struct ptlrpc_request *req)
+{
+ ofd_punch_hpreq_check(req);
+}
+
+static struct ptlrpc_hpreq_ops ofd_hpreq_rw = {
+ .hpreq_lock_match = ofd_rw_hpreq_lock_match,
+ .hpreq_check = ofd_rw_hpreq_check,
+ .hpreq_fini = ofd_rw_hpreq_fini
+};
+
+static struct ptlrpc_hpreq_ops ofd_hpreq_punch = {
+ .hpreq_lock_match = ofd_punch_hpreq_lock_match,
+ .hpreq_check = ofd_punch_hpreq_check,
+ .hpreq_fini = ofd_punch_hpreq_fini
+};
+
+/**
+ * Assign high priority operations to an IO request.
+ *
+ * Check if the incoming request is a candidate for
+ * high-priority processing. If it is, assign it a high
+ * priority operations table.
+ *
+ * \param[in] tsi target session environment for this request
+ */
+static void ofd_hp_brw(struct tgt_session_info *tsi)
+{
+ struct niobuf_remote *rnb;
+ struct obd_ioobj *ioo;
+
+ ENTRY;
+
+ ioo = req_capsule_client_get(tsi->tsi_pill, &RMF_OBD_IOOBJ);
+ LASSERT(ioo != NULL); /* must exist after request preprocessing */
+ if (ioo->ioo_bufcnt > 0) {
+ rnb = req_capsule_client_get(tsi->tsi_pill, &RMF_NIOBUF_REMOTE);
+ LASSERT(rnb != NULL); /* must exist after request preprocessing */
+
+ /* no high priority if server lock is needed */
+ if (rnb->rnb_flags & OBD_BRW_SRVLOCK)
+ return;
+ }
+ tgt_ses_req(tsi)->rq_ops = &ofd_hpreq_rw;
+}
+
+/**
+ * Assign high priority operations to an punch request.
+ *
+ * Check if the incoming request is a candidate for
+ * high-priority processing. If it is, assign it a high
+ * priority operations table.
+ *
+ * \param[in] tsi target session environment for this request
+ */
+static void ofd_hp_punch(struct tgt_session_info *tsi)
+{
+ LASSERT(tsi->tsi_ost_body != NULL); /* must exists if we are here */
+ /* no high-priority if server lock is needed */
+ if (tsi->tsi_ost_body->oa.o_valid & OBD_MD_FLFLAGS &&
+ tsi->tsi_ost_body->oa.o_flags & OBD_FL_SRVLOCK)
+ return;
+ tgt_ses_req(tsi)->rq_ops = &ofd_hpreq_punch;
+}
+
+#define OBD_FAIL_OST_READ_NET OBD_FAIL_OST_BRW_NET
+#define OBD_FAIL_OST_WRITE_NET OBD_FAIL_OST_BRW_NET
+#define OST_BRW_READ OST_READ
+#define OST_BRW_WRITE OST_WRITE
+
+/**
+ * Table of OFD-specific request handlers
+ *
+ * This table contains all opcodes accepted by OFD and
+ * specifies handlers for them. The tgt_request_handler()
+ * uses such table from each target to process incoming
+ * requests.
+ */
+static struct tgt_handler ofd_tgt_handlers[] = {
+TGT_RPC_HANDLER(OST_FIRST_OPC,
+ 0, OST_CONNECT, tgt_connect,
+ &RQF_CONNECT, LUSTRE_OBD_VERSION),
+TGT_RPC_HANDLER(OST_FIRST_OPC,
+ 0, OST_DISCONNECT, tgt_disconnect,
+ &RQF_OST_DISCONNECT, LUSTRE_OBD_VERSION),
+TGT_RPC_HANDLER(OST_FIRST_OPC,
+ 0, OST_SET_INFO, ofd_set_info_hdl,
+ &RQF_OBD_SET_INFO, LUSTRE_OST_VERSION),
+TGT_OST_HDL(0, OST_GET_INFO, ofd_get_info_hdl),
+TGT_OST_HDL(HABEO_CORPUS| HABEO_REFERO, OST_GETATTR, ofd_getattr_hdl),
+TGT_OST_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR,
+ OST_SETATTR, ofd_setattr_hdl),
+TGT_OST_HDL(0 | HABEO_REFERO | MUTABOR,
+ OST_CREATE, ofd_create_hdl),
+TGT_OST_HDL(0 | HABEO_REFERO | MUTABOR,
+ OST_DESTROY, ofd_destroy_hdl),
+TGT_OST_HDL(0 | HABEO_REFERO, OST_STATFS, ofd_statfs_hdl),
+TGT_OST_HDL_HP(HABEO_CORPUS| HABEO_REFERO,
+ OST_BRW_READ, tgt_brw_read,
+ ofd_hp_brw),
+/* don't set CORPUS flag for brw_write because -ENOENT may be valid case */
+TGT_OST_HDL_HP(HABEO_CORPUS| MUTABOR, OST_BRW_WRITE, tgt_brw_write,
+ ofd_hp_brw),
+TGT_OST_HDL_HP(HABEO_CORPUS| HABEO_REFERO | MUTABOR,
+ OST_PUNCH, ofd_punch_hdl,
+ ofd_hp_punch),
+TGT_OST_HDL(HABEO_CORPUS| HABEO_REFERO, OST_SYNC, ofd_sync_hdl),
+TGT_OST_HDL(0 | HABEO_REFERO, OST_QUOTACTL, ofd_quotactl),
+};
+
+static struct tgt_opc_slice ofd_common_slice[] = {
+ {
+ .tos_opc_start = OST_FIRST_OPC,
+ .tos_opc_end = OST_LAST_OPC,
+ .tos_hs = ofd_tgt_handlers
+ },
+ {
+ .tos_opc_start = OBD_FIRST_OPC,
+ .tos_opc_end = OBD_LAST_OPC,
+ .tos_hs = tgt_obd_handlers
+ },
+ {
+ .tos_opc_start = LDLM_FIRST_OPC,
+ .tos_opc_end = LDLM_LAST_OPC,
+ .tos_hs = tgt_dlm_handlers
+ },
+ {
+ .tos_opc_start = OUT_UPDATE_FIRST_OPC,
+ .tos_opc_end = OUT_UPDATE_LAST_OPC,
+ .tos_hs = tgt_out_handlers
+ },
+ {
+ .tos_opc_start = SEQ_FIRST_OPC,
+ .tos_opc_end = SEQ_LAST_OPC,
+ .tos_hs = seq_handlers
+ },
+ {
+ .tos_opc_start = LFSCK_FIRST_OPC,
+ .tos_opc_end = LFSCK_LAST_OPC,
+ .tos_hs = tgt_lfsck_handlers
+ },
+ {
+ .tos_hs = NULL
+ }
+};
+
+/* context key constructor/destructor: ofd_key_init(), ofd_key_fini() */
+LU_KEY_INIT_FINI(ofd, struct ofd_thread_info);
+
+/**
+ * Implementation of lu_context_key::lct_key_exit.
+ *
+ * Optional method called on lu_context_exit() for all allocated
+ * keys.
+ * It is used in OFD to sanitize context values which may be re-used
+ * during another request processing by the same thread.
+ *
+ * \param[in] ctx execution context
+ * \param[in] key context key
+ * \param[in] data ofd_thread_info
+ */
static void ofd_key_exit(const struct lu_context *ctx,
struct lu_context_key *key, void *data)
{
struct ofd_thread_info *info = data;
info->fti_env = NULL;
+ info->fti_exp = NULL;
+
+ info->fti_xid = 0;
+ info->fti_pre_version = 0;
+ info->fti_used = 0;
+
+ memset(&info->fti_attr, 0, sizeof info->fti_attr);
}
struct lu_context_key ofd_thread_key = {
.lct_exit = ofd_key_exit
};
-/* type constructor/destructor: mdt_type_init, mdt_type_fini */
+/**
+ * Initialize OFD device according to parameters in the config log \a cfg.
+ *
+ * This is the main starting point of OFD initialization. It fills all OFD
+ * parameters with their initial values and calls other initializing functions
+ * to set up all OFD subsystems.
+ *
+ * \param[in] env execution environment
+ * \param[in] m OFD device
+ * \param[in] ldt LU device type of OFD
+ * \param[in] cfg configuration log
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
+ struct lu_device_type *ldt, struct lustre_cfg *cfg)
+{
+ const char *dev = lustre_cfg_string(cfg, 0);
+ struct ofd_thread_info *info = NULL;
+ struct obd_device *obd;
+ struct obd_statfs *osfs;
+ int rc;
+
+ ENTRY;
+
+ obd = class_name2obd(dev);
+ if (obd == NULL) {
+ CERROR("Cannot find obd with name %s\n", dev);
+ RETURN(-ENODEV);
+ }
+
+ rc = lu_env_refill((struct lu_env *)env);
+ if (rc != 0)
+ RETURN(rc);
+
+ obd->u.obt.obt_magic = OBT_MAGIC;
+
+ m->ofd_fmd_max_num = OFD_FMD_MAX_NUM_DEFAULT;
+ m->ofd_fmd_max_age = OFD_FMD_MAX_AGE_DEFAULT;
+
+ spin_lock_init(&m->ofd_flags_lock);
+ m->ofd_raid_degraded = 0;
+ m->ofd_syncjournal = 0;
+ ofd_slc_set(m);
+ m->ofd_grant_compat_disable = 0;
+ m->ofd_soft_sync_limit = OFD_SOFT_SYNC_LIMIT_DEFAULT;
+
+ /* statfs data */
+ spin_lock_init(&m->ofd_osfs_lock);
+ m->ofd_osfs_age = cfs_time_shift_64(-1000);
+ m->ofd_osfs_unstable = 0;
+ m->ofd_statfs_inflight = 0;
+ m->ofd_osfs_inflight = 0;
+
+ /* grant data */
+ spin_lock_init(&m->ofd_grant_lock);
+ m->ofd_tot_dirty = 0;
+ m->ofd_tot_granted = 0;
+ m->ofd_tot_pending = 0;
+ m->ofd_seq_count = 0;
+ init_waitqueue_head(&m->ofd_inconsistency_thread.t_ctl_waitq);
+ INIT_LIST_HEAD(&m->ofd_inconsistency_list);
+ spin_lock_init(&m->ofd_inconsistency_lock);
+
+ spin_lock_init(&m->ofd_batch_lock);
+ init_rwsem(&m->ofd_lastid_rwsem);
+
+ obd->u.filter.fo_fl_oss_capa = 0;
+ INIT_LIST_HEAD(&obd->u.filter.fo_capa_keys);
+ obd->u.filter.fo_capa_hash = init_capa_hash();
+ if (obd->u.filter.fo_capa_hash == NULL)
+ RETURN(-ENOMEM);
+
+ m->ofd_dt_dev.dd_lu_dev.ld_ops = &ofd_lu_ops;
+ m->ofd_dt_dev.dd_lu_dev.ld_obd = obd;
+ /* set this lu_device to obd, because error handling need it */
+ obd->obd_lu_dev = &m->ofd_dt_dev.dd_lu_dev;
+
+ rc = ofd_procfs_init(m);
+ if (rc) {
+ CERROR("Can't init ofd lprocfs, rc %d\n", rc);
+ RETURN(rc);
+ }
+
+ /* No connection accepted until configurations will finish */
+ spin_lock(&obd->obd_dev_lock);
+ obd->obd_no_conn = 1;
+ spin_unlock(&obd->obd_dev_lock);
+ obd->obd_replayable = 1;
+ if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
+ char *str = lustre_cfg_string(cfg, 4);
+
+ if (strchr(str, 'n')) {
+ CWARN("%s: recovery disabled\n", obd->obd_name);
+ obd->obd_replayable = 0;
+ }
+ }
+
+ info = ofd_info_init(env, NULL);
+ if (info == NULL)
+ RETURN(-EFAULT);
+
+ rc = ofd_stack_init(env, m, cfg);
+ if (rc) {
+ CERROR("Can't init device stack, rc %d\n", rc);
+ GOTO(err_fini_proc, rc);
+ }
+
+ ofd_procfs_add_brw_stats_symlink(m);
+
+ /* populate cached statfs data */
+ osfs = &ofd_info(env)->fti_u.osfs;
+ rc = ofd_statfs_internal(env, m, osfs, 0, NULL);
+ if (rc != 0) {
+ CERROR("%s: can't get statfs data, rc %d\n", obd->obd_name, rc);
+ GOTO(err_fini_stack, rc);
+ }
+ if (!IS_PO2(osfs->os_bsize)) {
+ CERROR("%s: blocksize (%d) is not a power of 2\n",
+ obd->obd_name, osfs->os_bsize);
+ GOTO(err_fini_stack, rc = -EPROTO);
+ }
+ m->ofd_blockbits = fls(osfs->os_bsize) - 1;
+
+ m->ofd_precreate_batch = OFD_PRECREATE_BATCH_DEFAULT;
+ if (osfs->os_bsize * osfs->os_blocks < OFD_PRECREATE_SMALL_FS)
+ m->ofd_precreate_batch = OFD_PRECREATE_BATCH_SMALL;
+
+ snprintf(info->fti_u.name, sizeof(info->fti_u.name), "%s-%s",
+ "filter"/*LUSTRE_OST_NAME*/, obd->obd_uuid.uuid);
+ m->ofd_namespace = ldlm_namespace_new(obd, info->fti_u.name,
+ LDLM_NAMESPACE_SERVER,
+ LDLM_NAMESPACE_GREEDY,
+ LDLM_NS_TYPE_OST);
+ if (m->ofd_namespace == NULL)
+ GOTO(err_fini_stack, rc = -ENOMEM);
+ /* set obd_namespace for compatibility with old code */
+ obd->obd_namespace = m->ofd_namespace;
+ ldlm_register_intent(m->ofd_namespace, ofd_intent_policy);
+ m->ofd_namespace->ns_lvbo = &ofd_lvbo;
+ m->ofd_namespace->ns_lvbp = m;
+
+ ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
+ "filter_ldlm_cb_client", &obd->obd_ldlm_client);
+
+ dt_conf_get(env, m->ofd_osd, &m->ofd_dt_conf);
+
+ /* Allow at most ddp_grant_reserved% of the available filesystem space
+ * to be granted to clients, so that any errors in the grant overhead
+ * calculations do not allow granting more space to clients than can be
+ * written. Assumes that in aggregate the grant overhead calculations do
+ * not have more than ddp_grant_reserved% estimation error in them. */
+ m->ofd_grant_ratio =
+ ofd_grant_ratio_conv(m->ofd_dt_conf.ddp_grant_reserved);
+
+ rc = tgt_init(env, &m->ofd_lut, obd, m->ofd_osd, ofd_common_slice,
+ OBD_FAIL_OST_ALL_REQUEST_NET,
+ OBD_FAIL_OST_ALL_REPLY_NET);
+ if (rc)
+ GOTO(err_free_ns, rc);
+
+ rc = ofd_fs_setup(env, m, obd);
+ if (rc)
+ GOTO(err_fini_lut, rc);
+
+ rc = ofd_start_inconsistency_verification_thread(m);
+ if (rc != 0)
+ GOTO(err_fini_fs, rc);
+
+ RETURN(0);
+
+err_fini_fs:
+ ofd_fs_cleanup(env, m);
+err_fini_lut:
+ tgt_fini(env, &m->ofd_lut);
+err_free_ns:
+ ldlm_namespace_free(m->ofd_namespace, 0, obd->obd_force);
+ obd->obd_namespace = m->ofd_namespace = NULL;
+err_fini_stack:
+ ofd_stack_fini(env, m, &m->ofd_osd->dd_lu_dev);
+err_fini_proc:
+ ofd_procfs_fini(m);
+ return rc;
+}
+
+/**
+ * Stop the OFD device
+ *
+ * This function stops the OFD device and all its subsystems.
+ * This is the end of OFD lifecycle.
+ *
+ * \param[in] env execution environment
+ * \param[in] m OFD device
+ */
+static void ofd_fini(const struct lu_env *env, struct ofd_device *m)
+{
+ struct obd_device *obd = ofd_obd(m);
+ struct lu_device *d = &m->ofd_dt_dev.dd_lu_dev;
+ struct lfsck_stop stop;
+
+ stop.ls_status = LS_PAUSED;
+ stop.ls_flags = 0;
+ lfsck_stop(env, m->ofd_osd, &stop);
+ target_recovery_fini(obd);
+ obd_exports_barrier(obd);
+ obd_zombie_barrier();
+
+ tgt_fini(env, &m->ofd_lut);
+ ofd_stop_inconsistency_verification_thread(m);
+ lfsck_degister(env, m->ofd_osd);
+ ofd_fs_cleanup(env, m);
+
+ ofd_free_capa_keys(m);
+ cleanup_capa_hash(obd->u.filter.fo_capa_hash);
+
+ if (m->ofd_namespace != NULL) {
+ ldlm_namespace_free(m->ofd_namespace, NULL,
+ d->ld_obd->obd_force);
+ d->ld_obd->obd_namespace = m->ofd_namespace = NULL;
+ }
+
+ ofd_stack_fini(env, m, &m->ofd_dt_dev.dd_lu_dev);
+ ofd_procfs_fini(m);
+ LASSERT(atomic_read(&d->ld_ref) == 0);
+ server_put_mount(obd->obd_name, true);
+ EXIT;
+}
+
+/**
+ * Implementation of lu_device_type_operations::ldto_device_fini.
+ *
+ * Finalize device. Dual to ofd_device_init(). It is called from
+ * obd_precleanup() and stops the current device.
+ *
+ * \param[in] env execution environment
+ * \param[in] d LU device of OFD
+ *
+ * \retval NULL
+ */
+static struct lu_device *ofd_device_fini(const struct lu_env *env,
+ struct lu_device *d)
+{
+ ENTRY;
+ ofd_fini(env, ofd_dev(d));
+ RETURN(NULL);
+}
+
+/**
+ * Implementation of lu_device_type_operations::ldto_device_free.
+ *
+ * Free OFD device. Dual to ofd_device_alloc().
+ *
+ * \param[in] env execution environment
+ * \param[in] d LU device of OFD
+ *
+ * \retval NULL
+ */
+static struct lu_device *ofd_device_free(const struct lu_env *env,
+ struct lu_device *d)
+{
+ struct ofd_device *m = ofd_dev(d);
+
+ dt_device_fini(&m->ofd_dt_dev);
+ OBD_FREE_PTR(m);
+ RETURN(NULL);
+}
+
+/**
+ * Implementation of lu_device_type_operations::ldto_device_alloc.
+ *
+ * This function allocates the new OFD device. It is called from
+ * obd_setup() if OBD device had lu_device_type defined.
+ *
+ * \param[in] env execution environment
+ * \param[in] t lu_device_type of OFD device
+ * \param[in] cfg configuration log
+ *
+ * \retval pointer to the lu_device of just allocated OFD
+ * \retval ERR_PTR of return value on error
+ */
+static struct lu_device *ofd_device_alloc(const struct lu_env *env,
+ struct lu_device_type *t,
+ struct lustre_cfg *cfg)
+{
+ struct ofd_device *m;
+ struct lu_device *l;
+ int rc;
+
+ OBD_ALLOC_PTR(m);
+ if (m == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ l = &m->ofd_dt_dev.dd_lu_dev;
+ dt_device_init(&m->ofd_dt_dev, t);
+ rc = ofd_init0(env, m, t, cfg);
+ if (rc != 0) {
+ ofd_device_free(env, l);
+ l = ERR_PTR(rc);
+ }
+
+ return l;
+}
+
+/* type constructor/destructor: ofd_type_init(), ofd_type_fini() */
LU_TYPE_INIT_FINI(ofd, &ofd_thread_key);
static struct lu_device_type_operations ofd_device_type_ops = {
.ldt_ctx_tags = LCT_DT_THREAD
};
-int __init ofd_init(void)
+/**
+ * Initialize OFD module.
+ *
+ * This function is called upon module loading. It registers OFD device type
+ * and prepares all in-memory structures used by all OFD devices.
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int __init ofd_init(void)
{
- struct lprocfs_static_vars lvars;
int rc;
rc = lu_kmem_init(ofd_caches);
if (rc)
return rc;
- lprocfs_ofd_init_vars(&lvars);
+ rc = ofd_fmd_init();
+ if (rc) {
+ lu_kmem_fini(ofd_caches);
+ return(rc);
+ }
- rc = class_register_type(&ofd_obd_ops, NULL, lvars.module_vars,
+ rc = class_register_type(&ofd_obd_ops, NULL, true, NULL,
LUSTRE_OST_NAME, &ofd_device_type);
return rc;
}
-void __exit ofd_exit(void)
+/**
+ * Stop OFD module.
+ *
+ * This function is called upon OFD module unloading.
+ * It frees all related structures and unregisters OFD device type.
+ */
+static void __exit ofd_exit(void)
{
- class_unregister_type(LUSTRE_OST_NAME);
+ ofd_fmd_exit();
lu_kmem_fini(ofd_caches);
+ class_unregister_type(LUSTRE_OST_NAME);
}
MODULE_AUTHOR("Whamcloud, Inc. <http://www.whamcloud.com/>");
git://git.whamcloud.com / fs / lustre-release.git / blobdiff