*
* 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) 2012, 2013, Intel Corporation.
+ * Copyright (c) 2012, 2015, 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 <bzzz@whamcloud.com>
- * Author: Mike Pershin <tappro@whamcloud.com>
- * Author: Johann Lombardi <johann@whamcloud.com>
+ * 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 Documentation/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).
+ *
+ * - 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 <lustre/lustre_idl.h>
#include <lustre_dlm.h>
#include <lustre_quota.h>
+#include <lustre_nodemap.h>
#include "ofd_internal.h"
}
};
+/**
+ * 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)
{
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 *d;
struct ofd_thread_info *info = ofd_info(env);
struct lustre_mount_info *lmi;
+ struct lustre_mount_data *lmd;
int rc;
char *osdname;
RETURN(-ENODEV);
}
+ lmd = s2lsi(lmi->lmi_sb)->lsi_lmd;
+ if (lmd != NULL && lmd->lmd_flags & LMD_FLG_SKIP_LFSCK)
+ m->ofd_skip_lfsck = 1;
+
/* find bottom osd */
OBD_ALLOC(osdname, MTI_NAME_MAXLEN);
if (osdname == NULL)
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)
{
strcat(flags, "A");
lustre_cfg_bufs_set_string(&bufs, 1, flags);
lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
- if (!lcfg) {
- CERROR("Cannot alloc lcfg!\n");
+ if (lcfg == NULL)
RETURN_EXIT;
- }
LASSERT(top);
top->ld_ops->ldo_process_config(env, top, lcfg);
{ NULL }
};
-/* Some parameters were moved from ofd to osd and only their
+/**
+ * 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_filese
+ * -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" error
- * message confuses the customer. If they are matched in this
- * check, they will be passed to the osd directly.
+ *
+ * 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)
{
return false;
}
-/* used by MGS to process specific configurations */
+/**
+ * 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)
{
break;
}
- rc = class_process_proc_seq_param(PARAM_OST, obd->obd_vars, cfg,
+ rc = class_process_proc_param(PARAM_OST, obd->obd_vars, cfg,
d->ld_obd);
if (rc > 0 || rc == -ENOSYS) {
CDEBUG(D_CONFIG, "pass param %s down the stack.\n",
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)
}
}
-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)
{
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:
return 0;
}
+/**
+ * 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)
{
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_thread_info *oti = ofd_info(env);
struct ofd_device *ofd = ofd_dev(dev);
struct lu_device *next = &ofd->ofd_osd->dd_lu_dev;
- int rc = 0, max_precreate;
+ int rc = 0;
ENTRY;
- /* Grant space for object precreation on the self export.
- * This initial reserved space (i.e. 10MB for zfs and 280KB for ldiskfs)
+ /*
+ * Grant space for object precreation on the self export.
+ * The 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);
+ memset(&oti->fti_ocd, 0, sizeof(oti->fti_ocd));
+ oti->fti_ocd.ocd_grant = OST_MAX_PRECREATE / 2;
+ oti->fti_ocd.ocd_grant *= ofd->ofd_dt_conf.ddp_inodespace;
+ oti->fti_ocd.ocd_connect_flags = OBD_CONNECT_GRANT |
+ OBD_CONNECT_GRANT_PARAM;
+ ofd_grant_connect(env, dev->ld_obd->obd_self_export, &oti->fti_ocd,
+ true);
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,
LPROC_SEQ_FOPS(lprocfs_nid_stats_clear);
+/**
+ * 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)
{
struct obd_device *obd = ofd_obd(ofd);
- cfs_proc_dir_entry_t *entry;
+ struct proc_dir_entry *entry;
int rc = 0;
ENTRY;
/* 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_seq_obd_setup(obd);
+ rc = lprocfs_obd_setup(obd);
if (rc) {
CERROR("%s: lprocfs_obd_setup failed: %d.\n",
obd->obd_name, rc);
obd->obd_uses_nid_stats = 1;
- entry = lprocfs_seq_register("exports", obd->obd_proc_entry, NULL,
- NULL);
+ entry = lprocfs_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_proc_exports_entry = entry;
entry = lprocfs_add_simple(obd->obd_proc_exports_entry, "clear",
-#ifndef HAVE_ONLY_PROCFS_SEQ
- NULL, NULL,
-#endif
obd, &lprocfs_nid_stats_clear_fops);
if (IS_ERR(entry)) {
rc = PTR_ERR(entry);
}
/**
- * ofd_procfs_add_brw_stats_symlink - expose osd stats to ofd layer
+ * 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)
{
osd_obd->obd_type->typ_name, obd->obd_name);
}
+/**
+ * Cleanup all procfs entries in OFD.
+ *
+ * \param[in] ofd OFD device
+ */
static void ofd_procfs_fini(struct ofd_device *ofd)
{
struct obd_device *obd = ofd_obd(ofd);
lprocfs_job_stats_fini(obd);
}
-extern int ost_handle(struct ptlrpc_request *req);
-
+/**
+ * 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)
{
return seq_site_fini(env, &ofd->ofd_seq_site);
}
+/**
+ * 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;
ss->ss_lu = lu->ld_site;
ss->ss_node_id = ofd->ofd_lut.lut_lsd.lsd_osd_index;
+ OBD_ALLOC(name, sizeof(obd_name) * 2 + 10);
+ if (name == NULL)
+ return -ENOMEM;
+
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);
- }
+ GOTO(out_name, rc = -ENOMEM);
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);
+ GOTO(out_server, rc);
}
ss->ss_server_seq->lss_space.lsr_index = ss->ss_node_id;
OBD_ALLOC_PTR(ss->ss_client_seq);
if (ss->ss_client_seq == NULL)
- GOTO(out_free, rc = -ENOMEM);
+ GOTO(out_server, rc = -ENOMEM);
- snprintf(name, strlen(obd_name) + 6, "%p-super", obd_name);
+ /*
+ * It always printed as "%p", so that the name is unique in the kernel,
+ * even if the filesystem is mounted twice. So sizeof(.) * 2 is enough.
+ */
+ snprintf(name, sizeof(obd_name) * 2 + 7, "%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);
+ GOTO(out_client, 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;
- }
+out_client:
+ seq_client_fini(ss->ss_client_seq);
+ OBD_FREE_PTR(ss->ss_client_seq);
+ ss->ss_client_seq = NULL;
+out_server:
+ seq_server_fini(ss->ss_server_seq, env);
+ OBD_FREE_PTR(ss->ss_server_seq);
+ ss->ss_server_seq = NULL;
}
+out_name:
+ OBD_FREE(name, sizeof(obd_name) * 2 + 10);
return rc;
}
-int ofd_set_info_hdl(struct tgt_session_info *tsi)
+/**
+ * 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;
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 {
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 lu_fid *fid, struct fiemap *fiemap)
{
struct ofd_object *fo;
int rc;
}
struct locked_region {
- cfs_list_t list;
+ 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,
- cfs_list_t *locked)
+ struct list_head *locked)
{
struct locked_region *region = NULL;
__u64 flags = 0;
CDEBUG(D_OTHER, "ost lock [%llu,%llu], lh=%p\n", begin, end,
®ion->lh);
- cfs_list_add(®ion->list, locked);
+ 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,
- cfs_list_t *locked)
+ struct 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;
+ struct fiemap_extent *fiemap_start = fiemap->fm_extents;
ENTRY;
RETURN(rc);
}
-static void unlock_zero_regions(struct ldlm_namespace *ns, cfs_list_t *locked)
+/**
+ * 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;
- cfs_list_for_each_entry_safe(entry, temp, locked, list) {
+ 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);
- cfs_list_del(&entry->list);
+ list_del(&entry->list);
OBD_FREE_PTR(entry);
}
}
-int ofd_get_info_hdl(struct tgt_session_info *tsi)
+/**
+ * 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);
RCL_CLIENT);
if (KEY_IS(KEY_LAST_ID)) {
- obd_id *last_id;
+ u64 *last_id;
struct ofd_seq *oseq;
req_capsule_extend(tsi->tsi_pill, &RQF_OST_GET_INFO_LAST_ID);
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);
+ (u64)exp->exp_filter_data.fed_group);
if (IS_ERR(oseq))
rc = -EFAULT;
else
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 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);
+ rc = tgt_validate_obdo(tsi, &fm_key->lfik_oa);
if (rc)
RETURN(err_serious(rc));
- fid = &fm_key->oa.o_oi.oi_fid;
+ fid = &fm_key->lfik_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);
+ replylen = fiemap_count_to_size(
+ fm_key->lfik_fiemap.fm_extent_count);
req_capsule_set_size(tsi->tsi_pill, &RMF_FIEMAP_VAL,
RCL_SERVER, replylen);
if (fiemap == NULL)
RETURN(-ENOMEM);
- *fiemap = fm_key->fiemap;
+ *fiemap = fm_key->lfik_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) {
- cfs_list_t locked = CFS_LIST_HEAD_INIT(locked);
+ if (fm_key->lfik_oa.o_valid & OBD_MD_FLFLAGS &&
+ fm_key->lfik_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 && !cfs_list_empty(&locked)) {
+ if (rc == 0 && !list_empty(&locked)) {
rc = ofd_fiemap_get(tsi->tsi_env, ofd, fid,
fiemap);
unlock_zero_regions(ofd->ofd_namespace,
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 lustre_handle lh = { 0 };
struct ofd_object *fo;
__u64 flags = 0;
- ldlm_mode_t lock_mode = LCK_PR;
+ enum ldlm_mode lock_mode = LCK_PR;
bool srvlock;
int rc;
ENTRY;
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,
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);
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);
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 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;
+ u64 seq = ostid_seq(oi);
+ u64 end_id = ostid_id(oi);
+ u64 last;
+ u64 oid;
int skip_orphan;
int rc = 0;
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 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);
+ u64 seq = ostid_seq(&oa->o_oi);
+ u64 oid = ostid_id(&oa->o_oi);
struct ofd_seq *oseq;
int rc = 0, diff;
int sync_trans = 0;
+ long granted = 0;
ENTRY;
CDEBUG(D_HA, "ofd_last_id() = "LPU64" -> diff = %d\n",
ofd_seq_last_oid(oseq), diff);
if (-diff > OST_MAX_PRECREATE) {
- /* FIXME: should reset precreate_next_id on MDS */
+ /* 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,
} else {
if (unlikely(exp->exp_filter_data.fed_lastid_gen !=
ofd->ofd_lastid_gen)) {
- ofd_obd_disconnect(exp);
+ /* Keep the export ref so we can send the reply. */
+ ofd_obd_disconnect(class_export_get(exp));
GOTO(out_nolock, rc = -ENOTCONN);
}
ofd_name(ofd), POSTID(&oa->o_oi));
GOTO(out, rc = -EINVAL);
}
+
+ if (diff < 0) {
+ /* LU-5648 */
+ CERROR("%s: invalid precreate request for "
+ DOSTID", last_id " LPU64 ". "
+ "Likely MDS last_id corruption\n",
+ ofd_name(ofd), POSTID(&oa->o_oi),
+ ofd_seq_last_oid(oseq));
+ GOTO(out, rc = -EINVAL);
+ }
}
}
if (diff > 0) {
cfs_time_t enough_time = cfs_time_shift(DISK_TIMEOUT);
- obd_id next_id;
+ u64 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) {
+ granted = ofd_grant_create(tsi->tsi_env,
+ ofd_obd(ofd)->obd_self_export,
+ &diff);
+ if (granted < 0) {
+ rc = granted;
+ granted = 0;
CDEBUG(D_HA, "%s: failed to acquire grant "
"space for precreate (%d): rc = %d\n",
ofd_name(ofd), diff, rc);
* 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);
+ LCONSOLE_WARN("%s: Too many FIDs to precreate "
+ "OST replaced or reformatted: "
+ "LFSCK will clean up",
+ ofd_name(ofd));
+
+ CDEBUG(D_HA, "%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);
}
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);
+ !(oa->o_flags & OBD_FL_DELORPHAN)) {
+ ofd_grant_commit(ofd_obd(ofd)->obd_self_export, granted,
+ rc);
+ granted = 0;
+ }
ostid_set_id(&rep_oa->o_oi, ofd_seq_last_oid(oseq));
}
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 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;
+ u64 oid;
+ u32 count;
int rc = 0;
ENTRY;
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);
+ ldlm_request_cancel(tgt_ses_req(tsi), dlm, 0, LATF_SKIP);
}
*fid = body->oa.o_oi.oi_fid;
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;
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;
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;
ENTRY;
+ OBD_FAIL_TIMEOUT(OBD_FAIL_OST_PAUSE_PUNCH, cfs_fail_val);
+
/* check that we do support OBD_CONNECT_TRUNCLOCK. */
CLASSERT(OST_CONNECT_SUPPORTED & OBD_CONNECT_TRUNCLOCK);
return rc;
}
+static int ofd_ladvise_prefetch(const struct lu_env *env,
+ struct ofd_object *fo,
+ __u64 start, __u64 end)
+{
+ struct ofd_thread_info *info = ofd_info(env);
+ pgoff_t start_index, end_index, pages;
+ struct niobuf_remote rnb;
+ unsigned long nr_local;
+ struct niobuf_local *lnb;
+ int rc = 0;
+
+ if (end <= start)
+ RETURN(-EINVAL);
+
+ OBD_ALLOC_LARGE(lnb, sizeof(*lnb) * PTLRPC_MAX_BRW_PAGES);
+ if (lnb == NULL)
+ RETURN(-ENOMEM);
+
+ ofd_read_lock(env, fo);
+ if (!ofd_object_exists(fo))
+ GOTO(out_unlock, rc = -ENOENT);
+
+ rc = ofd_attr_get(env, fo, &info->fti_attr);
+ if (rc)
+ GOTO(out_unlock, rc);
+
+ if (end > info->fti_attr.la_size)
+ end = info->fti_attr.la_size;
+
+ if (end == 0)
+ GOTO(out_unlock, rc);
+
+ /* We need page aligned offset and length */
+ start_index = start >> PAGE_SHIFT;
+ end_index = (end - 1) >> PAGE_SHIFT;
+ pages = end_index - start_index + 1;
+ while (pages > 0) {
+ nr_local = pages <= PTLRPC_MAX_BRW_PAGES ? pages :
+ PTLRPC_MAX_BRW_PAGES;
+ rnb.rnb_offset = start_index << PAGE_SHIFT;
+ rnb.rnb_len = nr_local << PAGE_SHIFT;
+ rc = dt_bufs_get(env, ofd_object_child(fo), &rnb, lnb, 0);
+ if (unlikely(rc < 0))
+ break;
+ nr_local = rc;
+ rc = dt_read_prep(env, ofd_object_child(fo), lnb, nr_local);
+ dt_bufs_put(env, ofd_object_child(fo), lnb, nr_local);
+ if (unlikely(rc))
+ break;
+ start_index += nr_local;
+ pages -= nr_local;
+ }
+
+out_unlock:
+ ofd_read_unlock(env, fo);
+ OBD_FREE_LARGE(lnb, sizeof(*lnb) * PTLRPC_MAX_BRW_PAGES);
+ RETURN(rc);
+}
+
+/**
+ * OFD request handler for OST_LADVISE RPC.
+ *
+ * Tune cache or perfetch policies according to advices.
+ *
+ * \param[in] tsi target session environment for this request
+ *
+ * \retval 0 if successful
+ * \retval negative errno on error
+ */
+static int ofd_ladvise_hdl(struct tgt_session_info *tsi)
+{
+ struct ptlrpc_request *req = tgt_ses_req(tsi);
+ struct obd_export *exp = tsi->tsi_exp;
+ struct ofd_device *ofd = ofd_exp(exp);
+ struct ost_body *body, *repbody;
+ struct ofd_thread_info *info;
+ struct ofd_object *fo;
+ const struct lu_env *env = req->rq_svc_thread->t_env;
+ int rc = 0;
+ struct lu_ladvise *ladvise;
+ int num_advise;
+ struct ladvise_hdr *ladvise_hdr;
+ struct obd_ioobj ioo;
+ struct lustre_handle lockh = { 0 };
+ __u64 flags = 0;
+ int i;
+ struct dt_object *dob;
+ ENTRY;
+
+ CFS_FAIL_TIMEOUT(OBD_FAIL_OST_LADVISE_PAUSE, cfs_fail_val);
+ body = tsi->tsi_ost_body;
+
+ if ((body->oa.o_valid & OBD_MD_FLID) != OBD_MD_FLID)
+ RETURN(err_serious(-EPROTO));
+
+ ladvise_hdr = req_capsule_client_get(tsi->tsi_pill,
+ &RMF_OST_LADVISE_HDR);
+ if (ladvise_hdr == NULL)
+ RETURN(err_serious(-EPROTO));
+
+ if (ladvise_hdr->lah_magic != LADVISE_MAGIC ||
+ ladvise_hdr->lah_count < 1)
+ RETURN(err_serious(-EPROTO));
+
+ if ((ladvise_hdr->lah_flags & (~LF_MASK)) != 0)
+ RETURN(err_serious(-EPROTO));
+
+ ladvise = req_capsule_client_get(tsi->tsi_pill, &RMF_OST_LADVISE);
+ if (ladvise == NULL)
+ RETURN(err_serious(-EPROTO));
+
+ num_advise = req_capsule_get_size(&req->rq_pill,
+ &RMF_OST_LADVISE, RCL_CLIENT) /
+ sizeof(*ladvise);
+ if (num_advise < ladvise_hdr->lah_count)
+ RETURN(err_serious(-EPROTO));
+
+ repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
+ repbody->oa = body->oa;
+
+ info = ofd_info_init(env, exp);
+
+ rc = ostid_to_fid(&info->fti_fid, &body->oa.o_oi,
+ ofd->ofd_lut.lut_lsd.lsd_osd_index);
+ if (rc != 0)
+ RETURN(rc);
+
+ fo = ofd_object_find(env, ofd, &info->fti_fid);
+ if (IS_ERR(fo)) {
+ rc = PTR_ERR(fo);
+ RETURN(rc);
+ }
+ LASSERT(fo != NULL);
+ dob = ofd_object_child(fo);
+
+ for (i = 0; i < num_advise; i++, ladvise++) {
+ if (ladvise->lla_end <= ladvise->lla_start) {
+ rc = err_serious(-EPROTO);
+ break;
+ }
+
+ /* Handle different advice types */
+ switch (ladvise->lla_advice) {
+ default:
+ rc = -ENOTSUPP;
+ break;
+ case LU_LADVISE_WILLREAD:
+ ioo.ioo_oid = body->oa.o_oi;
+ ioo.ioo_bufcnt = 1;
+ rc = tgt_extent_lock(exp->exp_obd->obd_namespace,
+ &tsi->tsi_resid,
+ ladvise->lla_start,
+ ladvise->lla_end - 1,
+ &lockh, LCK_PR, &flags);
+ if (rc != 0)
+ break;
+
+ req->rq_status = ofd_ladvise_prefetch(env,
+ fo,
+ ladvise->lla_start,
+ ladvise->lla_end);
+ tgt_extent_unlock(&lockh, LCK_PR);
+ break;
+ case LU_LADVISE_DONTNEED:
+ rc = dt_ladvise(env, dob, ladvise->lla_start,
+ ladvise->lla_end, LU_LADVISE_DONTNEED);
+ break;
+ }
+ if (rc != 0)
+ break;
+ }
+
+ ofd_object_put(env, fo);
+ req->rq_status = rc;
+ 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;
- int rc;
+ struct obd_quotactl *oqctl, *repoqc;
+ struct lu_nodemap *nodemap;
+ int id;
+ int rc;
ENTRY;
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;
+
+ nodemap = nodemap_get_from_exp(tsi->tsi_exp);
+ if (IS_ERR(nodemap))
+ RETURN(PTR_ERR(nodemap));
+
+ 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);
+
+ nodemap_putref(nodemap);
+
+ 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);
}
-/* High priority request handlers for OFD */
-
-/* prolong locks for the current service time of the corresponding
- * portal (= OST_IO_PORTAL)
+/**
+ * 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)
{
if (AT_OFF)
return obd_timeout / 2;
- return max(at_est2timeout(at_get(&svcpt->scp_at_estimate)),
- ldlm_timeout);
+ return at_est2timeout(at_get(&svcpt->scp_at_estimate));
}
-static int ofd_prolong_one_lock(struct tgt_session_info *tsi,
- struct ldlm_lock *lock,
- struct ldlm_extent *extent, int timeout)
-{
-
- 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;
-}
-
-static int ofd_prolong_extent_locks(struct tgt_session_info *tsi,
- __u64 start, __u64 end)
+/**
+ * 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] data struct of data to prolong locks
+ *
+ */
+static void ofd_prolong_extent_locks(struct tgt_session_info *tsi,
+ struct ldlm_prolong_args *data)
{
- 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 timeout = prolong_timeout(tgt_ses_req(tsi));
- int lock_count = 0;
ENTRY;
+ data->lpa_timeout = prolong_timeout(tgt_ses_req(tsi));
+ data->lpa_export = tsi->tsi_exp;
+ data->lpa_resid = tsi->tsi_resid;
+
+ CDEBUG(D_RPCTRACE, "Prolong locks for req %p with x"LPU64
+ " ext("LPU64"->"LPU64")\n", tgt_ses_req(tsi),
+ tgt_ses_req(tsi)->rq_xid, data->lpa_extent.start,
+ data->lpa_extent.end);
+
if (oa->o_valid & OBD_MD_FLHANDLE) {
/* mostly a request should be covered by only one lock, try
* fast path. */
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)) {
+ if (ldlm_extent_contain(&lock->l_policy_data.l_extent,
+ &data->lpa_extent)) {
/* bingo */
- LASSERT(lock->l_export == exp);
- lock_count = ofd_prolong_one_lock(tsi, lock,
- &extent, timeout);
+ LASSERT(lock->l_export == data->lpa_export);
+ ldlm_lock_prolong_one(lock, data);
LDLM_LOCK_PUT(lock);
- RETURN(lock_count);
+ RETURN_EXIT;
}
+ lock->l_last_used = cfs_time_current();
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, timeout);
- }
- spin_unlock_bh(&exp->exp_bl_list_lock);
-
- RETURN(lock_count);
+ ldlm_resource_prolong(data);
+ EXIT;
}
/**
- * Returns 1 if the given PTLRPC matches the given LDLM lock, or 0 if it does
- * not.
+ * 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);
+ struct niobuf_remote *rnb;
+ struct obd_ioobj *ioo;
+ enum ldlm_mode mode;
+ struct ldlm_extent ext;
+ __u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
ENTRY;
rnb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
LASSERT(rnb != NULL);
- ext.start = rnb->offset;
+ ext.start = rnb->rnb_offset;
rnb += ioo->ioo_bufcnt - 1;
- ext.end = rnb->offset + rnb->len - 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);
- mode = LCK_PW;
+ /* a bulk write can only hold a reference on a PW extent lock
+ * or GROUP lock.
+ */
+ mode = LCK_PW | LCK_GROUP;
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))
}
/**
- * High-priority queue request check for whether the given PTLRPC request
- * (\a req) is blocking an LDLM lock cancel.
+ * 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. Also checks whether the request is covered by an LDLM
+ * lock.
*
- * Returns 1 if the given given PTLRPC request (\a req) is blocking an LDLM lock
- * cancel, 0 if it is not, and -EFAULT if the request is malformed.
+ * \param[in] req the incoming request
*
- * Only OST_READs, OST_WRITEs and OST_PUNCHes go on the h-p RPC queue. This
- * function looks only at OST_READs and OST_WRITEs.
+ * \retval 1 if \a req is blocking an LDLM lock cancel
+ * \retval 0 if it is not
+ * \retval -ESTALE if lock is not found
*/
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;
+ int opc;
+ struct ldlm_prolong_args pa = { 0 };
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);
/*
* Use LASSERT below because malformed RPCs should have
* been filtered out in tgt_hpreq_handler().
*/
+ opc = lustre_msg_get_opc(req->rq_reqmsg);
+ LASSERT(opc == OST_READ || opc == OST_WRITE);
+
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->flags & OBD_BRW_SRVLOCK));
+ LASSERT(!(rnb->rnb_flags & OBD_BRW_SRVLOCK));
- start = rnb->offset;
+ pa.lpa_mode = LCK_PW | LCK_GROUP;
+ if (opc == OST_READ)
+ pa.lpa_mode |= LCK_PR;
+
+ pa.lpa_extent.start = rnb->rnb_offset;
rnb += ioo->ioo_bufcnt - 1;
- end = rnb->offset + rnb->len - 1;
+ pa.lpa_extent.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);
+ " ("LPU64"->"LPU64")\n", tgt_name(tsi->tsi_tgt),
+ current->comm, PFID(&tsi->tsi_fid), pa.lpa_extent.start,
+ pa.lpa_extent.end);
- lock_count = ofd_prolong_extent_locks(tsi, start, end);
+ ofd_prolong_extent_locks(tsi, &pa);
CDEBUG(D_DLMTRACE, "%s: refreshed %u locks timeout for req %p.\n",
- tgt_name(tsi->tsi_tgt), lock_count, req);
+ tgt_name(tsi->tsi_tgt), pa.lpa_blocks_cnt, req);
+
+ if (pa.lpa_blocks_cnt > 0)
+ RETURN(1);
- RETURN(lock_count > 0);
+ RETURN(pa.lpa_locks_cnt > 0 ? 0 : -ESTALE);
}
+/**
+ * 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);
}
/**
- * Like tgt_rw_hpreq_lock_match(), but for OST_PUNCH RPCs.
+ * 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;
+ struct obdo *oa;
+ struct ldlm_extent ext;
+
+ 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);
+ /*
+ * 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(1);
- return 0;
+ oa = &tsi->tsi_ost_body->oa;
+ ext.start = oa->o_size;
+ ext.end = oa->o_blocks;
+
+ LASSERT(lock->l_resource != NULL);
+ if (!ostid_res_name_eq(&oa->o_oi, &lock->l_resource->lr_name))
+ RETURN(0);
+
+ if (!(lock->l_granted_mode & (LCK_PW | LCK_GROUP)))
+ RETURN(0);
+
+ RETURN(ldlm_extent_overlap(&lock->l_policy_data.l_extent, &ext));
}
/**
- * Like ost_rw_hpreq_check(), but for OST_PUNCH RPCs.
+ * 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. Also checks whether the request is
+ * covered by an LDLM lock.
+ *
+
+ *
+ * \param[in] req the incoming request
+ *
+ * \retval 1 if \a req is blocking an LDLM lock cancel
+ * \retval 0 if it is not
+ * \retval -ESTALE if lock is not found
*/
static int ofd_punch_hpreq_check(struct ptlrpc_request *req)
{
struct tgt_session_info *tsi;
struct obdo *oa;
- int lock_count;
+ struct ldlm_prolong_args pa = { 0 };
ENTRY;
LASSERT(!(oa->o_valid & OBD_MD_FLFLAGS &&
oa->o_flags & OBD_FL_SRVLOCK));
+ pa.lpa_mode = LCK_PW | LCK_GROUP;
+ pa.lpa_extent.start = oa->o_size;
+ pa.lpa_extent.end = oa->o_blocks;
+
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);
+ tsi->tsi_resid.name[1], pa.lpa_extent.start, pa.lpa_extent.end);
- lock_count = ofd_prolong_extent_locks(tsi, oa->o_size, oa->o_blocks);
+ ofd_prolong_extent_locks(tsi, &pa);
CDEBUG(D_DLMTRACE, "%s: refreshed %u locks timeout for req %p.\n",
- tgt_name(tsi->tsi_tgt), lock_count, req);
+ tgt_name(tsi->tsi_tgt), pa.lpa_blocks_cnt, req);
- RETURN(lock_count > 0);
+ if (pa.lpa_blocks_cnt > 0)
+ RETURN(1);
+
+ RETURN(pa.lpa_locks_cnt > 0 ? 0 : -ESTALE);
}
+/**
+ * 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);
}
-struct ptlrpc_hpreq_ops ofd_hpreq_rw = {
+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
};
-struct ptlrpc_hpreq_ops ofd_hpreq_punch = {
+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 the IO requests */
+/**
+ * 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;
LASSERT(rnb != NULL); /* must exist after request preprocessing */
/* no high priority if server lock is needed */
- if (rnb->flags & OBD_BRW_SRVLOCK)
+ if (rnb->rnb_flags & OBD_BRW_SRVLOCK ||
+ (lustre_msg_get_flags(tgt_ses_req(tsi)->rq_reqmsg)
+ & MSG_REPLAY))
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)
+ if ((tsi->tsi_ost_body->oa.o_valid & OBD_MD_FLFLAGS &&
+ tsi->tsi_ost_body->oa.o_flags & OBD_FL_SRVLOCK) ||
+ tgt_conn_flags(tsi) & OBD_CONNECT_MDS ||
+ lustre_msg_get_flags(tgt_ses_req(tsi)->rq_reqmsg) & MSG_REPLAY)
return;
tgt_ses_req(tsi)->rq_ops = &ofd_hpreq_punch;
}
#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,
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),
+TGT_OST_HDL(HABEO_CORPUS | HABEO_REFERO, OST_LADVISE, ofd_ladvise_hdl),
};
static struct tgt_opc_slice ofd_common_slice[] = {
.tos_hs = tgt_lfsck_handlers
},
{
+ .tos_opc_start = SEC_FIRST_OPC,
+ .tos_opc_end = SEC_LAST_OPC,
+ .tos_hs = tgt_sec_ctx_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_tags = LCT_DT_THREAD,
+ .lct_init = ofd_key_init,
+ .lct_fini = ofd_key_fini,
+ .lct_exit = ofd_key_exit
+};
+
+/**
+ * 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;
+ const char *dev = lustre_cfg_string(cfg, 0);
+ struct ofd_thread_info *info = NULL;
+ struct obd_device *obd;
+ struct obd_statfs *osfs;
+ struct lu_fid fid;
+ struct nm_config_file *nodemap_config;
+ int rc;
ENTRY;
spin_lock_init(&m->ofd_batch_lock);
init_rwsem(&m->ofd_lastid_rwsem);
- obd->u.filter.fo_fl_oss_capa = 0;
- CFS_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 */
info = ofd_info_init(env, NULL);
if (info == NULL)
- RETURN(-EFAULT);
+ GOTO(err_fini_proc, rc = -EFAULT);
rc = ofd_stack_init(env, m, cfg);
if (rc) {
}
m->ofd_blockbits = fls(osfs->os_bsize) - 1;
+ if (ONE_MB_BRW_SIZE < (1U << m->ofd_blockbits))
+ m->ofd_brw_size = 1U << m->ofd_blockbits;
+ else
+ m->ofd_brw_size = ONE_MB_BRW_SIZE;
+
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;
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_fini_lut, rc);
- rc = ofd_start_inconsistency_verification_thread(m);
+ fid.f_seq = FID_SEQ_LOCAL_NAME;
+ fid.f_oid = 1;
+ fid.f_ver = 0;
+ rc = local_oid_storage_init(env, m->ofd_osd, &fid,
+ &m->ofd_los);
if (rc != 0)
GOTO(err_fini_fs, rc);
+ nodemap_config = nm_config_file_register_tgt(env, m->ofd_osd,
+ m->ofd_los);
+ if (IS_ERR(nodemap_config))
+ GOTO(err_fini_los, rc = PTR_ERR(nodemap_config));
+
+ obd->u.obt.obt_nodemap_config_file = nodemap_config;
+
+ rc = ofd_start_inconsistency_verification_thread(m);
+ if (rc != 0)
+ GOTO(err_fini_nm, rc);
+
+ tgt_adapt_sptlrpc_conf(&m->ofd_lut, 1);
+
RETURN(0);
+err_fini_nm:
+ nm_config_file_deregister_tgt(env, obd->u.obt.obt_nodemap_config_file);
+ obd->u.obt.obt_nodemap_config_file = NULL;
+err_fini_los:
+ local_oid_storage_fini(env, m->ofd_los);
+ m->ofd_los = NULL;
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);
+ ldlm_namespace_free(m->ofd_namespace, NULL, obd->obd_force);
obd->obd_namespace = m->ofd_namespace = NULL;
err_fini_stack:
ofd_stack_fini(env, m, &m->ofd_osd->dd_lu_dev);
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);
stop.ls_flags = 0;
lfsck_stop(env, m->ofd_osd, &stop);
target_recovery_fini(obd);
+ if (m->ofd_namespace != NULL)
+ ldlm_namespace_free_prior(m->ofd_namespace, NULL,
+ d->ld_obd->obd_force);
+
obd_exports_barrier(obd);
obd_zombie_barrier();
ofd_stop_inconsistency_verification_thread(m);
lfsck_degister(env, m->ofd_osd);
ofd_fs_cleanup(env, m);
+ nm_config_file_deregister_tgt(env, obd->u.obt.obt_nodemap_config_file);
+ obd->u.obt.obt_nodemap_config_file = NULL;
- ofd_free_capa_keys(m);
- cleanup_capa_hash(obd->u.filter.fo_capa_hash);
+ if (m->ofd_los != NULL) {
+ local_oid_storage_fini(env, m->ofd_los);
+ m->ofd_los = NULL;
+ }
if (m->ofd_namespace != NULL) {
- ldlm_namespace_free(m->ofd_namespace, NULL,
- d->ld_obd->obd_force);
+ ldlm_namespace_free_post(m->ofd_namespace);
d->ld_obd->obd_namespace = m->ofd_namespace = NULL;
}
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)
{
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)
{
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)
return l;
}
-/* thread context key constructor/destructor */
-LU_KEY_INIT_FINI(ofd, struct 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_tags = LCT_DT_THREAD,
- .lct_init = ofd_key_init,
- .lct_fini = ofd_key_fini,
- .lct_exit = ofd_key_exit
-};
-
-/* type constructor/destructor: mdt_type_init, mdt_type_fini */
+/* 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)
{
int rc;
}
rc = class_register_type(&ofd_obd_ops, NULL, true, NULL,
-#ifndef HAVE_ONLY_PROCFS_SEQ
- NULL,
-#endif
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)
{
ofd_fmd_exit();
lu_kmem_fini(ofd_caches);
class_unregister_type(LUSTRE_OST_NAME);
}
-MODULE_AUTHOR("Whamcloud, Inc. <http://www.whamcloud.com/>");
+MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
MODULE_DESCRIPTION("Lustre Object Filtering Device");
+MODULE_VERSION(LUSTRE_VERSION_STRING);
MODULE_LICENSE("GPL");
module_init(ofd_init);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff