*
* 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/ofd/ofd_obd.c
*
- * Author: Andreas Dilger <adilger@whamcloud.com>
- * Author: Alex Zhuravlev <bzzz@whamcloud.com>
- * Author: Mike Pershin <tappro@whamcloud.com>
+ * This file contains OBD API methods for OBD Filter Device (OFD) which are
+ * used for export handling, configuration purposes and recovery.
+ * Several methods are used by ECHO client only since it still uses OBD API.
+ * Such methods have _echo_ prefix in name.
+ *
+ * Author: Andreas Dilger <andreas.dilger@intel.com>
+ * Author: Alexey Zhuravlev <alexey.zhuravlev@intel.com>
+ * Author: Mikhail Pershin <mike.pershin@intel.com>
*/
#define DEBUG_SUBSYSTEM S_FILTER
+#include <lustre/lustre_idl.h>
#include "ofd_internal.h"
+#include <obd_cksum.h>
+#include <lustre_ioctl.h>
+#include <lustre_quota.h>
+#include <lustre_lfsck.h>
+#include <lustre_nodemap.h>
+
+/**
+ * Initialize OFD per-export statistics.
+ *
+ * This function sets up procfs entries for various OFD export counters. These
+ * counters are for per-client statistics tracked on the server.
+ *
+ * \param[in] ofd OFD device
+ * \param[in] exp OBD export
+ * \param[in] client_nid NID of client
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_export_stats_init(struct ofd_device *ofd,
+ struct obd_export *exp,
+ lnet_nid_t *client_nid)
+{
+ struct obd_device *obd = ofd_obd(ofd);
+ struct nid_stat *stats;
+ int rc;
+ ENTRY;
+
+ LASSERT(obd->obd_uses_nid_stats);
+
+ if (obd_uuid_equals(&exp->exp_client_uuid, &obd->obd_uuid))
+ /* Self-export gets no proc entry */
+ RETURN(0);
+
+ rc = lprocfs_exp_setup(exp, client_nid);
+ if (rc != 0)
+ /* Mask error for already created /proc entries */
+ RETURN(rc == -EALREADY ? 0 : rc);
+
+ stats = exp->exp_nid_stats;
+ stats->nid_stats = lprocfs_alloc_stats(NUM_OBD_STATS +
+ LPROC_OFD_STATS_LAST,
+ LPROCFS_STATS_FLAG_NOPERCPU);
+ if (stats->nid_stats == NULL)
+ RETURN(-ENOMEM);
+
+ lprocfs_init_ops_stats(LPROC_OFD_STATS_LAST, stats->nid_stats);
+
+ ofd_stats_counter_init(stats->nid_stats);
+
+ rc = lprocfs_register_stats(stats->nid_proc, "stats", stats->nid_stats);
+ if (rc != 0) {
+ lprocfs_free_stats(&stats->nid_stats);
+ GOTO(out, rc);
+ }
+
+ rc = lprocfs_nid_ldlm_stats_init(stats);
+ if (rc != 0)
+ GOTO(out, rc);
+
+out:
+ RETURN(rc);
+}
+
+/**
+ * Match client and OST server connection feature flags.
+ *
+ * Compute the compatibility flags for a connection request based on
+ * features mutually supported by client and server.
+ *
+ * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
+ * must not be updated here, otherwise a partially initialized value may
+ * be exposed. After the connection request is successfully processed,
+ * the top-level tgt_connect() request handler atomically updates the export
+ * connect flags from the obd_connect_data::ocd_connect_flags field of the
+ * reply. \see tgt_connect().
+ *
+ * \param[in] env execution environment
+ * \param[in] exp the obd_export associated with this
+ * client/target pair
+ * \param[in] data stores data for this connect request
+ * \param[in] new_connection is this connection new or not
+ *
+ * \retval 0 if success
+ * \retval -EPROTO client and server feature requirements are
+ * incompatible
+ * \retval -EBADF OST index in connect request doesn't match
+ * real OST index
+ */
+static int ofd_parse_connect_data(const struct lu_env *env,
+ struct obd_export *exp,
+ struct obd_connect_data *data,
+ bool new_connection)
+{
+ struct ofd_device *ofd = ofd_exp(exp);
+ struct filter_export_data *fed = &exp->exp_filter_data;
+
+ if (!data)
+ RETURN(0);
+
+ CDEBUG(D_RPCTRACE, "%s: cli %s/%p ocd_connect_flags: "LPX64
+ " ocd_version: %x ocd_grant: %d ocd_index: %u"
+ " ocd_group %u\n",
+ exp->exp_obd->obd_name, exp->exp_client_uuid.uuid, exp,
+ data->ocd_connect_flags, data->ocd_version,
+ data->ocd_grant, data->ocd_index, data->ocd_group);
+
+ if (fed->fed_group != 0 && fed->fed_group != data->ocd_group) {
+ CWARN("!!! This export (nid %s) used object group %d "
+ "earlier; now it's trying to use group %d! This could "
+ "be a bug in the MDS. Please report to "
+ "https://jira.hpdd.intel.com/\n",
+ obd_export_nid2str(exp), fed->fed_group,
+ data->ocd_group);
+ RETURN(-EPROTO);
+ }
+ fed->fed_group = data->ocd_group;
+
+ data->ocd_connect_flags &= OST_CONNECT_SUPPORTED;
+ data->ocd_version = LUSTRE_VERSION_CODE;
+
+ /* Kindly make sure the SKIP_ORPHAN flag is from MDS. */
+ if (data->ocd_connect_flags & OBD_CONNECT_MDS)
+ CDEBUG(D_HA, "%s: Received MDS connection for group %u\n",
+ exp->exp_obd->obd_name, data->ocd_group);
+ else if (data->ocd_connect_flags & OBD_CONNECT_SKIP_ORPHAN)
+ RETURN(-EPROTO);
+
+ if (ofd_grant_param_supp(exp)) {
+ exp->exp_filter_data.fed_pagesize = data->ocd_blocksize;
+ /* ocd_{blocksize,inodespace} are log2 values */
+ data->ocd_blocksize = ofd->ofd_blockbits;
+ data->ocd_inodespace = ofd->ofd_dt_conf.ddp_inodespace;
+ /* ocd_grant_extent is in 1K blocks */
+ data->ocd_grant_extent = ofd->ofd_dt_conf.ddp_grant_frag >> 10;
+ }
+
+ if (data->ocd_connect_flags & OBD_CONNECT_GRANT)
+ data->ocd_grant = ofd_grant_connect(env, exp, data->ocd_grant,
+ new_connection);
+
+ if (data->ocd_connect_flags & OBD_CONNECT_INDEX) {
+ struct lr_server_data *lsd = &ofd->ofd_lut.lut_lsd;
+ int index = lsd->lsd_osd_index;
+
+ if (index != data->ocd_index) {
+ LCONSOLE_ERROR_MSG(0x136, "Connection from %s to index"
+ " %u doesn't match actual OST index"
+ " %u in last_rcvd file, bad "
+ "configuration?\n",
+ obd_export_nid2str(exp), index,
+ data->ocd_index);
+ RETURN(-EBADF);
+ }
+ if (!(lsd->lsd_feature_compat & OBD_COMPAT_OST)) {
+ /* this will only happen on the first connect */
+ lsd->lsd_feature_compat |= OBD_COMPAT_OST;
+ /* sync is not needed here as lut_client_add will
+ * set exp_need_sync flag */
+ tgt_server_data_update(env, &ofd->ofd_lut, 0);
+ }
+ }
+ if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_SIZE)) {
+ data->ocd_brw_size = 65536;
+ } else if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
+ data->ocd_brw_size = min(data->ocd_brw_size,
+ (__u32)DT_MAX_BRW_SIZE);
+ if (data->ocd_brw_size == 0) {
+ CERROR("%s: cli %s/%p ocd_connect_flags: "LPX64
+ " ocd_version: %x ocd_grant: %d ocd_index: %u "
+ "ocd_brw_size is unexpectedly zero, "
+ "network data corruption?"
+ "Refusing connection of this client\n",
+ exp->exp_obd->obd_name,
+ exp->exp_client_uuid.uuid,
+ exp, data->ocd_connect_flags, data->ocd_version,
+ data->ocd_grant, data->ocd_index);
+ RETURN(-EPROTO);
+ }
+ }
+
+ if (data->ocd_connect_flags & OBD_CONNECT_CKSUM) {
+ __u32 cksum_types = data->ocd_cksum_types;
+
+ /* The client set in ocd_cksum_types the checksum types it
+ * supports. We have to mask off the algorithms that we don't
+ * support */
+ data->ocd_cksum_types &= cksum_types_supported_server();
+
+ if (unlikely(data->ocd_cksum_types == 0)) {
+ CERROR("%s: Connect with checksum support but no "
+ "ocd_cksum_types is set\n",
+ exp->exp_obd->obd_name);
+ RETURN(-EPROTO);
+ }
+
+ CDEBUG(D_RPCTRACE, "%s: cli %s supports cksum type %x, return "
+ "%x\n", exp->exp_obd->obd_name, obd_export_nid2str(exp),
+ cksum_types, data->ocd_cksum_types);
+ } else {
+ /* This client does not support OBD_CONNECT_CKSUM
+ * fall back to CRC32 */
+ CDEBUG(D_RPCTRACE, "%s: cli %s does not support "
+ "OBD_CONNECT_CKSUM, CRC32 will be used\n",
+ exp->exp_obd->obd_name, obd_export_nid2str(exp));
+ }
+
+ if (data->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
+ data->ocd_maxbytes = ofd->ofd_dt_conf.ddp_maxbytes;
+
+ if (OCD_HAS_FLAG(data, PINGLESS)) {
+ if (ptlrpc_pinger_suppress_pings()) {
+ spin_lock(&exp->exp_obd->obd_dev_lock);
+ list_del_init(&exp->exp_obd_chain_timed);
+ spin_unlock(&exp->exp_obd->obd_dev_lock);
+ } else {
+ data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
+ }
+ }
+
+ RETURN(0);
+}
+
+/**
+ * Re-initialize export upon client reconnection.
+ *
+ * This function parses connection data from reconnect and resets
+ * export statistics.
+ *
+ * \param[in] env execution environment
+ * \param[in] exp OBD export
+ * \param[in] obd OFD device
+ * \param[in] cluuid NID of client
+ * \param[in] data connection data from request
+ * \param[in] localdata client NID
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_obd_reconnect(const struct lu_env *env, struct obd_export *exp,
+ struct obd_device *obd, struct obd_uuid *cluuid,
+ struct obd_connect_data *data,
+ void *client_nid)
+{
+ struct ofd_device *ofd;
+ int rc;
+
+ ENTRY;
+
+ if (exp == NULL || obd == NULL || cluuid == NULL)
+ RETURN(-EINVAL);
+
+ ofd = ofd_dev(obd->obd_lu_dev);
+
+ rc = ofd_parse_connect_data(env, exp, data, false);
+ if (rc == 0)
+ ofd_export_stats_init(ofd, exp, client_nid);
+
+ nodemap_add_member(*(lnet_nid_t *)client_nid, exp);
+
+ RETURN(rc);
+}
+
+/**
+ * Initialize new client connection.
+ *
+ * This function handles new connection to the OFD. The new export is
+ * created (in context of class_connect()) and persistent client data is
+ * initialized on storage.
+ *
+ * \param[in] env execution environment
+ * \param[out] _exp stores pointer to new export
+ * \param[in] obd OFD device
+ * \param[in] cluuid client UUID
+ * \param[in] data connection data from request
+ * \param[in] localdata client NID
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_obd_connect(const struct lu_env *env, struct obd_export **_exp,
+ struct obd_device *obd, struct obd_uuid *cluuid,
+ struct obd_connect_data *data, void *localdata)
+{
+ struct obd_export *exp;
+ struct ofd_device *ofd;
+ struct lustre_handle conn = { 0 };
+ int rc;
+ lnet_nid_t *client_nid;
+ ENTRY;
+
+ if (_exp == NULL || obd == NULL || cluuid == NULL)
+ RETURN(-EINVAL);
+
+ ofd = ofd_dev(obd->obd_lu_dev);
+
+ rc = class_connect(&conn, obd, cluuid);
+ if (rc)
+ RETURN(rc);
+
+ exp = class_conn2export(&conn);
+ LASSERT(exp != NULL);
+
+ rc = ofd_parse_connect_data(env, exp, data, true);
+ if (rc)
+ GOTO(out, rc);
+
+ if (localdata != NULL) {
+ client_nid = localdata;
+ nodemap_add_member(*client_nid, exp);
+ }
+
+ if (obd->obd_replayable) {
+ struct tg_export_data *ted = &exp->exp_target_data;
+
+ memcpy(ted->ted_lcd->lcd_uuid, cluuid,
+ sizeof(ted->ted_lcd->lcd_uuid));
+ rc = tgt_client_new(env, exp);
+ if (rc != 0)
+ GOTO(out, rc);
+ ofd_export_stats_init(ofd, exp, localdata);
+ }
+
+ CDEBUG(D_HA, "%s: get connection from MDS %d\n", obd->obd_name,
+ data ? data->ocd_group : -1);
+
+out:
+ if (rc != 0) {
+ nodemap_del_member(exp);
+ class_disconnect(exp);
+ *_exp = NULL;
+ } else {
+ *_exp = exp;
+ }
+ RETURN(rc);
+}
+
+/**
+ * Disconnect a connected client.
+ *
+ * This function terminates the client connection. The client export is
+ * disconnected (cleaned up) and client data on persistent storage is removed.
+ *
+ * \param[in] exp OBD export
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+int ofd_obd_disconnect(struct obd_export *exp)
+{
+ struct ofd_device *ofd = ofd_exp(exp);
+ struct lu_env env;
+ int rc;
+
+ ENTRY;
+
+ LASSERT(exp);
+ class_export_get(exp);
+
+ if (!(exp->exp_flags & OBD_OPT_FORCE))
+ ofd_grant_sanity_check(ofd_obd(ofd), __FUNCTION__);
+
+ nodemap_del_member(exp);
+ rc = server_disconnect_export(exp);
+
+ ofd_grant_discard(exp);
+
+ /* Do not erase record for recoverable client. */
+ if (exp->exp_obd->obd_replayable &&
+ (!exp->exp_obd->obd_fail || exp->exp_failed)) {
+ rc = lu_env_init(&env, LCT_DT_THREAD);
+ if (rc)
+ GOTO(out, rc);
+
+ tgt_client_del(&env, exp);
+ lu_env_fini(&env);
+ }
+out:
+ class_export_put(exp);
+ RETURN(rc);
+}
+
+/**
+ * Implementation of obd_ops::o_init_export.
+ *
+ * This function is called from class_new_export() and initializes
+ * the OFD-specific data for new export.
+ *
+ * \param[in] exp OBD export
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_init_export(struct obd_export *exp)
+{
+ int rc;
+
+ spin_lock_init(&exp->exp_filter_data.fed_lock);
+ INIT_LIST_HEAD(&exp->exp_filter_data.fed_mod_list);
+ atomic_set(&exp->exp_filter_data.fed_soft_sync_count, 0);
+ spin_lock(&exp->exp_lock);
+ exp->exp_connecting = 1;
+ spin_unlock(&exp->exp_lock);
+
+ /* self-export doesn't need client data and ldlm initialization */
+ if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
+ &exp->exp_client_uuid)))
+ return 0;
+
+ rc = tgt_client_alloc(exp);
+ if (rc == 0)
+ ldlm_init_export(exp);
+ if (rc)
+ CERROR("%s: Can't initialize export: rc %d\n",
+ exp->exp_obd->obd_name, rc);
+ return rc;
+}
+
+/**
+ * Implementation of obd_ops::o_destroy_export.
+ *
+ * This function is called from class_export_destroy() to cleanup
+ * the OFD-specific data for export being destroyed.
+ *
+ * \param[in] exp OBD export
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_destroy_export(struct obd_export *exp)
+{
+ struct ofd_device *ofd = ofd_exp(exp);
+
+ if (exp->exp_filter_data.fed_pending)
+ CERROR("%s: cli %s/%p has %lu pending on destroyed export"
+ "\n", exp->exp_obd->obd_name, exp->exp_client_uuid.uuid,
+ exp, exp->exp_filter_data.fed_pending);
+
+ target_destroy_export(exp);
+
+ if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
+ &exp->exp_client_uuid)))
+ return 0;
+
+ ldlm_destroy_export(exp);
+ tgt_client_free(exp);
+
+ ofd_fmd_cleanup(exp);
+
+ /*
+ * discard grants once we're sure no more
+ * interaction with the client is possible
+ */
+ ofd_grant_discard(exp);
+ ofd_fmd_cleanup(exp);
+
+ if (exp_connect_flags(exp) & OBD_CONNECT_GRANT_SHRINK) {
+ if (ofd->ofd_tot_granted_clients > 0)
+ ofd->ofd_tot_granted_clients --;
+ }
+
+ if (!(exp->exp_flags & OBD_OPT_FORCE))
+ ofd_grant_sanity_check(exp->exp_obd, __FUNCTION__);
+
+ LASSERT(list_empty(&exp->exp_filter_data.fed_mod_list));
+ return 0;
+}
+
+/**
+ * Notify all devices in server stack about recovery completion.
+ *
+ * This function calls ldo_recovery_complete() for all lower devices in the
+ * server stack so they will be prepared for normal operations.
+ *
+ * \param[in] env execution environment
+ * \param[in] ofd OFD device
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+int ofd_postrecov(const struct lu_env *env, struct ofd_device *ofd)
+{
+ struct lu_device *ldev = &ofd->ofd_dt_dev.dd_lu_dev;
+ struct lfsck_start_param lsp;
+ int rc;
+
+ CDEBUG(D_HA, "%s: recovery is over\n", ofd_name(ofd));
+
+ lsp.lsp_start = NULL;
+ lsp.lsp_index_valid = 0;
+ rc = lfsck_start(env, ofd->ofd_osd, &lsp);
+ if (rc != 0 && rc != -EALREADY)
+ CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
+ ofd_name(ofd), rc);
+
+ return ldev->ld_ops->ldo_recovery_complete(env, ldev);
+}
+
+/**
+ * Implementation of obd_ops::o_postrecov.
+ *
+ * This function is called from target_finish_recovery() upon recovery
+ * completion.
+ *
+ * \param[in] obd OBD device of OFD
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_obd_postrecov(struct obd_device *obd)
+{
+ struct lu_env env;
+ struct lu_device *ldev = obd->obd_lu_dev;
+ int rc;
+
+ ENTRY;
+
+ rc = lu_env_init(&env, LCT_DT_THREAD);
+ if (rc)
+ RETURN(rc);
+ ofd_info_init(&env, obd->obd_self_export);
+
+ rc = ofd_postrecov(&env, ofd_dev(ldev));
+
+ lu_env_fini(&env);
+ RETURN(rc);
+}
+
+/**
+ * Implementation of obd_ops::o_set_info_async.
+ *
+ * This function is not called from request handler, it is only used by
+ * class_notify_sptlrpc_conf() locally by direct obd_set_info_async() call.
+ * \see ofd_set_info_hdl() for request handler function.
+ *
+ * \param[in] env execution environment
+ * \param[in] exp OBD export of OFD device
+ * \param[in] keylen length of \a key
+ * \param[in] key key name
+ * \param[in] vallen length of \a val
+ * \param[in] val the \a key value
+ * \param[in] set not used in OFD
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_set_info_async(const struct lu_env *env, struct obd_export *exp,
+ __u32 keylen, void *key, __u32 vallen, void *val,
+ struct ptlrpc_request_set *set)
+{
+ int rc = 0;
+
+ ENTRY;
+
+ if (exp->exp_obd == NULL) {
+ CDEBUG(D_IOCTL, "invalid export %p\n", exp);
+ RETURN(-EINVAL);
+ }
+
+ if (KEY_IS(KEY_SPTLRPC_CONF)) {
+ rc = tgt_adapt_sptlrpc_conf(class_exp2tgt(exp), 0);
+ } else {
+ CERROR("%s: Unsupported key %s\n",
+ exp->exp_obd->obd_name, (char*)key);
+ rc = -EOPNOTSUPP;
+ }
+ RETURN(rc);
+}
+
+/**
+ * Implementation of obd_ops::o_get_info.
+ *
+ * This function is not called from request handler, it is only used by
+ * direct call from nrs_orr_range_fill_physical() in ptlrpc, see LU-3239.
+ *
+ * \see ofd_get_info_hdl() for request handler function.
+ *
+ * \param[in] env execution environment
+ * \param[in] exp OBD export of OFD device
+ * \param[in] keylen length of \a key
+ * \param[in] key key name
+ * \param[out] vallen length of key value
+ * \param[out] val the key value to return
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_get_info(const struct lu_env *env, struct obd_export *exp,
+ __u32 keylen, void *key, __u32 *vallen, void *val)
+{
+ struct ofd_thread_info *info;
+ struct ofd_device *ofd;
+ struct ll_fiemap_info_key *fm_key = key;
+ struct fiemap *fiemap = val;
+ int rc = 0;
+
+ ENTRY;
+
+ if (exp->exp_obd == NULL) {
+ CDEBUG(D_IOCTL, "invalid client export %p\n", exp);
+ RETURN(-EINVAL);
+ }
+
+ ofd = ofd_exp(exp);
+
+ if (KEY_IS(KEY_FIEMAP)) {
+ info = ofd_info_init(env, exp);
+
+ rc = ostid_to_fid(&info->fti_fid, &fm_key->lfik_oa.o_oi,
+ ofd->ofd_lut.lut_lsd.lsd_osd_index);
+ if (rc != 0)
+ RETURN(rc);
+
+ rc = ofd_fiemap_get(env, ofd, &info->fti_fid, fiemap);
+ } else {
+ CERROR("%s: not supported key %s\n", ofd_name(ofd), (char*)key);
+ rc = -EOPNOTSUPP;
+ }
+
+ RETURN(rc);
+}
+
+/**
+ * Get file system statistics of OST server.
+ *
+ * Helper function for ofd_statfs(), also used by grant code.
+ * Implements caching for statistics to avoid calling OSD device each time.
+ *
+ * \param[in] env execution environment
+ * \param[in] ofd OFD device
+ * \param[out] osfs statistic data to return
+ * \param[in] max_age maximum age for cached data
+ * \param[in] from_cache show that data was get from cache or not
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+int ofd_statfs_internal(const struct lu_env *env, struct ofd_device *ofd,
+ struct obd_statfs *osfs, __u64 max_age, int *from_cache)
+{
+ int rc = 0;
+ ENTRY;
+
+ spin_lock(&ofd->ofd_osfs_lock);
+ if (cfs_time_before_64(ofd->ofd_osfs_age, max_age) || max_age == 0) {
+ u64 unstable;
+
+ /* statfs data are too old, get up-to-date one.
+ * we must be cautious here since multiple threads might be
+ * willing to update statfs data concurrently and we must
+ * grant that cached statfs data are always consistent */
+
+ if (ofd->ofd_statfs_inflight == 0)
+ /* clear inflight counter if no users, although it would
+ * take a while to overflow this 64-bit counter ... */
+ ofd->ofd_osfs_inflight = 0;
+ /* notify ofd_grant_commit() that we want to track writes
+ * completed as of now */
+ ofd->ofd_statfs_inflight++;
+ /* record value of inflight counter before running statfs to
+ * compute the diff once statfs is completed */
+ unstable = ofd->ofd_osfs_inflight;
+ spin_unlock(&ofd->ofd_osfs_lock);
+
+ /* statfs can sleep ... hopefully not for too long since we can
+ * call it fairly often as space fills up */
+ rc = dt_statfs(env, ofd->ofd_osd, osfs);
+ if (unlikely(rc))
+ GOTO(out, rc);
+
+ spin_lock(&ofd->ofd_grant_lock);
+ spin_lock(&ofd->ofd_osfs_lock);
+ /* calculate how much space was written while we released the
+ * ofd_osfs_lock */
+ unstable = ofd->ofd_osfs_inflight - unstable;
+ ofd->ofd_osfs_unstable = 0;
+ if (unstable) {
+ /* some writes completed while we were running statfs
+ * w/o the ofd_osfs_lock. Those ones got added to
+ * the cached statfs data that we are about to crunch.
+ * Take them into account in the new statfs data */
+ osfs->os_bavail -= min_t(u64, osfs->os_bavail,
+ unstable >> ofd->ofd_blockbits);
+ /* However, we don't really know if those writes got
+ * accounted in the statfs call, so tell
+ * ofd_grant_space_left() there is some uncertainty
+ * on the accounting of those writes.
+ * The purpose is to prevent spurious error messages in
+ * ofd_grant_space_left() since those writes might be
+ * accounted twice. */
+ ofd->ofd_osfs_unstable += unstable;
+ }
+ /* similarly, there is some uncertainty on write requests
+ * between prepare & commit */
+ ofd->ofd_osfs_unstable += ofd->ofd_tot_pending;
+ spin_unlock(&ofd->ofd_grant_lock);
+
+ /* finally udpate cached statfs data */
+ ofd->ofd_osfs = *osfs;
+ ofd->ofd_osfs_age = cfs_time_current_64();
+
+ ofd->ofd_statfs_inflight--; /* stop tracking */
+ if (ofd->ofd_statfs_inflight == 0)
+ ofd->ofd_osfs_inflight = 0;
+ spin_unlock(&ofd->ofd_osfs_lock);
+
+ if (from_cache)
+ *from_cache = 0;
+ } else {
+ /* use cached statfs data */
+ *osfs = ofd->ofd_osfs;
+ spin_unlock(&ofd->ofd_osfs_lock);
+ if (from_cache)
+ *from_cache = 1;
+ }
+ GOTO(out, rc);
+
+out:
+ return rc;
+}
+
+/**
+ * Implementation of obd_ops::o_statfs.
+ *
+ * This function returns information about a storage file system.
+ * It is called from several places by using the OBD API as well as
+ * by direct call, e.g. from request handler.
+ *
+ * \see ofd_statfs_hdl() for request handler function.
+ *
+ * Report also the state of the OST to the caller in osfs->os_state
+ * (OS_STATE_READONLY, OS_STATE_DEGRADED).
+ *
+ * \param[in] env execution environment
+ * \param[in] exp OBD export of OFD device
+ * \param[out] osfs statistic data to return
+ * \param[in] max_age maximum age for cached data
+ * \param[in] flags not used in OFD
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+int ofd_statfs(const struct lu_env *env, struct obd_export *exp,
+ struct obd_statfs *osfs, __u64 max_age, __u32 flags)
+{
+ struct obd_device *obd = class_exp2obd(exp);
+ struct ofd_device *ofd = ofd_exp(exp);
+ int rc;
+
+ ENTRY;
+
+ rc = ofd_statfs_internal(env, ofd, osfs, max_age, NULL);
+ if (unlikely(rc))
+ GOTO(out, rc);
+
+ /* at least try to account for cached pages. its still racy and
+ * might be under-reporting if clients haven't announced their
+ * caches with brw recently */
+
+ CDEBUG(D_SUPER | D_CACHE, "blocks cached "LPU64" granted "LPU64
+ " pending "LPU64" free "LPU64" avail "LPU64"\n",
+ ofd->ofd_tot_dirty, ofd->ofd_tot_granted, ofd->ofd_tot_pending,
+ osfs->os_bfree << ofd->ofd_blockbits,
+ osfs->os_bavail << ofd->ofd_blockbits);
+
+ osfs->os_bavail -= min_t(u64, osfs->os_bavail,
+ ((ofd->ofd_tot_dirty + ofd->ofd_tot_pending +
+ osfs->os_bsize - 1) >> ofd->ofd_blockbits));
+
+ /* The QoS code on the MDS does not care about space reserved for
+ * precreate, so take it out. */
+ if (exp_connect_flags(exp) & OBD_CONNECT_MDS) {
+ struct filter_export_data *fed;
+
+ fed = &obd->obd_self_export->exp_filter_data;
+ osfs->os_bavail -= min_t(u64, osfs->os_bavail,
+ fed->fed_grant >> ofd->ofd_blockbits);
+ }
+
+ ofd_grant_sanity_check(obd, __FUNCTION__);
+ CDEBUG(D_CACHE, LPU64" blocks: "LPU64" free, "LPU64" avail; "
+ LPU64" objects: "LPU64" free; state %x\n",
+ osfs->os_blocks, osfs->os_bfree, osfs->os_bavail,
+ osfs->os_files, osfs->os_ffree, osfs->os_state);
+
+ if (OBD_FAIL_CHECK_VALUE(OBD_FAIL_OST_ENOINO,
+ ofd->ofd_lut.lut_lsd.lsd_osd_index))
+ osfs->os_ffree = 0;
+
+ /* OS_STATE_READONLY can be set by OSD already */
+ if (ofd->ofd_raid_degraded)
+ osfs->os_state |= OS_STATE_DEGRADED;
+
+ if (obd->obd_self_export != exp && ofd_grant_compat(exp, ofd)) {
+ /* clients which don't support OBD_CONNECT_GRANT_PARAM
+ * should not see a block size > page size, otherwise
+ * cl_lost_grant goes mad. Therefore, we emulate a 4KB (=2^12)
+ * block size which is the biggest block size known to work
+ * with all client's page size. */
+ osfs->os_blocks <<= ofd->ofd_blockbits - COMPAT_BSIZE_SHIFT;
+ osfs->os_bfree <<= ofd->ofd_blockbits - COMPAT_BSIZE_SHIFT;
+ osfs->os_bavail <<= ofd->ofd_blockbits - COMPAT_BSIZE_SHIFT;
+ osfs->os_bsize = 1 << COMPAT_BSIZE_SHIFT;
+ }
-static int ofd_obd_notify(struct obd_device *obd, struct obd_device *unused,
- enum obd_notify_event ev, void *data)
+ if (OBD_FAIL_CHECK_VALUE(OBD_FAIL_OST_ENOSPC,
+ ofd->ofd_lut.lut_lsd.lsd_osd_index))
+ osfs->os_bfree = osfs->os_bavail = 2;
+
+ EXIT;
+out:
+ return rc;
+}
+
+/**
+ * Implementation of obd_ops::o_setattr.
+ *
+ * This function is only used by ECHO client when it is run on top of OFD,
+ * \see ofd_setattr_hdl() for request handler function.
+
+ * \param[in] env execution environment
+ * \param[in] exp OBD export of OFD device
+ * \param[in] oa setattr parameters
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_echo_setattr(const struct lu_env *env, struct obd_export *exp,
+ struct obdo *oa)
{
- switch (ev) {
- case OBD_NOTIFY_CONFIG:
- LASSERT(obd->obd_no_conn);
- cfs_spin_lock(&obd->obd_dev_lock);
- obd->obd_no_conn = 0;
- cfs_spin_unlock(&obd->obd_dev_lock);
+ struct ofd_thread_info *info;
+ struct ofd_device *ofd = ofd_exp(exp);
+ struct ldlm_namespace *ns = ofd->ofd_namespace;
+ struct ldlm_resource *res;
+ struct ofd_object *fo;
+ struct lu_fid *fid = &oa->o_oi.oi_fid;
+ struct filter_fid *ff = NULL;
+ int rc = 0;
+
+ ENTRY;
+
+ info = ofd_info_init(env, exp);
+
+ ost_fid_build_resid(fid, &info->fti_resid);
+
+ /* This would be very bad - accidentally truncating a file when
+ * changing the time or similar - bug 12203. */
+ if (oa->o_valid & OBD_MD_FLSIZE) {
+ static char mdsinum[48];
+
+ if (oa->o_valid & OBD_MD_FLFID)
+ snprintf(mdsinum, sizeof(mdsinum) - 1,
+ "of parent "DFID, oa->o_parent_seq,
+ oa->o_parent_oid, 0);
+ else
+ mdsinum[0] = '\0';
+
+ CERROR("%s: setattr from %s trying to truncate object "DFID
+ " %s\n", ofd_name(ofd), obd_export_nid2str(exp),
+ PFID(fid), mdsinum);
+ GOTO(out, rc = -EPERM);
+ }
+
+ fo = ofd_object_find_exists(env, ofd, fid);
+ if (IS_ERR(fo)) {
+ CERROR("%s: can't find object "DFID"\n",
+ ofd_name(ofd), PFID(fid));
+ GOTO(out, rc = PTR_ERR(fo));
+ }
+
+ la_from_obdo(&info->fti_attr, oa, oa->o_valid);
+ info->fti_attr.la_valid &= ~LA_TYPE;
+
+ if (oa->o_valid & OBD_MD_FLFID) {
+ ff = &info->fti_mds_fid;
+ ofd_prepare_fidea(ff, oa);
+ }
+
+ /* setting objects attributes (including owner/group) */
+ rc = ofd_attr_set(env, fo, &info->fti_attr, ff);
+ if (rc)
+ GOTO(out_unlock, rc);
+
+ ofd_counter_incr(exp, LPROC_OFD_STATS_SETATTR, NULL, 1);
+ EXIT;
+out_unlock:
+ ofd_object_put(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(ns, NULL, &info->fti_resid, LDLM_EXTENT, 0);
+ if (!IS_ERR(res)) {
+ ldlm_res_lvbo_update(res, NULL, 0);
+ ldlm_resource_putref(res);
+ }
+ }
+
+ return rc;
+}
+
+/**
+ * Destroy OFD object by its FID.
+ *
+ * Supplemental function to destroy object by FID, it is used by request
+ * handler and by ofd_echo_destroy() below to find object by FID, lock it
+ * and call ofd_object_destroy() finally.
+ *
+ * \param[in] env execution environment
+ * \param[in] ofd OFD device
+ * \param[in] fid FID of object
+ * \param[in] orphan set if object being destroyed is an orphan
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+int ofd_destroy_by_fid(const struct lu_env *env, struct ofd_device *ofd,
+ const struct lu_fid *fid, int orphan)
+{
+ struct ofd_thread_info *info = ofd_info(env);
+ struct lustre_handle lockh;
+ __u64 flags = LDLM_FL_AST_DISCARD_DATA;
+ __u64 rc = 0;
+ ldlm_policy_data_t policy = {
+ .l_extent = { 0, OBD_OBJECT_EOF }
+ };
+ struct ofd_object *fo;
+
+ ENTRY;
+
+ fo = ofd_object_find_exists(env, ofd, fid);
+ if (IS_ERR(fo))
+ RETURN(PTR_ERR(fo));
+
+ /* Tell the clients that the object is gone now and that they should
+ * throw away any cached pages. */
+ ost_fid_build_resid(fid, &info->fti_resid);
+ rc = ldlm_cli_enqueue_local(ofd->ofd_namespace, &info->fti_resid,
+ LDLM_EXTENT, &policy, LCK_PW, &flags,
+ ldlm_blocking_ast, ldlm_completion_ast,
+ NULL, NULL, 0, LVB_T_NONE, NULL, &lockh);
+
+ /* We only care about the side-effects, just drop the lock. */
+ if (rc == ELDLM_OK)
+ ldlm_lock_decref(&lockh, LCK_PW);
+
+ LASSERT(fo != NULL);
+
+ rc = ofd_object_destroy(env, fo, orphan);
+ EXIT;
+
+ ofd_object_put(env, fo);
+ RETURN(rc);
+}
+
+/**
+ * Implementation of obd_ops::o_destroy.
+ *
+ * This function is only used by ECHO client when it is run on top of OFD,
+ * \see ofd_destroy_hdl() for request handler function.
+
+ * \param[in] env execution environment
+ * \param[in] exp OBD export of OFD device
+ * \param[in] oa obdo structure with FID
+ *
+ * Note: this is OBD API method which is common API for server OBDs and
+ * client OBDs. Thus some parameters used in client OBDs may not be used
+ * on server OBDs and vice versa.
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_echo_destroy(const struct lu_env *env, struct obd_export *exp,
+ struct obdo *oa)
+{
+ struct ofd_device *ofd = ofd_exp(exp);
+ struct lu_fid *fid = &oa->o_oi.oi_fid;
+ int rc = 0;
+
+ ENTRY;
+
+ ofd_info_init(env, exp);
+
+ CDEBUG(D_HA, "%s: Destroy object "DFID"\n", ofd_name(ofd), PFID(fid));
+
+ rc = ofd_destroy_by_fid(env, ofd, fid, 0);
+ if (rc == -ENOENT) {
+ CDEBUG(D_INODE, "%s: destroying non-existent object "DFID"\n",
+ ofd_name(ofd), PFID(fid));
+ GOTO(out, rc);
+ } else if (rc != 0) {
+ CERROR("%s: error destroying object "DFID": %d\n",
+ ofd_name(ofd), PFID(fid), rc);
+ GOTO(out, rc);
+ }
+ EXIT;
+out:
+ return rc;
+}
+
+/**
+ * Implementation of obd_ops::o_create.
+ *
+ * This function is only used by ECHO client when it is run on top of OFD
+ * and just creates an object.
+ * \see ofd_create_hdl() for request handler function.
+ *
+ * \param[in] env execution environment
+ * \param[in] exp OBD export of OFD device
+ * \param[in] oa obdo structure with FID sequence to use
+ *
+ * Note: this is OBD API method which is common API for server OBDs and
+ * client OBDs. Thus some parameters used in client OBDs may not be used
+ * on server OBDs and vice versa.
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_echo_create(const struct lu_env *env, struct obd_export *exp,
+ struct obdo *oa)
+{
+ struct ofd_device *ofd = ofd_exp(exp);
+ struct ofd_thread_info *info;
+ u64 seq = ostid_seq(&oa->o_oi);
+ struct ofd_seq *oseq;
+ int rc = 0, diff = 1;
+ u64 next_id;
+ int count;
+
+ ENTRY;
+
+ info = ofd_info_init(env, exp);
+
+ LASSERT(seq == FID_SEQ_ECHO);
+ LASSERT(oa->o_valid & OBD_MD_FLGROUP);
+
+ CDEBUG(D_INFO, "ofd_create("DOSTID")\n", POSTID(&oa->o_oi));
+
+ 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);
+
+ oseq = ofd_seq_load(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);
+ }
+
+ mutex_lock(&oseq->os_create_lock);
+ rc = ofd_grant_create(env, ofd_obd(ofd)->obd_self_export, &diff);
+ if (rc < 0) {
+ CDEBUG(D_HA, "%s: failed to acquire grant space for "
+ "precreate (%d): rc = %d\n", ofd_name(ofd), diff, rc);
+ diff = 0;
+ GOTO(out, rc);
+ }
+
+ next_id = ofd_seq_last_oid(oseq) + 1;
+ count = ofd_precreate_batch(ofd, diff);
+
+ rc = ofd_precreate_objects(env, ofd, next_id, oseq, count, 0);
+ if (rc < 0) {
+ CERROR("%s: unable to precreate: rc = %d\n",
+ ofd_name(ofd), rc);
+ } else {
+ ostid_set_id(&oa->o_oi, ofd_seq_last_oid(oseq));
+ oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP;
+ rc = 0;
+ }
+
+ ofd_grant_commit(env, ofd_obd(ofd)->obd_self_export, rc);
+out:
+ mutex_unlock(&oseq->os_create_lock);
+ ofd_seq_put(env, oseq);
+
+out_sem:
+ up_read(&ofd->ofd_lastid_rwsem);
+ RETURN(rc);
+}
+
+/**
+ * Implementation of obd_ops::o_getattr.
+ *
+ * This function is only used by ECHO client when it is run on top of OFD
+ * and returns attributes of object.
+ * \see ofd_getattr_hdl() for request handler function.
+ *
+ * \param[in] env execution environment
+ * \param[in] exp OBD export of OFD device
+ * \param[in,out] oa contains FID of object to get attributes from and
+ * is used to return attributes back
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_echo_getattr(const struct lu_env *env, struct obd_export *exp,
+ struct obdo *oa)
+{
+ struct ofd_device *ofd = ofd_exp(exp);
+ struct ofd_thread_info *info;
+ struct lu_fid *fid = &oa->o_oi.oi_fid;
+ struct ofd_object *fo;
+ int rc = 0;
+
+ ENTRY;
+
+ info = ofd_info_init(env, exp);
+
+ fo = ofd_object_find_exists(env, ofd, fid);
+ if (IS_ERR(fo))
+ GOTO(out, rc = PTR_ERR(fo));
+
+ LASSERT(fo != NULL);
+ rc = ofd_attr_get(env, fo, &info->fti_attr);
+ oa->o_valid = OBD_MD_FLID;
+ if (rc == 0) {
+ __u64 curr_version;
+
+ obdo_from_la(oa, &info->fti_attr,
+ OFD_VALID_FLAGS | LA_UID | LA_GID);
+
+ /* Store object version in reply */
+ curr_version = dt_version_get(env, ofd_object_child(fo));
+ if ((__s64)curr_version != -EOPNOTSUPP) {
+ oa->o_valid |= OBD_MD_FLDATAVERSION;
+ oa->o_data_version = curr_version;
+ }
+ }
+
+ ofd_object_put(env, fo);
+out:
+ RETURN(rc);
+}
+
+/**
+ * Get object version for OBD_IOC_GET_OBJ_VERSION ioctl.
+ *
+ * This is supplemental function for ofd_iocontrol() to return object
+ * version for lctl tool.
+ *
+ * \param[in] env execution environment
+ * \param[in] ofd OFD device
+ * \param[out] karg ioctl data
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_ioc_get_obj_version(const struct lu_env *env,
+ struct ofd_device *ofd, void *karg)
+{
+ struct obd_ioctl_data *data = karg;
+ struct lu_fid fid;
+ struct ofd_object *fo;
+ dt_obj_version_t version;
+ int rc = 0;
+
+ ENTRY;
+
+ if (data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
+ GOTO(out, rc = -EINVAL);
+
+ if (data->ioc_inlbuf1 != NULL && data->ioc_inllen1 == sizeof(fid)) {
+ fid = *(struct lu_fid *)data->ioc_inlbuf1;
+ } else if (data->ioc_inlbuf3 != NULL &&
+ data->ioc_inllen3 == sizeof(__u64) &&
+ data->ioc_inlbuf4 != NULL &&
+ data->ioc_inllen4 == sizeof(__u64)) {
+ struct ost_id ostid;
+
+ ostid_set_seq(&ostid, *(__u64 *)data->ioc_inlbuf4);
+ ostid_set_id(&ostid, *(__u64 *)data->ioc_inlbuf3);
+ rc = ostid_to_fid(&fid, &ostid,
+ ofd->ofd_lut.lut_lsd.lsd_osd_index);
+ if (rc != 0)
+ GOTO(out, rc);
+ } else {
+ GOTO(out, rc = -EINVAL);
+ }
+
+ if (!fid_is_sane(&fid))
+ GOTO(out, rc = -EINVAL);
+
+ fo = ofd_object_find(env, ofd, &fid);
+ if (IS_ERR(fo))
+ GOTO(out, rc = PTR_ERR(fo));
+
+ if (!ofd_object_exists(fo))
+ GOTO(out_fo, rc = -ENOENT);
+
+ if (lu_object_remote(&fo->ofo_obj.do_lu))
+ GOTO(out_fo, rc = -EREMOTE);
+
+ version = dt_version_get(env, ofd_object_child(fo));
+ if (version == 0)
+ GOTO(out_fo, rc = -EIO);
+
+ *(dt_obj_version_t *)data->ioc_inlbuf2 = version;
+
+ EXIT;
+out_fo:
+ ofd_object_put(env, fo);
+out:
+ return rc;
+}
+
+/**
+ * Implementation of obd_ops::o_iocontrol.
+ *
+ * This is OFD ioctl handling function which is primary interface for
+ * Lustre tools like lfs, lctl and lfsck.
+ *
+ * \param[in] cmd ioctl command
+ * \param[in] exp OBD export of OFD
+ * \param[in] len not used
+ * \param[in,out] karg buffer with data
+ * \param[in] uarg not used
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int ofd_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
+ void *karg, void *uarg)
+{
+ struct lu_env env;
+ struct ofd_device *ofd = ofd_exp(exp);
+ struct obd_device *obd = ofd_obd(ofd);
+ int rc;
+
+ ENTRY;
+
+ CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
+ rc = lu_env_init(&env, LCT_DT_THREAD);
+ if (rc)
+ RETURN(rc);
+
+ switch (cmd) {
+ case OBD_IOC_ABORT_RECOVERY:
+ CERROR("%s: aborting recovery\n", obd->obd_name);
+ obd->obd_force_abort_recovery = 1;
+ target_stop_recovery_thread(obd);
+ break;
+ case OBD_IOC_SYNC:
+ CDEBUG(D_RPCTRACE, "syncing ost %s\n", obd->obd_name);
+ rc = dt_sync(&env, ofd->ofd_osd);
+ break;
+ case OBD_IOC_SET_READONLY:
+ rc = dt_sync(&env, ofd->ofd_osd);
+ if (rc == 0)
+ rc = dt_ro(&env, ofd->ofd_osd);
+ break;
+ case OBD_IOC_START_LFSCK: {
+ struct obd_ioctl_data *data = karg;
+ struct lfsck_start_param lsp;
+
+ if (unlikely(data == NULL)) {
+ rc = -EINVAL;
+ break;
+ }
+
+ lsp.lsp_start = (struct lfsck_start *)(data->ioc_inlbuf1);
+ lsp.lsp_index_valid = 0;
+ rc = lfsck_start(&env, ofd->ofd_osd, &lsp);
+ break;
+ }
+ case OBD_IOC_STOP_LFSCK: {
+ struct obd_ioctl_data *data = karg;
+ struct lfsck_stop stop;
+
+ stop.ls_status = LS_STOPPED;
+ /* Old lfsck utils may pass NULL @stop. */
+ if (data->ioc_inlbuf1 == NULL)
+ stop.ls_flags = 0;
+ else
+ stop.ls_flags =
+ ((struct lfsck_stop *)(data->ioc_inlbuf1))->ls_flags;
+
+ rc = lfsck_stop(&env, ofd->ofd_osd, &stop);
+ break;
+ }
+ case OBD_IOC_GET_OBJ_VERSION:
+ rc = ofd_ioc_get_obj_version(&env, ofd, karg);
break;
default:
- CDEBUG(D_INFO, "%s: Unhandled notification %#x\n",
- obd->obd_name, ev);
+ CERROR("%s: not supported cmd = %#x\n", obd->obd_name, cmd);
+ rc = -ENOTTY;
+ }
+
+ lu_env_fini(&env);
+ RETURN(rc);
+}
+
+/**
+ * Implementation of obd_ops::o_precleanup.
+ *
+ * This function stops device activity before shutting it down. It is called
+ * from a cleanup function upon forceful device cleanup. For OFD there are no
+ * special actions, it just invokes target_recovery_cleanup().
+ *
+ * \param[in] obd OBD device of OFD
+ * \param[in] stage cleanup stage
+ *
+ * \retval 0
+ */
+static int ofd_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
+{
+ int rc = 0;
+
+ ENTRY;
+
+ switch(stage) {
+ case OBD_CLEANUP_EARLY:
+ break;
+ case OBD_CLEANUP_EXPORTS:
+ target_cleanup_recovery(obd);
+ break;
}
+ RETURN(rc);
+}
+
+/**
+ * Implementation of obd_ops::o_ping.
+ *
+ * This is OFD-specific part of OBD_PING request handling.
+ * It controls Filter Modification Data (FMD) expiration each time PING is
+ * received.
+ *
+ * \see ofd_fmd_expire() and ofd_fmd.c for details
+ *
+ * \param[in] env execution environment
+ * \param[in] exp OBD export of client
+ *
+ * \retval 0
+ */
+static int ofd_ping(const struct lu_env *env, struct obd_export *exp)
+{
+ ofd_fmd_expire(exp);
return 0;
}
+/**
+ * Implementation of obd_ops::o_health_check.
+ *
+ * This function checks the OFD device health - ability to respond on
+ * incoming requests. There are two health_check methods:
+ * - get statfs from the OSD. It checks just responsiveness of
+ * bottom device
+ * - do write attempt on bottom device to check it is fully operational and
+ * is not stuck. This is expensive method and requires special configuration
+ * option --enable-health-write while building Lustre, it is turned off
+ * by default.
+ *
+ * \param[in] nul not used
+ * \param[in] obd OBD device of OFD
+ *
+ * \retval 0 if successful
+ * \retval negative value in case of error
+ */
+static int ofd_health_check(const struct lu_env *nul, struct obd_device *obd)
+{
+ struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
+ struct ofd_thread_info *info;
+ struct lu_env env;
+#ifdef USE_HEALTH_CHECK_WRITE
+ struct thandle *th;
+#endif
+ int rc = 0;
+
+ /* obd_proc_read_health pass NULL env, we need real one */
+ rc = lu_env_init(&env, LCT_DT_THREAD);
+ if (rc)
+ RETURN(rc);
+
+ info = ofd_info_init(&env, NULL);
+ rc = dt_statfs(&env, ofd->ofd_osd, &info->fti_u.osfs);
+ if (unlikely(rc))
+ GOTO(out, rc);
+
+ if (info->fti_u.osfs.os_state == OS_STATE_READONLY)
+ GOTO(out, rc = -EROFS);
+
+#ifdef USE_HEALTH_CHECK_WRITE
+ OBD_ALLOC(info->fti_buf.lb_buf, PAGE_CACHE_SIZE);
+ if (info->fti_buf.lb_buf == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ info->fti_buf.lb_len = PAGE_CACHE_SIZE;
+ info->fti_off = 0;
+
+ th = dt_trans_create(&env, ofd->ofd_osd);
+ if (IS_ERR(th))
+ GOTO(out, rc = PTR_ERR(th));
+
+ rc = dt_declare_record_write(&env, ofd->ofd_health_check_file,
+ &info->fti_buf, info->fti_off, th);
+ if (rc == 0) {
+ th->th_sync = 1; /* sync IO is needed */
+ rc = dt_trans_start_local(&env, ofd->ofd_osd, th);
+ if (rc == 0)
+ rc = dt_record_write(&env, ofd->ofd_health_check_file,
+ &info->fti_buf, &info->fti_off,
+ th);
+ }
+ dt_trans_stop(&env, ofd->ofd_osd, th);
+
+ OBD_FREE(info->fti_buf.lb_buf, PAGE_CACHE_SIZE);
+
+ CDEBUG(D_INFO, "write 1 page synchronously for checking io rc %d\n",rc);
+#endif
+out:
+ lu_env_fini(&env);
+ return !!rc;
+}
+
struct obd_ops ofd_obd_ops = {
- .o_owner = THIS_MODULE,
- .o_notify = ofd_obd_notify,
+ .o_owner = THIS_MODULE,
+ .o_connect = ofd_obd_connect,
+ .o_reconnect = ofd_obd_reconnect,
+ .o_disconnect = ofd_obd_disconnect,
+ .o_create = ofd_echo_create,
+ .o_statfs = ofd_statfs,
+ .o_setattr = ofd_echo_setattr,
+ .o_preprw = ofd_preprw,
+ .o_commitrw = ofd_commitrw,
+ .o_destroy = ofd_echo_destroy,
+ .o_init_export = ofd_init_export,
+ .o_destroy_export = ofd_destroy_export,
+ .o_postrecov = ofd_obd_postrecov,
+ .o_getattr = ofd_echo_getattr,
+ .o_iocontrol = ofd_iocontrol,
+ .o_precleanup = ofd_precleanup,
+ .o_ping = ofd_ping,
+ .o_health_check = ofd_health_check,
+ .o_set_info_async = ofd_set_info_async,
+ .o_get_info = ofd_get_info,
};
git://git.whamcloud.com / fs / lustre-release.git / blobdiff