/*
* Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
- */
-/*
- * Copyright (c) 2011, 2012 Whamcloud, Inc.
- * Use is subject to license terms.
*
+ * Copyright (c) 2012, 2015, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Author: Johann Lombardi <johann@whamcloud.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_OSD
#include <lustre_ver.h>
#include <obd_class.h>
#include <lustre_disk.h>
#include <lustre_fid.h>
+#include <lustre_param.h>
+#include <md_object.h>
#include "osd_internal.h"
struct lu_context_key osd_key;
-static char *root_tag = "osd_mount, rootdb";
-
/* Slab for OSD object allocation */
-cfs_mem_cache_t *osd_object_kmem;
+struct kmem_cache *osd_object_kmem;
+
+/* Slab to allocate osd_zap_it */
+struct kmem_cache *osd_zapit_cachep;
static struct lu_kmem_descr osd_caches[] = {
{
.ckd_size = sizeof(struct osd_object)
},
{
+ .ckd_cache = &osd_zapit_cachep,
+ .ckd_name = "osd_zapit_cache",
+ .ckd_size = sizeof(struct osd_zap_it)
+ },
+ {
.ckd_cache = NULL
}
};
{
struct osd_thandle *oh = cb_data;
struct thandle *th = &oh->ot_super;
+ struct osd_device *osd = osd_dt_dev(th->th_dev);
struct lu_device *lud = &th->th_dev->dd_lu_dev;
struct dt_txn_commit_cb *dcb, *tmp;
dt_txn_hook_commit(th);
/* call per-transaction callbacks if any */
- cfs_list_for_each_entry_safe(dcb, tmp, &oh->ot_dcb_list, dcb_linkage)
+ list_for_each_entry_safe(dcb, tmp, &oh->ot_dcb_list, dcb_linkage)
dcb->dcb_func(NULL, th, dcb, error);
+ /* Unlike ldiskfs, zfs updates space accounting at commit time.
+ * As a consequence, op_end is called only now to inform the quota slave
+ * component that reserved quota space is now accounted in usage and
+ * should be released. Quota space won't be adjusted at this point since
+ * we can't provide a suitable environment. It will be performed
+ * asynchronously by a lquota thread. */
+ qsd_op_end(NULL, osd->od_quota_slave, &oh->ot_quota_trans);
+
lu_device_put(lud);
th->th_dev = NULL;
lu_context_exit(&th->th_ctx);
static int osd_trans_cb_add(struct thandle *th, struct dt_txn_commit_cb *dcb)
{
- struct osd_thandle *oh;
+ struct osd_thandle *oh = container_of0(th, struct osd_thandle,
+ ot_super);
- oh = container_of0(th, struct osd_thandle, ot_super);
- cfs_list_add(&dcb->dcb_linkage, &oh->ot_dcb_list);
+ LASSERT(dcb->dcb_magic == TRANS_COMMIT_CB_MAGIC);
+ LASSERT(&dcb->dcb_func != NULL);
+ if (dcb->dcb_flags & DCB_TRANS_STOP)
+ list_add(&dcb->dcb_linkage, &oh->ot_stop_dcb_list);
+ else
+ list_add(&dcb->dcb_linkage, &oh->ot_dcb_list);
return 0;
}
struct osd_device *osd = osd_dt_dev(d);
/* dmu will call commit callback with error code during abort */
if (!lu_device_is_md(&d->dd_lu_dev) && rc == -ENOSPC)
- CERROR("%s: failed to start transaction due to ENOSPC. "
- "Metadata overhead is underestimated or "
- "grant_ratio is too low.\n",
- osd->od_dt_dev.dd_lu_dev.ld_obd->obd_name);
+ CERROR("%s: failed to start transaction due to ENOSPC"
+ "\n", osd->od_svname);
else
CERROR("%s: can't assign tx: rc = %d\n",
- osd->od_dt_dev.dd_lu_dev.ld_obd->obd_name, rc);
+ osd->od_svname, rc);
} else {
/* add commit callback */
dmu_tx_callback_register(oh->ot_tx, osd_trans_commit_cb, oh);
RETURN(rc);
}
+static int osd_unlinked_object_free(struct osd_device *osd, uint64_t oid);
+
+static void osd_unlinked_list_emptify(struct osd_device *osd,
+ struct list_head *list, bool free)
+{
+ struct osd_object *obj;
+ uint64_t oid;
+
+ while (!list_empty(list)) {
+ obj = list_entry(list->next,
+ struct osd_object, oo_unlinked_linkage);
+ LASSERT(obj->oo_db != NULL);
+ oid = obj->oo_db->db_object;
+
+ list_del_init(&obj->oo_unlinked_linkage);
+ if (free)
+ (void)osd_unlinked_object_free(osd, oid);
+ }
+}
+
+static void osd_trans_stop_cb(struct osd_thandle *oth, int result)
+{
+ struct dt_txn_commit_cb *dcb;
+ struct dt_txn_commit_cb *tmp;
+
+ /* call per-transaction stop callbacks if any */
+ list_for_each_entry_safe(dcb, tmp, &oth->ot_stop_dcb_list,
+ dcb_linkage) {
+ LASSERTF(dcb->dcb_magic == TRANS_COMMIT_CB_MAGIC,
+ "commit callback entry: magic=%x name='%s'\n",
+ dcb->dcb_magic, dcb->dcb_name);
+ list_del_init(&dcb->dcb_linkage);
+ dcb->dcb_func(NULL, &oth->ot_super, dcb, result);
+ }
+}
+
/*
* Concurrency: shouldn't matter.
*/
-static int osd_trans_stop(const struct lu_env *env, struct thandle *th)
+static int osd_trans_stop(const struct lu_env *env, struct dt_device *dt,
+ struct thandle *th)
{
struct osd_device *osd = osd_dt_dev(th->th_dev);
+ bool sync = (th->th_sync != 0);
struct osd_thandle *oh;
+ struct list_head unlinked;
uint64_t txg;
int rc;
ENTRY;
oh = container_of0(th, struct osd_thandle, ot_super);
+ INIT_LIST_HEAD(&unlinked);
+ list_splice_init(&oh->ot_unlinked_list, &unlinked);
if (oh->ot_assigned == 0) {
LASSERT(oh->ot_tx);
dmu_tx_abort(oh->ot_tx);
osd_object_sa_dirty_rele(oh);
+ osd_unlinked_list_emptify(osd, &unlinked, false);
+ /* there won't be any commit, release reserved quota space now,
+ * if any */
+ qsd_op_end(env, osd->od_quota_slave, &oh->ot_quota_trans);
OBD_FREE_PTR(oh);
RETURN(0);
}
+ /* When doing our own inode accounting, the ZAPs storing per-uid/gid
+ * usage are updated at operation execution time, so we should call
+ * qsd_op_end() straight away. Otherwise (for blk accounting maintained
+ * by ZFS and when #inode is estimated from #blks) accounting is updated
+ * at commit time and the call to qsd_op_end() must be delayed */
+ if (oh->ot_quota_trans.lqt_id_cnt > 0 &&
+ !oh->ot_quota_trans.lqt_ids[0].lqi_is_blk &&
+ !osd->od_quota_iused_est)
+ qsd_op_end(env, osd->od_quota_slave, &oh->ot_quota_trans);
+
rc = dt_txn_hook_stop(env, th);
if (rc != 0)
CDEBUG(D_OTHER, "%s: transaction hook failed: rc = %d\n",
osd->od_svname, rc);
+ osd_trans_stop_cb(oh, rc);
+
LASSERT(oh->ot_tx);
txg = oh->ot_tx->tx_txg;
osd_object_sa_dirty_rele(oh);
+ /* XXX: Once dmu_tx_commit() called, oh/th could have been freed
+ * by osd_trans_commit_cb already. */
dmu_tx_commit(oh->ot_tx);
- if (th->th_sync)
- txg_wait_synced(dmu_objset_pool(osd->od_objset.os), txg);
+ osd_unlinked_list_emptify(osd, &unlinked, true);
+
+ if (sync)
+ txg_wait_synced(dmu_objset_pool(osd->od_os), txg);
RETURN(rc);
}
dmu_tx_t *tx;
ENTRY;
- tx = dmu_tx_create(osd->od_objset.os);
+ tx = dmu_tx_create(osd->od_os);
if (tx == NULL)
RETURN(ERR_PTR(-ENOMEM));
}
oh->ot_tx = tx;
- CFS_INIT_LIST_HEAD(&oh->ot_dcb_list);
- CFS_INIT_LIST_HEAD(&oh->ot_sa_list);
- cfs_sema_init(&oh->ot_sa_lock, 1);
+ INIT_LIST_HEAD(&oh->ot_dcb_list);
+ INIT_LIST_HEAD(&oh->ot_stop_dcb_list);
+ INIT_LIST_HEAD(&oh->ot_unlinked_list);
+ INIT_LIST_HEAD(&oh->ot_sa_list);
+ sema_init(&oh->ot_sa_lock, 1);
+ memset(&oh->ot_quota_trans, 0, sizeof(oh->ot_quota_trans));
th = &oh->ot_super;
th->th_dev = dt;
th->th_result = 0;
RETURN(th);
}
+/* Estimate the number of objects from a number of blocks */
+uint64_t osd_objs_count_estimate(uint64_t refdbytes, uint64_t usedobjs,
+ uint64_t nrblocks, uint64_t est_maxblockshift)
+{
+ uint64_t est_objs, est_refdblocks, est_usedobjs;
+
+ /* Compute an nrblocks estimate based on the actual number of
+ * dnodes that could fit in the space. Since we don't know the
+ * overhead associated with each dnode (xattrs, SAs, VDEV overhead,
+ * etc) just using DNODE_SHIFT isn't going to give a good estimate.
+ * Instead, compute an estimate based on the average space usage per
+ * dnode, with an upper and lower cap.
+ *
+ * In case there aren't many dnodes or blocks used yet, add a small
+ * correction factor using OSD_DNODE_EST_SHIFT. This correction
+ * factor gradually disappears as the number of real dnodes grows.
+ * This also avoids the need to check for divide-by-zero later.
+ */
+ CLASSERT(OSD_DNODE_MIN_BLKSHIFT > 0);
+ CLASSERT(OSD_DNODE_EST_BLKSHIFT > 0);
+
+ est_refdblocks = (refdbytes >> est_maxblockshift) +
+ (OSD_DNODE_EST_COUNT >> OSD_DNODE_EST_BLKSHIFT);
+ est_usedobjs = usedobjs + OSD_DNODE_EST_COUNT;
+
+ /* Average space/dnode more than maximum dnode size, use max dnode
+ * size to estimate free dnodes from adjusted free blocks count.
+ * OSTs typically use more than one block dnode so this case applies. */
+ if (est_usedobjs <= est_refdblocks * 2) {
+ est_objs = nrblocks;
+
+ /* Average space/dnode smaller than min dnode size (probably due to
+ * metadnode compression), use min dnode size to estimate the number of
+ * objects.
+ * An MDT typically uses below 512 bytes/dnode so this case applies. */
+ } else if (est_usedobjs >= (est_refdblocks << OSD_DNODE_MIN_BLKSHIFT)) {
+ est_objs = nrblocks << OSD_DNODE_MIN_BLKSHIFT;
+
+ /* Between the extremes, we try to use the average size of
+ * existing dnodes to compute the number of dnodes that fit
+ * into nrblocks:
+ *
+ * est_objs = nrblocks * (est_usedobjs / est_refblocks);
+ *
+ * but this may overflow 64 bits or become 0 if not handled well
+ *
+ * We know nrblocks is below (64 - 17 = 47) bits from
+ * SPA_MAXBLKSHIFT, and est_usedobjs is under 48 bits due to
+ * DN_MAX_OBJECT_SHIFT, which means that multiplying them may
+ * get as large as 2 ^ 95.
+ *
+ * We also know (est_usedobjs / est_refdblocks) is between 2 and
+ * 256, due to above checks, we can safely compute this first.
+ * We care more about accuracy on the MDT (many dnodes/block)
+ * which is good because this is where truncation errors are
+ * smallest. This adds 8 bits to nrblocks so we can use 7 bits
+ * to compute a fixed-point fraction and nrblocks can still fit
+ * in 64 bits. */
+ } else {
+ unsigned dnodes_per_block = (est_usedobjs << 7)/est_refdblocks;
+
+ est_objs = (nrblocks * dnodes_per_block) >> 7;
+ }
+ return est_objs;
+}
+
+static int osd_objset_statfs(struct osd_device *osd, struct obd_statfs *osfs)
+{
+ struct objset *os = osd->od_os;
+ uint64_t refdbytes, availbytes, usedobjs, availobjs;
+ uint64_t est_availobjs;
+ uint64_t reserved;
+ uint64_t bshift;
+
+ dmu_objset_space(os, &refdbytes, &availbytes, &usedobjs, &availobjs);
+
+ memset(osfs, 0, sizeof(*osfs));
+
+ /* We're a zfs filesystem. */
+ osfs->os_type = UBERBLOCK_MAGIC;
+
+ /*
+ * ZFS allows multiple block sizes. For statfs, Linux makes no
+ * proper distinction between bsize and frsize. For calculations
+ * of free and used blocks incorrectly uses bsize instead of frsize,
+ * but bsize is also used as the optimal blocksize. We return the
+ * largest possible block size as IO size for the optimum performance
+ * and scale the free and used blocks count appropriately.
+ */
+ osfs->os_bsize = osd->od_max_blksz;
+ bshift = fls64(osfs->os_bsize) - 1;
+
+ osfs->os_blocks = (refdbytes + availbytes) >> bshift;
+ osfs->os_bfree = availbytes >> bshift;
+ osfs->os_bavail = osfs->os_bfree; /* no extra root reservation */
+
+ /* Take replication (i.e. number of copies) into account */
+ osfs->os_bavail /= os->os_copies;
+
+ /*
+ * Reserve some space so we don't run into ENOSPC due to grants not
+ * accounting for metadata overhead in ZFS, and to avoid fragmentation.
+ * Rather than report this via os_bavail (which makes users unhappy if
+ * they can't fill the filesystem 100%), reduce os_blocks as well.
+ *
+ * Reserve 0.78% of total space, at least 16MB for small filesystems,
+ * for internal files to be created/unlinked when space is tight.
+ */
+ CLASSERT(OSD_STATFS_RESERVED_SIZE > 0);
+ reserved = OSD_STATFS_RESERVED_SIZE >> bshift;
+ if (likely(osfs->os_blocks >= reserved << OSD_STATFS_RESERVED_SHIFT))
+ reserved = osfs->os_blocks >> OSD_STATFS_RESERVED_SHIFT;
+
+ osfs->os_blocks -= reserved;
+ osfs->os_bfree -= min(reserved, osfs->os_bfree);
+ osfs->os_bavail -= min(reserved, osfs->os_bavail);
+
+ /*
+ * The availobjs value returned from dmu_objset_space() is largely
+ * useless, since it reports the number of objects that might
+ * theoretically still fit into the dataset, independent of minor
+ * issues like how much space is actually available in the pool.
+ * Compute a better estimate in udmu_objs_count_estimate().
+ */
+ est_availobjs = osd_objs_count_estimate(refdbytes, usedobjs,
+ osfs->os_bfree, bshift);
+
+ osfs->os_ffree = min(availobjs, est_availobjs);
+ osfs->os_files = osfs->os_ffree + usedobjs;
+
+ /* ZFS XXX: fill in backing dataset FSID/UUID
+ memcpy(osfs->os_fsid, .... );*/
+
+ osfs->os_namelen = MAXNAMELEN;
+ osfs->os_maxbytes = OBD_OBJECT_EOF;
+
+ if (!spa_writeable(dmu_objset_spa(os)) ||
+ osd->od_dev_set_rdonly || osd->od_prop_rdonly)
+ osfs->os_state |= OS_STATE_READONLY;
+
+ return 0;
+}
+
/*
* Concurrency: shouldn't matter.
*/
int osd_statfs(const struct lu_env *env, struct dt_device *d,
struct obd_statfs *osfs)
{
- struct osd_device *osd = osd_dt_dev(d);
int rc;
ENTRY;
- rc = udmu_objset_statfs(&osd->od_objset, osfs);
- if (rc)
+ rc = osd_objset_statfs(osd_dt_dev(d), osfs);
+ if (unlikely(rc != 0))
RETURN(rc);
- osfs->os_bavail -= min_t(obd_size,
+
+ osfs->os_bavail -= min_t(u64,
OSD_GRANT_FOR_LOCAL_OIDS / osfs->os_bsize,
osfs->os_bavail);
RETURN(0);
}
+static int osd_blk_insert_cost(struct osd_device *osd)
+{
+ int max_blockshift, nr_blkptrshift, bshift;
+
+ /* max_blockshift is the log2 of the number of blocks needed to reach
+ * the maximum filesize (that's to say 2^64) */
+ bshift = osd_spa_maxblockshift(dmu_objset_spa(osd->od_os));
+ max_blockshift = DN_MAX_OFFSET_SHIFT - bshift;
+
+ /* nr_blkptrshift is the log2 of the number of block pointers that can
+ * be stored in an indirect block */
+ CLASSERT(DN_MAX_INDBLKSHIFT > SPA_BLKPTRSHIFT);
+ nr_blkptrshift = DN_MAX_INDBLKSHIFT - SPA_BLKPTRSHIFT;
+
+ /* max_blockshift / nr_blkptrshift is thus the maximum depth of the
+ * tree. We add +1 for rounding purpose.
+ * The tree depth times the indirect block size gives us the maximum
+ * cost of inserting a block in the tree */
+ return (max_blockshift / nr_blkptrshift + 1) * (1<<DN_MAX_INDBLKSHIFT);
+}
+
/*
* Concurrency: doesn't access mutable data.
*/
const struct dt_device *dev,
struct dt_device_param *param)
{
+ struct osd_device *osd = osd_dt_dev(dev);
+
/*
* XXX should be taken from not-yet-existing fs abstraction layer.
*/
- param->ddp_max_name_len = MAXNAMELEN;
- param->ddp_max_nlink = 1 << 31; /* it's 8byte on a disk */
- param->ddp_block_shift = 12; /* XXX */
- param->ddp_mount_type = LDD_MT_ZFS;
+ param->ddp_max_name_len = MAXNAMELEN;
+ param->ddp_max_nlink = 1 << 31; /* it's 8byte on a disk */
+ param->ddp_symlink_max = PATH_MAX;
+ param->ddp_mount_type = LDD_MT_ZFS;
- param->ddp_mntopts = MNTOPT_USERXATTR | MNTOPT_ACL;
- param->ddp_max_ea_size = DXATTR_MAX_ENTRY_SIZE;
+ param->ddp_mntopts = MNTOPT_USERXATTR;
+ if (osd->od_posix_acl)
+ param->ddp_mntopts |= MNTOPT_ACL;
+ param->ddp_max_ea_size = DXATTR_MAX_ENTRY_SIZE;
/* for maxbytes, report same value as ZPL */
- param->ddp_maxbytes = MAX_LFS_FILESIZE;
-
- /* Default reserved fraction of the available space that should be kept
- * for error margin. Unfortunately, there are many factors that can
- * impact the overhead with zfs, so let's be very cautious for now and
- * reserve 20% of the available space which is not given out as grant.
- * This tunable can be changed on a live system via procfs if needed. */
- param->ddp_grant_reserved = 20;
+ param->ddp_maxbytes = MAX_LFS_FILESIZE;
/* inodes are dynamically allocated, so we report the per-inode space
* consumption to upper layers. This static value is not really accurate
* and we should use the same logic as in udmu_objset_statfs() to
* estimate the real size consumed by an object */
param->ddp_inodespace = OSD_DNODE_EST_COUNT;
- /* per-fragment overhead to be used by the client code */
- param->ddp_grant_frag = udmu_blk_insert_cost();
+ /* Although ZFS isn't an extent-based filesystem, the metadata overhead
+ * (i.e. 7 levels of indirect blocks, see osd_blk_insert_cost()) should
+ * not be accounted for every single new block insertion.
+ * Instead, the maximum extent size is set to the number of blocks that
+ * can fit into a single contiguous indirect block. There would be some
+ * cases where this crosses indirect blocks, but it also won't have 7
+ * new levels of indirect blocks in that case either, so it will still
+ * have enough reserved space for the extra indirect block */
+ param->ddp_max_extent_blks =
+ (1 << (DN_MAX_INDBLKSHIFT - SPA_BLKPTRSHIFT));
+ param->ddp_extent_tax = osd_blk_insert_cost(osd);
}
/*
static int osd_sync(const struct lu_env *env, struct dt_device *d)
{
struct osd_device *osd = osd_dt_dev(d);
- CDEBUG(D_HA, "syncing OSD %s\n", LUSTRE_OSD_ZFS_NAME);
- txg_wait_synced(dmu_objset_pool(osd->od_objset.os), 0ULL);
+ CDEBUG(D_CACHE, "syncing OSD %s\n", LUSTRE_OSD_ZFS_NAME);
+ txg_wait_synced(dmu_objset_pool(osd->od_os), 0ULL);
+ CDEBUG(D_CACHE, "synced OSD %s\n", LUSTRE_OSD_ZFS_NAME);
return 0;
}
static int osd_commit_async(const struct lu_env *env, struct dt_device *dev)
{
struct osd_device *osd = osd_dt_dev(dev);
- tx_state_t *tx = &dmu_objset_pool(osd->od_objset.os)->dp_tx;
+ tx_state_t *tx = &dmu_objset_pool(osd->od_os)->dp_tx;
uint64_t txg;
+ mutex_enter(&tx->tx_sync_lock);
txg = tx->tx_open_txg + 1;
if (tx->tx_quiesce_txg_waiting < txg) {
tx->tx_quiesce_txg_waiting = txg;
CERROR("%s: *** setting device %s read-only ***\n",
osd->od_svname, LUSTRE_OSD_ZFS_NAME);
- osd->od_rdonly = 1;
- spa_freeze(dmu_objset_spa(osd->od_objset.os));
-
- RETURN(0);
-}
-
-/*
- * Concurrency: serialization provided by callers.
- */
-static int osd_init_capa_ctxt(const struct lu_env *env, struct dt_device *d,
- int mode, unsigned long timeout, __u32 alg,
- struct lustre_capa_key *keys)
-{
- struct osd_device *dev = osd_dt_dev(d);
- ENTRY;
-
- dev->od_fl_capa = mode;
- dev->od_capa_timeout = timeout;
- dev->od_capa_alg = alg;
- dev->od_capa_keys = keys;
+ osd->od_dev_set_rdonly = 1;
+ spa_freeze(dmu_objset_spa(osd->od_os));
RETURN(0);
}
.dt_sync = osd_sync,
.dt_commit_async = osd_commit_async,
.dt_ro = osd_ro,
- .dt_init_capa_ctxt = osd_init_capa_ctxt,
};
/*
.lct_exit = osd_key_exit
};
+static void osd_fid_fini(const struct lu_env *env, struct osd_device *osd)
+{
+ if (osd->od_cl_seq == NULL)
+ return;
+
+ seq_client_fini(osd->od_cl_seq);
+ OBD_FREE_PTR(osd->od_cl_seq);
+ osd->od_cl_seq = NULL;
+}
+
static int osd_shutdown(const struct lu_env *env, struct osd_device *o)
{
ENTRY;
o->od_quota_slave = NULL;
}
+ osd_fid_fini(env, o);
+
RETURN(0);
}
+static void osd_xattr_changed_cb(void *arg, uint64_t newval)
+{
+ struct osd_device *osd = arg;
+
+ osd->od_xattr_in_sa = (newval == ZFS_XATTR_SA);
+}
+
+static void osd_recordsize_changed_cb(void *arg, uint64_t newval)
+{
+ struct osd_device *osd = arg;
+
+ LASSERT(newval <= osd_spa_maxblocksize(dmu_objset_spa(osd->od_os)));
+ LASSERT(newval >= SPA_MINBLOCKSIZE);
+ LASSERT(ISP2(newval));
+
+ osd->od_max_blksz = newval;
+}
+
+static void osd_readonly_changed_cb(void *arg, uint64_t newval)
+{
+ struct osd_device *osd = arg;
+
+ osd->od_prop_rdonly = !!newval;
+}
+
+/*
+ * This function unregisters all registered callbacks. It's harmless to
+ * unregister callbacks that were never registered so it is used to safely
+ * unwind a partially completed call to osd_objset_register_callbacks().
+ */
+static void osd_objset_unregister_callbacks(struct osd_device *o)
+{
+ struct dsl_dataset *ds = dmu_objset_ds(o->od_os);
+
+ (void) dsl_prop_unregister(ds, zfs_prop_to_name(ZFS_PROP_XATTR),
+ osd_xattr_changed_cb, o);
+ (void) dsl_prop_unregister(ds, zfs_prop_to_name(ZFS_PROP_RECORDSIZE),
+ osd_recordsize_changed_cb, o);
+ (void) dsl_prop_unregister(ds, zfs_prop_to_name(ZFS_PROP_READONLY),
+ osd_readonly_changed_cb, o);
+
+ if (o->arc_prune_cb != NULL) {
+ arc_remove_prune_callback(o->arc_prune_cb);
+ o->arc_prune_cb = NULL;
+ }
+}
+
+/*
+ * Register the required callbacks to be notified when zfs properties
+ * are modified using the 'zfs(8)' command line utility.
+ */
+static int osd_objset_register_callbacks(struct osd_device *o)
+{
+ struct dsl_dataset *ds = dmu_objset_ds(o->od_os);
+ dsl_pool_t *dp = dmu_objset_pool(o->od_os);
+ int rc;
+
+ LASSERT(ds);
+ LASSERT(dp);
+
+ dsl_pool_config_enter(dp, FTAG);
+ rc = -dsl_prop_register(ds, zfs_prop_to_name(ZFS_PROP_XATTR),
+ osd_xattr_changed_cb, o);
+ if (rc)
+ GOTO(err, rc);
+
+ rc = -dsl_prop_register(ds, zfs_prop_to_name(ZFS_PROP_RECORDSIZE),
+ osd_recordsize_changed_cb, o);
+ if (rc)
+ GOTO(err, rc);
+
+ rc = -dsl_prop_register(ds, zfs_prop_to_name(ZFS_PROP_READONLY),
+ osd_readonly_changed_cb, o);
+ if (rc)
+ GOTO(err, rc);
+
+ o->arc_prune_cb = arc_add_prune_callback(arc_prune_func, o);
+err:
+ dsl_pool_config_exit(dp, FTAG);
+ if (rc)
+ osd_objset_unregister_callbacks(o);
+
+ RETURN(rc);
+}
+
+static int osd_objset_open(struct osd_device *o)
+{
+ uint64_t version = ZPL_VERSION;
+ uint64_t sa_obj;
+ int rc;
+ ENTRY;
+
+ rc = -dmu_objset_own(o->od_mntdev, DMU_OST_ZFS, B_FALSE, o, &o->od_os);
+ if (rc) {
+ CERROR("%s: can't open %s\n", o->od_svname, o->od_mntdev);
+ o->od_os = NULL;
+ goto out;
+ }
+
+ /* Check ZFS version */
+ rc = -zap_lookup(o->od_os, MASTER_NODE_OBJ,
+ ZPL_VERSION_STR, 8, 1, &version);
+ if (rc) {
+ CERROR("%s: Error looking up ZPL VERSION\n", o->od_mntdev);
+ /*
+ * We can't return ENOENT because that would mean the objset
+ * didn't exist.
+ */
+ GOTO(out, rc = -EIO);
+ }
+
+ rc = -zap_lookup(o->od_os, MASTER_NODE_OBJ,
+ ZFS_SA_ATTRS, 8, 1, &sa_obj);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = -sa_setup(o->od_os, sa_obj, zfs_attr_table,
+ ZPL_END, &o->z_attr_table);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = -zap_lookup(o->od_os, MASTER_NODE_OBJ, ZFS_ROOT_OBJ,
+ 8, 1, &o->od_rootid);
+ if (rc) {
+ CERROR("%s: lookup for root failed: rc = %d\n",
+ o->od_svname, rc);
+ GOTO(out, rc);
+ }
+
+ rc = -zap_lookup(o->od_os, MASTER_NODE_OBJ, ZFS_UNLINKED_SET,
+ 8, 1, &o->od_unlinkedid);
+ if (rc) {
+ CERROR("%s: lookup for %s failed: rc = %d\n",
+ o->od_svname, ZFS_UNLINKED_SET, rc);
+ GOTO(out, rc);
+ }
+
+ /* Check that user/group usage tracking is supported */
+ if (!dmu_objset_userused_enabled(o->od_os) ||
+ DMU_USERUSED_DNODE(o->od_os)->dn_type != DMU_OT_USERGROUP_USED ||
+ DMU_GROUPUSED_DNODE(o->od_os)->dn_type != DMU_OT_USERGROUP_USED) {
+ CERROR("%s: Space accounting not supported by this target, "
+ "aborting\n", o->od_svname);
+ GOTO(out, -ENOTSUPP);
+ }
+
+out:
+ if (rc != 0 && o->od_os != NULL) {
+ dmu_objset_disown(o->od_os, o);
+ o->od_os = NULL;
+ }
+
+ RETURN(rc);
+}
+
+static int
+osd_unlinked_object_free(struct osd_device *osd, uint64_t oid)
+{
+ int rc;
+ dmu_tx_t *tx;
+
+ rc = -dmu_free_long_range(osd->od_os, oid, 0, DMU_OBJECT_END);
+ if (rc != 0) {
+ CWARN("%s: Cannot truncate "LPU64": rc = %d\n",
+ osd->od_svname, oid, rc);
+ return rc;
+ }
+
+ tx = dmu_tx_create(osd->od_os);
+ dmu_tx_hold_free(tx, oid, 0, DMU_OBJECT_END);
+ dmu_tx_hold_zap(tx, osd->od_unlinkedid, FALSE, NULL);
+ rc = -dmu_tx_assign(tx, TXG_WAIT);
+ if (rc != 0) {
+ CWARN("%s: Cannot assign tx for "LPU64": rc = %d\n",
+ osd->od_svname, oid, rc);
+ goto failed;
+ }
+
+ rc = -zap_remove_int(osd->od_os, osd->od_unlinkedid, oid, tx);
+ if (rc != 0) {
+ CWARN("%s: Cannot remove "LPU64" from unlinked set: rc = %d\n",
+ osd->od_svname, oid, rc);
+ goto failed;
+ }
+
+ rc = -dmu_object_free(osd->od_os, oid, tx);
+ if (rc != 0) {
+ CWARN("%s: Cannot free "LPU64": rc = %d\n",
+ osd->od_svname, oid, rc);
+ goto failed;
+ }
+ dmu_tx_commit(tx);
+
+ return 0;
+
+failed:
+ LASSERT(rc != 0);
+ dmu_tx_abort(tx);
+
+ return rc;
+}
+
+static void
+osd_unlinked_drain(const struct lu_env *env, struct osd_device *osd)
+{
+ zap_cursor_t zc;
+ zap_attribute_t *za = &osd_oti_get(env)->oti_za;
+
+ zap_cursor_init(&zc, osd->od_os, osd->od_unlinkedid);
+
+ while (zap_cursor_retrieve(&zc, za) == 0) {
+ /* If cannot free the object, leave it in the unlinked set,
+ * until the OSD is mounted again when obd_unlinked_drain()
+ * will be called. */
+ if (osd_unlinked_object_free(osd, za->za_first_integer) != 0)
+ break;
+ zap_cursor_advance(&zc);
+ }
+
+ zap_cursor_fini(&zc);
+}
+
static int osd_mount(const struct lu_env *env,
struct osd_device *o, struct lustre_cfg *cfg)
{
- char *dev = lustre_cfg_string(cfg, 0);
- struct lustre_mount_info *lmi;
- struct lustre_sb_info *lsi;
- dmu_buf_t *rootdb;
- int rc;
+ char *mntdev = lustre_cfg_string(cfg, 1);
+ char *svname = lustre_cfg_string(cfg, 4);
+ dmu_buf_t *rootdb;
+ const char *opts;
+ int rc;
ENTRY;
- if (o->od_objset.os != NULL)
+ if (o->od_os != NULL)
RETURN(0);
- lmi = server_get_mount(dev);
- if (lmi == NULL) {
- CERROR("Unknown mount point: '%s'\n", dev);
- RETURN(-ENODEV);
- }
+ if (mntdev == NULL || svname == NULL)
+ RETURN(-EINVAL);
- lsi = s2lsi(lmi->lmi_sb);
- dev = lsi->lsi_lmd->lmd_dev;
+ rc = strlcpy(o->od_mntdev, mntdev, sizeof(o->od_mntdev));
+ if (rc >= sizeof(o->od_mntdev))
+ RETURN(-E2BIG);
- if (strlen(dev) >= sizeof(o->od_mntdev))
+ rc = strlcpy(o->od_svname, svname, sizeof(o->od_svname));
+ if (rc >= sizeof(o->od_svname))
RETURN(-E2BIG);
- strcpy(o->od_mntdev, dev);
- strcpy(o->od_svname, lsi->lsi_svname);
+ if (server_name_is_ost(o->od_svname))
+ o->od_is_ost = 1;
- rc = -udmu_objset_open(o->od_mntdev, &o->od_objset);
- if (rc) {
- CERROR("can't open objset %s: %d\n", o->od_mntdev, rc);
+ rc = osd_objset_open(o);
+ if (rc)
RETURN(rc);
- }
- rc = __osd_obj2dbuf(env, o->od_objset.os, o->od_objset.root,
- &rootdb, root_tag);
- if (rc) {
- CERROR("udmu_obj2dbuf() failed with error %d\n", rc);
- udmu_objset_close(&o->od_objset);
- RETURN(rc);
- }
+ o->od_xattr_in_sa = B_TRUE;
+ o->od_max_blksz = SPA_OLD_MAXBLOCKSIZE;
+
+ rc = osd_objset_register_callbacks(o);
+ if (rc)
+ GOTO(err, rc);
+
+ rc = __osd_obj2dbuf(env, o->od_os, o->od_rootid, &rootdb);
+ if (rc)
+ GOTO(err, rc);
o->od_root = rootdb->db_object;
- sa_buf_rele(rootdb, root_tag);
+ sa_buf_rele(rootdb, osd_obj_tag);
/* 1. initialize oi before any file create or file open */
rc = osd_oi_init(env, o);
if (rc)
GOTO(err, rc);
+ rc = lu_site_init(&o->od_site, osd2lu_dev(o));
+ if (rc)
+ GOTO(err, rc);
+ o->od_site.ls_bottom_dev = osd2lu_dev(o);
+
+ rc = lu_site_init_finish(&o->od_site);
+ if (rc)
+ GOTO(err, rc);
+
/* Use our own ZAP for inode accounting by default, this can be changed
* via procfs to estimate the inode usage from the block usage */
o->od_quota_iused_est = 0;
if (rc)
GOTO(err, rc);
- o->arc_prune_cb = arc_add_prune_callback(arc_prune_func, o);
+ /* initialize quota slave instance */
+ o->od_quota_slave = qsd_init(env, o->od_svname, &o->od_dt_dev,
+ o->od_proc_entry);
+ if (IS_ERR(o->od_quota_slave)) {
+ rc = PTR_ERR(o->od_quota_slave);
+ o->od_quota_slave = NULL;
+ GOTO(err, rc);
+ }
+ /* parse mount option "noacl", and enable ACL by default */
+ opts = lustre_cfg_string(cfg, 3);
+ if (opts == NULL || strstr(opts, "noacl") == NULL)
+ o->od_posix_acl = 1;
+
+ osd_unlinked_drain(env, o);
err:
+ if (rc) {
+ if (o->od_os)
+ dmu_objset_disown(o->od_os, o);
+ o->od_os = NULL;
+ }
+
RETURN(rc);
}
{
ENTRY;
- if (cfs_atomic_read(&o->od_zerocopy_alloc))
+ if (atomic_read(&o->od_zerocopy_alloc))
CERROR("%s: lost %d allocated page(s)\n", o->od_svname,
- cfs_atomic_read(&o->od_zerocopy_alloc));
- if (cfs_atomic_read(&o->od_zerocopy_loan))
+ atomic_read(&o->od_zerocopy_alloc));
+ if (atomic_read(&o->od_zerocopy_loan))
CERROR("%s: lost %d loaned abuf(s)\n", o->od_svname,
- cfs_atomic_read(&o->od_zerocopy_loan));
- if (cfs_atomic_read(&o->od_zerocopy_pin))
+ atomic_read(&o->od_zerocopy_loan));
+ if (atomic_read(&o->od_zerocopy_pin))
CERROR("%s: lost %d pinned dbuf(s)\n", o->od_svname,
- cfs_atomic_read(&o->od_zerocopy_pin));
+ atomic_read(&o->od_zerocopy_pin));
- if (o->od_objset.os != NULL)
- udmu_objset_close(&o->od_objset);
+ if (o->od_os != NULL) {
+ /* force a txg sync to get all commit callbacks */
+ txg_wait_synced(dmu_objset_pool(o->od_os), 0ULL);
+
+ /* close the object set */
+ dmu_objset_disown(o->od_os, o);
+
+ o->od_os = NULL;
+ }
EXIT;
}
l->ld_ops = &osd_lu_ops;
o->od_dt_dev.dd_ops = &osd_dt_ops;
- o->od_capa_hash = init_capa_hash();
- if (o->od_capa_hash == NULL)
- GOTO(out, rc = -ENOMEM);
-
out:
RETURN(rc);
}
+static struct lu_device *osd_device_fini(const struct lu_env *env,
+ struct lu_device *dev);
+
static struct lu_device *osd_device_alloc(const struct lu_env *env,
- struct lu_device_type *t,
+ struct lu_device_type *type,
struct lustre_cfg *cfg)
{
- struct osd_device *o;
- int rc;
+ struct osd_device *dev;
+ struct osd_seq_list *osl;
+ int rc;
- OBD_ALLOC_PTR(o);
- if (o == NULL)
+ OBD_ALLOC_PTR(dev);
+ if (dev == NULL)
return ERR_PTR(-ENOMEM);
- rc = dt_device_init(&o->od_dt_dev, t);
+ osl = &dev->od_seq_list;
+ INIT_LIST_HEAD(&osl->osl_seq_list);
+ rwlock_init(&osl->osl_seq_list_lock);
+ sema_init(&osl->osl_seq_init_sem, 1);
+
+ rc = dt_device_init(&dev->od_dt_dev, type);
if (rc == 0) {
- rc = osd_device_init0(env, o, cfg);
+ rc = osd_device_init0(env, dev, cfg);
+ if (rc == 0) {
+ rc = osd_mount(env, dev, cfg);
+ if (rc)
+ osd_device_fini(env, osd2lu_dev(dev));
+ }
if (rc)
- dt_device_fini(&o->od_dt_dev);
+ dt_device_fini(&dev->od_dt_dev);
}
if (unlikely(rc != 0))
- OBD_FREE_PTR(o);
+ OBD_FREE_PTR(dev);
- return rc == 0 ? osd2lu_dev(o) : ERR_PTR(rc);
+ return rc == 0 ? osd2lu_dev(dev) : ERR_PTR(rc);
}
static struct lu_device *osd_device_free(const struct lu_env *env,
struct osd_device *o = osd_dev(d);
ENTRY;
- cleanup_capa_hash(o->od_capa_hash);
/* XXX: make osd top device in order to release reference */
- /*d->ld_site->ls_top_dev = d;
+ d->ld_site->ls_top_dev = d;
lu_site_purge(env, d->ld_site, -1);
- lu_site_fini(&o->od_site);*/
+ if (!cfs_hash_is_empty(d->ld_site->ls_obj_hash)) {
+ LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_ERROR, NULL);
+ lu_site_print(env, d->ld_site, &msgdata, lu_cdebug_printer);
+ }
+ lu_site_fini(&o->od_site);
dt_device_fini(&o->od_dt_dev);
OBD_FREE_PTR(o);
static struct lu_device *osd_device_fini(const struct lu_env *env,
struct lu_device *d)
{
- struct osd_device *o = osd_dev(d);
- struct lustre_mount_info *lmi;
- int rc;
+ struct osd_device *o = osd_dev(d);
+ int rc;
ENTRY;
+ osd_shutdown(env, o);
osd_oi_fini(env, o);
- if (o->od_objset.os) {
- arc_remove_prune_callback(o->arc_prune_cb);
- o->arc_prune_cb = NULL;
+ if (o->od_os) {
+ osd_objset_unregister_callbacks(o);
osd_sync(env, lu2dt_dev(d));
- txg_wait_callbacks(spa_get_dsl(dmu_objset_spa(o->od_objset.os)));
+ txg_wait_callbacks(spa_get_dsl(dmu_objset_spa(o->od_os)));
}
rc = osd_procfs_fini(o);
RETURN(ERR_PTR(rc));
}
- if (o->od_objset.os)
+ if (o->od_os)
osd_umount(env, o);
- lmi = server_get_mount_2(o->od_svname);
- LASSERT(lmi);
- server_put_mount(lmi->lmi_name, lmi->lmi_mnt);
-
RETURN(NULL);
}
struct lu_device *d, struct lustre_cfg *cfg)
{
struct osd_device *o = osd_dev(d);
- int err;
+ int rc;
ENTRY;
switch(cfg->lcfg_command) {
case LCFG_SETUP:
- err = osd_mount(env, o, cfg);
+ rc = osd_mount(env, o, cfg);
break;
case LCFG_CLEANUP:
- err = osd_shutdown(env, o);
+ rc = osd_shutdown(env, o);
+ break;
+ case LCFG_PARAM: {
+ LASSERT(&o->od_dt_dev);
+ rc = class_process_proc_param(PARAM_OSD, lprocfs_osd_obd_vars,
+ cfg, &o->od_dt_dev);
+ if (rc > 0 || rc == -ENOSYS)
+ rc = class_process_proc_param(PARAM_OST,
+ lprocfs_osd_obd_vars,
+ cfg, &o->od_dt_dev);
break;
+ }
default:
- err = -ENOTTY;
+ rc = -ENOTTY;
}
- RETURN(err);
+ RETURN(rc);
}
static int osd_recovery_complete(const struct lu_env *env, struct lu_device *d)
{
+ struct osd_device *osd = osd_dev(d);
+ int rc = 0;
ENTRY;
+
+ if (osd->od_quota_slave == NULL)
+ RETURN(0);
+
+ /* start qsd instance on recovery completion, this notifies the quota
+ * slave code that we are about to process new requests now */
+ rc = qsd_start(env, osd->od_quota_slave);
+ RETURN(rc);
+}
+
+/*
+ * we use exports to track all osd users
+ */
+static int osd_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 osd_device *osd = osd_dev(obd->obd_lu_dev);
+ struct lustre_handle conn;
+ int rc;
+ ENTRY;
+
+ CDEBUG(D_CONFIG, "connect #%d\n", osd->od_connects);
+
+ rc = class_connect(&conn, obd, cluuid);
+ if (rc)
+ RETURN(rc);
+
+ *exp = class_conn2export(&conn);
+
+ spin_lock(&obd->obd_dev_lock);
+ osd->od_connects++;
+ spin_unlock(&obd->obd_dev_lock);
+
RETURN(0);
}
+/*
+ * once last export (we don't count self-export) disappeared
+ * osd can be released
+ */
+static int osd_obd_disconnect(struct obd_export *exp)
+{
+ struct obd_device *obd = exp->exp_obd;
+ struct osd_device *osd = osd_dev(obd->obd_lu_dev);
+ int rc, release = 0;
+ ENTRY;
+
+ /* Only disconnect the underlying layers on the final disconnect. */
+ spin_lock(&obd->obd_dev_lock);
+ osd->od_connects--;
+ if (osd->od_connects == 0)
+ release = 1;
+ spin_unlock(&obd->obd_dev_lock);
+
+ rc = class_disconnect(exp); /* bz 9811 */
+
+ if (rc == 0 && release)
+ class_manual_cleanup(obd);
+ RETURN(rc);
+}
+
+static int osd_fid_init(const struct lu_env *env, struct osd_device *osd)
+{
+ struct seq_server_site *ss = osd_seq_site(osd);
+ int rc;
+ ENTRY;
+
+ if (osd->od_is_ost || osd->od_cl_seq != NULL)
+ RETURN(0);
+
+ if (unlikely(ss == NULL))
+ RETURN(-ENODEV);
+
+ OBD_ALLOC_PTR(osd->od_cl_seq);
+ if (osd->od_cl_seq == NULL)
+ RETURN(-ENOMEM);
+
+ rc = seq_client_init(osd->od_cl_seq, NULL, LUSTRE_SEQ_METADATA,
+ osd->od_svname, ss->ss_server_seq);
+
+ if (rc != 0) {
+ OBD_FREE_PTR(osd->od_cl_seq);
+ osd->od_cl_seq = NULL;
+ }
+
+ RETURN(rc);
+}
+
static int osd_prepare(const struct lu_env *env, struct lu_device *pdev,
struct lu_device *dev)
{
int rc = 0;
ENTRY;
- /* initialize quota slave instance */
- osd->od_quota_slave = qsd_init(env, osd->od_svname, &osd->od_dt_dev,
- osd->od_proc_entry);
- if (IS_ERR(osd->od_quota_slave)) {
- rc = PTR_ERR(osd->od_quota_slave);
- osd->od_quota_slave = NULL;
+ if (osd->od_quota_slave != NULL) {
+ /* set up quota slave objects */
+ rc = qsd_prepare(env, osd->od_quota_slave);
+ if (rc != 0)
+ RETURN(rc);
}
+ rc = osd_fid_init(env, osd);
+
RETURN(rc);
}
{
}
+int osd_fid_alloc(const struct lu_env *env, struct obd_export *exp,
+ struct lu_fid *fid, struct md_op_data *op_data)
+{
+ struct osd_device *osd = osd_dev(exp->exp_obd->obd_lu_dev);
+
+ return seq_client_alloc_fid(env, osd->od_cl_seq, fid);
+}
+
static struct lu_device_type_operations osd_device_type_ops = {
.ldto_init = osd_type_init,
.ldto_fini = osd_type_fini,
static struct obd_ops osd_obd_device_ops = {
.o_owner = THIS_MODULE,
+ .o_connect = osd_obd_connect,
+ .o_disconnect = osd_obd_disconnect,
+ .o_fid_alloc = osd_fid_alloc
};
-int __init osd_init(void)
+static int __init osd_init(void)
{
int rc;
if (rc)
return rc;
- rc = class_register_type(&osd_obd_device_ops, NULL,
- lprocfs_osd_module_vars,
+ rc = class_register_type(&osd_obd_device_ops, NULL, true, NULL,
LUSTRE_OSD_ZFS_NAME, &osd_device_type);
if (rc)
lu_kmem_fini(osd_caches);
return rc;
}
-void __exit osd_exit(void)
+static void __exit osd_exit(void)
{
class_unregister_type(LUSTRE_OSD_ZFS_NAME);
lu_kmem_fini(osd_caches);
}
extern unsigned int osd_oi_count;
-CFS_MODULE_PARM(osd_oi_count, "i", int, 0444,
- "Number of Object Index containers to be created, "
- "it's only valid for new filesystem.");
+module_param(osd_oi_count, int, 0444);
+MODULE_PARM_DESC(osd_oi_count, "Number of Object Index containers to be created, it's only valid for new filesystem.");
-MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
+MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
MODULE_DESCRIPTION("Lustre Object Storage Device ("LUSTRE_OSD_ZFS_NAME")");
+MODULE_VERSION(LUSTRE_VERSION_STRING);
MODULE_LICENSE("GPL");
-cfs_module(osd, LUSTRE_VERSION_STRING, osd_init, osd_exit);
+module_init(osd_init);
+module_exit(osd_exit);