* GPL HEADER END
*/
/*
- * Copyright (c) 2012 Whamcloud, Inc.
+ * Copyright (c) 2012, Intel Corporation.
*/
/*
* lustre/osd-ldiskfs/osd_scrub.c
#define HALF_SEC (CFS_HZ >> 1)
+#define SCRUB_NEXT_BREAK 1 /* exit current loop and process next group */
+#define SCRUB_NEXT_CONTINUE 2 /* skip current object and process next bit */
+#define SCRUB_NEXT_EXIT 3 /* exit all the loops */
+#define SCRUB_NEXT_WAIT 4 /* wait for free cache slot */
+#define SCRUB_NEXT_CRASH 5 /* simulate system crash during OI scrub */
+#define SCRUB_NEXT_FATAL 6 /* simulate failure during OI scrub */
+#define SCRUB_NEXT_NOSCRUB 7 /* new created object, no scrub on it */
+#define SCRUB_NEXT_NOLMA 8 /* the inode has no FID-in-LMA */
+
+/* misc functions */
+
static inline struct osd_device *osd_scrub2dev(struct osd_scrub *scrub)
{
return container_of0(scrub, struct osd_device, od_scrub);
return osd_sb(osd_scrub2dev(scrub));
}
+static inline int osd_scrub_has_window(struct osd_scrub *scrub,
+ struct osd_otable_cache *ooc)
+{
+ return scrub->os_pos_current < ooc->ooc_pos_preload + SCRUB_WINDOW_SIZE;
+}
+
+static int osd_scrub_refresh_mapping(struct osd_thread_info *info,
+ struct osd_device *dev,
+ const struct lu_fid *fid,
+ const struct osd_inode_id *id, int ops)
+{
+ struct lu_fid *oi_fid = &info->oti_fid2;
+ struct osd_inode_id *oi_id = &info->oti_id2;
+ struct iam_container *bag;
+ struct iam_path_descr *ipd;
+ handle_t *jh;
+ int rc;
+ ENTRY;
+
+ fid_cpu_to_be(oi_fid, fid);
+ osd_id_pack(oi_id, id);
+ jh = ldiskfs_journal_start_sb(osd_sb(dev),
+ osd_dto_credits_noquota[ops]);
+ if (IS_ERR(jh)) {
+ rc = PTR_ERR(jh);
+ CERROR("%.16s: fail to start trans for scrub store: rc = %d\n",
+ LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name, rc);
+ RETURN(rc);
+ }
+
+ bag = &osd_fid2oi(dev, fid)->oi_dir.od_container;
+ ipd = osd_idx_ipd_get(info->oti_env, bag);
+ if (unlikely(ipd == NULL)) {
+ ldiskfs_journal_stop(jh);
+ CERROR("%.16s: fail to get ipd for scrub store\n",
+ LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name);
+ RETURN(-ENOMEM);
+ }
+
+ if (ops == DTO_INDEX_UPDATE) {
+ rc = iam_update(jh, bag, (const struct iam_key *)oi_fid,
+ (struct iam_rec *)oi_id, ipd);
+ } else {
+ rc = iam_insert(jh, bag, (const struct iam_key *)oi_fid,
+ (struct iam_rec *)oi_id, ipd);
+ if (rc == -EEXIST) {
+ rc = 1;
+ /* XXX: There are trouble things when adding OI
+ * mapping for IGIF object, which may cause
+ * multiple objects to be mapped to the same
+ * IGIF formatted FID. Consider the following
+ * situations:
+ *
+ * 1) The MDT is upgrading from 1.8 device.
+ * The OI scrub generates IGIF FID1 for the
+ * OBJ1 and adds the OI mapping.
+ *
+ * 2) For some reason, the OI scrub does not
+ * process all the IGIF objects completely.
+ *
+ * 3) The MDT is backuped and restored against
+ * this device.
+ *
+ * 4) When the MDT mounts up, the OI scrub will
+ * try to rebuild the OI files. For some IGIF
+ * object, OBJ2, which was not processed by the
+ * OI scrub before the backup/restore, and the
+ * new generated IGIF formatted FID may be just
+ * the FID1, the same as OBJ1.
+ *
+ * Under such case, the OI scrub cannot know how
+ * to generate new FID for the OBJ2.
+ *
+ * Currently, we do nothing for that. One possible
+ * solution is to generate new normal FID for the
+ * conflict object.
+ *
+ * Anyway, it is rare, only exists in theory. */
+ }
+ }
+ osd_ipd_put(info->oti_env, bag, ipd);
+ ldiskfs_journal_stop(jh);
+ RETURN(rc);
+}
+
+/* OI_scrub file ops */
+
static void osd_scrub_file_to_cpu(struct scrub_file *des,
struct scrub_file *src)
{
return rc;
}
+/* OI scrub APIs */
+
static int osd_scrub_prep(struct osd_device *dev)
{
struct osd_scrub *scrub = &dev->od_scrub;
if (flags & SS_RESET)
osd_scrub_file_reset(scrub,
- LDISKFS_SB(osd_sb(dev))->s_es->s_uuid, sf->sf_flags);
+ LDISKFS_SB(osd_sb(dev))->s_es->s_uuid, 0);
if (flags & SS_AUTO) {
scrub->os_full_speed = 1;
scrub->os_in_prior = 0;
scrub->os_waiting = 0;
+ scrub->os_paused = 0;
scrub->os_new_checked = 0;
if (sf->sf_pos_last_checkpoint != 0)
sf->sf_pos_latest_start = sf->sf_pos_last_checkpoint + 1;
else
- sf->sf_pos_latest_start = LDISKFS_FIRST_INO(osd_sb(dev));
+ sf->sf_pos_latest_start = LDISKFS_FIRST_INO(osd_sb(dev)) + 1;
scrub->os_pos_current = sf->sf_pos_latest_start;
sf->sf_status = SS_SCANNING;
}
static int
-osd_scrub_error(struct osd_device *dev, struct osd_inode_id *lid, int rc)
-{
- struct osd_scrub *scrub = &dev->od_scrub;
- struct scrub_file *sf = &scrub->os_file;
-
- down_write(&scrub->os_rwsem);
- scrub->os_new_checked++;
- sf->sf_items_failed++;
- if (sf->sf_pos_first_inconsistent == 0 ||
- sf->sf_pos_first_inconsistent > lid->oii_ino)
- sf->sf_pos_first_inconsistent = lid->oii_ino;
- up_write(&scrub->os_rwsem);
- return sf->sf_param & SP_FAILOUT ? rc : 0;
-}
-
-static int
osd_scrub_check_update(struct osd_thread_info *info, struct osd_device *dev,
- struct osd_idmap_cache *oic)
+ struct osd_idmap_cache *oic, int val)
{
struct osd_scrub *scrub = &dev->od_scrub;
struct scrub_file *sf = &scrub->os_file;
+ struct lu_fid *fid = &oic->oic_fid;
+ struct osd_inode_id *lid = &oic->oic_lid;
struct osd_inode_id *lid2 = &info->oti_id;
- struct lu_fid *oi_fid = &info->oti_fid;
- struct osd_inode_id *oi_id = &info->oti_id2;
- handle_t *jh = NULL;
struct osd_inconsistent_item *oii = NULL;
struct inode *inode = NULL;
- struct lu_fid *fid = &oic->oic_fid;
- struct osd_inode_id *lid = &oic->oic_lid;
- struct iam_container *bag;
- struct iam_path_descr *ipd;
int ops = DTO_INDEX_UPDATE;
int idx;
int rc;
ENTRY;
+ down_write(&scrub->os_rwsem);
+ scrub->os_new_checked++;
+ if (val < 0)
+ GOTO(out, rc = val);
+
if (scrub->os_in_prior)
oii = cfs_list_entry(oic, struct osd_inconsistent_item,
oii_cache);
- down_write(&scrub->os_rwsem);
- scrub->os_new_checked++;
if (lid->oii_ino < sf->sf_pos_latest_start && oii == NULL)
GOTO(out, rc = 0);
- if (oii != NULL && oii->oii_insert)
+ if (fid_is_igif(fid))
+ sf->sf_items_igif++;
+
+ if (val == SCRUB_NEXT_NOLMA && !dev->od_handle_nolma)
+ GOTO(out, rc = 0);
+
+ if ((oii != NULL && oii->oii_insert) || (val == SCRUB_NEXT_NOLMA))
goto iget;
- rc = osd_oi_lookup(info, dev, fid, lid2);
+ /* XXX: Currently, no FID-in-LMA for OST object, so osd_oi_lookup()
+ * wihtout checking FLD is enough.
+ *
+ * It should be updated if FID-in-LMA for OSD object introduced
+ * in the future. */
+ rc = osd_oi_lookup(info, dev, fid, lid2, false);
if (rc != 0) {
if (rc != -ENOENT)
GOTO(out, rc);
ops = DTO_INDEX_INSERT;
idx = osd_oi_fid2idx(dev, fid);
+ sf->sf_flags |= SF_RECREATED | SF_INCONSISTENT;
if (unlikely(!ldiskfs_test_bit(idx, sf->sf_oi_bitmap)))
ldiskfs_set_bit(idx, sf->sf_oi_bitmap);
- sf->sf_flags |= SF_RECREATED;
} else if (osd_id_eq(lid, lid2)) {
- GOTO(out, rc = 0);
- }
-
- sf->sf_flags |= SF_INCONSISTENT;
- fid_cpu_to_be(oi_fid, fid);
- osd_id_pack(oi_id, &oic->oic_lid);
- jh = ldiskfs_journal_start_sb(osd_sb(dev),
- osd_dto_credits_noquota[ops]);
- if (IS_ERR(jh)) {
- rc = PTR_ERR(jh);
- CERROR("%.16s: fail to start trans for scrub store, rc = %d\n",
- LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name, rc);
- GOTO(out, rc);
- }
-
- bag = &osd_fid2oi(dev, fid)->oi_dir.od_container;
- ipd = osd_idx_ipd_get(info->oti_env, bag);
- if (unlikely(ipd == NULL)) {
- ldiskfs_journal_stop(jh);
- CERROR("%.16s: fail to get ipd for scrub store\n",
- LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name);
- GOTO(out, rc = -ENOMEM);
- }
-
- if (ops == DTO_INDEX_UPDATE) {
- rc = iam_update(jh, bag, (const struct iam_key *)oi_fid,
- (struct iam_rec *)oi_id, ipd);
+ GOTO(out, rc = 0);
} else {
- rc = iam_insert(jh, bag, (const struct iam_key *)oi_fid,
- (struct iam_rec *)oi_id, ipd);
- if (rc == -EEXIST)
- rc = 1;
+ sf->sf_flags |= SF_INCONSISTENT;
}
- osd_ipd_put(info->oti_env, bag, ipd);
- ldiskfs_journal_stop(jh);
+
+ rc = osd_scrub_refresh_mapping(info, dev, fid, lid, ops);
if (rc == 0) {
if (scrub->os_in_prior)
sf->sf_items_updated_prior++;
RETURN(sf->sf_param & SP_FAILOUT ? rc : 0);
}
-static int do_osd_scrub_checkpoint(struct osd_scrub *scrub)
+static int osd_scrub_checkpoint(struct osd_scrub *scrub)
{
struct scrub_file *sf = &scrub->os_file;
int rc;
- ENTRY;
+
+ if (likely(cfs_time_before(cfs_time_current(),
+ scrub->os_time_next_checkpoint) ||
+ scrub->os_new_checked == 0))
+ return 0;
down_write(&scrub->os_rwsem);
sf->sf_items_checked += scrub->os_new_checked;
rc = osd_scrub_file_store(scrub);
up_write(&scrub->os_rwsem);
- RETURN(rc);
-}
-
-static inline int osd_scrub_checkpoint(struct osd_scrub *scrub)
-{
- if (unlikely(cfs_time_beforeq(scrub->os_time_next_checkpoint,
- cfs_time_current()) &&
- scrub->os_new_checked > 0))
- return do_osd_scrub_checkpoint(scrub);
- return 0;
+ return rc;
}
static void osd_scrub_post(struct osd_scrub *scrub, int result)
EXIT;
}
-#define SCRUB_NEXT_BREAK 1 /* exit current loop and process next group */
-#define SCRUB_NEXT_CONTINUE 2 /* skip current object and process next bit */
-#define SCRUB_NEXT_EXIT 3 /* exit all the loops */
-#define SCRUB_NEXT_WAIT 4 /* wait for free cache slot */
-#define SCRUB_NEXT_CRASH 5 /* simulate system crash during OI scrub */
-#define SCRUB_NEXT_FATAL 6 /* simulate failure during OI scrub */
-#define SCRUB_NEXT_NOSCRUB 7 /* new created object, no scrub on it */
-#define SCRUB_NEXT_IGIF 8 /* IGIF object */
+/* iteration engine */
struct osd_iit_param {
struct super_block *sb;
struct osd_idmap_cache *oic,
int *noslot, int rc);
-static inline int osd_scrub_has_window(struct osd_scrub *scrub,
- struct osd_otable_cache *ooc)
-{
- return scrub->os_pos_current < ooc->ooc_pos_preload + SCRUB_WINDOW_SIZE;
-}
-
static int osd_iit_next(struct osd_iit_param *param, __u32 *pos)
{
param->offset = ldiskfs_find_next_bit(param->bitmap->b_data,
static int osd_iit_iget(struct osd_thread_info *info, struct osd_device *dev,
struct lu_fid *fid, struct osd_inode_id *lid, __u32 pos,
- struct super_block *sb, struct inode **pinode)
+ struct super_block *sb, bool scrub)
{
- struct inode *inode;
- int rc;
+ struct lustre_mdt_attrs *lma = &info->oti_mdt_attrs;
+ struct inode *inode;
+ int rc;
osd_id_gen(lid, pos, OSD_OII_NOGEN);
- inode = osd_iget_fid(info, dev, lid, fid);
+ inode = osd_iget(info, dev, lid);
if (IS_ERR(inode)) {
rc = PTR_ERR(inode);
/* The inode may be removed after bitmap searching, or the
return rc;
}
- *pinode = inode;
- return 0;
+ /* If the inode has no OI mapping, then it is special locally used,
+ * should be invisible to OI scrub or up layer LFSCK. */
+ if (ldiskfs_test_inode_state(inode, LDISKFS_STATE_LUSTRE_NO_OI)) {
+ iput(inode);
+ return SCRUB_NEXT_CONTINUE;
+ }
+
+ if (scrub &&
+ ldiskfs_test_inode_state(inode, LDISKFS_STATE_LUSTRE_NOSCRUB)) {
+ /* Only skip it for the first OI scrub accessing. */
+ ldiskfs_clear_inode_state(inode, LDISKFS_STATE_LUSTRE_NOSCRUB);
+ iput(inode);
+ return SCRUB_NEXT_NOSCRUB;
+ }
+
+ rc = osd_get_lma(info, inode, &info->oti_obj_dentry, lma);
+ if (rc == 0) {
+ if (!scrub) {
+ if (!fid_is_client_visible(&lma->lma_self_fid))
+ rc = SCRUB_NEXT_CONTINUE;
+ else
+ *fid = lma->lma_self_fid;
+ }
+ } else if (rc == -ENODATA) {
+ lu_igif_build(fid, inode->i_ino, inode->i_generation);
+ if (scrub)
+ rc = SCRUB_NEXT_NOLMA;
+ else
+ rc = 0;
+ }
+ iput(inode);
+ return rc;
}
static int osd_scrub_next(struct osd_thread_info *info, struct osd_device *dev,
struct ptlrpc_thread *thread = &scrub->os_thread;
struct lu_fid *fid;
struct osd_inode_id *lid;
- struct inode *inode;
int rc;
if (OBD_FAIL_CHECK(OBD_FAIL_OSD_SCRUB_DELAY) && cfs_fail_val > 0) {
fid = &(*oic)->oic_fid;
lid = &(*oic)->oic_lid;
rc = osd_iit_iget(info, dev, fid, lid,
- scrub->os_pos_current, param->sb, &inode);
- if (rc != 0)
- return rc;
-
- if (inode->i_state & I_LUSTRE_NOSCRUB) {
- /* Only skip it for the first OI scrub accessing. */
- inode->i_state &= ~I_LUSTRE_NOSCRUB;
- rc = SCRUB_NEXT_NOSCRUB;
- } else if (!fid_is_norm(fid)) {
- rc = SCRUB_NEXT_IGIF;
- }
-
- iput(inode);
+ scrub->os_pos_current, param->sb, true);
return rc;
}
struct osd_otable_cache *ooc = &dev->od_otable_it->ooi_cache;
struct osd_scrub *scrub;
struct ptlrpc_thread *thread;
- struct inode *inode;
int rc;
rc = osd_iit_next(param, &ooc->ooc_pos_preload);
rc = osd_iit_iget(info, dev,
&ooc->ooc_cache[ooc->ooc_producer_idx].oic_fid,
&ooc->ooc_cache[ooc->ooc_producer_idx].oic_lid,
- ooc->ooc_pos_preload, param->sb, &inode);
+ ooc->ooc_pos_preload, param->sb, false);
/* If succeed, it needs to move forward; otherwise up layer LFSCK may
* ignore the failure, so it still need to skip the inode next time. */
ooc->ooc_pos_preload = param->gbase + ++(param->offset);
- if (rc == 0)
- iput(inode);
return rc;
}
struct l_wait_info lwi = { 0 };
struct osd_scrub *scrub = &dev->od_scrub;
struct scrub_file *sf = &scrub->os_file;
- __u64 *items = NULL;
struct ptlrpc_thread *thread = &scrub->os_thread;
struct osd_otable_it *it = dev->od_otable_it;
struct osd_otable_cache *ooc = it ? &it->ooi_cache : NULL;
case SCRUB_NEXT_WAIT:
goto wait;
case SCRUB_NEXT_NOSCRUB:
- items = &sf->sf_items_noscrub;
- break;
- case SCRUB_NEXT_IGIF:
- items = &sf->sf_items_igif;
- break;
- }
-
- if (items != NULL) {
down_write(&scrub->os_rwsem);
scrub->os_new_checked++;
- (*items)++;
+ sf->sf_items_noscrub++;
up_write(&scrub->os_rwsem);
goto next;
}
- LASSERTF(rc <= 0, "unexpected rc = %d\n", rc);
-
- if (rc != 0)
- rc = osd_scrub_error(dev, &oic->oic_lid, rc);
- else
- rc = osd_scrub_check_update(info, dev, oic);
+ rc = osd_scrub_check_update(info, dev, oic, rc);
if (rc != 0)
return rc;
RETURN(0);
}
+static int osd_otable_it_preload(const struct lu_env *env,
+ struct osd_otable_it *it)
+{
+ struct osd_device *dev = it->ooi_dev;
+ struct osd_scrub *scrub = &dev->od_scrub;
+ struct osd_otable_cache *ooc = &it->ooi_cache;
+ int rc;
+ ENTRY;
+
+ rc = osd_inode_iteration(osd_oti_get(env), dev,
+ OSD_OTABLE_IT_CACHE_SIZE, 1);
+ if (rc == SCRUB_IT_ALL)
+ it->ooi_all_cached = 1;
+
+ CDEBUG(D_LFSCK, "OSD pre-loaded: max = %u, preload = %u, rc = %d\n",
+ le32_to_cpu(LDISKFS_SB(osd_sb(dev))->s_es->s_inodes_count),
+ ooc->ooc_pos_preload, rc);
+
+ if (scrub->os_waiting && osd_scrub_has_window(scrub, ooc)) {
+ scrub->os_waiting = 0;
+ cfs_waitq_broadcast(&scrub->os_thread.t_ctl_waitq);
+ }
+
+ RETURN(rc < 0 ? rc : ooc->ooc_cached_items);
+}
+
static int osd_scrub_main(void *args)
{
struct lu_env env;
return rc;
}
+/* OI scrub start/stop */
+
static int do_osd_scrub_start(struct osd_device *dev, __u32 flags)
{
struct osd_scrub *scrub = &dev->od_scrub;
mutex_unlock(&dev->od_otable_mutex);
}
+/* OI scrub setup/cleanup */
+
static const char osd_scrub_name[] = "OI_scrub";
int osd_scrub_setup(const struct lu_env *env, struct osd_device *dev)
scrub->os_inode = igrab(filp->f_dentry->d_inode);
filp_close(filp, 0);
pop_ctxt(&saved, ctxt, NULL);
+ ldiskfs_set_inode_state(scrub->os_inode,
+ LDISKFS_STATE_LUSTRE_NO_OI);
rc = osd_scrub_file_load(scrub);
if (rc == -ENOENT) {
if (sf->sf_pos_last_checkpoint != 0)
scrub->os_pos_current = sf->sf_pos_last_checkpoint + 1;
else
- scrub->os_pos_current = LDISKFS_FIRST_INO(sb);
+ scrub->os_pos_current = LDISKFS_FIRST_INO(sb) + 1;
if (dirty != 0) {
rc = osd_scrub_file_store(scrub);
osd_oi_fini(osd_oti_get(env), dev);
}
+/* object table based iteration APIs */
+
static struct dt_it *osd_otable_it_init(const struct lu_env *env,
struct dt_object *dt, __u32 attr,
struct lustre_capa *capa)
RETURN(0);
}
-static int osd_otable_it_preload(const struct lu_env *env,
- struct osd_otable_it *it)
-{
- struct osd_device *dev = it->ooi_dev;
- struct osd_scrub *scrub = &dev->od_scrub;
- struct osd_otable_cache *ooc = &it->ooi_cache;
- int rc;
- ENTRY;
-
- rc = osd_inode_iteration(osd_oti_get(env), dev,
- OSD_OTABLE_IT_CACHE_SIZE, 1);
- if (rc == SCRUB_IT_ALL)
- it->ooi_all_cached = 1;
-
- CDEBUG(D_LFSCK, "OSD pre-loaded: max = %u, preload = %u, rc = %d\n",
- le32_to_cpu(LDISKFS_SB(osd_sb(dev))->s_es->s_inodes_count),
- ooc->ooc_pos_preload, rc);
-
- if (scrub->os_waiting && osd_scrub_has_window(scrub, ooc)) {
- scrub->os_waiting = 0;
- cfs_waitq_broadcast(&scrub->os_thread.t_ctl_waitq);
- }
-
- RETURN(rc < 0 ? rc : ooc->ooc_cached_items);
-}
-
static int osd_otable_it_next(const struct lu_env *env, struct dt_it *di)
{
struct osd_otable_it *it = (struct osd_otable_it *)di;
if (it->ooi_user_ready)
return 0;
- if (ooc->ooc_pos_preload < LDISKFS_FIRST_INO(osd_sb(dev)))
- ooc->ooc_pos_preload = LDISKFS_FIRST_INO(osd_sb(dev));
+ if (ooc->ooc_pos_preload <= LDISKFS_FIRST_INO(osd_sb(dev)))
+ ooc->ooc_pos_preload = LDISKFS_FIRST_INO(osd_sb(dev)) + 1;
it->ooi_user_ready = 1;
if (!scrub->os_full_speed)
cfs_waitq_broadcast(&scrub->os_thread.t_ctl_waitq);
}
};
+/* high priority inconsistent items list APIs */
+
int osd_oii_insert(struct osd_device *dev, struct osd_idmap_cache *oic,
int insert)
{
RETURN(-ENOENT);
}
+/* OI scrub dump */
+
static const char *scrub_status_names[] = {
"init",
"scanning",
down_read(&scrub->os_rwsem);
rc = snprintf(buf, len,
- "name: OI scrub\n"
+ "name: OI_scrub\n"
"magic: 0x%x\n"
"oi_files: %d\n"
"status: %s\n",
git://git.whamcloud.com / fs / lustre-release.git / blobdiff