X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fmdd%2Fmdd_device.c;h=f24c2086c7b5fcf4d973b986335061b495a1ad38;hp=1d049eac833ba95f2f9ef3c881eca26fc794e3d6;hb=ffe259f81cda5b5cd9241362308ec26ebad194b8;hpb=df1d59429cbfd1ea2464e863458b6a4a268e516b diff --git a/lustre/mdd/mdd_device.c b/lustre/mdd/mdd_device.c index 1d049ea..f24c208 100644 --- a/lustre/mdd/mdd_device.c +++ b/lustre/mdd/mdd_device.c @@ -15,11 +15,7 @@ * * 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 */ @@ -27,11 +23,10 @@ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. * - * Copyright (c) 2011, 2013, Intel Corporation. + * Copyright (c) 2011, 2017, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ - * Lustre is a trademark of Sun Microsystems, Inc. * * lustre/mdd/mdd_device.c * @@ -43,20 +38,25 @@ #define DEBUG_SUBSYSTEM S_MDS #include +#include #include +#include #include #include #include -#include +#include #include +#include +#include #include "mdd_internal.h" -const struct md_device_operations mdd_ops; +static const struct md_device_operations mdd_ops; static struct lu_device_type mdd_device_type; static const char mdd_root_dir_name[] = "ROOT"; static const char mdd_obf_dir_name[] = "fid"; +static const char mdd_lpf_dir_name[] = "lost+found"; /* Slab for MDD object allocation */ struct kmem_cache *mdd_object_kmem; @@ -117,19 +117,49 @@ out: static int mdd_init0(const struct lu_env *env, struct mdd_device *mdd, struct lu_device_type *t, struct lustre_cfg *lcfg) { - int rc; + int rc = -EINVAL; + const char *dev; + ENTRY; + /* LU-8040 Set defaults here, before values configs */ + mdd->mdd_cl.mc_flags = 0; /* off by default */ + /* per-server mask is set via parameters if needed */ + mdd->mdd_cl.mc_proc_mask = CHANGELOG_MINMASK; + /* current mask is calculated from mask above and users masks */ + mdd->mdd_cl.mc_current_mask = CHANGELOG_MINMASK; + mdd->mdd_cl.mc_deniednext = 60; /* 60 secs by default */ + + dev = lustre_cfg_string(lcfg, 0); + if (dev == NULL) + RETURN(rc); + + mdd->mdd_md_dev.md_lu_dev.ld_obd = class_name2obd(dev); + if (mdd->mdd_md_dev.md_lu_dev.ld_obd == NULL) + RETURN(rc); mdd->mdd_md_dev.md_lu_dev.ld_ops = &mdd_lu_ops; mdd->mdd_md_dev.md_ops = &mdd_ops; rc = mdd_connect_to_next(env, mdd, lustre_cfg_string(lcfg, 3)); - if (rc) + if (rc != 0) RETURN(rc); mdd->mdd_atime_diff = MAX_ATIME_DIFF; - /* sync permission changes */ - mdd->mdd_sync_permission = 1; + /* sync permission changes */ + mdd->mdd_sync_permission = 1; + /* enable changelog garbage collection */ + mdd->mdd_changelog_gc = 1; + /* with a significant amount of idle time */ + mdd->mdd_changelog_max_idle_time = CHLOG_MAX_IDLE_TIME; + /* or a significant amount of late indexes */ + mdd->mdd_changelog_max_idle_indexes = CHLOG_MAX_IDLE_INDEXES; + /* with a reasonable interval between each check */ + mdd->mdd_changelog_min_gc_interval = CHLOG_MIN_GC_INTERVAL; + /* with a very few number of free catalog entries */ + mdd->mdd_changelog_min_free_cat_entries = CHLOG_MIN_FREE_CAT_ENTRIES; + /* special default striping for files created with O_APPEND */ + mdd->mdd_append_stripe_count = 1; + mdd->mdd_append_pool[0] = '\0'; dt_conf_get(env, mdd->mdd_child, &mdd->mdd_dt_conf); @@ -146,17 +176,12 @@ static int mdd_init0(const struct lu_env *env, struct mdd_device *mdd, static struct lu_device *mdd_device_fini(const struct lu_env *env, struct lu_device *d) { - struct mdd_device *mdd = lu2mdd_dev(d); - int rc; + struct mdd_device *mdd = lu2mdd_dev(d); if (d->ld_site) lu_dev_del_linkage(d->ld_site, d); - rc = mdd_procfs_fini(mdd); - if (rc) { - CERROR("proc fini error %d \n", rc); - return ERR_PTR(rc); - } + mdd_procfs_fini(mdd); return NULL; } @@ -170,72 +195,230 @@ static int changelog_init_cb(const struct lu_env *env, struct llog_handle *llh, LASSERT(rec->cr_hdr.lrh_type == CHANGELOG_REC); CDEBUG(D_INFO, - "seeing record at index %d/%d/"LPU64" t=%x %.*s in log" - DOSTID"\n", hdr->lrh_index, rec->cr_hdr.lrh_index, + "seeing record at index %d/%d/%llu t=%x %.*s in log" + DFID"\n", hdr->lrh_index, rec->cr_hdr.lrh_index, rec->cr.cr_index, rec->cr.cr_type, rec->cr.cr_namelen, - rec->cr.cr_name, POSTID(&llh->lgh_id.lgl_oi)); - + changelog_rec_name(&rec->cr), PFID(&llh->lgh_id.lgl_oi.oi_fid)); + spin_lock(&mdd->mdd_cl.mc_lock); mdd->mdd_cl.mc_index = rec->cr.cr_index; + spin_unlock(&mdd->mdd_cl.mc_lock); return LLOG_PROC_BREAK; } +char *mdd_chlg_username(struct llog_changelog_user_rec2 *rec, char *buf, + size_t len) +{ + if (rec->cur_hdr.lrh_type == CHANGELOG_USER_REC2 && + rec->cur_name[0]) + snprintf(buf, len, "%s%u-%s", CHANGELOG_USER_PREFIX, + rec->cur_id, rec->cur_name); + else + snprintf(buf, len, "%s%u", CHANGELOG_USER_PREFIX, rec->cur_id); + return buf; +} + +__u32 mdd_chlg_usermask(struct llog_changelog_user_rec2 *rec) +{ + return rec->cur_hdr.lrh_type == CHANGELOG_USER_REC2 ? + rec->cur_mask : 0; +} + static int changelog_user_init_cb(const struct lu_env *env, struct llog_handle *llh, struct llog_rec_hdr *hdr, void *data) { - struct mdd_device *mdd = (struct mdd_device *)data; - struct llog_changelog_user_rec *rec = - (struct llog_changelog_user_rec *)hdr; + struct mdd_device *mdd = data; + struct llog_changelog_user_rec2 *rec; + char user_name[CHANGELOG_USER_NAMELEN_FULL]; + + LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN); - LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN); - LASSERT(rec->cur_hdr.lrh_type == CHANGELOG_USER_REC); + rec = container_of(hdr, typeof(*rec), cur_hdr); + if (rec->cur_hdr.lrh_type != CHANGELOG_USER_REC && + rec->cur_hdr.lrh_type != CHANGELOG_USER_REC2) { + CWARN("%s: unknown user type %x at index %u in log "DFID"\n", + mdd2obd_dev(mdd)->obd_name, hdr->lrh_index, + rec->cur_hdr.lrh_type, PFID(&llh->lgh_id.lgl_oi.oi_fid)); - CDEBUG(D_INFO, "seeing user at index %d/%d id=%d endrec="LPU64 - " in log "DOSTID"\n", hdr->lrh_index, rec->cur_hdr.lrh_index, - rec->cur_id, rec->cur_endrec, POSTID(&llh->lgh_id.lgl_oi)); + return 0; + } + + CDEBUG(D_INFO, "%s: user %s at index %u/%u endrec=%llu in log "DFID"\n", + mdd2obd_dev(mdd)->obd_name, mdd_chlg_username(rec, user_name, + sizeof(user_name)), + hdr->lrh_index, rec->cur_hdr.lrh_index, rec->cur_endrec, + PFID(&llh->lgh_id.lgl_oi.oi_fid)); spin_lock(&mdd->mdd_cl.mc_user_lock); mdd->mdd_cl.mc_lastuser = rec->cur_id; + mdd->mdd_cl.mc_users++; + if (rec->cur_hdr.lrh_type == CHANGELOG_USER_REC2 && rec->cur_mask) + mdd->mdd_cl.mc_current_mask |= rec->cur_mask; + else if (mdd->mdd_cl.mc_proc_mask == CHANGELOG_MINMASK) + mdd->mdd_cl.mc_current_mask |= CHANGELOG_DEFMASK; + spin_unlock(&mdd->mdd_cl.mc_user_lock); + spin_lock(&mdd->mdd_cl.mc_lock); if (rec->cur_endrec > mdd->mdd_cl.mc_index) mdd->mdd_cl.mc_index = rec->cur_endrec; - spin_unlock(&mdd->mdd_cl.mc_user_lock); + spin_unlock(&mdd->mdd_cl.mc_lock); return LLOG_PROC_BREAK; } +struct changelog_orphan_data { + __u64 clod_index; + struct mdd_device *clod_mdd; +}; + +/* find oldest changelog record index */ +static int changelog_detect_orphan_cb(const struct lu_env *env, + struct llog_handle *llh, + struct llog_rec_hdr *hdr, void *data) +{ + struct changelog_orphan_data *clod = data; + struct mdd_device *mdd = clod->clod_mdd; + struct llog_changelog_rec *rec; + + LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN); + + rec = container_of(hdr, typeof(*rec), cr_hdr); + if (rec->cr_hdr.lrh_type != CHANGELOG_REC) { + CWARN("%s: invalid record at index %d in log "DFID"\n", + mdd2obd_dev(mdd)->obd_name, hdr->lrh_index, + PFID(&llh->lgh_id.lgl_oi.oi_fid)); + /* try to find some next valid record and thus allow to recover + * from a corrupted LLOG, instead to assert and force a crash + */ + return 0; + } + + CDEBUG(D_INFO, + "%s: record at index %d/%d/%llu t=%x %.*s in log "DFID"\n", + mdd2obd_dev(mdd)->obd_name, hdr->lrh_index, + rec->cr_hdr.lrh_index, rec->cr.cr_index, rec->cr.cr_type, + rec->cr.cr_namelen, changelog_rec_name(&rec->cr), + PFID(&llh->lgh_id.lgl_oi.oi_fid)); + + clod->clod_index = rec->cr.cr_index; + + return LLOG_PROC_BREAK; +} + +/* find oldest changelog user index */ +static int changelog_user_detect_orphan_cb(const struct lu_env *env, + struct llog_handle *llh, + struct llog_rec_hdr *hdr, void *data) +{ + struct changelog_orphan_data *clod = data; + struct mdd_device *mdd = clod->clod_mdd; + struct llog_changelog_user_rec2 *rec; + char user_name[CHANGELOG_USER_NAMELEN_FULL]; + + LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN); + + rec = container_of(hdr, typeof(*rec), cur_hdr); + if (rec->cur_hdr.lrh_type != CHANGELOG_USER_REC && + rec->cur_hdr.lrh_type != CHANGELOG_USER_REC2) { + CWARN("%s: unknown user type %u at index %u in log "DFID"\n", + mdd2obd_dev(mdd)->obd_name, hdr->lrh_index, + rec->cur_hdr.lrh_type, PFID(&llh->lgh_id.lgl_oi.oi_fid)); + /* try to find some next valid record and thus allow to recover + * from a corrupted LLOG, instead to assert and force a crash + */ + return 0; + } + + CDEBUG(D_INFO, "%s: user %s at index %u/%u endrec=%llu in log "DFID"\n", + mdd2obd_dev(mdd)->obd_name, mdd_chlg_username(rec, user_name, + sizeof(user_name)), + hdr->lrh_index, rec->cur_hdr.lrh_index, + rec->cur_endrec, PFID(&llh->lgh_id.lgl_oi.oi_fid)); + + clod->clod_index = min_t(__u64, clod->clod_index, rec->cur_endrec); + + return 0; +} + +struct changelog_cancel_cookie { + long long endrec; + struct mdd_device *mdd; +}; + static int llog_changelog_cancel_cb(const struct lu_env *env, struct llog_handle *llh, struct llog_rec_hdr *hdr, void *data) { struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr; - struct llog_cookie cookie; - long long endrec = *(long long *)data; - int rc; + struct changelog_cancel_cookie *cl_cookie = + (struct changelog_cancel_cookie *)data; ENTRY; /* This is always a (sub)log, not the catalog */ LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN); - if (rec->cr.cr_index > endrec) + /* if current context is GC-thread allow it to stop upon umount + * remaining records cleanup will occur upon next mount + * + * also during testing, wait for GC-thread to be released + * + * XXX this requires the GC-thread to not fork a sub-thread via + * llog[_cat]_process_or_fork() and we may think to also implement + * this shutdown mechanism for manually started user unregister which + * can also take a long time if huge backlog of records + */ + if (unlikely(cl_cookie->mdd->mdd_cl.mc_gc_task == current)) { + /* wait to be released */ + while (CFS_FAIL_CHECK_QUIET(OBD_FAIL_FORCE_GC_THREAD)) + schedule(); + + if (kthread_should_stop()) + RETURN(LLOG_PROC_BREAK); + } + + if (rec->cr.cr_index > cl_cookie->endrec) /* records are in order, so we're done */ RETURN(LLOG_PROC_BREAK); - cookie.lgc_lgl = llh->lgh_id; - cookie.lgc_index = hdr->lrh_index; + if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_CHANGELOG_RACE))) { + if (cfs_fail_val == 0) + cfs_fail_val = hdr->lrh_index; + if (cfs_fail_val == hdr->lrh_index) + OBD_RACE(OBD_FAIL_MDS_CHANGELOG_RACE); + } + + /* Records folow one by one, cr_index++. We could calculate the + * last cr_index at this plain llog. And if it less then cookie endrec + * cancel the whole file. + */ + if ((LLOG_HDR_BITMAP_SIZE(llh->lgh_hdr) - hdr->lrh_index + + rec->cr.cr_index) < cl_cookie->endrec) { + int rc; + + if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_CHANGELOG_DEL))) { + if (cfs_fail_val == 0) { + cfs_fail_val = (unsigned long)llh & 0xFFFFFFFF; + OBD_RACE(OBD_FAIL_MDS_CHANGELOG_DEL); + } + } + rc = llog_destroy(env, llh); + if (!rc) { + CDEBUG(D_HA, "Changelog destroyed plain "DFID"\n", + PFID(&llh->lgh_id.lgl_oi.oi_fid)); + RETURN(LLOG_DEL_PLAIN); + } + } /* cancel them one at a time. I suppose we could store up the cookies * and cancel them all at once; probably more efficient, but this is * done as a user call, so who cares... */ - rc = llog_cat_cancel_records(env, llh->u.phd.phd_cat_handle, 1, - &cookie); - RETURN(rc < 0 ? rc : 0); + + RETURN(LLOG_DEL_RECORD); } static int llog_changelog_cancel(const struct lu_env *env, struct llog_ctxt *ctxt, - struct lov_stripe_md *lsm, int count, - struct llog_cookie *cookies, int flags) + struct changelog_cancel_cookie *cookie) { struct llog_handle *cathandle = ctxt->loc_handle; int rc; @@ -246,28 +429,77 @@ static int llog_changelog_cancel(const struct lu_env *env, LASSERT(cathandle->lgh_hdr->llh_flags & LLOG_F_IS_CAT); rc = llog_cat_process(env, cathandle, llog_changelog_cancel_cb, - (void *)cookies, 0, 0); + cookie, 0, 0); if (rc >= 0) /* 0 or 1 means we're done */ rc = 0; else - CERROR("%s: cancel idx %u of catalog "DOSTID" rc=%d\n", + CERROR("%s: cancel idx %u of catalog "DFID": rc = %d\n", ctxt->loc_obd->obd_name, cathandle->lgh_last_idx, - POSTID(&cathandle->lgh_id.lgl_oi), rc); + PFID(&cathandle->lgh_id.lgl_oi.oi_fid), rc); RETURN(rc); } static struct llog_operations changelog_orig_logops; -int mdd_changelog_on(const struct lu_env *env, struct mdd_device *mdd, int on); +static int +mdd_changelog_write_header(const struct lu_env *env, struct mdd_device *mdd, + int markerflags); + +static int +mdd_changelog_on(const struct lu_env *env, struct mdd_device *mdd) +{ + int rc = 0; + + if ((mdd->mdd_cl.mc_flags & CLM_ON) != 0) + return rc; + + LCONSOLE_INFO("%s: changelog on\n", mdd2obd_dev(mdd)->obd_name); + if (mdd->mdd_cl.mc_flags & CLM_ERR) { + CERROR("Changelogs cannot be enabled due to error " + "condition (see %s log).\n", + mdd2obd_dev(mdd)->obd_name); + rc = -ESRCH; + } else { + spin_lock(&mdd->mdd_cl.mc_lock); + mdd->mdd_cl.mc_flags |= CLM_ON; + spin_unlock(&mdd->mdd_cl.mc_lock); + rc = mdd_changelog_write_header(env, mdd, CLM_START); + } + return rc; +} + +static int +mdd_changelog_off(const struct lu_env *env, struct mdd_device *mdd) +{ + int rc = 0; + + if ((mdd->mdd_cl.mc_flags & CLM_ON) != CLM_ON) + return rc; + + LCONSOLE_INFO("%s: changelog off\n", mdd2obd_dev(mdd)->obd_name); + rc = mdd_changelog_write_header(env, mdd, CLM_FINI); + spin_lock(&mdd->mdd_cl.mc_lock); + mdd->mdd_cl.mc_flags &= ~CLM_ON; + spin_unlock(&mdd->mdd_cl.mc_lock); + + return rc; +} static int mdd_changelog_llog_init(const struct lu_env *env, struct mdd_device *mdd) { - struct obd_device *obd = mdd2obd_dev(mdd); - struct llog_ctxt *ctxt = NULL, *uctxt = NULL; - int rc; + struct obd_device *obd = mdd2obd_dev(mdd); + struct llog_ctxt *ctxt = NULL, *uctxt = NULL; + struct changelog_orphan_data clod = { + .clod_mdd = mdd, + .clod_index = -1, + }, user_orphan = { + .clod_mdd = mdd, + .clod_index = -1, + }; + int rc; ENTRY; @@ -293,7 +525,7 @@ static int mdd_changelog_llog_init(const struct lu_env *env, if (rc) GOTO(out_cleanup, rc); - rc = llog_cat_init_and_process(env, ctxt->loc_handle); + rc = llog_init_handle(env, ctxt->loc_handle, LLOG_F_IS_CAT, NULL); if (rc) GOTO(out_close, rc); @@ -306,7 +538,7 @@ static int mdd_changelog_llog_init(const struct lu_env *env, GOTO(out_close, rc); } - CDEBUG(D_IOCTL, "changelog starting index="LPU64"\n", + CDEBUG(D_IOCTL, "changelog starting index=%llu\n", mdd->mdd_cl.mc_index); /* setup user changelog */ @@ -326,10 +558,7 @@ static int mdd_changelog_llog_init(const struct lu_env *env, if (rc) GOTO(out_ucleanup, rc); - uctxt->loc_handle->lgh_logops->lop_add = llog_cat_add_rec; - uctxt->loc_handle->lgh_logops->lop_declare_add = llog_cat_declare_add_rec; - - rc = llog_cat_init_and_process(env, uctxt->loc_handle); + rc = llog_init_handle(env, uctxt->loc_handle, LLOG_F_IS_CAT, NULL); if (rc) GOTO(out_uclose, rc); @@ -341,12 +570,60 @@ static int mdd_changelog_llog_init(const struct lu_env *env, GOTO(out_uclose, rc); } + /* Finally apply per-server mask */ + mdd->mdd_cl.mc_current_mask |= mdd->mdd_cl.mc_proc_mask; + /* If we have registered users, assume we want changelogs on */ if (mdd->mdd_cl.mc_lastuser > 0) { - rc = mdd_changelog_on(env, mdd, 1); + rc = mdd_changelog_on(env, mdd); if (rc < 0) GOTO(out_uclose, rc); } + + /* find and clear any orphan changelog records (1st record index < + * smallest of all users current index), likely to come from an + * interrupted manual or GC-thread purge, as its user record had + * been deleted first + * XXX we may wait for a still registered user clear operation to + * do the job, but it may then take a long time to reach the user's + * real targetted records if a huge purge backlog is still to be + * processed as a long time idle user record could have been deleted + * XXX we may need to run end of purge as a separate thread + */ + rc = llog_cat_process(env, ctxt->loc_handle, changelog_detect_orphan_cb, + &clod, 0, 0); + if (rc < 0) { + CERROR("%s: changelog detect orphan failed: rc = %d\n", + obd->obd_name, rc); + GOTO(out_uclose, rc); + } + rc = llog_cat_process(env, uctxt->loc_handle, + changelog_user_detect_orphan_cb, + &user_orphan, 0, 0); + if (rc < 0) { + CERROR("%s: changelog user detect orphan failed: rc = %d\n", + obd->obd_name, rc); + GOTO(out_uclose, rc); + } + if (unlikely(clod.clod_index < user_orphan.clod_index)) { + struct changelog_cancel_cookie cl_cookie = { + .endrec = user_orphan.clod_index, + .mdd = mdd, + }; + + CWARN("%s : orphan changelog records found, starting from " + "index %llu to index %llu, being cleared now\n", + obd->obd_name, clod.clod_index, user_orphan.clod_index); + + /* XXX we may need to run end of purge as a separate thread */ + rc = llog_changelog_cancel(env, ctxt, &cl_cookie); + if (rc < 0) { + CERROR("%s: purge of changelog orphan records failed: " + "rc = %d\n", obd->obd_name, rc); + GOTO(out_uclose, rc); + } + } + llog_ctxt_put(ctxt); llog_ctxt_put(uctxt); RETURN(0); @@ -368,12 +645,14 @@ static int mdd_changelog_init(const struct lu_env *env, struct mdd_device *mdd) mdd->mdd_cl.mc_index = 0; spin_lock_init(&mdd->mdd_cl.mc_lock); - mdd->mdd_cl.mc_starttime = cfs_time_current_64(); - mdd->mdd_cl.mc_flags = 0; /* off by default */ - mdd->mdd_cl.mc_mask = CHANGELOG_DEFMASK; + mdd->mdd_cl.mc_starttime = ktime_get(); spin_lock_init(&mdd->mdd_cl.mc_user_lock); mdd->mdd_cl.mc_lastuser = 0; + /* ensure a GC check will, and a thread run may, occur upon start */ + mdd->mdd_cl.mc_gc_time = 0; + mdd->mdd_cl.mc_gc_task = MDD_CHLG_GC_NONE; + rc = mdd_changelog_llog_init(env, mdd); if (rc) { CERROR("%s: changelog setup during init failed: rc = %d\n", @@ -390,7 +669,42 @@ static void mdd_changelog_fini(const struct lu_env *env, struct obd_device *obd = mdd2obd_dev(mdd); struct llog_ctxt *ctxt; - mdd->mdd_cl.mc_flags = 0; + if (mdd->mdd_cl.mc_flags & CLM_CLEANUP_DONE) + return; + mdd->mdd_cl.mc_flags = CLM_CLEANUP_DONE; + +again: + /* stop GC-thread if running */ + spin_lock(&mdd->mdd_cl.mc_lock); + if (likely(mdd->mdd_cl.mc_gc_task == MDD_CHLG_GC_NONE)) { + /* avoid any attempt to run a GC-thread */ + mdd->mdd_cl.mc_gc_task = current; + spin_unlock(&mdd->mdd_cl.mc_lock); + } else { + struct task_struct *gc_task; + + if (unlikely(mdd->mdd_cl.mc_gc_task == MDD_CHLG_GC_NEED || + mdd->mdd_cl.mc_gc_task == MDD_CHLG_GC_START)) { + /* need to wait for birthing GC-thread to be started + * and to have set mc_gc_task to itself + */ + spin_unlock(&mdd->mdd_cl.mc_lock); + /* Add a tiny sleep */ + schedule_timeout_uninterruptible(1); + /* go back to fully check if GC-thread has started or + * even already exited or if a new one is starting... + */ + goto again; + } + /* take a reference on task_struct to avoid it to be freed + * upon exit + */ + gc_task = mdd->mdd_cl.mc_gc_task; + get_task_struct(gc_task); + spin_unlock(&mdd->mdd_cl.mc_lock); + kthread_stop(gc_task); + put_task_struct(gc_task); + } ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT); if (ctxt) { @@ -404,49 +718,20 @@ static void mdd_changelog_fini(const struct lu_env *env, } } -int mdd_changelog_write_header(const struct lu_env *env, - struct mdd_device *mdd, int markerflags); - -/* Start / stop recording */ -int mdd_changelog_on(const struct lu_env *env, struct mdd_device *mdd, int on) -{ - int rc = 0; - - if ((on == 1) && ((mdd->mdd_cl.mc_flags & CLM_ON) == 0)) { - LCONSOLE_INFO("%s: changelog on\n", mdd2obd_dev(mdd)->obd_name); - if (mdd->mdd_cl.mc_flags & CLM_ERR) { - CERROR("Changelogs cannot be enabled due to error " - "condition (see %s log).\n", - mdd2obd_dev(mdd)->obd_name); - rc = -ESRCH; - } else { - spin_lock(&mdd->mdd_cl.mc_lock); - mdd->mdd_cl.mc_flags |= CLM_ON; - spin_unlock(&mdd->mdd_cl.mc_lock); - rc = mdd_changelog_write_header(env, mdd, CLM_START); - } - } else if ((on == 0) && ((mdd->mdd_cl.mc_flags & CLM_ON) == CLM_ON)) { - LCONSOLE_INFO("%s: changelog off\n",mdd2obd_dev(mdd)->obd_name); - rc = mdd_changelog_write_header(env, mdd, CLM_FINI); - spin_lock(&mdd->mdd_cl.mc_lock); - mdd->mdd_cl.mc_flags &= ~CLM_ON; - spin_unlock(&mdd->mdd_cl.mc_lock); - } - return rc; -} - /** Remove entries with indicies up to and including \a endrec from the * changelog * \param mdd * \param endrec * \retval 0 ok */ -int mdd_changelog_llog_cancel(const struct lu_env *env, - struct mdd_device *mdd, long long endrec) +static int +mdd_changelog_llog_cancel(const struct lu_env *env, struct mdd_device *mdd, + long long endrec) { struct obd_device *obd = mdd2obd_dev(mdd); struct llog_ctxt *ctxt; long long unsigned cur; + struct changelog_cancel_cookie cookie; int rc; ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT); @@ -477,9 +762,11 @@ int mdd_changelog_llog_cancel(const struct lu_env *env, /* Some records were purged, so reset repeat-access time (so we record new mtime update records, so users can see a file has been changed since the last purge) */ - mdd->mdd_cl.mc_starttime = cfs_time_current_64(); + mdd->mdd_cl.mc_starttime = ktime_get(); - rc = llog_cancel(env, ctxt, NULL, 1, (struct llog_cookie *)&endrec, 0); + cookie.endrec = endrec; + cookie.mdd = mdd; + rc = llog_changelog_cancel(env, ctxt, &cookie); out: llog_ctxt_put(ctxt); return rc; @@ -503,13 +790,13 @@ int mdd_changelog_write_header(const struct lu_env *env, ENTRY; - if (mdd->mdd_cl.mc_mask & (1 << CL_MARK)) { - mdd->mdd_cl.mc_starttime = cfs_time_current_64(); + if (mdd->mdd_cl.mc_current_mask & BIT(CL_MARK)) { + mdd->mdd_cl.mc_starttime = ktime_get(); RETURN(0); } reclen = llog_data_len(sizeof(*rec) + len); - buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_big_buf, reclen); + buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mdi_chlg_buf, reclen); if (buf->lb_buf == NULL) RETURN(-ENOMEM); rec = buf->lb_buf; @@ -517,26 +804,24 @@ int mdd_changelog_write_header(const struct lu_env *env, rec->cr.cr_flags = CLF_VERSION; rec->cr.cr_type = CL_MARK; rec->cr.cr_namelen = len; - memcpy(rec->cr.cr_name, obd->obd_name, rec->cr.cr_namelen); + memcpy(changelog_rec_name(&rec->cr), obd->obd_name, rec->cr.cr_namelen); /* Status and action flags */ rec->cr.cr_markerflags = mdd->mdd_cl.mc_flags | markerflags; - rec->cr_hdr.lrh_len = llog_data_len(sizeof(*rec) + rec->cr.cr_namelen); + rec->cr_hdr.lrh_len = llog_data_len(changelog_rec_size(&rec->cr) + + rec->cr.cr_namelen); rec->cr_hdr.lrh_type = CHANGELOG_REC; rec->cr.cr_time = cl_time(); - spin_lock(&mdd->mdd_cl.mc_lock); - rec->cr.cr_index = ++mdd->mdd_cl.mc_index; - spin_unlock(&mdd->mdd_cl.mc_lock); ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT); LASSERT(ctxt); - rc = llog_cat_add(env, ctxt->loc_handle, &rec->cr_hdr, NULL, NULL); + rc = llog_cat_add(env, ctxt->loc_handle, &rec->cr_hdr, NULL); if (rc > 0) rc = 0; llog_ctxt_put(ctxt); /* assume on or off event; reset repeat-access time */ - mdd->mdd_cl.mc_starttime = cfs_time_current_64(); + mdd->mdd_cl.mc_starttime = ktime_get(); RETURN(rc); } @@ -557,27 +842,15 @@ static int obf_lookup(const struct lu_env *env, struct md_object *p, name++; sscanf(name, SFID, RFID(f)); - if (!fid_is_sane(f)) { - CWARN("%s: bad FID format [%s], should be "DFID"\n", - mdd2obd_dev(mdd)->obd_name, lname->ln_name, - (__u64)FID_SEQ_NORMAL, 1, 0); - GOTO(out, rc = -EINVAL); - } + if (!fid_is_sane(f)) + GOTO(out, rc = -ENOENT); if (!fid_is_norm(f) && !fid_is_igif(f) && !fid_is_root(f) && - !fid_seq_is_dot(f->f_seq)) { - CWARN("%s: "DFID" is invalid, sequence should be " - ">= "LPX64" or within ["LPX64","LPX64"].\n", - mdd2obd_dev(mdd)->obd_name, PFID(f), - (__u64)FID_SEQ_NORMAL, (__u64)FID_SEQ_IGIF, - (__u64)FID_SEQ_IGIF_MAX); - GOTO(out, rc = -EINVAL); - } + !fid_seq_is_dot(f->f_seq)) + GOTO(out, rc = -ENOENT); /* Check if object with this fid exists */ child = mdd_object_find(env, mdd, f); - if (child == NULL) - GOTO(out, rc = 0); if (IS_ERR(child)) GOTO(out, rc = PTR_ERR(child)); @@ -590,42 +863,73 @@ out: return rc; } -static int obf_create(const struct lu_env *env, struct md_object *pobj, - const struct lu_name *lname, struct md_object *child, - struct md_op_spec *spec, struct md_attr* ma) +static int mdd_dummy_create(const struct lu_env *env, + struct md_object *pobj, + const struct lu_name *lname, + struct md_object *child, + struct md_op_spec *spec, + struct md_attr* ma) { - return -EPERM; + return -EPERM; } -static int obf_rename(const struct lu_env *env, - struct md_object *src_pobj, struct md_object *tgt_pobj, - const struct lu_fid *lf, const struct lu_name *lsname, - struct md_object *tobj, const struct lu_name *ltname, - struct md_attr *ma) +static int mdd_dummy_rename(const struct lu_env *env, + struct md_object *src_pobj, + struct md_object *tgt_pobj, + const struct lu_fid *lf, + const struct lu_name *lsname, + struct md_object *tobj, + const struct lu_name *ltname, + struct md_attr *ma) { - return -EPERM; + return -EPERM; } -static int obf_link(const struct lu_env *env, struct md_object *tgt_obj, - struct md_object *src_obj, const struct lu_name *lname, - struct md_attr *ma) +static int mdd_dummy_link(const struct lu_env *env, + struct md_object *tgt_obj, + struct md_object *src_obj, + const struct lu_name *lname, + struct md_attr *ma) { - return -EPERM; + return -EPERM; } -static int obf_unlink(const struct lu_env *env, struct md_object *pobj, - struct md_object *cobj, const struct lu_name *lname, - struct md_attr *ma, int no_name) +static int mdd_dummy_unlink(const struct lu_env *env, + struct md_object *pobj, + struct md_object *cobj, + const struct lu_name *lname, + struct md_attr *ma, + int no_name) { return -EPERM; } -static struct md_dir_operations mdd_obf_dir_ops = { - .mdo_lookup = obf_lookup, - .mdo_create = obf_create, - .mdo_rename = obf_rename, - .mdo_link = obf_link, - .mdo_unlink = obf_unlink +int mdd_create(const struct lu_env *env, struct md_object *pobj, + const struct lu_name *lname, struct md_object *child, + struct md_op_spec *spec, struct md_attr *ma); +static int mdd_obf_create(const struct lu_env *env, struct md_object *pobj, + const struct lu_name *lname, struct md_object *child, + struct md_op_spec *spec, struct md_attr *ma) +{ + if (spec->sp_cr_flags & MDS_OPEN_VOLATILE) + return mdd_create(env, pobj, lname, child, spec, ma); + RETURN(-EPERM); +} + +static const struct md_dir_operations mdd_obf_dir_ops = { + .mdo_lookup = obf_lookup, + .mdo_create = mdd_obf_create, + .mdo_rename = mdd_dummy_rename, + .mdo_link = mdd_dummy_link, + .mdo_unlink = mdd_dummy_unlink +}; + +static const struct md_dir_operations mdd_lpf_dir_ops = { + .mdo_lookup = mdd_lookup, + .mdo_create = mdd_dummy_create, + .mdo_rename = mdd_dummy_rename, + .mdo_link = mdd_dummy_link, + .mdo_unlink = mdd_dummy_unlink }; static struct md_object *mdo_locate(const struct lu_env *env, @@ -641,11 +945,38 @@ static struct md_object *mdo_locate(const struct lu_env *env, LASSERT(obj != NULL); mdo = lu2md(obj); } else { - mdo = ERR_PTR(PTR_ERR(obj)); + mdo = ERR_CAST(obj); } return mdo; } +static int mdd_lpf_setup(const struct lu_env *env, struct mdd_device *m) +{ + struct md_object *mdo; + struct mdd_object *mdd_lpf; + struct lu_fid fid = LU_LPF_FID; + int rc; + ENTRY; + + rc = mdd_local_file_create(env, m, mdd_object_fid(m->mdd_dot_lustre), + mdd_lpf_dir_name, S_IFDIR | S_IRUSR | S_IXUSR, + &fid); + if (rc != 0) + RETURN(rc); + + mdo = mdo_locate(env, &m->mdd_md_dev, &fid); + if (IS_ERR(mdo)) + RETURN(PTR_ERR(mdo)); + + LASSERT(lu_object_exists(&mdo->mo_lu)); + + mdd_lpf = md2mdd_obj(mdo); + mdd_lpf->mod_obj.mo_dir_ops = &mdd_lpf_dir_ops; + m->mdd_dot_lustre_objs.mdd_lpf = mdd_lpf; + + RETURN(0); +} + /** * Create special in-memory "fid" object for open-by-fid. */ @@ -674,6 +1005,23 @@ static int mdd_obf_setup(const struct lu_env *env, struct mdd_device *m) return 0; } +static void mdd_dot_lustre_cleanup(const struct lu_env *env, + struct mdd_device *m) +{ + if (m->mdd_dot_lustre_objs.mdd_lpf != NULL) { + mdd_object_put(env, m->mdd_dot_lustre_objs.mdd_lpf); + m->mdd_dot_lustre_objs.mdd_lpf = NULL; + } + if (m->mdd_dot_lustre_objs.mdd_obf != NULL) { + mdd_object_put(env, m->mdd_dot_lustre_objs.mdd_obf); + m->mdd_dot_lustre_objs.mdd_obf = NULL; + } + if (m->mdd_dot_lustre != NULL) { + mdd_object_put(env, m->mdd_dot_lustre); + m->mdd_dot_lustre = NULL; + } +} + /** Setup ".lustre" directory object */ static int mdd_dot_lustre_setup(const struct lu_env *env, struct mdd_device *m) { @@ -703,16 +1051,22 @@ static int mdd_dot_lustre_setup(const struct lu_env *env, struct mdd_device *m) mdd2obd_dev(m)->obd_name, rc); GOTO(out, rc); } + + rc = mdd_lpf_setup(env, m); + if (rc != 0) { + CERROR("%s: error initializing \"lost+found\": rc = %d.\n", + mdd2obd_dev(m)->obd_name, rc); + GOTO(out, rc); + } + RETURN(0); + out: - mdd_object_put(env, m->mdd_dot_lustre); - m->mdd_dot_lustre = NULL; + mdd_dot_lustre_cleanup(env, m); + return rc; } - -static struct llog_operations hsm_actions_logops; - /** * set llog methods and create LLOG_AGENT_ORIG_CTXT llog * object in obd_device @@ -729,7 +1083,7 @@ static int mdd_hsm_actions_llog_init(const struct lu_env *env, obd->obd_lvfs_ctxt.dt = m->mdd_bottom; rc = llog_setup(env, obd, &obd->obd_olg, LLOG_AGENT_ORIG_CTXT, - obd, &hsm_actions_logops); + obd, &llog_common_cat_ops); if (rc) { CERROR("%s: hsm actions llog setup failed: rc = %d\n", obd->obd_name, rc); @@ -747,7 +1101,7 @@ static int mdd_hsm_actions_llog_init(const struct lu_env *env, GOTO(out_cleanup, rc); } - rc = llog_cat_init_and_process(env, ctxt->loc_handle); + rc = llog_init_handle(env, ctxt->loc_handle, LLOG_F_IS_CAT, NULL); if (rc) GOTO(out_close, rc); @@ -786,16 +1140,21 @@ static int mdd_hsm_actions_llog_fini(const struct lu_env *env, static void mdd_device_shutdown(const struct lu_env *env, struct mdd_device *m, struct lustre_cfg *cfg) { + barrier_deregister(m->mdd_bottom); lfsck_degister(env, m->mdd_bottom); mdd_hsm_actions_llog_fini(env, m); mdd_changelog_fini(env, m); - orph_index_fini(env, m); - if (m->mdd_dot_lustre_objs.mdd_obf) - mdd_object_put(env, m->mdd_dot_lustre_objs.mdd_obf); - if (m->mdd_dot_lustre) - mdd_object_put(env, m->mdd_dot_lustre); - if (m->mdd_los != NULL) + mdd_orphan_index_fini(env, m); + mdd_dot_lustre_cleanup(env, m); + if (mdd2obd_dev(m)->u.obt.obt_nodemap_config_file) { + nm_config_file_deregister_tgt(env, + mdd2obd_dev(m)->u.obt.obt_nodemap_config_file); + mdd2obd_dev(m)->u.obt.obt_nodemap_config_file = NULL; + } + if (m->mdd_los != NULL) { local_oid_storage_fini(env, m->mdd_los); + m->mdd_los = NULL; + } lu_site_purge(env, mdd2lu_dev(m)->ld_site, ~0); if (m->mdd_child_exp) @@ -812,23 +1171,27 @@ static int mdd_process_config(const struct lu_env *env, ENTRY; switch (cfg->lcfg_command) { - case LCFG_PARAM: { - struct lprocfs_static_vars lvars; - - lprocfs_mdd_init_vars(&lvars); - rc = class_process_proc_param(PARAM_MDD, lvars.obd_vars, cfg,m); - if (rc > 0 || rc == -ENOSYS) - /* we don't understand; pass it on */ - rc = next->ld_ops->ldo_process_config(env, next, cfg); - break; - } + case LCFG_PARAM: { + ssize_t count; + + count = class_modify_config(cfg, PARAM_MDD, &m->mdd_kobj); + rc = count > 0 ? 0 : count; + if (rc) + /* we don't understand; pass it on */ + rc = next->ld_ops->ldo_process_config(env, next, cfg); + break; + } case LCFG_SETUP: rc = next->ld_ops->ldo_process_config(env, next, cfg); if (rc) GOTO(out, rc); dt_conf_get(env, dt, &m->mdd_dt_conf); break; - case LCFG_CLEANUP: + case LCFG_PRE_CLEANUP: + rc = next->ld_ops->ldo_process_config(env, next, cfg); + mdd_generic_thread_stop(&m->mdd_orphan_cleanup_thread); + break; + case LCFG_CLEANUP: rc = next->ld_ops->ldo_process_config(env, next, cfg); lu_dev_del_linkage(d->ld_site, d); mdd_device_shutdown(env, m, cfg); @@ -842,29 +1205,29 @@ out: } static int mdd_recovery_complete(const struct lu_env *env, - struct lu_device *d) + struct lu_device *d) { - struct mdd_device *mdd = lu2mdd_dev(d); + struct mdd_device *mdd = lu2mdd_dev(d); struct lu_device *next; - int rc; - ENTRY; + int rc; + ENTRY; - LASSERT(mdd != NULL); + LASSERT(mdd != NULL); next = &mdd->mdd_child->dd_lu_dev; - /* XXX: orphans handling. */ - __mdd_orphan_cleanup(env, mdd); - rc = next->ld_ops->ldo_recovery_complete(env, next); + if (!mdd->mdd_bottom->dd_rdonly) + mdd_orphan_cleanup(env, mdd); + rc = next->ld_ops->ldo_recovery_complete(env, next); - RETURN(rc); + RETURN(rc); } int mdd_local_file_create(const struct lu_env *env, struct mdd_device *mdd, - const struct lu_fid *pfid, const char *name, __u32 mode, - struct lu_fid *fid) + const struct lu_fid *pfid, const char *name, + __u32 mode, struct lu_fid *fid) { - struct dt_object *parent, *dto; - int rc; + struct dt_object *parent, *dto; + int rc = 0; ENTRY; @@ -886,10 +1249,16 @@ int mdd_local_file_create(const struct lu_env *env, struct mdd_device *mdd, *fid = *lu_object_fid(&dto->do_lu); /* since stack is not fully set up the local_storage uses own stack * and we should drop its object from cache */ - lu_object_put_nocache(env, &dto->do_lu); + dt_object_put_nocache(env, dto); EXIT; out_put: - lu_object_put(env, &parent->do_lu); + dt_object_put(env, parent); + return rc; +} + +static int mdd_lfsck_out_notify(const struct lu_env *env, void *data, + enum lfsck_events event) +{ return 0; } @@ -897,10 +1266,14 @@ static int mdd_prepare(const struct lu_env *env, struct lu_device *pdev, struct lu_device *cdev) { - struct mdd_device *mdd = lu2mdd_dev(cdev); - struct lu_device *next = &mdd->mdd_child->dd_lu_dev; - struct lu_fid fid; - int rc; + struct mdd_device *mdd = lu2mdd_dev(cdev); + struct lu_device *next = &mdd->mdd_child->dd_lu_dev; + struct nm_config_file *nodemap_config; + struct obd_device_target *obt = &mdd2obd_dev(mdd)->u.obt; + struct dt_object *root = NULL; + struct thandle *th = NULL; + struct lu_fid fid; + int rc; ENTRY; @@ -932,6 +1305,58 @@ static int mdd_prepare(const struct lu_env *env, GOTO(out_los, rc); } + /* store a default directory layout on the root directory if + * it doesn't already exist to improve MDT space balance. + */ + root = dt_locate(env, mdd->mdd_bottom, &fid); + if (unlikely(IS_ERR(root))) + GOTO(out_los, rc = PTR_ERR(root)); + + rc = dt_xattr_get(env, root, &LU_BUF_NULL, + XATTR_NAME_DEFAULT_LMV); + if (rc == -ENODATA) { + struct lu_buf buf; + struct lmv_user_md lmv_default = { + .lum_magic = LMV_USER_MAGIC, + .lum_stripe_count = 1, + .lum_stripe_offset = LMV_OFFSET_DEFAULT, + .lum_max_inherit = LMV_INHERIT_UNLIMITED, + .lum_max_inherit_rr = LMV_INHERIT_RR_ROOT, + }; + + th = dt_trans_create(env, mdd->mdd_bottom); + if (IS_ERR(th)) + GOTO(out_root_put, rc = PTR_ERR(th)); + + buf.lb_buf = &lmv_default; + buf.lb_len = sizeof(lmv_default); + rc = dt_declare_xattr_set(env, root, &buf, + XATTR_NAME_DEFAULT_LMV, 0, + th); + if (rc) + GOTO(out_trans_stop, rc); + + rc = dt_trans_start_local(env, mdd->mdd_bottom, th); + if (rc) + GOTO(out_trans_stop, rc); + + rc = dt_xattr_set(env, root, &buf, + XATTR_NAME_DEFAULT_LMV, 0, th); + if (rc) + GOTO(out_trans_stop, rc); + + dt_trans_stop(env, mdd->mdd_bottom, th); + th = NULL; + } else if (rc < 0 && rc != -ERANGE) { + CERROR("%s: get default LMV of root failed: rc = %d\n", + mdd2obd_dev(mdd)->obd_name, rc); + + GOTO(out_root_put, rc); + } + + dt_object_put(env, root); + root = NULL; + mdd->mdd_root_fid = fid; rc = mdd_dot_lustre_setup(env, mdd); if (rc != 0) { @@ -939,18 +1364,13 @@ static int mdd_prepare(const struct lu_env *env, mdd2obd_dev(mdd)->obd_name, rc); GOTO(out_los, rc); } - - rc = mdd_compat_fixes(env, mdd); - if (rc) - GOTO(out_los, rc); - } else { /* Normal client usually send root access to MDT0 directly, * the root FID on non-MDT0 will only be used by echo client. */ mdd->mdd_root_fid = fid; } - rc = orph_index_init(env, mdd); + rc = mdd_orphan_index_init(env, mdd); if (rc < 0) GOTO(out_dot, rc); @@ -965,26 +1385,54 @@ static int mdd_prepare(const struct lu_env *env, if (rc != 0) GOTO(out_changelog, rc); - rc = lfsck_register(env, mdd->mdd_bottom, mdd->mdd_child, true); + nodemap_config = nm_config_file_register_tgt(env, mdd->mdd_bottom, + mdd->mdd_los); + if (IS_ERR(nodemap_config)) { + rc = PTR_ERR(nodemap_config); + if (rc != -EROFS) + GOTO(out_hsm, rc); + } else { + obt->obt_nodemap_config_file = nodemap_config; + } + + rc = lfsck_register(env, mdd->mdd_bottom, mdd->mdd_child, + mdd2obd_dev(mdd), mdd_lfsck_out_notify, + mdd, true); if (rc != 0) { CERROR("%s: failed to initialize lfsck: rc = %d\n", mdd2obd_dev(mdd)->obd_name, rc); - GOTO(out_hsm, rc); + GOTO(out_nodemap, rc); } + + rc = barrier_register(mdd->mdd_bottom, mdd->mdd_child); + if (rc) { + CERROR("%s: failed to register to barrier: rc = %d\n", + mdd2obd_dev(mdd)->obd_name, rc); + GOTO(out_lfsck, rc); + } + RETURN(0); + +out_lfsck: + lfsck_degister(env, mdd->mdd_bottom); +out_nodemap: + nm_config_file_deregister_tgt(env, obt->obt_nodemap_config_file); + obt->obt_nodemap_config_file = NULL; out_hsm: mdd_hsm_actions_llog_fini(env, mdd); out_changelog: mdd_changelog_fini(env, mdd); out_orph: - orph_index_fini(env, mdd); + mdd_orphan_index_fini(env, mdd); out_dot: - if (mdd_seq_site(mdd)->ss_node_id == 0) { - mdd_object_put(env, mdd->mdd_dot_lustre); - mdd->mdd_dot_lustre = NULL; - mdd_object_put(env, mdd->mdd_dot_lustre_objs.mdd_obf); - mdd->mdd_dot_lustre_objs.mdd_obf = NULL; - } + if (mdd_seq_site(mdd)->ss_node_id == 0) + mdd_dot_lustre_cleanup(env, mdd); +out_trans_stop: + if (th != NULL) + dt_trans_stop(env, mdd->mdd_bottom, th); +out_root_put: + if (root != NULL) + dt_object_put(env, root); out_los: local_oid_storage_fini(env, mdd->mdd_los); mdd->mdd_los = NULL; @@ -992,11 +1440,30 @@ out_los: return rc; } +/** + * Implementation of lu_device_operations::ldo_fid_alloc() for MDD. + * + * Find corresponding device by passed parent and name, and allocate FID from + * there. + * + * see include/lu_object.h for the details. + */ +static int mdd_fid_alloc(const struct lu_env *env, struct lu_device *d, + struct lu_fid *fid, struct lu_object *parent, + const struct lu_name *name) +{ + struct mdd_device *mdd = lu2mdd_dev(d); + struct lu_object *o = lu_object_next(parent); + + return dt_fid_alloc(env, mdd->mdd_child, fid, o, name); +} + const struct lu_device_operations mdd_lu_ops = { .ldo_object_alloc = mdd_object_alloc, .ldo_process_config = mdd_process_config, .ldo_recovery_complete = mdd_recovery_complete, .ldo_prepare = mdd_prepare, + .ldo_fid_alloc = mdd_fid_alloc, }; static int mdd_root_get(const struct lu_env *env, @@ -1020,48 +1487,19 @@ static int mdd_statfs(const struct lu_env *env, struct md_device *m, ENTRY; - rc = mdd_child_ops(mdd)->dt_statfs(env, mdd->mdd_child, sfs); + rc = mdd_child_ops(mdd)->dt_statfs(env, mdd->mdd_child, sfs, NULL); sfs->os_namelen = min_t(__u32, sfs->os_namelen, NAME_MAX); RETURN(rc); } -/* - * No permission check is needed. - */ -static int mdd_init_capa_ctxt(const struct lu_env *env, struct md_device *m, - int mode, unsigned long timeout, __u32 alg, - struct lustre_capa_key *keys) -{ - struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev); - int rc; - ENTRY; - - /* need barrier for mds_capa_keys access. */ - - rc = mdd_child_ops(mdd)->dt_init_capa_ctxt(env, mdd->mdd_child, mode, - timeout, alg, keys); - RETURN(rc); -} - -static int mdd_maxeasize_get(const struct lu_env *env, struct md_device *m, - int *easize) +static const struct dt_device_param *mdd_dtconf_get(const struct lu_env *env, + struct md_device *m) { struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev); - ENTRY; - - *easize = mdd->mdd_dt_conf.ddp_max_ea_size; - RETURN(0); -} - -static int mdd_update_capa_key(const struct lu_env *env, - struct md_device *m, - struct lustre_capa_key *key) -{ - /* we do not support capabilities ... */ - return -EINVAL; + return &mdd->mdd_dt_conf; } static int mdd_llog_ctxt_get(const struct lu_env *env, struct md_device *m, @@ -1160,8 +1598,7 @@ static int mdd_obd_disconnect(struct obd_export *exp) } static int mdd_obd_get_info(const struct lu_env *env, struct obd_export *exp, - __u32 keylen, void *key, __u32 *vallen, void *val, - struct lov_stripe_md *lsm) + __u32 keylen, void *key, __u32 *vallen, void *val) { int rc = -EINVAL; @@ -1175,197 +1612,612 @@ static int mdd_obd_get_info(const struct lu_env *env, struct obd_export *exp, mdd = lu2mdd_dev(obd->obd_lu_dev); LASSERT(mdd); rc = obd_get_info(env, mdd->mdd_child_exp, keylen, key, vallen, - val, lsm); + val); RETURN(rc); } RETURN(rc); } -static struct obd_ops mdd_obd_device_ops = { +static int mdd_obd_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) +{ + struct obd_device *obd = exp->exp_obd; + struct mdd_device *mdd; + int rc; + + if (!obd->obd_set_up || obd->obd_stopping) + RETURN(-EAGAIN); + + mdd = lu2mdd_dev(obd->obd_lu_dev); + LASSERT(mdd); + rc = obd_set_info_async(env, mdd->mdd_child_exp, keylen, key, + vallen, val, set); + RETURN(rc); +} + +static const struct obd_ops mdd_obd_device_ops = { .o_owner = THIS_MODULE, .o_connect = mdd_obd_connect, .o_disconnect = mdd_obd_disconnect, .o_get_info = mdd_obd_get_info, + .o_set_info_async = mdd_obd_set_info_async, +}; + +struct mdd_changelog_name_check_data { + const char *mcnc_name; + __u32 mcnc_id; }; +/** + * changelog_recalc_mask callback + * + * Is is called per each registered user and calculates combined mask of + * all registered users. + */ +static int mdd_changelog_name_check_cb(const struct lu_env *env, + struct llog_handle *llh, + struct llog_rec_hdr *hdr, void *data) +{ + struct llog_changelog_user_rec2 *rec; + struct mdd_changelog_name_check_data *mcnc = data; + + rec = container_of(hdr, typeof(*rec), cur_hdr); + if (rec->cur_hdr.lrh_type == CHANGELOG_USER_REC2 && + !strncmp(rec->cur_name, mcnc->mcnc_name, sizeof(rec->cur_name))) { + mcnc->mcnc_id = rec->cur_id; + return -EEXIST; + } + return 0; +} + +static int mdd_changelog_name_check(const struct lu_env *env, + struct llog_ctxt *ctxt, + struct mdd_device *mdd, const char *name) +{ + struct mdd_changelog_name_check_data mcnc = { .mcnc_name = name, }; + int chr = 0; + int rc; + + ENTRY; + + /* first symbol is a letter */ + if (!isalpha(name[0])) { + rc = -EINVAL; + CERROR("%s: first char '%c' in '%s' is not letter: rc = %d\n", + mdd2obd_dev(mdd)->obd_name, name[0], name, rc); + RETURN(rc); + } + + /* name is valid: contains letters, numbers and '-', '_' only */ + while (name[++chr]) { + if (!(isalnum(name[chr]) || name[chr] == '_' || + name[chr] == '-')) { + rc = -EINVAL; + CERROR("%s: wrong char '%c' in name '%s': rc = %d\n", + mdd2obd_dev(mdd)->obd_name, name[chr], name, rc); + RETURN(rc); + } + } + + if (chr > CHANGELOG_USER_NAMELEN) { + rc = -ENAMETOOLONG; + CERROR("%s: name '%s' is over %d symbols limit: rc = %d\n", + mdd2obd_dev(mdd)->obd_name, name, + CHANGELOG_USER_NAMELEN, rc); + RETURN(rc); + } + + rc = llog_cat_process(env, ctxt->loc_handle, + mdd_changelog_name_check_cb, &mcnc, 0, 0); + if (rc == -EEXIST) + CWARN("%s: changelog name %s exists already: rc = %d\n", + mdd2obd_dev(mdd)->obd_name, name, rc); + else if (rc < 0) + CWARN("%s: failed user changelog processing: rc = %d\n", + mdd2obd_dev(mdd)->obd_name, rc); + RETURN(rc); +} + static int mdd_changelog_user_register(const struct lu_env *env, - struct mdd_device *mdd, int *id) + struct mdd_device *mdd, int *id, + const char *name, const char *mask) { - struct llog_ctxt *ctxt; - struct llog_changelog_user_rec *rec; - int rc; - ENTRY; + struct llog_ctxt *ctxt; + struct llog_changelog_user_rec2 *rec; + char user_name[CHANGELOG_USER_NAMELEN_FULL]; + int rc; - ctxt = llog_get_context(mdd2obd_dev(mdd), + ENTRY; + + ctxt = llog_get_context(mdd2obd_dev(mdd), LLOG_CHANGELOG_USER_ORIG_CTXT); - if (ctxt == NULL) - RETURN(-ENXIO); + if (ctxt == NULL) + RETURN(-ENXIO); - OBD_ALLOC_PTR(rec); - if (rec == NULL) { - llog_ctxt_put(ctxt); - RETURN(-ENOMEM); - } + OBD_ALLOC_PTR(rec); + if (rec == NULL) { + llog_ctxt_put(ctxt); + RETURN(-ENOMEM); + } - /* Assume we want it on since somebody registered */ - rc = mdd_changelog_on(env, mdd, 1); - if (rc) - GOTO(out, rc); + CFS_RACE(CFS_FAIL_CHLOG_USER_REG_UNREG_RACE); - rec->cur_hdr.lrh_len = sizeof(*rec); - rec->cur_hdr.lrh_type = CHANGELOG_USER_REC; + rec->cur_hdr.lrh_len = sizeof(*rec); + /* keep old record type for users without mask/name for + * compatibility needs + */ + if (mask || (name && name[0])) + rec->cur_hdr.lrh_type = CHANGELOG_USER_REC2; + else + rec->cur_hdr.lrh_type = CHANGELOG_USER_REC; spin_lock(&mdd->mdd_cl.mc_user_lock); if (mdd->mdd_cl.mc_lastuser == (unsigned int)(-1)) { spin_unlock(&mdd->mdd_cl.mc_user_lock); - CERROR("Maximum number of changelog users exceeded!\n"); - GOTO(out, rc = -EOVERFLOW); + rc = -EOVERFLOW; + CERROR("%s: registering %s user: max ID is exceeded: rc = %d\n", + mdd2obd_dev(mdd)->obd_name, + (name && name[0]) ? name : "new", rc); + GOTO(out, rc); } *id = rec->cur_id = ++mdd->mdd_cl.mc_lastuser; + mdd->mdd_cl.mc_users++; + spin_unlock(&mdd->mdd_cl.mc_user_lock); + + rec->cur_time = (__u32)ktime_get_real_seconds(); + if (OBD_FAIL_CHECK(OBD_FAIL_TIME_IN_CHLOG_USER)) + rec->cur_time = 0; + + spin_lock(&mdd->mdd_cl.mc_lock); rec->cur_endrec = mdd->mdd_cl.mc_index; + spin_unlock(&mdd->mdd_cl.mc_lock); + + if (mask) { + /* if user will use relative mask apply it on default one */ + rec->cur_mask = CHANGELOG_DEFMASK; + rc = cfs_str2mask(mask, changelog_type2str, &rec->cur_mask, + CHANGELOG_MINMASK, CHANGELOG_ALLMASK); + if (rc) + GOTO(out_users, rc); + } else if (mdd->mdd_cl.mc_proc_mask == CHANGELOG_MINMASK) { + /* a maskless users means default mask but only if server has + * no specific mask set + */ + rec->cur_mask = CHANGELOG_DEFMASK; + } + + if (name && name[0]) { + rc = mdd_changelog_name_check(env, ctxt, mdd, name); + if (rc) + GOTO(out_users, rc); + strlcpy(rec->cur_name, name, sizeof(rec->cur_name)); + } + mdd_chlg_username(rec, user_name, sizeof(user_name)); + + rc = llog_cat_add(env, ctxt->loc_handle, &rec->cur_hdr, NULL); + if (rc) { + CWARN("%s: failed to register changelog user %s: rc = %d\n", + mdd2obd_dev(mdd)->obd_name, user_name, rc); + GOTO(out_users, rc); + } + + /* apply user mask finally */ + spin_lock(&mdd->mdd_cl.mc_user_lock); + mdd->mdd_cl.mc_current_mask |= rec->cur_mask; spin_unlock(&mdd->mdd_cl.mc_user_lock); - rc = llog_cat_add(env, ctxt->loc_handle, &rec->cur_hdr, NULL, NULL); + CDEBUG(D_IOCTL, "%s: registered changelog user '%s', mask %#x\n", + mdd2obd_dev(mdd)->obd_name, user_name, rec->cur_mask); - CDEBUG(D_IOCTL, "Registered changelog user %d\n", *id); + /* Assume we want it on since somebody registered */ + rc = mdd_changelog_on(env, mdd); + if (rc) + /* record is added, so don't decrement users on error */ + GOTO(out, rc); +out_users: + if (rc) { + spin_lock(&mdd->mdd_cl.mc_user_lock); + mdd->mdd_cl.mc_users--; + spin_unlock(&mdd->mdd_cl.mc_user_lock); + } out: - OBD_FREE_PTR(rec); - llog_ctxt_put(ctxt); - RETURN(rc); + OBD_FREE_PTR(rec); + llog_ctxt_put(ctxt); + RETURN(rc); } -struct mdd_changelog_user_data { - __u64 mcud_endrec; /**< purge record for this user */ - __u64 mcud_minrec; /**< lowest changelog recno still referenced */ - __u32 mcud_id; - __u32 mcud_minid; /**< user id with lowest rec reference */ - __u32 mcud_usercount; - unsigned int mcud_found:1; +struct mdd_changelog_recalc_mask_data { + struct mdd_device *mcrm_mdd; + __u32 mcrm_mask; }; -#define MCUD_UNREGISTER -1LL -/** Two things: - * 1. Find the smallest record everyone is willing to purge - * 2. Update the last purgeable record for this user +/** + * changelog_recalc_mask callback + * + * Is is called per each registered user and calculates combined mask of + * all registered users. + */ +static int mdd_changelog_recalc_mask_cb(const struct lu_env *env, + struct llog_handle *llh, + struct llog_rec_hdr *hdr, void *data) +{ + struct llog_changelog_user_rec2 *rec; + struct mdd_changelog_recalc_mask_data *mcrm = data; + + rec = container_of(hdr, typeof(*rec), cur_hdr); + if (rec->cur_hdr.lrh_type == CHANGELOG_USER_REC2 && rec->cur_mask) + mcrm->mcrm_mask |= rec->cur_mask; + else if (mcrm->mcrm_mdd->mdd_cl.mc_proc_mask == CHANGELOG_MINMASK) + mcrm->mcrm_mask |= CHANGELOG_DEFMASK; + + return 0; +} + +int mdd_changelog_recalc_mask(const struct lu_env *env, struct mdd_device *mdd) +{ + struct llog_ctxt *ctxt; + struct mdd_changelog_recalc_mask_data mcrm = { + .mcrm_mdd = mdd, + .mcrm_mask = mdd->mdd_cl.mc_proc_mask, + }; + int rc; + + ENTRY; + + ctxt = llog_get_context(mdd2obd_dev(mdd), + LLOG_CHANGELOG_USER_ORIG_CTXT); + if (!ctxt) + RETURN(-ENXIO); + + if (!(ctxt->loc_handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT)) + GOTO(out, rc = -ENXIO); + + rc = llog_cat_process(env, ctxt->loc_handle, + mdd_changelog_recalc_mask_cb, &mcrm, 0, 0); + if (rc < 0) + CWARN("%s: failed user changelog processing: rc = %d\n", + mdd2obd_dev(mdd)->obd_name, rc); + + spin_lock(&mdd->mdd_cl.mc_user_lock); + CDEBUG(D_INFO, "%s: recalc changelog mask: %#x -> %#x\n", + mdd2obd_dev(mdd)->obd_name, mdd->mdd_cl.mc_current_mask, + mcrm.mcrm_mask); + mdd->mdd_cl.mc_current_mask = mcrm.mcrm_mask; + spin_unlock(&mdd->mdd_cl.mc_user_lock); + + EXIT; +out: + llog_ctxt_put(ctxt); + + return rc; +} + +struct mdd_changelog_user_purge { + struct mdd_device *mcup_mdd; + __u32 mcup_id; + __u32 mcup_usercount; + __u64 mcup_minrec; + bool mcup_found; +}; + +/** + * changelog_user_purge callback + * + * Is called once per user. + * + * Check to see the user requested is available from rec. + * Truncate the changelog. + * Keep track of the total number of users (calls). */ static int mdd_changelog_user_purge_cb(const struct lu_env *env, struct llog_handle *llh, struct llog_rec_hdr *hdr, void *data) { - struct llog_changelog_user_rec *rec; - struct mdd_changelog_user_data *mcud = data; - int rc; + struct llog_changelog_user_rec2 *rec; + struct mdd_changelog_user_purge *mcup = data; + struct llog_cookie cookie; + int rc; - ENTRY; + ENTRY; - LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN); + if ((llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN) == 0) + RETURN(-ENXIO); - rec = (struct llog_changelog_user_rec *)hdr; + rec = container_of(hdr, typeof(*rec), cur_hdr); - mcud->mcud_usercount++; + mcup->mcup_usercount++; - /* If we have a new endrec for this id, use it for the following - min check instead of its old value */ - if (rec->cur_id == mcud->mcud_id) - rec->cur_endrec = max(rec->cur_endrec, mcud->mcud_endrec); + if (rec->cur_id != mcup->mcup_id) { + /* truncate to the lowest endrec that is not this user */ + mcup->mcup_minrec = min(mcup->mcup_minrec, rec->cur_endrec); + RETURN(0); + } - /* Track the minimum referenced record */ - if (mcud->mcud_minid == 0 || mcud->mcud_minrec > rec->cur_endrec) { - mcud->mcud_minid = rec->cur_id; - mcud->mcud_minrec = rec->cur_endrec; - } + /* Unregister this user */ + cookie.lgc_lgl = llh->lgh_id; + cookie.lgc_index = hdr->lrh_index; - if (rec->cur_id != mcud->mcud_id) - RETURN(0); + rc = llog_cat_cancel_records(env, llh->u.phd.phd_cat_handle, + 1, &cookie); + if (rc == 0) { + mcup->mcup_found = true; + mcup->mcup_usercount--; + spin_lock(&mcup->mcup_mdd->mdd_cl.mc_user_lock); + mcup->mcup_mdd->mdd_cl.mc_users--; + spin_unlock(&mcup->mcup_mdd->mdd_cl.mc_user_lock); + } - /* Update this user's record */ - mcud->mcud_found = 1; + RETURN(rc); +} - /* Special case: unregister this user */ - if (mcud->mcud_endrec == MCUD_UNREGISTER) { - struct llog_cookie cookie; +int mdd_changelog_user_purge(const struct lu_env *env, + struct mdd_device *mdd, __u32 id) +{ + struct mdd_changelog_user_purge mcup = { + .mcup_mdd = mdd, + .mcup_id = id, + .mcup_found = false, + .mcup_usercount = 0, + .mcup_minrec = ULLONG_MAX, + }; + struct llog_ctxt *ctxt; + int rc; - cookie.lgc_lgl = llh->lgh_id; - cookie.lgc_index = hdr->lrh_index; + ENTRY; - rc = llog_cat_cancel_records(env, llh->u.phd.phd_cat_handle, - 1, &cookie); - if (rc == 0) - mcud->mcud_usercount--; + CDEBUG(D_IOCTL, "%s: Purge request: id=%u\n", + mdd2obd_dev(mdd)->obd_name, id); - RETURN(rc); - } + ctxt = llog_get_context(mdd2obd_dev(mdd), + LLOG_CHANGELOG_USER_ORIG_CTXT); + if (ctxt == NULL || + (ctxt->loc_handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT) == 0) + GOTO(out, rc = -ENXIO); - /* Update the endrec */ - CDEBUG(D_IOCTL, "Rewriting changelog user %d endrec to "LPU64"\n", - mcud->mcud_id, rec->cur_endrec); + rc = llog_cat_process(env, ctxt->loc_handle, + mdd_changelog_user_purge_cb, &mcup, + 0, 0); - /* hdr+1 is loc of data */ - hdr->lrh_len -= sizeof(*hdr) + sizeof(struct llog_rec_tail); - rc = llog_write(env, llh, hdr, NULL, 0, (void *)(hdr + 1), - hdr->lrh_index); + OBD_FAIL_TIMEOUT(OBD_FAIL_LLOG_PURGE_DELAY, cfs_fail_val); - RETURN(rc); + if ((rc == 0) && (mcup.mcup_usercount == 0)) { + spin_lock(&mdd->mdd_cl.mc_user_lock); + if (mdd->mdd_cl.mc_users == 0) { + /* No more users; turn changelogs off */ + CDEBUG(D_IOCTL, "turning off changelogs\n"); + rc = mdd_changelog_off(env, mdd); + } + spin_unlock(&mdd->mdd_cl.mc_user_lock); + } + + if ((rc == 0) && mcup.mcup_found) { + CDEBUG(D_IOCTL, "%s: Purging changelog entries for user %d " + "record=%llu\n", + mdd2obd_dev(mdd)->obd_name, id, mcup.mcup_minrec); + /* Cancelling record 0 destroys the entire changelog, make sure + we don't do that unless we mean it. */ + if (mcup.mcup_minrec != 0 || mcup.mcup_usercount == 0) { + rc = mdd_changelog_llog_cancel(env, mdd, + mcup.mcup_minrec); + } + } else { + CWARN("%s: No changelog for user %u; rc=%d\n", + mdd2obd_dev(mdd)->obd_name, id, rc); + GOTO(out, rc = -ENOENT); + } + + CFS_RACE(CFS_FAIL_CHLOG_USER_REG_UNREG_RACE); + + EXIT; +out: + if (ctxt != NULL) + llog_ctxt_put(ctxt); + + return rc; } -static int mdd_changelog_user_purge(const struct lu_env *env, - struct mdd_device *mdd, int id, - long long endrec) +struct mdd_changelog_user_clear { + __u64 mcuc_endrec; + __u64 mcuc_minrec; + __u32 mcuc_id; + bool mcuc_flush; + struct mdd_device *mcuc_mdd; +}; + +/** + * changelog_clear callback + * + * Is called once per user. + * + * Check to see the user requested is available from rec. + * Check the oldest (smallest) record for boundary conditions. + * Truncate the changelog. + */ +static int mdd_changelog_clear_cb(const struct lu_env *env, + struct llog_handle *llh, + struct llog_rec_hdr *hdr, + void *data) { - struct mdd_changelog_user_data data; - struct llog_ctxt *ctxt; - int rc; - ENTRY; + struct llog_changelog_user_rec2 *rec; + struct mdd_changelog_user_clear *mcuc = data; + char user_name[CHANGELOG_USER_NAMELEN_FULL]; + struct mdd_device *mdd = mcuc->mcuc_mdd; + int rc; - CDEBUG(D_IOCTL, "Purge request: id=%d, endrec=%lld\n", id, endrec); + ENTRY; + + if ((llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN) == 0) + RETURN(-ENXIO); + + rec = container_of(hdr, typeof(*rec), cur_hdr); + /* Does the changelog id match the requested id? */ + if (rec->cur_id != mcuc->mcuc_id) { + mcuc->mcuc_minrec = min(mcuc->mcuc_minrec, + rec->cur_endrec); + RETURN(0); + } + + /* cur_endrec is the oldest purgeable record, make sure we're newer */ + if (rec->cur_endrec > mcuc->mcuc_endrec) { + rc = -EINVAL; + CDEBUG(D_IOCTL, + "%s: request %llu > endrec %llu for user %s: rc = %d\n", + mdd2obd_dev(mdd)->obd_name, + mcuc->mcuc_endrec, rec->cur_endrec, + mdd_chlg_username(rec, user_name, sizeof(user_name)), + rc); + RETURN(rc); + } + + /* Flag that we've met all the range and user checks. + * We now know the record to flush. + */ + rec->cur_endrec = mcuc->mcuc_endrec; + + rec->cur_time = (__u32)ktime_get_real_seconds(); + if (OBD_FAIL_CHECK(OBD_FAIL_TIME_IN_CHLOG_USER)) + rec->cur_time = 0; + + mcuc->mcuc_flush = true; - data.mcud_id = id; - data.mcud_minid = 0; - data.mcud_minrec = 0; - data.mcud_usercount = 0; - data.mcud_endrec = endrec; + CDEBUG(D_IOCTL, "%s: rewriting changelog user %s endrec = %llu\n", + mdd2obd_dev(mdd)->obd_name, + mdd_chlg_username(rec, user_name, sizeof(user_name)), + rec->cur_endrec); + + /* Update the endrec */ + rc = llog_write(env, llh, hdr, hdr->lrh_index); + + RETURN(rc); +} + +/** + * Clear a changelog up to entry specified by endrec for user id. + */ +static int mdd_changelog_clear(const struct lu_env *env, + struct mdd_device *mdd, __u32 id, + __u64 endrec) +{ + struct mdd_changelog_user_clear mcuc = { + .mcuc_id = id, + .mcuc_minrec = endrec, + .mcuc_flush = false, + .mcuc_mdd = mdd, + }; + struct llog_ctxt *ctxt; + __u64 start_rec; + int rc; + + ENTRY; + + CDEBUG(D_IOCTL, "%s: Purge request: id=%u, endrec=%llu\n", + mdd2obd_dev(mdd)->obd_name, id, endrec); + /* start_rec is the newest (largest value) entry in the changelogs*/ spin_lock(&mdd->mdd_cl.mc_lock); - endrec = mdd->mdd_cl.mc_index; + start_rec = mdd->mdd_cl.mc_index; spin_unlock(&mdd->mdd_cl.mc_lock); - if ((data.mcud_endrec == 0) || - ((data.mcud_endrec > endrec) && - (data.mcud_endrec != MCUD_UNREGISTER))) - data.mcud_endrec = endrec; - ctxt = llog_get_context(mdd2obd_dev(mdd), - LLOG_CHANGELOG_USER_ORIG_CTXT); - if (ctxt == NULL) - return -ENXIO; + if (start_rec < endrec) { + CDEBUG(D_IOCTL, "%s: Could not clear changelog, requested "\ + "address out of range\n", mdd2obd_dev(mdd)->obd_name); + RETURN(-EINVAL); + } - LASSERT(ctxt->loc_handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT); + if (endrec == 0) { + mcuc.mcuc_endrec = start_rec; + mcuc.mcuc_minrec = ULLONG_MAX; + } else { + mcuc.mcuc_endrec = endrec; + } + + ctxt = llog_get_context(mdd2obd_dev(mdd), + LLOG_CHANGELOG_USER_ORIG_CTXT); + if (ctxt == NULL || + (ctxt->loc_handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT) == 0) + GOTO(out, rc = -ENXIO); rc = llog_cat_process(env, ctxt->loc_handle, - mdd_changelog_user_purge_cb, (void *)&data, + mdd_changelog_clear_cb, (void *)&mcuc, 0, 0); - if ((rc >= 0) && (data.mcud_minrec > 0)) { - CDEBUG(D_IOCTL, "Purging changelog entries up to "LPD64 - ", referenced by "CHANGELOG_USER_PREFIX"%d\n", - data.mcud_minrec, data.mcud_minid); - rc = mdd_changelog_llog_cancel(env, mdd, data.mcud_minrec); - } else { - CWARN("Could not determine changelog records to purge; rc=%d\n", - rc); - } - llog_ctxt_put(ctxt); + if (rc == -EINVAL) { + CDEBUG(D_IOCTL, "%s: No changelog recnum <= %llu to clear\n", + mdd2obd_dev(mdd)->obd_name, (unsigned long long) endrec); + RETURN(-EINVAL); + } else if (rc < 0) { + CWARN("%s: Failure to clear the changelog for user %d: %d\n", + mdd2obd_dev(mdd)->obd_name, id, rc); + } else if (mcuc.mcuc_flush) { + /* Cancelling record 0 destroys the entire changelog, make sure + we don't do that unless we mean it. */ + if (mcuc.mcuc_minrec != 0) { + CDEBUG(D_IOCTL, "%s: Purging changelog entries up "\ + "to %llu\n", mdd2obd_dev(mdd)->obd_name, + mcuc.mcuc_minrec); + + rc = mdd_changelog_llog_cancel(env, mdd, + mcuc.mcuc_minrec); + } + } else { + CDEBUG(D_IOCTL, "%s: No entry for user %d\n", + mdd2obd_dev(mdd)->obd_name, id); + rc = -ENOENT; + } - if (!data.mcud_found) { - CWARN("No entry for user %d. Last changelog reference is " - LPD64" by changelog user %d\n", data.mcud_id, - data.mcud_minrec, data.mcud_minid); - rc = -ENOENT; - } + EXIT; +out: + if (ctxt != NULL) + llog_ctxt_put(ctxt); + + return rc; +} - if (!rc && data.mcud_usercount == 0) - /* No more users; turn changelogs off */ - rc = mdd_changelog_on(env, mdd, 0); +static int mdd_changelog_user_deregister(const struct lu_env *env, + struct mdd_device *mdd, int *id, + const char *name) +{ + struct llog_ctxt *ctxt; + struct mdd_changelog_name_check_data mcnc = { + .mcnc_name = name, + .mcnc_id = 0, + }; + int rc; - RETURN (rc); + ENTRY; + + if (name) { + ctxt = llog_get_context(mdd2obd_dev(mdd), + LLOG_CHANGELOG_USER_ORIG_CTXT); + if (!ctxt) + RETURN(-ENXIO); + + rc = llog_cat_process(env, ctxt->loc_handle, + mdd_changelog_name_check_cb, &mcnc, 0, 0); + llog_ctxt_put(ctxt); + + if (rc != -EEXIST) { + CDEBUG(D_IOCTL, "%s: no entry for username %s\n", + mdd2obd_dev(mdd)->obd_name, name); + RETURN(-ENOENT); + } + *id = mcnc.mcnc_id; + } + + /* explicitly clear changelog first, to protect from crash in + * the middle of purge that would lead to unregistered consumer + * but pending changelog entries + */ + rc = mdd_changelog_clear(env, mdd, *id, 0); + if (!rc) + rc = mdd_changelog_user_purge(env, mdd, *id); + + /* recalc changelog current mask */ + mdd_changelog_recalc_mask(env, mdd); + + RETURN(rc); } /** mdd_iocontrol @@ -1379,91 +2231,96 @@ static int mdd_changelog_user_purge(const struct lu_env *env, static int mdd_iocontrol(const struct lu_env *env, struct md_device *m, unsigned int cmd, int len, void *karg) { - struct mdd_device *mdd; - struct obd_ioctl_data *data = karg; - int rc; - ENTRY; + struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev); + struct obd_ioctl_data *data = karg; + int rc; + ENTRY; - mdd = lu2mdd_dev(&m->md_lu_dev); + /* Doesn't use obd_ioctl_data */ + switch (cmd) { + case OBD_IOC_CHANGELOG_CLEAR: { + struct changelog_setinfo *cs = karg; - /* Doesn't use obd_ioctl_data */ - switch (cmd) { - case OBD_IOC_CHANGELOG_CLEAR: { - struct changelog_setinfo *cs = karg; - rc = mdd_changelog_user_purge(env, mdd, cs->cs_id, - cs->cs_recno); - RETURN(rc); - } - case OBD_IOC_GET_MNTOPT: { - mntopt_t *mntopts = (mntopt_t *)karg; - *mntopts = mdd->mdd_dt_conf.ddp_mntopts; - RETURN(0); - } + if (unlikely(!barrier_entry(mdd->mdd_bottom))) + RETURN(-EINPROGRESS); + + rc = mdd_changelog_clear(env, mdd, cs->cs_id, + cs->cs_recno); + barrier_exit(mdd->mdd_bottom); + RETURN(rc); + } case OBD_IOC_START_LFSCK: { rc = lfsck_start(env, mdd->mdd_bottom, (struct lfsck_start_param *)karg); RETURN(rc); } case OBD_IOC_STOP_LFSCK: { - rc = lfsck_stop(env, mdd->mdd_bottom, false); + rc = lfsck_stop(env, mdd->mdd_bottom, + (struct lfsck_stop *)karg); RETURN(rc); } - case OBD_IOC_PAUSE_LFSCK: { - rc = lfsck_stop(env, mdd->mdd_bottom, true); + case OBD_IOC_QUERY_LFSCK: { + rc = lfsck_query(env, mdd->mdd_bottom, NULL, NULL, + (struct lfsck_query *)karg); RETURN(rc); } - } + } - /* Below ioctls use obd_ioctl_data */ - if (len != sizeof(*data)) { - CERROR("Bad ioctl size %d\n", len); - RETURN(-EINVAL); - } - if (data->ioc_version != OBD_IOCTL_VERSION) { - CERROR("Bad magic %x != %x\n", data->ioc_version, - OBD_IOCTL_VERSION); - RETURN(-EINVAL); - } + /* Below ioctls use obd_ioctl_data */ + if (data->ioc_version != OBD_IOCTL_VERSION) { + CERROR("Bad magic %x != %x\n", data->ioc_version, + OBD_IOCTL_VERSION); + RETURN(-EINVAL); + } - switch (cmd) { - case OBD_IOC_CHANGELOG_REG: - rc = mdd_changelog_user_register(env, mdd, &data->ioc_u32_1); - break; - case OBD_IOC_CHANGELOG_DEREG: - rc = mdd_changelog_user_purge(env, mdd, data->ioc_u32_1, - MCUD_UNREGISTER); - break; - default: - rc = -ENOTTY; - } + switch (cmd) { + case OBD_IOC_CHANGELOG_REG: + if (unlikely(!barrier_entry(mdd->mdd_bottom))) + RETURN(-EINPROGRESS); + + rc = mdd_changelog_user_register(env, mdd, &data->ioc_u32_1, + data->ioc_inlbuf1, + data->ioc_inlbuf2); + barrier_exit(mdd->mdd_bottom); + break; + case OBD_IOC_CHANGELOG_DEREG: + if (unlikely(!barrier_entry(mdd->mdd_bottom))) + RETURN(-EINPROGRESS); + + rc = mdd_changelog_user_deregister(env, mdd, &data->ioc_u32_1, + data->ioc_inlbuf1); - RETURN (rc); + barrier_exit(mdd->mdd_bottom); + break; + default: + rc = -ENOTTY; + } + + RETURN(rc); } /* type constructor/destructor: mdd_type_init, mdd_type_fini */ LU_TYPE_INIT_FINI(mdd, &mdd_thread_key); -const struct md_device_operations mdd_ops = { +static const struct md_device_operations mdd_ops = { .mdo_statfs = mdd_statfs, .mdo_root_get = mdd_root_get, - .mdo_init_capa_ctxt = mdd_init_capa_ctxt, - .mdo_update_capa_key= mdd_update_capa_key, .mdo_llog_ctxt_get = mdd_llog_ctxt_get, .mdo_iocontrol = mdd_iocontrol, - .mdo_maxeasize_get = mdd_maxeasize_get, + .mdo_dtconf_get = mdd_dtconf_get, }; -static struct lu_device_type_operations mdd_device_type_ops = { - .ldto_init = mdd_type_init, - .ldto_fini = mdd_type_fini, +static const struct lu_device_type_operations mdd_device_type_ops = { + .ldto_init = mdd_type_init, + .ldto_fini = mdd_type_fini, - .ldto_start = mdd_type_start, - .ldto_stop = mdd_type_stop, + .ldto_start = mdd_type_start, + .ldto_stop = mdd_type_stop, - .ldto_device_alloc = mdd_device_alloc, - .ldto_device_free = mdd_device_free, + .ldto_device_alloc = mdd_device_alloc, + .ldto_device_free = mdd_device_free, - .ldto_device_fini = mdd_device_fini + .ldto_device_fini = mdd_device_fini }; static struct lu_device_type mdd_device_type = { @@ -1477,57 +2334,78 @@ static struct lu_device_type mdd_device_type = { LU_KEY_INIT(mdd, struct mdd_thread_info); static void mdd_key_fini(const struct lu_context *ctx, - struct lu_context_key *key, void *data) + struct lu_context_key *key, void *data) { - struct mdd_thread_info *info = data; + struct mdd_thread_info *info = data; - lu_buf_free(&info->mti_big_buf); - lu_buf_free(&info->mti_link_buf); + lu_buf_free(&info->mdi_big_buf); + lu_buf_free(&info->mdi_link_buf); + lu_buf_free(&info->mdi_xattr_buf); + lu_buf_free(&info->mdi_chlg_buf); - OBD_FREE_PTR(info); + OBD_FREE_PTR(info); } /* context key: mdd_thread_key */ LU_CONTEXT_KEY_DEFINE(mdd, LCT_MD_THREAD); -static int __init mdd_mod_init(void) +int mdd_generic_thread_start(struct mdd_generic_thread *thread, + int (*func)(void *), void *data, char *name) { - struct lprocfs_static_vars lvars; - int rc; + struct task_struct *task; + + LASSERT(thread->mgt_init == false); + init_completion(&thread->mgt_started); + init_completion(&thread->mgt_finished); + thread->mgt_data = data; + thread->mgt_abort = false; + thread->mgt_init = true; + + task = kthread_run(func, thread, name); + if (IS_ERR(task)) { + complete(&thread->mgt_finished); + return PTR_ERR(task); + } + wait_for_completion(&thread->mgt_started); + return 0; +} - lprocfs_mdd_init_vars(&lvars); +void mdd_generic_thread_stop(struct mdd_generic_thread *thread) +{ + if (thread->mgt_init == true) { + thread->mgt_abort = true; + wait_for_completion(&thread->mgt_finished); + } +} + +static int __init mdd_init(void) +{ + int rc; rc = lu_kmem_init(mdd_caches); if (rc) return rc; - changelog_orig_logops = llog_osd_ops; - changelog_orig_logops.lop_cancel = llog_changelog_cancel; - changelog_orig_logops.lop_add = llog_cat_add_rec; - changelog_orig_logops.lop_declare_add = llog_cat_declare_add_rec; - - hsm_actions_logops = llog_osd_ops; - hsm_actions_logops.lop_add = llog_cat_add_rec; - hsm_actions_logops.lop_declare_add = llog_cat_declare_add_rec; + changelog_orig_logops = llog_common_cat_ops; + changelog_orig_logops.lop_write_rec = mdd_changelog_write_rec; - rc = class_register_type(&mdd_obd_device_ops, NULL, NULL, -#ifndef HAVE_ONLY_PROCFS_SEQ - lvars.module_vars, -#endif - LUSTRE_MDD_NAME, &mdd_device_type); + rc = class_register_type(&mdd_obd_device_ops, NULL, false, + LUSTRE_MDD_NAME, &mdd_device_type); if (rc) lu_kmem_fini(mdd_caches); return rc; } -static void __exit mdd_mod_exit(void) +static void __exit mdd_exit(void) { class_unregister_type(LUSTRE_MDD_NAME); lu_kmem_fini(mdd_caches); } -MODULE_AUTHOR("Sun Microsystems, Inc. "); -MODULE_DESCRIPTION("Lustre Meta-data Device Prototype ("LUSTRE_MDD_NAME")"); +MODULE_AUTHOR("OpenSFS, Inc. "); +MODULE_DESCRIPTION("Lustre Meta-data Device Driver ("LUSTRE_MDD_NAME")"); +MODULE_VERSION(LUSTRE_VERSION_STRING); MODULE_LICENSE("GPL"); -cfs_module(mdd, "0.1.0", mdd_mod_init, mdd_mod_exit); +module_init(mdd_init); +module_exit(mdd_exit);