*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright (c) 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/
#define DEBUG_SUBSYSTEM S_MDS
#include <linux/module.h>
+#include <linux/kthread.h>
#include <obd_class.h>
+#include <uapi/linux/lustre/lustre_ioctl.h>
#include <lustre_mds.h>
#include <obd_support.h>
#include <lu_object.h>
-#include <lustre_param.h>
+#include <uapi/linux/lustre/lustre_param.h>
#include <lustre_fid.h>
+#include <lustre_nodemap.h>
+#include <lustre_barrier.h>
#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 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 */
+ mdd->mdd_cl.mc_mask = CHANGELOG_DEFMASK;
+ 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 = 0;
+ /* 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;
dt_conf_get(env, mdd->mdd_child, &mdd->mdd_dt_conf);
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;
}
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));
mdd->mdd_cl.mc_index = rec->cr.cr_index;
return LLOG_PROC_BREAK;
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 = (struct mdd_device *)data;
+ struct llog_changelog_user_rec *rec =
+ (struct llog_changelog_user_rec *)hdr;
- LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
- LASSERT(rec->cur_hdr.lrh_type == CHANGELOG_USER_REC);
+ LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
+ LASSERT(rec->cur_hdr.lrh_type == CHANGELOG_USER_REC);
- 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));
+ CDEBUG(D_INFO, "seeing user at index %d/%d id=%d endrec=%llu"
+ " in log "DFID"\n", hdr->lrh_index, rec->cur_hdr.lrh_index,
+ rec->cur_id, 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_endrec > mdd->mdd_cl.mc_index)
mdd->mdd_cl.mc_index = rec->cur_endrec;
spin_unlock(&mdd->mdd_cl.mc_user_lock);
return LLOG_PROC_BREAK;
}
+struct changelog_orphan_data {
+ __u64 index;
+ struct mdd_device *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 mdd_device *mdd = ((struct changelog_orphan_data *)data)->mdd;
+ struct llog_changelog_rec *rec = container_of(hdr,
+ struct llog_changelog_rec,
+ cr_hdr);
+
+ LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
+
+ 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: seeing 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));
+
+ ((struct changelog_orphan_data *)data)->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 mdd_device *mdd = ((struct changelog_orphan_data *)data)->mdd;
+ struct llog_changelog_user_rec *rec = container_of(hdr,
+ struct llog_changelog_user_rec,
+ cur_hdr);
+
+ LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
+
+ if (rec->cur_hdr.lrh_type != CHANGELOG_USER_REC) {
+ CWARN("%s: invalid user 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: seeing user at index %d/%d id=%d endrec=%llu in "
+ "log "DFID"\n", mdd2obd_dev(mdd)->obd_name, hdr->lrh_index,
+ rec->cur_hdr.lrh_index, rec->cur_id, rec->cur_endrec,
+ PFID(&llh->lgh_id.lgl_oi.oi_fid));
+
+ if (((struct changelog_orphan_data *)data)->index == 0 ||
+ rec->cur_endrec < ((struct changelog_orphan_data *)data)->index)
+ ((struct changelog_orphan_data *)data)->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;
+ struct changelog_cancel_cookie *cl_cookie =
+ (struct changelog_cancel_cookie *)data;
int rc;
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);
static int llog_changelog_cancel(const struct lu_env *env,
struct llog_ctxt *ctxt,
- struct llog_cookie *cookies, int flags)
+ struct changelog_cancel_cookie *cookie)
{
struct llog_handle *cathandle = ctxt->loc_handle;
int rc;
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;
+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;
-int mdd_changelog_on(const struct lu_env *env, struct mdd_device *mdd, int on);
+ 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;
+ struct changelog_orphan_data changelog_orphan = { .index = 0,
+ .mdd = mdd },
+ user_orphan = { .index = 0,
+ .mdd = mdd };
int rc;
ENTRY;
OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
obd->obd_lvfs_ctxt.dt = mdd->mdd_bottom;
rc = llog_setup(env, obd, &obd->obd_olg, LLOG_CHANGELOG_ORIG_CTXT,
- obd, &changelog_orig_logops);
+ obd, &llog_common_cat_ops);
if (rc) {
CERROR("%s: changelog llog setup failed: rc = %d\n",
obd->obd_name, rc);
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);
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 */
rc = llog_setup(env, obd, &obd->obd_olg, LLOG_CHANGELOG_USER_ORIG_CTXT,
- obd, &changelog_orig_logops);
+ obd, &llog_common_cat_ops);
if (rc) {
CERROR("%s: changelog users llog setup failed: rc = %d\n",
obd->obd_name, rc);
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);
/* 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,
+ &changelog_orphan, 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(changelog_orphan.index < user_orphan.index)) {
+ struct changelog_cancel_cookie cl_cookie = {
+ .endrec = user_orphan.index,
+ .mdd = mdd,
+ };
+
+ CWARN("%s : orphan changelog records found, starting from "
+ "index %llu to index %llu, being cleared now\n",
+ obd->obd_name, changelog_orphan.index, user_orphan.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);
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",
mdd->mdd_cl.mc_flags = 0;
+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);
+ schedule_timeout(usecs_to_jiffies(10));
+ /* 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) {
llog_cat_close(env, ctxt->loc_handle);
}
}
-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);
/* 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, (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;
ENTRY;
if (mdd->mdd_cl.mc_mask & (1 << CL_MARK)) {
- mdd->mdd_cl.mc_starttime = cfs_time_current_64();
+ mdd->mdd_cl.mc_starttime = ktime_get();
RETURN(0);
}
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);
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);
}
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,
+ CWARN("%s: Trying to lookup invalid FID [%s] in %s/%s, FID "
+ "format should be "DFID"\n", mdd2obd_dev(mdd)->obd_name,
+ lname->ln_name, dot_lustre_name, mdd_obf_dir_name,
(__u64)FID_SEQ_NORMAL, 1, 0);
GOTO(out, rc = -EINVAL);
}
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);
+ CWARN("%s: Trying to lookup invalid FID "DFID" in %s/%s, "
+ "sequence should be >= %#llx or within [%#llx,"
+ "%#llx].\n", mdd2obd_dev(mdd)->obd_name, PFID(f),
+ dot_lustre_name, mdd_obf_dir_name, (__u64)FID_SEQ_NORMAL,
+ (__u64)FID_SEQ_IGIF, (__u64)FID_SEQ_IGIF_MAX);
GOTO(out, rc = -EINVAL);
}
/* 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));
return -EPERM;
}
+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 struct md_dir_operations mdd_obf_dir_ops = {
.mdo_lookup = obf_lookup,
- .mdo_create = mdd_dummy_create,
+ .mdo_create = mdd_obf_create,
.mdo_rename = mdd_dummy_rename,
.mdo_link = mdd_dummy_link,
.mdo_unlink = mdd_dummy_unlink
return rc;
}
-
-static struct llog_operations hsm_actions_logops;
-
/**
* set llog methods and create LLOG_AGENT_ORIG_CTXT llog
* object in obd_device
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);
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);
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);
+ 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;
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);
}
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;
*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);
- return 0;
+ dt_object_put(env, parent);
+ return rc;
}
static int mdd_lfsck_out_notify(const struct lu_env *env, void *data,
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 lu_fid fid;
+ int rc;
ENTRY;
mdd2obd_dev(mdd)->obd_name, rc);
GOTO(out_los, rc);
}
-
- rc = mdd_compat_fixes(env, mdd);
- if (rc != 0)
- GOTO(out_dot, 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);
if (rc != 0)
GOTO(out_changelog, rc);
+ 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_dot_lustre_cleanup(env, mdd);
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,
}
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;
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 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 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,
};
static int mdd_changelog_user_register(const struct lu_env *env,
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;
GOTO(out, rc = -EOVERFLOW);
}
*id = rec->cur_id = ++mdd->mdd_cl.mc_lastuser;
+ mdd->mdd_cl.mc_users++;
rec->cur_endrec = mdd->mdd_cl.mc_index;
+
+ rec->cur_time = (__u32)ktime_get_real_seconds();
+ if (OBD_FAIL_CHECK(OBD_FAIL_TIME_IN_CHLOG_USER))
+ rec->cur_time = 0;
+
spin_unlock(&mdd->mdd_cl.mc_user_lock);
- rc = llog_cat_add(env, ctxt->loc_handle, &rec->cur_hdr, NULL, NULL);
+ rc = llog_cat_add(env, ctxt->loc_handle, &rec->cur_hdr, NULL);
+ if (rc) {
+ CWARN("%s: Failed to register changelog user %d: rc=%d\n",
+ mdd2obd_dev(mdd)->obd_name, *id, rc);
+ spin_lock(&mdd->mdd_cl.mc_user_lock);
+ mdd->mdd_cl.mc_users--;
+ spin_unlock(&mdd->mdd_cl.mc_user_lock);
+ GOTO(out, rc);
+ }
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)
+ GOTO(out, rc);
+
out:
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_user_purge {
+ struct mdd_device *mcup_mdd;
+ __u32 mcup_id;
+ __u32 mcup_usercount;
+ __u64 mcup_minrec;
+ bool mcup_found;
};
-#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_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;
+ 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, struct llog_changelog_user_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;
+};
+
+/**
+ * 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_rec *rec;
+ struct mdd_changelog_user_clear *mcuc = data;
+ int rc;
+
+ ENTRY;
+
+ if ((llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN) == 0)
+ RETURN(-ENXIO);
+
+ rec = container_of(hdr, struct llog_changelog_user_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) {
+ CDEBUG(D_IOCTL, "Request %llu out of range: %llu\n",
+ mcuc->mcuc_endrec, rec->cur_endrec);
+ RETURN(-EINVAL);
+ }
- CDEBUG(D_IOCTL, "Purge request: id=%d, endrec=%lld\n", id, endrec);
+ /* Flag that we've met all the range and user checks.
+ * We now know the record to flush.
+ */
+ rec->cur_endrec = mcuc->mcuc_endrec;
- data.mcud_id = id;
- data.mcud_minid = 0;
- data.mcud_minrec = 0;
- data.mcud_usercount = 0;
- data.mcud_endrec = 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;
+
+ CDEBUG(D_IOCTL, "Rewriting changelog user %u endrec to %llu\n",
+ mcuc->mcuc_id, 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,
+ };
+ 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 (!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;
- }
+ 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 {
+ CWARN("%s: No entry for user %d\n",
+ mdd2obd_dev(mdd)->obd_name, id);
+ rc = -ENOENT;
+ }
- if (!rc && data.mcud_usercount == 0)
- /* No more users; turn changelogs off */
- rc = mdd_changelog_on(env, mdd, 0);
+ EXIT;
+out:
+ if (ctxt != NULL)
+ llog_ctxt_put(ctxt);
- RETURN (rc);
+ return rc;
}
/** mdd_iocontrol
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);
(struct lfsck_stop *)karg);
RETURN(rc);
}
- }
+ 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 (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);
+ }
- 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);
+ barrier_exit(mdd->mdd_bottom);
+ break;
+ case OBD_IOC_CHANGELOG_DEREG:
+ if (unlikely(!barrier_entry(mdd->mdd_bottom)))
+ RETURN(-EINPROGRESS);
+
+ /* 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, data->ioc_u32_1, 0);
+ if (!rc)
+ rc = mdd_changelog_user_purge(env,
+ mdd, data->ioc_u32_1);
+
+ barrier_exit(mdd->mdd_bottom);
+ break;
+ default:
+ rc = -ENOTTY;
+ }
- RETURN (rc);
+ 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 = {
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->mti_xattr_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;
-
- 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, NULL,
+ 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. <http://www.lustre.org/>");
-MODULE_DESCRIPTION("Lustre Meta-data Device Prototype ("LUSTRE_MDD_NAME")");
+MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
+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);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff