#include "ofd_internal.h"
#include <obd_cksum.h>
+static int ofd_export_stats_init(struct ofd_device *ofd,
+ struct obd_export *exp, void *client_nid)
+{
+ struct obd_device *obd = ofd_obd(ofd);
+ struct nid_stat *stats;
+ int num_stats, i;
+ int rc, newnid = 0;
+
+ ENTRY;
+
+ if (obd_uuid_equals(&exp->exp_client_uuid, &obd->obd_uuid))
+ /* Self-export gets no proc entry */
+ RETURN(0);
+
+ rc = lprocfs_exp_setup(exp, client_nid, &newnid);
+ if (rc) {
+ /* Mask error for already created
+ * /proc entries */
+ if (rc == -EALREADY)
+ rc = 0;
+ RETURN(rc);
+ }
+
+ if (newnid == 0)
+ RETURN(0);
+
+ stats = exp->exp_nid_stats;
+ LASSERT(stats != NULL);
+
+ OBD_ALLOC(stats->nid_brw_stats, sizeof(struct brw_stats));
+ if (stats->nid_brw_stats == NULL)
+ GOTO(clean, rc = -ENOMEM);
+
+ for (i = 0; i < BRW_LAST; i++)
+ cfs_spin_lock_init(&stats->nid_brw_stats->hist[i].oh_lock);
+
+ rc = lprocfs_seq_create(stats->nid_proc, "brw_stats", 0644,
+ &ofd_per_nid_stats_fops, stats);
+ if (rc)
+ CWARN("Error adding the brw_stats file\n");
+
+ num_stats = (sizeof(*obd->obd_type->typ_dt_ops) / sizeof(void *)) +
+ LPROC_OFD_LAST - 1;
+
+ stats->nid_stats = lprocfs_alloc_stats(num_stats,
+ LPROCFS_STATS_FLAG_NOPERCPU);
+ if (stats->nid_stats == NULL)
+ return -ENOMEM;
+
+ lprocfs_init_ops_stats(LPROC_OFD_LAST, stats->nid_stats);
+ lprocfs_counter_init(stats->nid_stats, LPROC_OFD_READ_BYTES,
+ LPROCFS_CNTR_AVGMINMAX, "read_bytes", "bytes");
+ lprocfs_counter_init(stats->nid_stats, LPROC_OFD_WRITE_BYTES,
+ LPROCFS_CNTR_AVGMINMAX, "write_bytes", "bytes");
+
+ rc = lprocfs_register_stats(stats->nid_proc, "stats",
+ stats->nid_stats);
+ if (rc)
+ GOTO(clean, rc);
+
+ rc = lprocfs_nid_ldlm_stats_init(stats);
+ if (rc) {
+ lprocfs_free_stats(&stats->nid_stats);
+ GOTO(clean, rc);
+ }
+
+ RETURN(0);
+clean:
+ return rc;
+}
+
static int ofd_parse_connect_data(const struct lu_env *env,
struct obd_export *exp,
struct obd_connect_data *data)
else if (data->ocd_connect_flags & OBD_CONNECT_SKIP_ORPHAN)
RETURN(-EPROTO);
+ if (ofd_grant_param_supp(exp)) {
+ exp->exp_filter_data.fed_pagesize = data->ocd_blocksize;
+ /* ocd_{blocksize,inodespace} are log2 values */
+ data->ocd_blocksize = ofd->ofd_blockbits;
+ data->ocd_inodespace = ofd->ofd_dt_conf.ddp_inodespace;
+ /* ocd_grant_extent is in 1K blocks */
+ data->ocd_grant_extent = ofd->ofd_dt_conf.ddp_grant_frag >> 10;
+ }
+
+ if (exp->exp_connect_flags & OBD_CONNECT_GRANT)
+ data->ocd_grant = ofd_grant_connect(env, exp, data->ocd_grant);
+
if (data->ocd_connect_flags & OBD_CONNECT_INDEX) {
struct lr_server_data *lsd = &ofd->ofd_lut.lut_lsd;
int index = lsd->lsd_ost_index;
/* The client set in ocd_cksum_types the checksum types it
* supports. We have to mask off the algorithms that we don't
* support */
- data->ocd_cksum_types &= cksum_types_supported();
+ data->ocd_cksum_types &= cksum_types_supported_server();
if (unlikely(data->ocd_cksum_types == 0)) {
CERROR("%s: Connect with checksum support but no "
struct obd_device *obd, struct obd_uuid *cluuid,
struct obd_connect_data *data, void *localdata)
{
- int rc;
+ struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
+ int rc;
ENTRY;
ofd_info_init(env, exp);
rc = ofd_parse_connect_data(env, exp, data);
+ if (rc == 0)
+ ofd_export_stats_init(ofd, exp, localdata);
RETURN(rc);
}
if (rc)
GOTO(out, rc);
- ofd_export_stats_init(ofd, exp, localdata);
group = data->ocd_group;
if (obd->obd_replayable) {
struct tg_export_data *ted = &exp->exp_target_data;
rc = lut_client_new(env, exp);
if (rc != 0)
GOTO(out, rc);
+ ofd_export_stats_init(ofd, exp, localdata);
}
if (group == 0)
GOTO(out, rc = 0);
static int ofd_obd_disconnect(struct obd_export *exp)
{
- struct lu_env env;
- int rc;
+ struct ofd_device *ofd = ofd_dev(exp->exp_obd->obd_lu_dev);
+ struct lu_env env;
+ int rc;
ENTRY;
LASSERT(exp);
class_export_get(exp);
+ if (!(exp->exp_flags & OBD_OPT_FORCE))
+ ofd_grant_sanity_check(ofd_obd(ofd), __FUNCTION__);
+
rc = server_disconnect_export(exp);
+ ofd_grant_discard(exp);
+
rc = lu_env_init(&env, LCT_DT_THREAD);
if (rc)
RETURN(rc);
static int ofd_destroy_export(struct obd_export *exp)
{
+ struct ofd_device *ofd = ofd_dev(exp->exp_obd->obd_lu_dev);
+
if (exp->exp_filter_data.fed_pending)
CERROR("%s: cli %s/%p has %lu pending on destroyed export"
"\n", exp->exp_obd->obd_name, exp->exp_client_uuid.uuid,
ldlm_destroy_export(exp);
lut_client_free(exp);
+ ofd_fmd_cleanup(exp);
+
+ /*
+ * discard grants once we're sure no more
+ * interaction with the client is possible
+ */
+ ofd_grant_discard(exp);
+ ofd_fmd_cleanup(exp);
+
+ if (exp->exp_connect_flags & OBD_CONNECT_GRANT_SHRINK) {
+ if (ofd->ofd_tot_granted_clients > 0)
+ ofd->ofd_tot_granted_clients --;
+ }
+
+ if (!(exp->exp_flags & OBD_OPT_FORCE))
+ ofd_grant_sanity_check(exp->exp_obd, __FUNCTION__);
+
LASSERT(cfs_list_empty(&exp->exp_filter_data.fed_mod_list));
return 0;
}
CERROR("ofd update capability key failed: %d\n", rc);
} else if (KEY_IS(KEY_MDS_CONN)) {
rc = ofd_set_mds_conn(exp, val);
+ } else if (KEY_IS(KEY_GRANT_SHRINK)) {
+ struct ost_body *body = val;
+
+ /** handle grant shrink, similar to a read request */
+ ofd_grant_prepare_read(env, exp, &body->oa);
} else {
CERROR("%s: Unsupported key %s\n",
exp->exp_obd->obd_name, (char*)key);
{
int rc;
- rc = dt_statfs(env, ofd->ofd_osd, osfs);
- if (unlikely(rc))
- return rc;
-
+ cfs_spin_lock(&ofd->ofd_osfs_lock);
+ if (cfs_time_before_64(ofd->ofd_osfs_age, max_age) || max_age == 0) {
+ obd_size unstable;
+
+ /* statfs data are too old, get up-to-date one.
+ * we must be cautious here since multiple threads might be
+ * willing to update statfs data concurrently and we must
+ * grant that cached statfs data are always consistent */
+
+ if (ofd->ofd_statfs_inflight == 0)
+ /* clear inflight counter if no users, although it would
+ * take a while to overflow this 64-bit counter ... */
+ ofd->ofd_osfs_inflight = 0;
+ /* notify ofd_grant_commit() that we want to track writes
+ * completed as of now */
+ ofd->ofd_statfs_inflight++;
+ /* record value of inflight counter before running statfs to
+ * compute the diff once statfs is completed */
+ unstable = ofd->ofd_osfs_inflight;
+ cfs_spin_unlock(&ofd->ofd_osfs_lock);
+
+ /* statfs can sleep ... hopefully not for too long since we can
+ * call it fairly often as space fills up */
+ rc = dt_statfs(env, ofd->ofd_osd, osfs);
+ if (unlikely(rc))
+ return rc;
+
+ cfs_spin_lock(&ofd->ofd_grant_lock);
+ cfs_spin_lock(&ofd->ofd_osfs_lock);
+ /* calculate how much space was written while we released the
+ * ofd_osfs_lock */
+ unstable = ofd->ofd_osfs_inflight - unstable;
+ ofd->ofd_osfs_unstable = 0;
+ if (unstable) {
+ /* some writes completed while we were running statfs
+ * w/o the ofd_osfs_lock. Those ones got added to
+ * the cached statfs data that we are about to crunch.
+ * Take them into account in the new statfs data */
+ osfs->os_bavail -= min_t(obd_size, osfs->os_bavail,
+ unstable >> ofd->ofd_blockbits);
+ /* However, we don't really know if those writes got
+ * accounted in the statfs call, so tell
+ * ofd_grant_space_left() there is some uncertainty
+ * on the accounting of those writes.
+ * The purpose is to prevent spurious error messages in
+ * ofd_grant_space_left() since those writes might be
+ * accounted twice. */
+ ofd->ofd_osfs_unstable += unstable;
+ }
+ /* similarly, there is some uncertainty on write requests
+ * between prepare & commit */
+ ofd->ofd_osfs_unstable += ofd->ofd_tot_pending;
+ cfs_spin_unlock(&ofd->ofd_grant_lock);
+
+ /* finally udpate cached statfs data */
+ ofd->ofd_osfs = *osfs;
+ ofd->ofd_osfs_age = cfs_time_current_64();
+
+ ofd->ofd_statfs_inflight--; /* stop tracking */
+ if (ofd->ofd_statfs_inflight == 0)
+ ofd->ofd_osfs_inflight = 0;
+ cfs_spin_unlock(&ofd->ofd_osfs_lock);
+
+ if (from_cache)
+ *from_cache = 0;
+ } else {
+ /* use cached statfs data */
+ *osfs = ofd->ofd_osfs;
+ cfs_spin_unlock(&ofd->ofd_osfs_lock);
+ if (from_cache)
+ *from_cache = 1;
+ }
return 0;
}
static int ofd_statfs(const struct lu_env *env, struct obd_export *exp,
struct obd_statfs *osfs, __u64 max_age, __u32 flags)
{
+ struct obd_device *obd = class_exp2obd(exp);
struct ofd_device *ofd = ofd_dev(exp->exp_obd->obd_lu_dev);
int rc;
if (unlikely(rc))
GOTO(out, rc);
+ /* at least try to account for cached pages. its still racy and
+ * might be under-reporting if clients haven't announced their
+ * caches with brw recently */
+
+ CDEBUG(D_SUPER | D_CACHE, "blocks cached "LPU64" granted "LPU64
+ " pending "LPU64" free "LPU64" avail "LPU64"\n",
+ ofd->ofd_tot_dirty, ofd->ofd_tot_granted, ofd->ofd_tot_pending,
+ osfs->os_bfree << ofd->ofd_blockbits,
+ osfs->os_bavail << ofd->ofd_blockbits);
+
+ osfs->os_bavail -= min_t(obd_size, osfs->os_bavail,
+ ((ofd->ofd_tot_dirty + ofd->ofd_tot_pending +
+ osfs->os_bsize - 1) >> ofd->ofd_blockbits));
+
+ /* The QoS code on the MDS does not care about space reserved for
+ * precreate, so take it out. */
+ if (exp->exp_connect_flags & OBD_CONNECT_MDS) {
+ struct filter_export_data *fed;
+
+ fed = &obd->obd_self_export->exp_filter_data;
+ osfs->os_bavail -= min_t(obd_size, osfs->os_bavail,
+ fed->fed_grant >> ofd->ofd_blockbits);
+ }
+
+ ofd_grant_sanity_check(obd, __FUNCTION__);
+ CDEBUG(D_CACHE, LPU64" blocks: "LPU64" free, "LPU64" avail; "
+ LPU64" objects: "LPU64" free; state %x\n",
+ osfs->os_blocks, osfs->os_bfree, osfs->os_bavail,
+ osfs->os_files, osfs->os_ffree, osfs->os_state);
+
if (OBD_FAIL_CHECK_VALUE(OBD_FAIL_OST_ENOSPC,
ofd->ofd_lut.lut_lsd.lsd_ost_index))
osfs->os_bfree = osfs->os_bavail = 2;
if (OBD_FAIL_CHECK_VALUE(OBD_FAIL_OST_ENOINO,
ofd->ofd_lut.lut_lsd.lsd_ost_index))
osfs->os_ffree = 0;
+
+ /* OS_STATE_READONLY can be set by OSD already */
+ if (ofd->ofd_raid_degraded)
+ osfs->os_state |= OS_STATE_DEGRADED;
+
+ if (obd->obd_self_export != exp && ofd_grant_compat(exp, ofd)) {
+ /* clients which don't support OBD_CONNECT_GRANT_PARAM
+ * should not see a block size > page size, otherwise
+ * cl_lost_grant goes mad. Therefore, we emulate a 4KB (=2^12)
+ * block size which is the biggest block size known to work
+ * with all client's page size. */
+ osfs->os_blocks <<= ofd->ofd_blockbits - COMPAT_BSIZE_SHIFT;
+ osfs->os_bfree <<= ofd->ofd_blockbits - COMPAT_BSIZE_SHIFT;
+ osfs->os_bavail <<= ofd->ofd_blockbits - COMPAT_BSIZE_SHIFT;
+ osfs->os_bsize = 1 << COMPAT_BSIZE_SHIFT;
+ }
+
EXIT;
out:
return rc;
git://git.whamcloud.com / fs / lustre-release.git / blobdiff