diff options
Diffstat (limited to 'module/zfs/zil.c')
| -rw-r--r-- | module/zfs/zil.c | 63 |
1 files changed, 61 insertions, 2 deletions
diff --git a/module/zfs/zil.c b/module/zfs/zil.c index fb0503628..9ab02d70c 100644 --- a/module/zfs/zil.c +++ b/module/zfs/zil.c @@ -66,6 +66,27 @@ */ /* + * See zil.h for more information about these fields. + */ +zil_stats_t zil_stats = { + { "zil_commit_count", KSTAT_DATA_UINT64 }, + { "zil_commit_writer_count", KSTAT_DATA_UINT64 }, + { "zil_itx_count", KSTAT_DATA_UINT64 }, + { "zil_itx_indirect_count", KSTAT_DATA_UINT64 }, + { "zil_itx_indirect_bytes", KSTAT_DATA_UINT64 }, + { "zil_itx_copied_count", KSTAT_DATA_UINT64 }, + { "zil_itx_copied_bytes", KSTAT_DATA_UINT64 }, + { "zil_itx_needcopy_count", KSTAT_DATA_UINT64 }, + { "zil_itx_needcopy_bytes", KSTAT_DATA_UINT64 }, + { "zil_itx_metaslab_normal_count", KSTAT_DATA_UINT64 }, + { "zil_itx_metaslab_normal_bytes", KSTAT_DATA_UINT64 }, + { "zil_itx_metaslab_slog_count", KSTAT_DATA_UINT64 }, + { "zil_itx_metaslab_slog_bytes", KSTAT_DATA_UINT64 }, +}; + +static kstat_t *zil_ksp; + +/* * This global ZIL switch affects all pools */ int zil_replay_disable = 0; /* disable intent logging replay */ @@ -879,6 +900,7 @@ zil_lwb_write_start(zilog_t *zilog, lwb_t *lwb) uint64_t txg; uint64_t zil_blksz, wsz; int i, error; + boolean_t use_slog; if (BP_GET_CHECKSUM(&lwb->lwb_blk) == ZIO_CHECKSUM_ZILOG2) { zilc = (zil_chain_t *)lwb->lwb_buf; @@ -935,8 +957,19 @@ zil_lwb_write_start(zilog_t *zilog, lwb_t *lwb) BP_ZERO(bp); /* pass the old blkptr in order to spread log blocks across devs */ + use_slog = USE_SLOG(zilog); error = zio_alloc_zil(spa, txg, bp, &lwb->lwb_blk, zil_blksz, - USE_SLOG(zilog)); + use_slog); + if (use_slog) + { + ZIL_STAT_BUMP(zil_itx_metaslab_slog_count); + ZIL_STAT_INCR(zil_itx_metaslab_slog_bytes, lwb->lwb_nused); + } + else + { + ZIL_STAT_BUMP(zil_itx_metaslab_normal_count); + ZIL_STAT_INCR(zil_itx_metaslab_normal_bytes, lwb->lwb_nused); + } if (!error) { ASSERT3U(bp->blk_birth, ==, txg); bp->blk_cksum = lwb->lwb_blk.blk_cksum; @@ -1022,13 +1055,18 @@ zil_lwb_commit(zilog_t *zilog, itx_t *itx, lwb_t *lwb) lrc = (lr_t *)lr_buf; lrw = (lr_write_t *)lrc; + ZIL_STAT_BUMP(zil_itx_count); + /* * If it's a write, fetch the data or get its blkptr as appropriate. */ if (lrc->lrc_txtype == TX_WRITE) { if (txg > spa_freeze_txg(zilog->zl_spa)) txg_wait_synced(zilog->zl_dmu_pool, txg); - if (itx->itx_wr_state != WR_COPIED) { + if (itx->itx_wr_state == WR_COPIED) { + ZIL_STAT_BUMP(zil_itx_copied_count); + ZIL_STAT_INCR(zil_itx_copied_bytes, lrw->lr_length); + } else { char *dbuf; int error; @@ -1036,9 +1074,13 @@ zil_lwb_commit(zilog_t *zilog, itx_t *itx, lwb_t *lwb) ASSERT(itx->itx_wr_state == WR_NEED_COPY); dbuf = lr_buf + reclen; lrw->lr_common.lrc_reclen += dlen; + ZIL_STAT_BUMP(zil_itx_needcopy_count); + ZIL_STAT_INCR(zil_itx_needcopy_bytes, lrw->lr_length); } else { ASSERT(itx->itx_wr_state == WR_INDIRECT); dbuf = NULL; + ZIL_STAT_BUMP(zil_itx_indirect_count); + ZIL_STAT_INCR(zil_itx_indirect_bytes, lrw->lr_length); } error = zilog->zl_get_data( itx->itx_private, lrw, dbuf, lwb->lwb_zio); @@ -1497,6 +1539,8 @@ zil_commit(zilog_t *zilog, uint64_t foid) if (zilog->zl_sync == ZFS_SYNC_DISABLED) return; + ZIL_STAT_BUMP(zil_commit_count); + /* move the async itxs for the foid to the sync queues */ zil_async_to_sync(zilog, foid); @@ -1512,6 +1556,7 @@ zil_commit(zilog_t *zilog, uint64_t foid) zilog->zl_next_batch++; zilog->zl_writer = B_TRUE; + ZIL_STAT_BUMP(zil_commit_writer_count); zil_commit_writer(zilog); zilog->zl_com_batch = mybatch; zilog->zl_writer = B_FALSE; @@ -1600,12 +1645,26 @@ zil_init(void) { zil_lwb_cache = kmem_cache_create("zil_lwb_cache", sizeof (struct lwb), 0, NULL, NULL, NULL, NULL, NULL, 0); + + zil_ksp = kstat_create("zfs", 0, "zil", "misc", + KSTAT_TYPE_NAMED, sizeof(zil_stats) / sizeof(kstat_named_t), + KSTAT_FLAG_VIRTUAL); + + if (zil_ksp != NULL) { + zil_ksp->ks_data = &zil_stats; + kstat_install(zil_ksp); + } } void zil_fini(void) { kmem_cache_destroy(zil_lwb_cache); + + if (zil_ksp != NULL) { + kstat_delete(zil_ksp); + zil_ksp = NULL; + } } void |