Author: mav Date: Wed Oct 3 15:34:49 2018 New Revision: 339151 URL: https://svnweb.freebsd.org/changeset/base/339151
Log: MFC r337970: 9738 Fix third block copy allocations, broken at 9112. Use METASLAB_WEIGHT_CLAIM weight to allocate tertiary blocks. Previous use of METASLAB_WEIGHT_SECONDARY for that caused errors later on metaslab_activate_allocator() call, leading to massive load of unneeded metaslabs and write freezes. Reviewed by: Paul Dagnelie <[email protected]> Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/metaslab.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/metaslab.c ============================================================================== --- stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/metaslab.c Wed Oct 3 15:33:20 2018 (r339150) +++ stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/metaslab.c Wed Oct 3 15:34:49 2018 (r339151) @@ -3094,7 +3094,6 @@ metaslab_group_alloc_normal(metaslab_group_t *mg, zio_ metaslab_t *msp = NULL; uint64_t offset = -1ULL; uint64_t activation_weight; - boolean_t tertiary = B_FALSE; activation_weight = METASLAB_WEIGHT_PRIMARY; for (int i = 0; i < d; i++) { @@ -3103,7 +3102,7 @@ metaslab_group_alloc_normal(metaslab_group_t *mg, zio_ activation_weight = METASLAB_WEIGHT_SECONDARY; } else if (activation_weight == METASLAB_WEIGHT_SECONDARY && DVA_GET_VDEV(&dva[i]) == mg->mg_vd->vdev_id) { - tertiary = B_TRUE; + activation_weight = METASLAB_WEIGHT_CLAIM; break; } } @@ -3112,10 +3111,8 @@ metaslab_group_alloc_normal(metaslab_group_t *mg, zio_ * If we don't have enough metaslabs active to fill the entire array, we * just use the 0th slot. */ - if (mg->mg_ms_ready < mg->mg_allocators * 2) { - tertiary = B_FALSE; + if (mg->mg_ms_ready < mg->mg_allocators * 3) allocator = 0; - } ASSERT3U(mg->mg_vd->vdev_ms_count, >=, 2); @@ -3141,7 +3138,7 @@ metaslab_group_alloc_normal(metaslab_group_t *mg, zio_ msp = mg->mg_primaries[allocator]; was_active = B_TRUE; } else if (activation_weight == METASLAB_WEIGHT_SECONDARY && - mg->mg_secondaries[allocator] != NULL && !tertiary) { + mg->mg_secondaries[allocator] != NULL) { msp = mg->mg_secondaries[allocator]; was_active = B_TRUE; } else { @@ -3184,7 +3181,8 @@ metaslab_group_alloc_normal(metaslab_group_t *mg, zio_ continue; } - if (msp->ms_weight & METASLAB_WEIGHT_CLAIM) { + if (msp->ms_weight & METASLAB_WEIGHT_CLAIM && + activation_weight != METASLAB_WEIGHT_CLAIM) { metaslab_passivate(msp, msp->ms_weight & ~METASLAB_WEIGHT_CLAIM); mutex_exit(&msp->ms_lock); _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "[email protected]"
