Author: avg
Date: Mon Feb 17 17:12:11 2014
New Revision: 262095
URL: http://svnweb.freebsd.org/changeset/base/262095
Log:
MFC r258717: MFV r258371,r258372: 4101 metaslab_debug should allow for
fine-grained control
Added:
stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/range_tree.c
- copied unchanged from r258717,
head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/range_tree.c
stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/space_reftree.c
- copied unchanged from r258717,
head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/space_reftree.c
stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/range_tree.h
- copied unchanged from r258717,
head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/range_tree.h
stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/space_reftree.h
- copied unchanged from r258717,
head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/space_reftree.h
Modified:
stable/8/cddl/contrib/opensolaris/cmd/zdb/zdb.c
stable/8/cddl/contrib/opensolaris/cmd/zpool/zpool-features.7
stable/8/cddl/contrib/opensolaris/cmd/ztest/ztest.c
stable/8/sys/cddl/contrib/opensolaris/common/zfs/zfeature_common.c
stable/8/sys/cddl/contrib/opensolaris/common/zfs/zfeature_common.h
stable/8/sys/cddl/contrib/opensolaris/uts/common/Makefile.files
stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dnode.c
stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/metaslab.c
stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c
stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c
stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/space_map.c
stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/metaslab.h
stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/metaslab_impl.h
stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/space_map.h
stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/vdev_impl.h
stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zfeature.h
stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev.c
stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_label.c
stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfeature.c
Directory Properties:
stable/8/cddl/contrib/opensolaris/ (props changed)
stable/8/cddl/contrib/opensolaris/cmd/zfs/ (props changed)
stable/8/cddl/contrib/opensolaris/lib/libzfs/ (props changed)
stable/8/sys/ (props changed)
stable/8/sys/cddl/ (props changed)
stable/8/sys/cddl/contrib/opensolaris/ (props changed)
Modified: stable/8/cddl/contrib/opensolaris/cmd/zdb/zdb.c
==============================================================================
--- stable/8/cddl/contrib/opensolaris/cmd/zdb/zdb.c Mon Feb 17 17:11:58
2014 (r262094)
+++ stable/8/cddl/contrib/opensolaris/cmd/zdb/zdb.c Mon Feb 17 17:12:11
2014 (r262095)
@@ -242,7 +242,7 @@ const char histo_stars[] = "************
const int histo_width = sizeof (histo_stars) - 1;
static void
-dump_histogram(const uint64_t *histo, int size)
+dump_histogram(const uint64_t *histo, int size, int offset)
{
int i;
int minidx = size - 1;
@@ -263,7 +263,7 @@ dump_histogram(const uint64_t *histo, in
for (i = minidx; i <= maxidx; i++) {
(void) printf("\t\t\t%3u: %6llu %s\n",
- i, (u_longlong_t)histo[i],
+ i + offset, (u_longlong_t)histo[i],
&histo_stars[(max - histo[i]) * histo_width / max]);
}
}
@@ -316,19 +316,19 @@ dump_zap_stats(objset_t *os, uint64_t ob
(u_longlong_t)zs.zs_salt);
(void) printf("\t\tLeafs with 2^n pointers:\n");
- dump_histogram(zs.zs_leafs_with_2n_pointers, ZAP_HISTOGRAM_SIZE);
+ dump_histogram(zs.zs_leafs_with_2n_pointers, ZAP_HISTOGRAM_SIZE, 0);
(void) printf("\t\tBlocks with n*5 entries:\n");
- dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE);
+ dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE, 0);
(void) printf("\t\tBlocks n/10 full:\n");
- dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE);
+ dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE, 0);
(void) printf("\t\tEntries with n chunks:\n");
- dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE);
+ dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE, 0);
(void) printf("\t\tBuckets with n entries:\n");
- dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE);
+ dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE, 0);
}
/*ARGSUSED*/
@@ -517,26 +517,85 @@ dump_zpldir(objset_t *os, uint64_t objec
zap_cursor_fini(&zc);
}
+int
+get_dtl_refcount(vdev_t *vd)
+{
+ int refcount = 0;
+
+ if (vd->vdev_ops->vdev_op_leaf) {
+ space_map_t *sm = vd->vdev_dtl_sm;
+
+ if (sm != NULL &&
+ sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
+ return (1);
+ return (0);
+ }
+
+ for (int c = 0; c < vd->vdev_children; c++)
+ refcount += get_dtl_refcount(vd->vdev_child[c]);
+ return (refcount);
+}
+
+int
+get_metaslab_refcount(vdev_t *vd)
+{
+ int refcount = 0;
+
+ if (vd->vdev_top == vd) {
+ for (int m = 0; m < vd->vdev_ms_count; m++) {
+ space_map_t *sm = vd->vdev_ms[m]->ms_sm;
+
+ if (sm != NULL &&
+ sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
+ refcount++;
+ }
+ }
+ for (int c = 0; c < vd->vdev_children; c++)
+ refcount += get_metaslab_refcount(vd->vdev_child[c]);
+
+ return (refcount);
+}
+
+static int
+verify_spacemap_refcounts(spa_t *spa)
+{
+ int expected_refcount, actual_refcount;
+
+ expected_refcount = spa_feature_get_refcount(spa,
+ &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM]);
+ actual_refcount = get_dtl_refcount(spa->spa_root_vdev);
+ actual_refcount += get_metaslab_refcount(spa->spa_root_vdev);
+
+ if (expected_refcount != actual_refcount) {
+ (void) printf("space map refcount mismatch: expected %d != "
+ "actual %d\n", expected_refcount, actual_refcount);
+ return (2);
+ }
+ return (0);
+}
+
static void
-dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm)
+dump_spacemap(objset_t *os, space_map_t *sm)
{
uint64_t alloc, offset, entry;
- uint8_t mapshift = sm->sm_shift;
- uint64_t mapstart = sm->sm_start;
char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
"INVALID", "INVALID", "INVALID", "INVALID" };
- if (smo->smo_object == 0)
+ if (sm == NULL)
return;
/*
* Print out the freelist entries in both encoded and decoded form.
*/
alloc = 0;
- for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) {
- VERIFY3U(0, ==, dmu_read(os, smo->smo_object, offset,
+ for (offset = 0; offset < space_map_length(sm);
+ offset += sizeof (entry)) {
+ uint8_t mapshift = sm->sm_shift;
+
+ VERIFY0(dmu_read(os, space_map_object(sm), offset,
sizeof (entry), &entry, DMU_READ_PREFETCH));
if (SM_DEBUG_DECODE(entry)) {
+
(void) printf("\t [%6llu] %s: txg %llu, pass %llu\n",
(u_longlong_t)(offset / sizeof (entry)),
ddata[SM_DEBUG_ACTION_DECODE(entry)],
@@ -548,10 +607,10 @@ dump_spacemap(objset_t *os, space_map_ob
(u_longlong_t)(offset / sizeof (entry)),
SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
(u_longlong_t)((SM_OFFSET_DECODE(entry) <<
- mapshift) + mapstart),
+ mapshift) + sm->sm_start),
(u_longlong_t)((SM_OFFSET_DECODE(entry) <<
- mapshift) + mapstart + (SM_RUN_DECODE(entry) <<
- mapshift)),
+ mapshift) + sm->sm_start +
+ (SM_RUN_DECODE(entry) << mapshift)),
(u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
if (SM_TYPE_DECODE(entry) == SM_ALLOC)
alloc += SM_RUN_DECODE(entry) << mapshift;
@@ -559,10 +618,10 @@ dump_spacemap(objset_t *os, space_map_ob
alloc -= SM_RUN_DECODE(entry) << mapshift;
}
}
- if (alloc != smo->smo_alloc) {
+ if (alloc != space_map_allocated(sm)) {
(void) printf("space_map_object alloc (%llu) INCONSISTENT "
"with space map summary (%llu)\n",
- (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc);
+ (u_longlong_t)space_map_allocated(sm), (u_longlong_t)alloc);
}
}
@@ -570,15 +629,17 @@ static void
dump_metaslab_stats(metaslab_t *msp)
{
char maxbuf[32];
- space_map_t *sm = msp->ms_map;
- avl_tree_t *t = sm->sm_pp_root;
- int free_pct = sm->sm_space * 100 / sm->sm_size;
+ range_tree_t *rt = msp->ms_tree;
+ avl_tree_t *t = &msp->ms_size_tree;
+ int free_pct = range_tree_space(rt) * 100 / msp->ms_size;
- zdb_nicenum(space_map_maxsize(sm), maxbuf);
+ zdb_nicenum(metaslab_block_maxsize(msp), maxbuf);
(void) printf("\t %25s %10lu %7s %6s %4s %4d%%\n",
"segments", avl_numnodes(t), "maxsize", maxbuf,
"freepct", free_pct);
+ (void) printf("\tIn-memory histogram:\n");
+ dump_histogram(rt->rt_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
}
static void
@@ -586,33 +647,45 @@ dump_metaslab(metaslab_t *msp)
{
vdev_t *vd = msp->ms_group->mg_vd;
spa_t *spa = vd->vdev_spa;
- space_map_t *sm = msp->ms_map;
- space_map_obj_t *smo = &msp->ms_smo;
+ space_map_t *sm = msp->ms_sm;
char freebuf[32];
- zdb_nicenum(sm->sm_size - smo->smo_alloc, freebuf);
+ zdb_nicenum(msp->ms_size - space_map_allocated(sm), freebuf);
(void) printf(
"\tmetaslab %6llu offset %12llx spacemap %6llu free %5s\n",
- (u_longlong_t)(sm->sm_start / sm->sm_size),
- (u_longlong_t)sm->sm_start, (u_longlong_t)smo->smo_object, freebuf);
+ (u_longlong_t)msp->ms_id, (u_longlong_t)msp->ms_start,
+ (u_longlong_t)space_map_object(sm), freebuf);
- if (dump_opt['m'] > 1 && !dump_opt['L']) {
+ if (dump_opt['m'] > 2 && !dump_opt['L']) {
mutex_enter(&msp->ms_lock);
- space_map_load_wait(sm);
- if (!sm->sm_loaded)
- VERIFY(space_map_load(sm, zfs_metaslab_ops,
- SM_FREE, smo, spa->spa_meta_objset) == 0);
+ metaslab_load_wait(msp);
+ if (!msp->ms_loaded) {
+ VERIFY0(metaslab_load(msp));
+ range_tree_stat_verify(msp->ms_tree);
+ }
dump_metaslab_stats(msp);
- space_map_unload(sm);
+ metaslab_unload(msp);
mutex_exit(&msp->ms_lock);
}
- if (dump_opt['d'] > 5 || dump_opt['m'] > 2) {
- ASSERT(sm->sm_size == (1ULL << vd->vdev_ms_shift));
+ if (dump_opt['m'] > 1 && sm != NULL &&
+ spa_feature_is_active(spa,
+ &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM])) {
+ /*
+ * The space map histogram represents free space in chunks
+ * of sm_shift (i.e. bucket 0 refers to 2^sm_shift).
+ */
+ (void) printf("\tOn-disk histogram:\n");
+ dump_histogram(sm->sm_phys->smp_histogram,
+ SPACE_MAP_HISTOGRAM_SIZE(sm), sm->sm_shift);
+ }
+
+ if (dump_opt['d'] > 5 || dump_opt['m'] > 3) {
+ ASSERT(msp->ms_size == (1ULL << vd->vdev_ms_shift));
mutex_enter(&msp->ms_lock);
- dump_spacemap(spa->spa_meta_objset, smo, sm);
+ dump_spacemap(spa->spa_meta_objset, msp->ms_sm);
mutex_exit(&msp->ms_lock);
}
}
@@ -801,9 +874,9 @@ dump_all_ddts(spa_t *spa)
}
static void
-dump_dtl_seg(space_map_t *sm, uint64_t start, uint64_t size)
+dump_dtl_seg(void *arg, uint64_t start, uint64_t size)
{
- char *prefix = (void *)sm;
+ char *prefix = arg;
(void) printf("%s [%llu,%llu) length %llu\n",
prefix,
@@ -833,17 +906,16 @@ dump_dtl(vdev_t *vd, int indent)
required ? "DTL-required" : "DTL-expendable");
for (int t = 0; t < DTL_TYPES; t++) {
- space_map_t *sm = &vd->vdev_dtl[t];
- if (sm->sm_space == 0)
+ range_tree_t *rt = vd->vdev_dtl[t];
+ if (range_tree_space(rt) == 0)
continue;
(void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
indent + 2, "", name[t]);
- mutex_enter(sm->sm_lock);
- space_map_walk(sm, dump_dtl_seg, (void *)prefix);
- mutex_exit(sm->sm_lock);
+ mutex_enter(rt->rt_lock);
+ range_tree_walk(rt, dump_dtl_seg, prefix);
+ mutex_exit(rt->rt_lock);
if (dump_opt['d'] > 5 && vd->vdev_children == 0)
- dump_spacemap(spa->spa_meta_objset,
- &vd->vdev_dtl_smo, sm);
+ dump_spacemap(spa->spa_meta_objset, vd->vdev_dtl_sm);
}
for (int c = 0; c < vd->vdev_children; c++)
@@ -2172,39 +2244,17 @@ zdb_blkptr_cb(spa_t *spa, zilog_t *zilog
}
static void
-zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
+zdb_leak(void *arg, uint64_t start, uint64_t size)
{
- vdev_t *vd = sm->sm_ppd;
+ vdev_t *vd = arg;
(void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
(u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
}
-/* ARGSUSED */
-static void
-zdb_space_map_load(space_map_t *sm)
-{
-}
-
-static void
-zdb_space_map_unload(space_map_t *sm)
-{
- space_map_vacate(sm, zdb_leak, sm);
-}
-
-/* ARGSUSED */
-static void
-zdb_space_map_claim(space_map_t *sm, uint64_t start, uint64_t size)
-{
-}
-
-static space_map_ops_t zdb_space_map_ops = {
- zdb_space_map_load,
- zdb_space_map_unload,
+static metaslab_ops_t zdb_metaslab_ops = {
NULL, /* alloc */
- zdb_space_map_claim,
- NULL, /* free */
- NULL /* maxsize */
+ NULL /* fragmented */
};
static void
@@ -2259,11 +2309,21 @@ zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
for (int m = 0; m < vd->vdev_ms_count; m++) {
metaslab_t *msp = vd->vdev_ms[m];
mutex_enter(&msp->ms_lock);
- space_map_unload(msp->ms_map);
- VERIFY(space_map_load(msp->ms_map,
- &zdb_space_map_ops, SM_ALLOC, &msp->ms_smo,
- spa->spa_meta_objset) == 0);
- msp->ms_map->sm_ppd = vd;
+ metaslab_unload(msp);
+
+ /*
+ * For leak detection, we overload the metaslab
+ * ms_tree to contain allocated segments
+ * instead of free segments. As a result,
+ * we can't use the normal metaslab_load/unload
+ * interfaces.
+ */
+ if (msp->ms_sm != NULL) {
+ msp->ms_ops = &zdb_metaslab_ops;
+ VERIFY0(space_map_load(msp->ms_sm,
+ msp->ms_tree, SM_ALLOC));
+ msp->ms_loaded = B_TRUE;
+ }
mutex_exit(&msp->ms_lock);
}
}
@@ -2286,7 +2346,20 @@ zdb_leak_fini(spa_t *spa)
for (int m = 0; m < vd->vdev_ms_count; m++) {
metaslab_t *msp = vd->vdev_ms[m];
mutex_enter(&msp->ms_lock);
- space_map_unload(msp->ms_map);
+
+ /*
+ * The ms_tree has been overloaded to
+ * contain allocated segments. Now that we
+ * finished traversing all blocks, any
+ * block that remains in the ms_tree
+ * represents an allocated block that we
+ * did not claim during the traversal.
+ * Claimed blocks would have been removed
+ * from the ms_tree.
+ */
+ range_tree_vacate(msp->ms_tree, zdb_leak, vd);
+ msp->ms_loaded = B_FALSE;
+
mutex_exit(&msp->ms_lock);
}
}
@@ -2489,7 +2562,7 @@ dump_block_stats(spa_t *spa)
"(in 512-byte sectors): "
"number of blocks\n");
dump_histogram(zb->zb_psize_histogram,
- PSIZE_HISTO_SIZE);
+ PSIZE_HISTO_SIZE, 0);
}
}
}
@@ -2659,6 +2732,9 @@ dump_zpool(spa_t *spa)
if (dump_opt['b'] || dump_opt['c'])
rc = dump_block_stats(spa);
+ if (rc == 0)
+ rc = verify_spacemap_refcounts(spa);
+
if (dump_opt['s'])
show_pool_stats(spa);
Modified: stable/8/cddl/contrib/opensolaris/cmd/zpool/zpool-features.7
==============================================================================
--- stable/8/cddl/contrib/opensolaris/cmd/zpool/zpool-features.7 Mon Feb
17 17:11:58 2014 (r262094)
+++ stable/8/cddl/contrib/opensolaris/cmd/zpool/zpool-features.7 Mon Feb
17 17:12:11 2014 (r262095)
@@ -23,7 +23,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd September 20, 2013
+.Dd October 08, 2013
.Dt ZPOOL-FEATURES 7
.Os
.Sh NAME
@@ -251,6 +251,24 @@ configuration.
.\" .Xr dumpon 8
.\" command to configure a
.\" dump device on a pool comprised of multiple vdevs.
+.It Sy spacemap_histogram
+.Bl -column "READ\-ONLY COMPATIBLE" "com.delphix:spacemap_histogram"
+.It GUID Ta com.delphix:spacemap_histogram
+.It READ\-ONLY COMPATIBLE Ta yes
+.It DEPENDENCIES Ta none
+.El
+.Pp
+This features allows ZFS to maintain more information about how free space
+is organized within the pool. If this feature is
+.Sy enabled ,
+ZFS will
+set this feature to
+.Sy active
+when a new space map object is created or
+an existing space map is upgraded to the new format.
+Once the feature is
+.Sy active ,
+it will remain in that state until the pool is destroyed.
.El
.Sh SEE ALSO
.Xr zpool 8
Modified: stable/8/cddl/contrib/opensolaris/cmd/ztest/ztest.c
==============================================================================
--- stable/8/cddl/contrib/opensolaris/cmd/ztest/ztest.c Mon Feb 17 17:11:58
2014 (r262094)
+++ stable/8/cddl/contrib/opensolaris/cmd/ztest/ztest.c Mon Feb 17 17:12:11
2014 (r262095)
@@ -5339,7 +5339,7 @@ ztest_deadman_thread(void *arg)
* vdev_deadman() discovers that there hasn't been any recent
* I/Os then it will end up aborting the tests.
*/
- if (spa_suspended(spa)) {
+ if (spa_suspended(spa) || spa->spa_root_vdev == NULL) {
fatal(0, "aborting test after %llu seconds because "
"pool has transitioned to a suspended state.",
zfs_deadman_synctime_ms / 1000);
Modified: stable/8/sys/cddl/contrib/opensolaris/common/zfs/zfeature_common.c
==============================================================================
--- stable/8/sys/cddl/contrib/opensolaris/common/zfs/zfeature_common.c Mon Feb
17 17:11:58 2014 (r262094)
+++ stable/8/sys/cddl/contrib/opensolaris/common/zfs/zfeature_common.c Mon Feb
17 17:12:11 2014 (r262095)
@@ -20,7 +20,7 @@
*/
/*
- * Copyright (c) 2012 by Delphix. All rights reserved.
+ * Copyright (c) 2013 by Delphix. All rights reserved.
* Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
* Copyright (c) 2013, Joyent, Inc. All rights reserved.
*/
@@ -163,4 +163,7 @@ zpool_feature_init(void)
zfeature_register(SPA_FEATURE_MULTI_VDEV_CRASH_DUMP,
"com.joyent:multi_vdev_crash_dump", "multi_vdev_crash_dump",
"Crash dumps to multiple vdev pools.", B_FALSE, B_FALSE, NULL);
+ zfeature_register(SPA_FEATURE_SPACEMAP_HISTOGRAM,
+ "com.delphix:spacemap_histogram", "spacemap_histogram",
+ "Spacemaps maintain space histograms.", B_TRUE, B_FALSE, NULL);
}
Modified: stable/8/sys/cddl/contrib/opensolaris/common/zfs/zfeature_common.h
==============================================================================
--- stable/8/sys/cddl/contrib/opensolaris/common/zfs/zfeature_common.h Mon Feb
17 17:11:58 2014 (r262094)
+++ stable/8/sys/cddl/contrib/opensolaris/common/zfs/zfeature_common.h Mon Feb
17 17:12:11 2014 (r262095)
@@ -20,7 +20,7 @@
*/
/*
- * Copyright (c) 2012 by Delphix. All rights reserved.
+ * Copyright (c) 2013 by Delphix. All rights reserved.
* Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
* Copyright (c) 2013, Joyent, Inc. All rights reserved.
*/
@@ -55,6 +55,7 @@ static enum spa_feature {
SPA_FEATURE_EMPTY_BPOBJ,
SPA_FEATURE_LZ4_COMPRESS,
SPA_FEATURE_MULTI_VDEV_CRASH_DUMP,
+ SPA_FEATURE_SPACEMAP_HISTOGRAM,
SPA_FEATURES
} spa_feature_t;
Modified: stable/8/sys/cddl/contrib/opensolaris/uts/common/Makefile.files
==============================================================================
--- stable/8/sys/cddl/contrib/opensolaris/uts/common/Makefile.files Mon Feb
17 17:11:58 2014 (r262094)
+++ stable/8/sys/cddl/contrib/opensolaris/uts/common/Makefile.files Mon Feb
17 17:12:11 2014 (r262095)
@@ -21,7 +21,8 @@
#
# Copyright (c) 1991, 2010, Oracle and/or its affiliates. All rights reserved.
-# Copyright (c) 2012 by Delphix. All rights reserved.
+# Copyright (c) 2012 Nexenta Systems, Inc. All rights reserved.
+# Copyright (c) 2013 by Delphix. All rights reserved.
# Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
#
#
@@ -62,6 +63,7 @@ ZFS_COMMON_OBJS += \
lz4.o \
lzjb.o \
metaslab.o \
+ range_tree.o \
refcount.o \
rrwlock.o \
sa.o \
@@ -72,6 +74,7 @@ ZFS_COMMON_OBJS += \
spa_history.o \
spa_misc.o \
space_map.o \
+ space_reftree.o \
txg.o \
uberblock.o \
unique.o \
Modified: stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dnode.c
==============================================================================
--- stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dnode.c Mon Feb
17 17:11:58 2014 (r262094)
+++ stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dnode.c Mon Feb
17 17:12:11 2014 (r262095)
@@ -1339,7 +1339,7 @@ dnode_set_blksz(dnode_t *dn, uint64_t si
rw_enter(&dn->dn_struct_rwlock, RW_WRITER);
/* Check for any allocated blocks beyond the first */
- if (dn->dn_phys->dn_maxblkid != 0)
+ if (dn->dn_maxblkid != 0)
goto fail;
mutex_enter(&dn->dn_dbufs_mtx);
Modified: stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/metaslab.c
==============================================================================
--- stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/metaslab.c Mon Feb
17 17:11:58 2014 (r262094)
+++ stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/metaslab.c Mon Feb
17 17:12:11 2014 (r262095)
@@ -31,6 +31,7 @@
#include <sys/metaslab_impl.h>
#include <sys/vdev_impl.h>
#include <sys/zio.h>
+#include <sys/spa_impl.h>
SYSCTL_DECL(_vfs_zfs);
SYSCTL_NODE(_vfs_zfs, OID_AUTO, metaslab, CTLFLAG_RW, 0, "ZFS metaslab");
@@ -47,6 +48,11 @@ SYSCTL_NODE(_vfs_zfs, OID_AUTO, metaslab
(!((flags) & (METASLAB_GANG_CHILD | METASLAB_GANG_HEADER | \
METASLAB_GANG_AVOID)))
+#define METASLAB_WEIGHT_PRIMARY (1ULL << 63)
+#define METASLAB_WEIGHT_SECONDARY (1ULL << 62)
+#define METASLAB_ACTIVE_MASK \
+ (METASLAB_WEIGHT_PRIMARY | METASLAB_WEIGHT_SECONDARY)
+
uint64_t metaslab_aliquot = 512ULL << 10;
uint64_t metaslab_gang_bang = SPA_MAXBLOCKSIZE + 1; /* force gang blocks */
TUNABLE_QUAD("vfs.zfs.metaslab.gang_bang", &metaslab_gang_bang);
@@ -61,6 +67,11 @@ SYSCTL_QUAD(_vfs_zfs_metaslab, OID_AUTO,
* Values should be greater than or equal to 100.
*/
int zfs_condense_pct = 200;
+TUNABLE_INT("vfs.zfs.condense_pct", &zfs_condense_pct);
+SYSCTL_INT(_vfs_zfs, OID_AUTO, condense_pct, CTLFLAG_RWTUN,
+ &zfs_condense_pct, 0,
+ "Condense on-disk spacemap when it is more than this many percents"
+ " of in-memory counterpart");
/*
* This value defines the number of allowed allocation failures per vdev.
@@ -88,15 +99,29 @@ SYSCTL_INT(_vfs_zfs, OID_AUTO, mg_alloc_
* no metaslab group will be excluded based on this criterion.
*/
int zfs_mg_noalloc_threshold = 0;
+TUNABLE_INT("vfs.zfs.mg_noalloc_threshold", &zfs_mg_noalloc_threshold);
+SYSCTL_INT(_vfs_zfs, OID_AUTO, mg_noalloc_threshold, CTLFLAG_RWTUN,
+ &zfs_mg_noalloc_threshold, 0,
+ "Percentage of metaslab group size that should be free"
+ " to make it eligible for allocation");
/*
- * Metaslab debugging: when set, keeps all space maps in core to verify frees.
+ * When set will load all metaslabs when pool is first opened.
*/
-static int metaslab_debug = 0;
-TUNABLE_INT("vfs.zfs.metaslab.debug", &metaslab_debug);
-SYSCTL_INT(_vfs_zfs_metaslab, OID_AUTO, debug, CTLFLAG_RWTUN, &metaslab_debug,
- 0,
- "Metaslab debugging: when set, keeps all space maps in core to verify
frees");
+int metaslab_debug_load = 0;
+TUNABLE_INT("vfs.zfs.metaslab.debug_load", &metaslab_debug_load);
+SYSCTL_INT(_vfs_zfs_metaslab, OID_AUTO, debug_load, CTLFLAG_RWTUN,
+ &metaslab_debug_load, 0,
+ "Load all metaslabs when pool is first opened");
+
+/*
+ * When set will prevent metaslabs from being unloaded.
+ */
+int metaslab_debug_unload = 0;
+TUNABLE_INT("vfs.zfs.metaslab.debug_unload", &metaslab_debug_unload);
+SYSCTL_INT(_vfs_zfs_metaslab, OID_AUTO, debug_unload, CTLFLAG_RWTUN,
+ &metaslab_debug_unload, 0,
+ "Prevent metaslabs from being unloaded");
/*
* Minimum size which forces the dynamic allocator to change
@@ -135,20 +160,24 @@ SYSCTL_QUAD(_vfs_zfs_metaslab, OID_AUTO,
"A metaslab is considered \"free\" if it contains a contiguous segment
which is greater than vfs.zfs.metaslab.min_alloc_size");
/*
- * Max number of space_maps to prefetch.
- */
-int metaslab_prefetch_limit = SPA_DVAS_PER_BP;
-TUNABLE_INT("vfs.zfs.metaslab.prefetch_limit", &metaslab_prefetch_limit);
-SYSCTL_INT(_vfs_zfs_metaslab, OID_AUTO, prefetch_limit, CTLFLAG_RWTUN,
- &metaslab_prefetch_limit, 0, "Maximum number of space_maps to prefetch");
-
-/*
- * Percentage bonus multiplier for metaslabs that are in the bonus area.
+ * Percentage of all cpus that can be used by the metaslab taskq.
*/
-int metaslab_smo_bonus_pct = 150;
-TUNABLE_INT("vfs.zfs.metaslab.smo_bonus_pct", &metaslab_smo_bonus_pct);
-SYSCTL_INT(_vfs_zfs_metaslab, OID_AUTO, smo_bonus_pct, CTLFLAG_RWTUN,
- &metaslab_smo_bonus_pct, 0, "Maximum number of space_maps to prefetch");
+int metaslab_load_pct = 50;
+TUNABLE_INT("vfs.zfs.metaslab.load_pct", &metaslab_load_pct);
+SYSCTL_INT(_vfs_zfs_metaslab, OID_AUTO, load_pct, CTLFLAG_RWTUN,
+ &metaslab_load_pct, 0,
+ "Percentage of cpus that can be used by the metaslab taskq");
+
+/*
+ * Determines how many txgs a metaslab may remain loaded without having any
+ * allocations from it. As long as a metaslab continues to be used we will
+ * keep it loaded.
+ */
+int metaslab_unload_delay = TXG_SIZE * 2;
+TUNABLE_INT("vfs.zfs.metaslab.unload_delay", &metaslab_unload_delay);
+SYSCTL_INT(_vfs_zfs_metaslab, OID_AUTO, unload_delay, CTLFLAG_RWTUN,
+ &metaslab_unload_delay, 0,
+ "Number of TXGs that an unused metaslab can be kept in memory");
/*
* Should we be willing to write data to degraded vdevs?
@@ -160,12 +189,41 @@ SYSCTL_INT(_vfs_zfs, OID_AUTO, write_to_
TUNABLE_INT("vfs.zfs.write_to_degraded", &zfs_write_to_degraded);
/*
+ * Max number of metaslabs per group to preload.
+ */
+int metaslab_preload_limit = SPA_DVAS_PER_BP;
+TUNABLE_INT("vfs.zfs.metaslab.preload_limit", &metaslab_preload_limit);
+SYSCTL_INT(_vfs_zfs_metaslab, OID_AUTO, preload_limit, CTLFLAG_RWTUN,
+ &metaslab_preload_limit, 0,
+ "Max number of metaslabs per group to preload");
+
+/*
+ * Enable/disable preloading of metaslab.
+ */
+boolean_t metaslab_preload_enabled = B_TRUE;
+TUNABLE_INT("vfs.zfs.metaslab.preload_enabled", &metaslab_preload_enabled);
+SYSCTL_INT(_vfs_zfs_metaslab, OID_AUTO, preload_enabled, CTLFLAG_RWTUN,
+ &metaslab_preload_enabled, 0,
+ "Max number of metaslabs per group to preload");
+
+/*
+ * Enable/disable additional weight factor for each metaslab.
+ */
+boolean_t metaslab_weight_factor_enable = B_FALSE;
+TUNABLE_INT("vfs.zfs.metaslab.weight_factor_enable",
+ &metaslab_weight_factor_enable);
+SYSCTL_INT(_vfs_zfs_metaslab, OID_AUTO, weight_factor_enable, CTLFLAG_RWTUN,
+ &metaslab_weight_factor_enable, 0,
+ "Enable additional weight factor for each metaslab");
+
+
+/*
* ==========================================================================
* Metaslab classes
* ==========================================================================
*/
metaslab_class_t *
-metaslab_class_create(spa_t *spa, space_map_ops_t *ops)
+metaslab_class_create(spa_t *spa, metaslab_ops_t *ops)
{
metaslab_class_t *mc;
@@ -296,9 +354,9 @@ metaslab_compare(const void *x1, const v
/*
* If the weights are identical, use the offset to force uniqueness.
*/
- if (m1->ms_map->sm_start < m2->ms_map->sm_start)
+ if (m1->ms_start < m2->ms_start)
return (-1);
- if (m1->ms_map->sm_start > m2->ms_map->sm_start)
+ if (m1->ms_start > m2->ms_start)
return (1);
ASSERT3P(m1, ==, m2);
@@ -366,6 +424,9 @@ metaslab_group_create(metaslab_class_t *
mg->mg_class = mc;
mg->mg_activation_count = 0;
+ mg->mg_taskq = taskq_create("metaslab_group_tasksq", metaslab_load_pct,
+ minclsyspri, 10, INT_MAX, TASKQ_THREADS_CPU_PCT);
+
return (mg);
}
@@ -435,6 +496,8 @@ metaslab_group_passivate(metaslab_group_
return;
}
+ taskq_wait(mg->mg_taskq);
+
mgprev = mg->mg_prev;
mgnext = mg->mg_next;
@@ -515,130 +578,200 @@ metaslab_group_allocatable(metaslab_grou
/*
* ==========================================================================
- * Common allocator routines
+ * Range tree callbacks
* ==========================================================================
*/
+
+/*
+ * Comparison function for the private size-ordered tree. Tree is sorted
+ * by size, larger sizes at the end of the tree.
+ */
static int
-metaslab_segsize_compare(const void *x1, const void *x2)
+metaslab_rangesize_compare(const void *x1, const void *x2)
{
- const space_seg_t *s1 = x1;
- const space_seg_t *s2 = x2;
- uint64_t ss_size1 = s1->ss_end - s1->ss_start;
- uint64_t ss_size2 = s2->ss_end - s2->ss_start;
+ const range_seg_t *r1 = x1;
+ const range_seg_t *r2 = x2;
+ uint64_t rs_size1 = r1->rs_end - r1->rs_start;
+ uint64_t rs_size2 = r2->rs_end - r2->rs_start;
- if (ss_size1 < ss_size2)
+ if (rs_size1 < rs_size2)
return (-1);
- if (ss_size1 > ss_size2)
+ if (rs_size1 > rs_size2)
return (1);
- if (s1->ss_start < s2->ss_start)
+ if (r1->rs_start < r2->rs_start)
return (-1);
- if (s1->ss_start > s2->ss_start)
+
+ if (r1->rs_start > r2->rs_start)
return (1);
return (0);
}
/*
- * This is a helper function that can be used by the allocator to find
- * a suitable block to allocate. This will search the specified AVL
- * tree looking for a block that matches the specified criteria.
+ * Create any block allocator specific components. The current allocators
+ * rely on using both a size-ordered range_tree_t and an array of uint64_t's.
*/
-static uint64_t
-metaslab_block_picker(avl_tree_t *t, uint64_t *cursor, uint64_t size,
- uint64_t align)
+static void
+metaslab_rt_create(range_tree_t *rt, void *arg)
{
- space_seg_t *ss, ssearch;
- avl_index_t where;
-
- ssearch.ss_start = *cursor;
- ssearch.ss_end = *cursor + size;
+ metaslab_t *msp = arg;
- ss = avl_find(t, &ssearch, &where);
- if (ss == NULL)
- ss = avl_nearest(t, where, AVL_AFTER);
+ ASSERT3P(rt->rt_arg, ==, msp);
+ ASSERT(msp->ms_tree == NULL);
- while (ss != NULL) {
- uint64_t offset = P2ROUNDUP(ss->ss_start, align);
-
- if (offset + size <= ss->ss_end) {
- *cursor = offset + size;
- return (offset);
- }
- ss = AVL_NEXT(t, ss);
- }
-
- /*
- * If we know we've searched the whole map (*cursor == 0), give up.
- * Otherwise, reset the cursor to the beginning and try again.
- */
- if (*cursor == 0)
- return (-1ULL);
-
- *cursor = 0;
- return (metaslab_block_picker(t, cursor, size, align));
+ avl_create(&msp->ms_size_tree, metaslab_rangesize_compare,
+ sizeof (range_seg_t), offsetof(range_seg_t, rs_pp_node));
}
+/*
+ * Destroy the block allocator specific components.
+ */
static void
-metaslab_pp_load(space_map_t *sm)
+metaslab_rt_destroy(range_tree_t *rt, void *arg)
{
- space_seg_t *ss;
-
- ASSERT(sm->sm_ppd == NULL);
- sm->sm_ppd = kmem_zalloc(64 * sizeof (uint64_t), KM_SLEEP);
+ metaslab_t *msp = arg;
- sm->sm_pp_root = kmem_alloc(sizeof (avl_tree_t), KM_SLEEP);
- avl_create(sm->sm_pp_root, metaslab_segsize_compare,
- sizeof (space_seg_t), offsetof(struct space_seg, ss_pp_node));
+ ASSERT3P(rt->rt_arg, ==, msp);
+ ASSERT3P(msp->ms_tree, ==, rt);
+ ASSERT0(avl_numnodes(&msp->ms_size_tree));
- for (ss = avl_first(&sm->sm_root); ss; ss = AVL_NEXT(&sm->sm_root, ss))
- avl_add(sm->sm_pp_root, ss);
+ avl_destroy(&msp->ms_size_tree);
}
static void
-metaslab_pp_unload(space_map_t *sm)
+metaslab_rt_add(range_tree_t *rt, range_seg_t *rs, void *arg)
{
- void *cookie = NULL;
-
- kmem_free(sm->sm_ppd, 64 * sizeof (uint64_t));
- sm->sm_ppd = NULL;
-
- while (avl_destroy_nodes(sm->sm_pp_root, &cookie) != NULL) {
- /* tear down the tree */
- }
+ metaslab_t *msp = arg;
- avl_destroy(sm->sm_pp_root);
- kmem_free(sm->sm_pp_root, sizeof (avl_tree_t));
- sm->sm_pp_root = NULL;
+ ASSERT3P(rt->rt_arg, ==, msp);
+ ASSERT3P(msp->ms_tree, ==, rt);
+ VERIFY(!msp->ms_condensing);
+ avl_add(&msp->ms_size_tree, rs);
}
-/* ARGSUSED */
static void
-metaslab_pp_claim(space_map_t *sm, uint64_t start, uint64_t size)
+metaslab_rt_remove(range_tree_t *rt, range_seg_t *rs, void *arg)
{
- /* No need to update cursor */
+ metaslab_t *msp = arg;
+
+ ASSERT3P(rt->rt_arg, ==, msp);
+ ASSERT3P(msp->ms_tree, ==, rt);
+ VERIFY(!msp->ms_condensing);
+ avl_remove(&msp->ms_size_tree, rs);
}
-/* ARGSUSED */
static void
-metaslab_pp_free(space_map_t *sm, uint64_t start, uint64_t size)
+metaslab_rt_vacate(range_tree_t *rt, void *arg)
{
- /* No need to update cursor */
+ metaslab_t *msp = arg;
+
+ ASSERT3P(rt->rt_arg, ==, msp);
+ ASSERT3P(msp->ms_tree, ==, rt);
+
+ /*
+ * Normally one would walk the tree freeing nodes along the way.
+ * Since the nodes are shared with the range trees we can avoid
+ * walking all nodes and just reinitialize the avl tree. The nodes
+ * will be freed by the range tree, so we don't want to free them here.
+ */
+ avl_create(&msp->ms_size_tree, metaslab_rangesize_compare,
+ sizeof (range_seg_t), offsetof(range_seg_t, rs_pp_node));
}
+static range_tree_ops_t metaslab_rt_ops = {
+ metaslab_rt_create,
+ metaslab_rt_destroy,
+ metaslab_rt_add,
+ metaslab_rt_remove,
+ metaslab_rt_vacate
+};
+
+/*
+ * ==========================================================================
+ * Metaslab block operations
+ * ==========================================================================
+ */
+
/*
* Return the maximum contiguous segment within the metaslab.
*/
uint64_t
-metaslab_pp_maxsize(space_map_t *sm)
+metaslab_block_maxsize(metaslab_t *msp)
{
- avl_tree_t *t = sm->sm_pp_root;
- space_seg_t *ss;
+ avl_tree_t *t = &msp->ms_size_tree;
+ range_seg_t *rs;
- if (t == NULL || (ss = avl_last(t)) == NULL)
+ if (t == NULL || (rs = avl_last(t)) == NULL)
return (0ULL);
- return (ss->ss_end - ss->ss_start);
+ return (rs->rs_end - rs->rs_start);
+}
+
+uint64_t
+metaslab_block_alloc(metaslab_t *msp, uint64_t size)
+{
+ uint64_t start;
+ range_tree_t *rt = msp->ms_tree;
+
+ VERIFY(!msp->ms_condensing);
+
+ start = msp->ms_ops->msop_alloc(msp, size);
+ if (start != -1ULL) {
+ vdev_t *vd = msp->ms_group->mg_vd;
+
+ VERIFY0(P2PHASE(start, 1ULL << vd->vdev_ashift));
+ VERIFY0(P2PHASE(size, 1ULL << vd->vdev_ashift));
+ VERIFY3U(range_tree_space(rt) - size, <=, msp->ms_size);
+ range_tree_remove(rt, start, size);
+ }
+ return (start);
+}
+
+/*
+ * ==========================================================================
+ * Common allocator routines
+ * ==========================================================================
+ */
+
+/*
+ * This is a helper function that can be used by the allocator to find
+ * a suitable block to allocate. This will search the specified AVL
+ * tree looking for a block that matches the specified criteria.
+ */
+static uint64_t
+metaslab_block_picker(avl_tree_t *t, uint64_t *cursor, uint64_t size,
+ uint64_t align)
+{
+ range_seg_t *rs, rsearch;
+ avl_index_t where;
+
+ rsearch.rs_start = *cursor;
+ rsearch.rs_end = *cursor + size;
+
+ rs = avl_find(t, &rsearch, &where);
+ if (rs == NULL)
+ rs = avl_nearest(t, where, AVL_AFTER);
+
+ while (rs != NULL) {
+ uint64_t offset = P2ROUNDUP(rs->rs_start, align);
+
+ if (offset + size <= rs->rs_end) {
+ *cursor = offset + size;
+ return (offset);
+ }
+ rs = AVL_NEXT(t, rs);
+ }
+
+ /*
+ * If we know we've searched the whole map (*cursor == 0), give up.
+ * Otherwise, reset the cursor to the beginning and try again.
+ */
+ if (*cursor == 0)
+ return (-1ULL);
+
+ *cursor = 0;
+ return (metaslab_block_picker(t, cursor, size, align));
}
/*
@@ -647,29 +780,31 @@ metaslab_pp_maxsize(space_map_t *sm)
* ==========================================================================
*/
static uint64_t
-metaslab_ff_alloc(space_map_t *sm, uint64_t size)
+metaslab_ff_alloc(metaslab_t *msp, uint64_t size)
{
- avl_tree_t *t = &sm->sm_root;
+ /*
+ * Find the largest power of 2 block size that evenly divides the
+ * requested size. This is used to try to allocate blocks with similar
+ * alignment from the same area of the metaslab (i.e. same cursor
+ * bucket) but it does not guarantee that other allocations sizes
+ * may exist in the same region.
+ */
uint64_t align = size & -size;
- uint64_t *cursor = (uint64_t *)sm->sm_ppd + highbit(align) - 1;
+ uint64_t *cursor = &msp->ms_lbas[highbit(align) - 1];
+ avl_tree_t *t = &msp->ms_tree->rt_root;
return (metaslab_block_picker(t, cursor, size, align));
}
*** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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