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Illumos 5959 - clean up per-dataset feature count code

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5959 clean up per-dataset feature count code
Reviewed by: Toomas Soome <tsoome@me.com>
Reviewed by: George Wilson <george@delphix.com>
Reviewed by: Alex Reece <alex@delphix.com>
Approved by: Richard Lowe <richlowe@richlowe.net>

References:
  https://www.illumos.org/issues/5959
  https://github.com/illumos/illumos-gate/commit/ca0cc39

Porting notes:

illumos code doesn't check for feature_get_refcount() returning
ENOTSUP (which means feature is disabled) in zdb. zfsonlinux added
a check in https://github.com/zfsonlinux/zfs/commit/784652c
due to #3468. The check was reintroduced here.

Ported-by: Witaut Bajaryn <vitaut.bayaryn@gmail.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #3965
This commit is contained in:
Matthew Ahrens
2015-07-24 09:53:55 -07:00
committed by Brian Behlendorf
parent 072484504f
commit 241b541574
11 changed files with 237 additions and 178 deletions
Download Patch File Download Diff File Expand all files Collapse all files
cmd/zdb/zdb.c
+32 -14
View File
@@ -21,7 +21,7 @@
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2011, 2014 by Delphix. All rights reserved.
* Copyright (c) 2011, 2015 by Delphix. All rights reserved.
* Copyright (c) 2015, Intel Corporation.
*/
@@ -2274,7 +2274,7 @@ dump_label(const char *dev)
(void) close(fd);
}
static uint64_t num_large_blocks;
static uint64_t dataset_feature_count[SPA_FEATURES];
/*ARGSUSED*/
static int
@@ -2282,14 +2282,22 @@ dump_one_dir(const char *dsname, void *arg)
{
int error;
objset_t *os;
spa_feature_t f;
error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
if (error) {
(void) printf("Could not open %s, error %d\n", dsname, error);
return (0);
}
if (dmu_objset_ds(os)->ds_large_blocks)
num_large_blocks++;
for (f = 0; f < SPA_FEATURES; f++) {
if (!dmu_objset_ds(os)->ds_feature_inuse[f])
continue;
ASSERT(spa_feature_table[f].fi_flags &
ZFEATURE_FLAG_PER_DATASET);
dataset_feature_count[f]++;
}
dump_dir(os);
dmu_objset_disown(os, FTAG);
fuid_table_destroy();
@@ -3094,7 +3102,7 @@ dump_zpool(spa_t *spa)
dump_metaslab_groups(spa);
if (dump_opt['d'] || dump_opt['i']) {
uint64_t refcount;
spa_feature_t f;
dump_dir(dp->dp_meta_objset);
if (dump_opt['d'] >= 3) {
@@ -3117,18 +3125,28 @@ dump_zpool(spa_t *spa)
(void) dmu_objset_find(spa_name(spa), dump_one_dir,
NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
if (feature_get_refcount(spa,
&spa_feature_table[SPA_FEATURE_LARGE_BLOCKS],
&refcount) != ENOTSUP) {
if (num_large_blocks != refcount) {
(void) printf("large_blocks feature refcount "
"mismatch: expected %lld != actual %lld\n",
(longlong_t)num_large_blocks,
for (f = 0; f < SPA_FEATURES; f++) {
uint64_t refcount;
if (!(spa_feature_table[f].fi_flags &
ZFEATURE_FLAG_PER_DATASET)) {
ASSERT0(dataset_feature_count[f]);
continue;
}
if (feature_get_refcount(spa, &spa_feature_table[f],
&refcount) == ENOTSUP)
continue;
if (dataset_feature_count[f] != refcount) {
(void) printf("%s feature refcount mismatch: "
"%lld datasets != %lld refcount\n",
spa_feature_table[f].fi_uname,
(longlong_t)dataset_feature_count[f],
(longlong_t)refcount);
rc = 2;
} else {
(void) printf("Verified large_blocks feature "
"refcount is correct (%llu)\n",
(void) printf("Verified %s feature refcount "
"of %llu is correct\n",
spa_feature_table[f].fi_uname,
(longlong_t)refcount);
}
}