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Illumos 4171, 4172

Browse Source 
4171 clean up spa_feature_*() interfaces
4172 implement extensible_dataset feature for use by other zpool features

Reviewed by: Max Grossman <max.grossman@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Approved by: Garrett D'Amore <garrett@damore.org>a

References:
  https://www.illumos.org/issues/4171
  https://www.illumos.org/issues/4172
  https://github.com/illumos/illumos-gate/commit/2acef22

Ported-by: Tim Chase <tim@chase2k.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #2528
This commit is contained in:
Matthew Ahrens
2013-10-08 09:13:05 -08:00
committed by Brian Behlendorf
parent 62b6939308
commit fa86b5dbb6
27 changed files with 369 additions and 276 deletions
Download Patch File Download Diff File Expand all files Collapse all files
cmd/zhack/zhack.c
+25 -14
View File
@@ -283,12 +283,13 @@ zhack_do_feature_stat(int argc, char **argv)
}
static void
feature_enable_sync(void *arg, dmu_tx_t *tx)
zhack_feature_enable_sync(void *arg, dmu_tx_t *tx)
{
spa_t *spa = dmu_tx_pool(tx)->dp_spa;
zfeature_info_t *feature = arg;
spa_feature_enable(spa, feature, tx);
feature_enable_sync(spa, feature, tx);
spa_history_log_internal(spa, "zhack enable feature", tx,
"name=%s can_readonly=%u",
feature->fi_guid, feature->fi_can_readonly);
@@ -302,7 +303,7 @@ zhack_do_feature_enable(int argc, char **argv)
spa_t *spa;
objset_t *mos;
zfeature_info_t feature;
zfeature_info_t *nodeps[] = { NULL };
spa_feature_t nodeps[] = { SPA_FEATURE_NONE };
/*
* Features are not added to the pool's label until their refcounts
@@ -349,14 +350,14 @@ zhack_do_feature_enable(int argc, char **argv)
zhack_spa_open(target, B_FALSE, FTAG, &spa);
mos = spa->spa_meta_objset;
if (0 == zfeature_lookup_guid(feature.fi_guid, NULL))
if (zfeature_is_supported(feature.fi_guid))
fatal(spa, FTAG, "'%s' is a real feature, will not enable");
if (0 == zap_contains(mos, spa->spa_feat_desc_obj, feature.fi_guid))
fatal(spa, FTAG, "feature already enabled: %s",
feature.fi_guid);
VERIFY0(dsl_sync_task(spa_name(spa), NULL,
feature_enable_sync, &feature, 5));
zhack_feature_enable_sync, &feature, 5));
spa_close(spa, FTAG);
@@ -368,8 +369,10 @@ feature_incr_sync(void *arg, dmu_tx_t *tx)
{
spa_t *spa = dmu_tx_pool(tx)->dp_spa;
zfeature_info_t *feature = arg;
uint64_t refcount;
spa_feature_incr(spa, feature, tx);
VERIFY0(feature_get_refcount(spa, feature, &refcount));
feature_sync(spa, feature, refcount + 1, tx);
spa_history_log_internal(spa, "zhack feature incr", tx,
"name=%s", feature->fi_guid);
}
@@ -379,8 +382,10 @@ feature_decr_sync(void *arg, dmu_tx_t *tx)
{
spa_t *spa = dmu_tx_pool(tx)->dp_spa;
zfeature_info_t *feature = arg;
uint64_t refcount;
spa_feature_decr(spa, feature, tx);
VERIFY0(feature_get_refcount(spa, feature, &refcount));
feature_sync(spa, feature, refcount - 1, tx);
spa_history_log_internal(spa, "zhack feature decr", tx,
"name=%s", feature->fi_guid);
}
@@ -394,7 +399,7 @@ zhack_do_feature_ref(int argc, char **argv)
spa_t *spa;
objset_t *mos;
zfeature_info_t feature;
zfeature_info_t *nodeps[] = { NULL };
spa_feature_t nodeps[] = { SPA_FEATURE_NONE };
/*
* fi_desc does not matter here because it was written to disk
@@ -437,9 +442,10 @@ zhack_do_feature_ref(int argc, char **argv)
zhack_spa_open(target, B_FALSE, FTAG, &spa);
mos = spa->spa_meta_objset;
if (0 == zfeature_lookup_guid(feature.fi_guid, NULL))
fatal(spa, FTAG, "'%s' is a real feature, will not change "
"refcount");
if (zfeature_is_supported(feature.fi_guid)) {
fatal(spa, FTAG,
"'%s' is a real feature, will not change refcount");
}
if (0 == zap_contains(mos, spa->spa_feat_for_read_obj,
feature.fi_guid)) {
@@ -451,9 +457,14 @@ zhack_do_feature_ref(int argc, char **argv)
fatal(spa, FTAG, "feature is not enabled: %s", feature.fi_guid);
}
if (decr && !spa_feature_is_active(spa, &feature))
fatal(spa, FTAG, "feature refcount already 0: %s",
feature.fi_guid);
if (decr) {
uint64_t count;
if (feature_get_refcount(spa, &feature, &count) == 0 &&
count != 0) {
fatal(spa, FTAG, "feature refcount already 0: %s",
feature.fi_guid);
}
}
VERIFY0(dsl_sync_task(spa_name(spa), NULL,
decr ? feature_decr_sync : feature_incr_sync, &feature, 5));