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-rw-r--r--cmd/ztest/ztest.c23
1 files changed, 21 insertions, 2 deletions
diff --git a/cmd/ztest/ztest.c b/cmd/ztest/ztest.c
index 0dace4961..9b7adc726 100644
--- a/cmd/ztest/ztest.c
+++ b/cmd/ztest/ztest.c
@@ -365,7 +365,7 @@ ztest_info_t ztest_info[] = {
{ ztest_spa_rename, 1, &zopt_rarely },
{ ztest_scrub, 1, &zopt_rarely },
{ ztest_dsl_dataset_promote_busy, 1, &zopt_rarely },
- { ztest_vdev_attach_detach, 1, &zopt_rarely },
+ { ztest_vdev_attach_detach, 1, &zopt_rarely },
{ ztest_vdev_LUN_growth, 1, &zopt_rarely },
{ ztest_vdev_add_remove, 1,
&ztest_opts.zo_vdevtime },
@@ -416,6 +416,13 @@ static spa_t *ztest_spa = NULL;
static ztest_ds_t *ztest_ds;
static kmutex_t ztest_vdev_lock;
+
+/*
+ * The ztest_name_lock protects the pool and dataset namespace used by
+ * the individual tests. To modify the namespace, consumers must grab
+ * this lock as writer. Grabbing the lock as reader will ensure that the
+ * namespace does not change while the lock is held.
+ */
static krwlock_t ztest_name_lock;
static boolean_t ztest_dump_core = B_TRUE;
@@ -5034,10 +5041,16 @@ ztest_reguid(ztest_ds_t *zd, uint64_t id)
{
spa_t *spa = ztest_spa;
uint64_t orig, load;
+ int error;
orig = spa_guid(spa);
load = spa_load_guid(spa);
- if (spa_change_guid(spa) != 0)
+
+ (void) rw_enter(&ztest_name_lock, RW_WRITER);
+ error = spa_change_guid(spa);
+ (void) rw_exit(&ztest_name_lock);
+
+ if (error != 0)
return;
if (ztest_opts.zo_verbose >= 3) {
@@ -5732,6 +5745,12 @@ ztest_freeze(void)
VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG));
VERIFY3U(0, ==, ztest_dataset_open(0));
ztest_dataset_close(0);
+
+ spa->spa_debug = B_TRUE;
+ ztest_spa = spa;
+ txg_wait_synced(spa_get_dsl(spa), 0);
+ ztest_reguid(NULL, 0);
+
spa_close(spa, FTAG);
kernel_fini();
}