diff options
Diffstat (limited to 'cmd/ztest')
| -rw-r--r-- | cmd/ztest/ztest.c | 43 |
1 files changed, 37 insertions, 6 deletions
diff --git a/cmd/ztest/ztest.c b/cmd/ztest/ztest.c index 203da4032..0967717fb 100644 --- a/cmd/ztest/ztest.c +++ b/cmd/ztest/ztest.c @@ -859,7 +859,7 @@ static uint64_t ztest_get_ashift(void) { if (ztest_opts.zo_ashift == 0) - return (SPA_MINBLOCKSHIFT + ztest_random(3)); + return (SPA_MINBLOCKSHIFT + ztest_random(5)); return (ztest_opts.zo_ashift); } @@ -1021,11 +1021,28 @@ ztest_random_spa_version(uint64_t initial_version) return (version); } +/* + * Find the largest ashift used + */ +static uint64_t +ztest_spa_get_ashift() { + uint64_t i; + uint64_t ashift = SPA_MINBLOCKSHIFT; + vdev_t *rvd = ztest_spa->spa_root_vdev; + + for (i = 0; i < rvd->vdev_children; i++) { + ashift = MAX(ashift, rvd->vdev_child[i]->vdev_ashift); + } + return (ashift); +} + static int ztest_random_blocksize(void) { - return (1 << (SPA_MINBLOCKSHIFT + - ztest_random(SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1))); + // Choose a block size >= the ashift. + uint64_t block_shift = + ztest_random(SPA_MAXBLOCKSHIFT - ztest_spa_get_ashift() + 1); + return (1 << (SPA_MINBLOCKSHIFT + block_shift)); } static int @@ -5964,16 +5981,30 @@ ztest_freeze(void) spa_freeze(spa); /* + * Because it is hard to predict how much space a write will actually + * require beforehand, we leave ourselves some fudge space to write over + * capacity. + */ + uint64_t capacity = metaslab_class_get_space(spa_normal_class(spa)) / 2; + + /* * Run tests that generate log records but don't alter the pool config * or depend on DSL sync tasks (snapshots, objset create/destroy, etc). * We do a txg_wait_synced() after each iteration to force the txg * to increase well beyond the last synced value in the uberblock. * The ZIL should be OK with that. + * + * Run a random number of times less than zo_maxloops and ensure we do + * not run out of space on the pool. */ while (ztest_random(10) != 0 && - numloops++ < ztest_opts.zo_maxloops) { - ztest_dmu_write_parallel(zd, 0); - ztest_dmu_object_alloc_free(zd, 0); + numloops++ < ztest_opts.zo_maxloops && + metaslab_class_get_alloc(spa_normal_class(spa)) < capacity) { + ztest_od_t od; + ztest_od_init(&od, 0, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0); + VERIFY0(ztest_object_init(zd, &od, sizeof (od), B_FALSE)); + ztest_io(zd, od.od_object, + ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); txg_wait_synced(spa_get_dsl(spa), 0); } |