diff options
Diffstat (limited to 'cmd/ztest/ztest.c')
| -rw-r--r-- | cmd/ztest/ztest.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/cmd/ztest/ztest.c b/cmd/ztest/ztest.c index a8b5418b6..8a21bf378 100644 --- a/cmd/ztest/ztest.c +++ b/cmd/ztest/ztest.c @@ -200,7 +200,8 @@ extern uint64_t metaslab_df_alloc_threshold; extern unsigned long zfs_deadman_synctime_ms; extern int metaslab_preload_limit; extern boolean_t zfs_compressed_arc_enabled; -extern int zfs_abd_scatter_enabled; +extern int zfs_abd_scatter_enabled; +extern int dmu_object_alloc_chunk_shift; static ztest_shared_opts_t *ztest_shared_opts; static ztest_shared_opts_t ztest_opts; @@ -314,6 +315,7 @@ static ztest_shared_callstate_t *ztest_shared_callstate; ztest_func_t ztest_dmu_read_write; ztest_func_t ztest_dmu_write_parallel; ztest_func_t ztest_dmu_object_alloc_free; +ztest_func_t ztest_dmu_object_next_chunk; ztest_func_t ztest_dmu_commit_callbacks; ztest_func_t ztest_zap; ztest_func_t ztest_zap_parallel; @@ -361,6 +363,7 @@ ztest_info_t ztest_info[] = { ZTI_INIT(ztest_dmu_read_write, 1, &zopt_always), ZTI_INIT(ztest_dmu_write_parallel, 10, &zopt_always), ZTI_INIT(ztest_dmu_object_alloc_free, 1, &zopt_always), + ZTI_INIT(ztest_dmu_object_next_chunk, 1, &zopt_sometimes), ZTI_INIT(ztest_dmu_commit_callbacks, 1, &zopt_always), ZTI_INIT(ztest_zap, 30, &zopt_always), ZTI_INIT(ztest_zap_parallel, 100, &zopt_always), @@ -4055,6 +4058,26 @@ ztest_dmu_object_alloc_free(ztest_ds_t *zd, uint64_t id) umem_free(od, size); } +/* + * Rewind the global allocator to verify object allocation backfilling. + */ +void +ztest_dmu_object_next_chunk(ztest_ds_t *zd, uint64_t id) +{ + objset_t *os = zd->zd_os; + int dnodes_per_chunk = 1 << dmu_object_alloc_chunk_shift; + uint64_t object; + + /* + * Rewind the global allocator randomly back to a lower object number + * to force backfilling and reclamation of recently freed dnodes. + */ + mutex_enter(&os->os_obj_lock); + object = ztest_random(os->os_obj_next_chunk); + os->os_obj_next_chunk = P2ALIGN(object, dnodes_per_chunk); + mutex_exit(&os->os_obj_lock); +} + #undef OD_ARRAY_SIZE #define OD_ARRAY_SIZE 2 |