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Add support for parallel pool exports
Changed spa_export_common() such that it no longer holds the spa_namespace_lock for the entire duration and instead sets spa_export_thread to indicate an import is in progress on the spa. This allows for an export to a diffent pool to proceed in parallel while an export is still processing potentially long operations like spa_unload_log_sm_flush_all(). Calls like spa_lookup() and spa_vdev_enter() that rely on the spa_namespace_lock to serialize them against a concurrent export, now wait for any in-progress export thread to complete before proceeding. The 'zpool import -a' sub-command also provides multi-threaded support, using a thread pool to submit the exports in parallel. Sponsored-By: Klara Inc. Sponsored-by: Wasabi Technology, Inc. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: George Wilson <gwilson@delphix.com> Signed-off-by: Don Brady <don.brady@klarasystems.com> Closes #16153
This commit is contained in:
Don Brady
Brian Behlendorf
parent
abec7dcd30
commit
975a13259b
@ -2030,10 +2030,19 @@ zpool_do_destroy(int argc, char **argv)
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}
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typedef struct export_cbdata {
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tpool_t *tpool;
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pthread_mutex_t mnttab_lock;
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boolean_t force;
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boolean_t hardforce;
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int retval;
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} export_cbdata_t;
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typedef struct {
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char *aea_poolname;
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export_cbdata_t *aea_cbdata;
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} async_export_args_t;
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/*
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* Export one pool
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*/
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@ -2042,11 +2051,20 @@ zpool_export_one(zpool_handle_t *zhp, void *data)
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{
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export_cbdata_t *cb = data;
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if (zpool_disable_datasets(zhp, cb->force) != 0)
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return (1);
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/*
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* zpool_disable_datasets() is not thread-safe for mnttab access.
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* So we serialize access here for 'zpool export -a' parallel case.
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*/
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if (cb->tpool != NULL)
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pthread_mutex_lock(&cb->mnttab_lock);
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/* The history must be logged as part of the export */
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log_history = B_FALSE;
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int retval = zpool_disable_datasets(zhp, cb->force);
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if (cb->tpool != NULL)
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pthread_mutex_unlock(&cb->mnttab_lock);
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if (retval)
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return (1);
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if (cb->hardforce) {
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if (zpool_export_force(zhp, history_str) != 0)
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@ -2058,6 +2076,48 @@ zpool_export_one(zpool_handle_t *zhp, void *data)
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return (0);
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}
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/*
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* Asynchronous export request
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*/
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static void
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zpool_export_task(void *arg)
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{
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async_export_args_t *aea = arg;
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zpool_handle_t *zhp = zpool_open(g_zfs, aea->aea_poolname);
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if (zhp != NULL) {
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int ret = zpool_export_one(zhp, aea->aea_cbdata);
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if (ret != 0)
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aea->aea_cbdata->retval = ret;
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zpool_close(zhp);
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} else {
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aea->aea_cbdata->retval = 1;
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}
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free(aea->aea_poolname);
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free(aea);
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}
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/*
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* Process an export request in parallel
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*/
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static int
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zpool_export_one_async(zpool_handle_t *zhp, void *data)
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{
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tpool_t *tpool = ((export_cbdata_t *)data)->tpool;
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async_export_args_t *aea = safe_malloc(sizeof (async_export_args_t));
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/* save pool name since zhp will go out of scope */
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aea->aea_poolname = strdup(zpool_get_name(zhp));
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aea->aea_cbdata = data;
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/* ship off actual export to another thread */
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if (tpool_dispatch(tpool, zpool_export_task, (void *)aea) != 0)
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return (errno); /* unlikely */
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else
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return (0);
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}
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/*
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* zpool export [-f] <pool> ...
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*
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@ -2098,17 +2158,33 @@ zpool_do_export(int argc, char **argv)
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cb.force = force;
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cb.hardforce = hardforce;
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cb.tpool = NULL;
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cb.retval = 0;
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argc -= optind;
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argv += optind;
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/* The history will be logged as part of the export itself */
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log_history = B_FALSE;
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if (do_all) {
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if (argc != 0) {
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(void) fprintf(stderr, gettext("too many arguments\n"));
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usage(B_FALSE);
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}
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return (for_each_pool(argc, argv, B_TRUE, NULL,
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ZFS_TYPE_POOL, B_FALSE, zpool_export_one, &cb));
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cb.tpool = tpool_create(1, 5 * sysconf(_SC_NPROCESSORS_ONLN),
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0, NULL);
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pthread_mutex_init(&cb.mnttab_lock, NULL);
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/* Asynchronously call zpool_export_one using thread pool */
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ret = for_each_pool(argc, argv, B_TRUE, NULL, ZFS_TYPE_POOL,
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B_FALSE, zpool_export_one_async, &cb);
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tpool_wait(cb.tpool);
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tpool_destroy(cb.tpool);
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(void) pthread_mutex_destroy(&cb.mnttab_lock);
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return (ret | cb.retval);
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}
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/* check arguments */
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@ -243,6 +243,7 @@ struct spa {
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dsl_pool_t *spa_dsl_pool;
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boolean_t spa_is_initializing; /* true while opening pool */
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boolean_t spa_is_exporting; /* true while exporting pool */
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kthread_t *spa_export_thread; /* valid during pool export */
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kthread_t *spa_load_thread; /* loading, no namespace lock */
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metaslab_class_t *spa_normal_class; /* normal data class */
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metaslab_class_t *spa_log_class; /* intent log data class */
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@ -8143,11 +8143,11 @@ l2arc_dev_get_next(void)
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ASSERT3P(next, !=, NULL);
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} while (vdev_is_dead(next->l2ad_vdev) || next->l2ad_rebuild ||
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next->l2ad_trim_all);
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next->l2ad_trim_all || next->l2ad_spa->spa_is_exporting);
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/* if we were unable to find any usable vdevs, return NULL */
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if (vdev_is_dead(next->l2ad_vdev) || next->l2ad_rebuild ||
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next->l2ad_trim_all)
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next->l2ad_trim_all || next->l2ad_spa->spa_is_exporting)
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next = NULL;
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l2arc_dev_last = next;
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@ -34,6 +34,7 @@
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* Copyright (c) 2017, Intel Corporation.
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* Copyright (c) 2021, Colm Buckley <colm@tuatha.org>
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* Copyright (c) 2023 Hewlett Packard Enterprise Development LP.
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* Copyright (c) 2024, Klara Inc.
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*/
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/*
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@ -1991,7 +1992,8 @@ spa_destroy_aux_threads(spa_t *spa)
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static void
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spa_unload(spa_t *spa)
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{
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ASSERT(MUTEX_HELD(&spa_namespace_lock));
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ASSERT(MUTEX_HELD(&spa_namespace_lock) ||
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spa->spa_export_thread == curthread);
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ASSERT(spa_state(spa) != POOL_STATE_UNINITIALIZED);
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spa_import_progress_remove(spa_guid(spa));
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@ -6955,7 +6957,7 @@ static int
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spa_export_common(const char *pool, int new_state, nvlist_t **oldconfig,
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boolean_t force, boolean_t hardforce)
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{
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int error;
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int error = 0;
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spa_t *spa;
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hrtime_t export_start = gethrtime();
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@ -6979,8 +6981,8 @@ spa_export_common(const char *pool, int new_state, nvlist_t **oldconfig,
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spa->spa_is_exporting = B_TRUE;
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/*
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* Put a hold on the pool, drop the namespace lock, stop async tasks,
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* reacquire the namespace lock, and see if we can export.
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* Put a hold on the pool, drop the namespace lock, stop async tasks
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* and see if we can export.
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*/
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spa_open_ref(spa, FTAG);
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mutex_exit(&spa_namespace_lock);
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@ -6990,10 +6992,18 @@ spa_export_common(const char *pool, int new_state, nvlist_t **oldconfig,
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taskq_wait(spa->spa_zvol_taskq);
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}
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mutex_enter(&spa_namespace_lock);
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spa->spa_export_thread = curthread;
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spa_close(spa, FTAG);
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mutex_exit(&spa_namespace_lock);
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/*
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* At this point we no longer hold the spa_namespace_lock and
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* the spa_export_thread indicates that an export is in progress.
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*/
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if (spa->spa_state == POOL_STATE_UNINITIALIZED)
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goto export_spa;
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/*
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* The pool will be in core if it's openable, in which case we can
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* modify its state. Objsets may be open only because they're dirty,
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@ -7089,6 +7099,10 @@ export_spa:
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if (oldconfig && spa->spa_config)
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*oldconfig = fnvlist_dup(spa->spa_config);
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if (new_state == POOL_STATE_EXPORTED)
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zio_handle_export_delay(spa, gethrtime() - export_start);
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mutex_enter(&spa_namespace_lock);
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if (new_state != POOL_STATE_UNINITIALIZED) {
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if (!hardforce)
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spa_write_cachefile(spa, B_TRUE, B_TRUE, B_FALSE);
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@ -7100,17 +7114,25 @@ export_spa:
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* we make sure to reset the exporting flag.
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*/
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spa->spa_is_exporting = B_FALSE;
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spa->spa_export_thread = NULL;
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}
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if (new_state == POOL_STATE_EXPORTED)
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zio_handle_export_delay(spa, gethrtime() - export_start);
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/*
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* Wake up any waiters on spa_namespace_lock
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* They need to re-attempt a spa_lookup()
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*/
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cv_broadcast(&spa_namespace_cv);
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mutex_exit(&spa_namespace_lock);
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return (0);
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fail:
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mutex_enter(&spa_namespace_lock);
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spa->spa_is_exporting = B_FALSE;
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spa->spa_export_thread = NULL;
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spa_async_resume(spa);
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/* Wake up any waiters on spa_namespace_lock */
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cv_broadcast(&spa_namespace_cv);
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mutex_exit(&spa_namespace_lock);
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return (error);
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}
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@ -27,7 +27,7 @@
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* Copyright (c) 2017 Datto Inc.
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* Copyright (c) 2017, Intel Corporation.
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* Copyright (c) 2019, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
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* Copyright (c) 2023, Klara Inc.
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* Copyright (c) 2023, 2024, Klara Inc.
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*/
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#include <sys/zfs_context.h>
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@ -82,8 +82,8 @@
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* - Check if spa_refcount is zero
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* - Rename a spa_t
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* - add/remove/attach/detach devices
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* - Held for the duration of create/destroy/export
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* - Held at the start and end of import
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* - Held for the duration of create/destroy
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* - Held at the start and end of import and export
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*
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* It does not need to handle recursion. A create or destroy may
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* reference objects (files or zvols) in other pools, but by
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@ -636,8 +636,14 @@ retry:
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if (spa == NULL)
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return (NULL);
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if (spa->spa_load_thread != NULL &&
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spa->spa_load_thread != curthread) {
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/*
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* Avoid racing with import/export, which don't hold the namespace
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* lock for their entire duration.
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*/
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if ((spa->spa_load_thread != NULL &&
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spa->spa_load_thread != curthread) ||
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(spa->spa_export_thread != NULL &&
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spa->spa_export_thread != curthread)) {
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cv_wait(&spa_namespace_cv, &spa_namespace_lock);
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goto retry;
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}
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@ -950,14 +956,15 @@ spa_open_ref(spa_t *spa, const void *tag)
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/*
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* Remove a reference to the given spa_t. Must have at least one reference, or
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* have the namespace lock held.
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* have the namespace lock held or be part of a pool import/export.
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*/
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void
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spa_close(spa_t *spa, const void *tag)
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{
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ASSERT(zfs_refcount_count(&spa->spa_refcount) > spa->spa_minref ||
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MUTEX_HELD(&spa_namespace_lock) ||
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spa->spa_load_thread == curthread);
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spa->spa_load_thread == curthread ||
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spa->spa_export_thread == curthread);
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(void) zfs_refcount_remove(&spa->spa_refcount, tag);
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}
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@ -977,13 +984,15 @@ spa_async_close(spa_t *spa, const void *tag)
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/*
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* Check to see if the spa refcount is zero. Must be called with
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* spa_namespace_lock held. We really compare against spa_minref, which is the
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* number of references acquired when opening a pool
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* spa_namespace_lock held or be the spa export thread. We really
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* compare against spa_minref, which is the number of references
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* acquired when opening a pool
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*/
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boolean_t
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spa_refcount_zero(spa_t *spa)
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{
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ASSERT(MUTEX_HELD(&spa_namespace_lock));
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ASSERT(MUTEX_HELD(&spa_namespace_lock) ||
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spa->spa_export_thread == curthread);
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return (zfs_refcount_count(&spa->spa_refcount) == spa->spa_minref);
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}
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@ -1231,6 +1240,21 @@ spa_vdev_enter(spa_t *spa)
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mutex_enter(&spa->spa_vdev_top_lock);
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mutex_enter(&spa_namespace_lock);
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/*
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* We have a reference on the spa and a spa export could be
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* starting but no longer holding the spa_namespace_lock. So
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* check if there is an export and if so wait. It will fail
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* fast (EBUSY) since we are still holding a spa reference.
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*
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* Note that we can be woken by a different spa transitioning
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* through an import/export, so we must wait for our condition
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* to change before proceeding.
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*/
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while (spa->spa_export_thread != NULL &&
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spa->spa_export_thread != curthread) {
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cv_wait(&spa_namespace_cv, &spa_namespace_lock);
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}
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vdev_autotrim_stop_all(spa);
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return (spa_vdev_config_enter(spa));
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@ -1248,6 +1272,12 @@ spa_vdev_detach_enter(spa_t *spa, uint64_t guid)
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mutex_enter(&spa->spa_vdev_top_lock);
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mutex_enter(&spa_namespace_lock);
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/* See comment in spa_vdev_enter() */
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while (spa->spa_export_thread != NULL &&
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spa->spa_export_thread != curthread) {
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cv_wait(&spa_namespace_cv, &spa_namespace_lock);
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}
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vdev_autotrim_stop_all(spa);
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if (guid != 0) {
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@ -682,7 +682,8 @@ vdev_initialize_stop_wait(spa_t *spa, list_t *vd_list)
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(void) spa;
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vdev_t *vd;
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ASSERT(MUTEX_HELD(&spa_namespace_lock));
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ASSERT(MUTEX_HELD(&spa_namespace_lock) ||
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spa->spa_export_thread == curthread);
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while ((vd = list_remove_head(vd_list)) != NULL) {
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mutex_enter(&vd->vdev_initialize_lock);
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@ -724,7 +725,8 @@ vdev_initialize_stop(vdev_t *vd, vdev_initializing_state_t tgt_state,
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if (vd_list == NULL) {
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vdev_initialize_stop_wait_impl(vd);
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} else {
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ASSERT(MUTEX_HELD(&spa_namespace_lock));
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ASSERT(MUTEX_HELD(&spa_namespace_lock) ||
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vd->vdev_spa->spa_export_thread == curthread);
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list_insert_tail(vd_list, vd);
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}
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}
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@ -756,7 +758,8 @@ vdev_initialize_stop_all(vdev_t *vd, vdev_initializing_state_t tgt_state)
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spa_t *spa = vd->vdev_spa;
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list_t vd_list;
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ASSERT(MUTEX_HELD(&spa_namespace_lock));
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ASSERT(MUTEX_HELD(&spa_namespace_lock) ||
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spa->spa_export_thread == curthread);
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list_create(&vd_list, sizeof (vdev_t),
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offsetof(vdev_t, vdev_initialize_node));
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@ -1087,7 +1087,8 @@ vdev_rebuild_stop_wait(vdev_t *vd)
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{
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spa_t *spa = vd->vdev_spa;
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ASSERT(MUTEX_HELD(&spa_namespace_lock));
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ASSERT(MUTEX_HELD(&spa_namespace_lock) ||
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spa->spa_export_thread == curthread);
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if (vd == spa->spa_root_vdev) {
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for (uint64_t i = 0; i < vd->vdev_children; i++)
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@ -1040,7 +1040,8 @@ vdev_trim_stop_wait(spa_t *spa, list_t *vd_list)
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(void) spa;
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vdev_t *vd;
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ASSERT(MUTEX_HELD(&spa_namespace_lock));
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ASSERT(MUTEX_HELD(&spa_namespace_lock) ||
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spa->spa_export_thread == curthread);
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while ((vd = list_remove_head(vd_list)) != NULL) {
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mutex_enter(&vd->vdev_trim_lock);
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@ -1079,7 +1080,8 @@ vdev_trim_stop(vdev_t *vd, vdev_trim_state_t tgt_state, list_t *vd_list)
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if (vd_list == NULL) {
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vdev_trim_stop_wait_impl(vd);
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||||
} else {
|
||||
ASSERT(MUTEX_HELD(&spa_namespace_lock));
|
||||
ASSERT(MUTEX_HELD(&spa_namespace_lock) ||
|
||||
vd->vdev_spa->spa_export_thread == curthread);
|
||||
list_insert_tail(vd_list, vd);
|
||||
}
|
||||
}
|
||||
@ -1115,7 +1117,8 @@ vdev_trim_stop_all(vdev_t *vd, vdev_trim_state_t tgt_state)
|
||||
list_t vd_list;
|
||||
vdev_t *vd_l2cache;
|
||||
|
||||
ASSERT(MUTEX_HELD(&spa_namespace_lock));
|
||||
ASSERT(MUTEX_HELD(&spa_namespace_lock) ||
|
||||
spa->spa_export_thread == curthread);
|
||||
|
||||
list_create(&vd_list, sizeof (vdev_t),
|
||||
offsetof(vdev_t, vdev_trim_node));
|
||||
|
||||
@ -430,7 +430,8 @@ tags = ['functional', 'cli_root', 'zpool_events']
|
||||
|
||||
[tests/functional/cli_root/zpool_export]
|
||||
tests = ['zpool_export_001_pos', 'zpool_export_002_pos',
|
||||
'zpool_export_003_neg', 'zpool_export_004_pos']
|
||||
'zpool_export_003_neg', 'zpool_export_004_pos',
|
||||
'zpool_export_parallel_pos', 'zpool_export_parallel_admin']
|
||||
tags = ['functional', 'cli_root', 'zpool_export']
|
||||
|
||||
[tests/functional/cli_root/zpool_get]
|
||||
|
||||
@ -1084,6 +1084,8 @@ nobase_dist_datadir_zfs_tests_tests_SCRIPTS += \
|
||||
functional/cli_root/zpool_export/zpool_export_002_pos.ksh \
|
||||
functional/cli_root/zpool_export/zpool_export_003_neg.ksh \
|
||||
functional/cli_root/zpool_export/zpool_export_004_pos.ksh \
|
||||
functional/cli_root/zpool_export/zpool_export_parallel_admin.ksh \
|
||||
functional/cli_root/zpool_export/zpool_export_parallel_pos.ksh \
|
||||
functional/cli_root/zpool_get/cleanup.ksh \
|
||||
functional/cli_root/zpool_get/setup.ksh \
|
||||
functional/cli_root/zpool_get/vdev_get_001_pos.ksh \
|
||||
|
||||
@ -0,0 +1,72 @@
|
||||
#!/bin/ksh -p
|
||||
#
|
||||
# CDDL HEADER START
|
||||
#
|
||||
# The contents of this file are subject to the terms of the
|
||||
# Common Development and Distribution License (the "License").
|
||||
# You may not use this file except in compliance with the License.
|
||||
#
|
||||
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
||||
# or https://opensource.org/licenses/CDDL-1.0.
|
||||
# See the License for the specific language governing permissions
|
||||
# and limitations under the License.
|
||||
#
|
||||
# When distributing Covered Code, include this CDDL HEADER in each
|
||||
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
||||
# If applicable, add the following below this CDDL HEADER, with the
|
||||
# fields enclosed by brackets "[]" replaced with your own identifying
|
||||
# information: Portions Copyright [yyyy] [name of copyright owner]
|
||||
#
|
||||
# CDDL HEADER END
|
||||
#
|
||||
|
||||
#
|
||||
# Copyright 2007 Sun Microsystems, Inc. All rights reserved.
|
||||
# Use is subject to license terms.
|
||||
#
|
||||
|
||||
#
|
||||
# Copyright (c) 2024 Klara, Inc.
|
||||
#
|
||||
|
||||
. $STF_SUITE/include/libtest.shlib
|
||||
|
||||
#
|
||||
# DESCRIPTION:
|
||||
# Verify that admin commands cannot race a pool export
|
||||
#
|
||||
# STRATEGY:
|
||||
# 1. Create a pool
|
||||
# 2. Import the pool with an injected delay in the background
|
||||
# 3. Execute some admin commands against the pool
|
||||
#
|
||||
|
||||
verify_runnable "global"
|
||||
|
||||
DEVICE_DIR=$TEST_BASE_DIR/dev_export-test
|
||||
|
||||
function cleanup
|
||||
{
|
||||
zinject -c all
|
||||
poolexists $TESTPOOL1 && destroy_pool $TESTPOOL1
|
||||
[[ -d $DEVICE_DIR ]] && log_must rm -rf $DEVICE_DIR
|
||||
}
|
||||
|
||||
log_assert "admin commands cannot race a pool export"
|
||||
|
||||
log_onexit cleanup
|
||||
|
||||
[[ ! -d $DEVICE_DIR ]] && log_must mkdir -p $DEVICE_DIR
|
||||
log_must truncate -s $MINVDEVSIZE ${DEVICE_DIR}/disk0 ${DEVICE_DIR}/disk1
|
||||
|
||||
log_must zpool create -f $TESTPOOL1 mirror ${DEVICE_DIR}/disk0 ${DEVICE_DIR}/disk1
|
||||
|
||||
log_must zinject -P export -s 10 $TESTPOOL1
|
||||
|
||||
log_must zpool export $TESTPOOL1 &
|
||||
|
||||
zpool set comment=hello $TESTPOOL1
|
||||
zpool reguid $TESTPOOL1 &
|
||||
zpool split $TESTPOOL1 &
|
||||
|
||||
log_pass "admin commands cannot race a pool export"
|
||||
@ -0,0 +1,129 @@
|
||||
#!/bin/ksh -p
|
||||
#
|
||||
# CDDL HEADER START
|
||||
#
|
||||
# The contents of this file are subject to the terms of the
|
||||
# Common Development and Distribution License (the "License").
|
||||
# You may not use this file except in compliance with the License.
|
||||
#
|
||||
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
||||
# or https://opensource.org/licenses/CDDL-1.0.
|
||||
# See the License for the specific language governing permissions
|
||||
# and limitations under the License.
|
||||
#
|
||||
# When distributing Covered Code, include this CDDL HEADER in each
|
||||
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
||||
# If applicable, add the following below this CDDL HEADER, with the
|
||||
# fields enclosed by brackets "[]" replaced with your own identifying
|
||||
# information: Portions Copyright [yyyy] [name of copyright owner]
|
||||
#
|
||||
# CDDL HEADER END
|
||||
#
|
||||
|
||||
#
|
||||
# Copyright 2007 Sun Microsystems, Inc. All rights reserved.
|
||||
# Use is subject to license terms.
|
||||
#
|
||||
|
||||
#
|
||||
# Copyright (c) 2024 Klara, Inc.
|
||||
#
|
||||
|
||||
. $STF_SUITE/include/libtest.shlib
|
||||
. $STF_SUITE/tests/functional/cli_root/zpool_import/zpool_import.cfg
|
||||
. $STF_SUITE/tests/functional/cli_root/zpool_import/zpool_import.kshlib
|
||||
|
||||
# test uses 8 vdevs
|
||||
MAX_NUM=8
|
||||
DEVICE_DIR=$TEST_BASE_DIR/dev_import-test
|
||||
|
||||
|
||||
#
|
||||
# DESCRIPTION:
|
||||
# Verify that pool exports can occur in parallel
|
||||
#
|
||||
# STRATEGY:
|
||||
# 1. Create 8 pools
|
||||
# 2. Inject an export delay using zinject
|
||||
# 3. Export half of the pools synchronously to baseline sequential cost
|
||||
# 4. Export the other half asynchronously to demonstrate parallel savings
|
||||
# 6. Import 4 pools
|
||||
# 7. Test zpool export -a
|
||||
#
|
||||
|
||||
verify_runnable "global"
|
||||
|
||||
#
|
||||
# override the minimum sized vdevs
|
||||
#
|
||||
|
||||
POOLNAME="test_pool"
|
||||
|
||||
function cleanup
|
||||
{
|
||||
zinject -c all
|
||||
|
||||
for i in {0..$(($MAX_NUM - 1))}; do
|
||||
poolexists $POOLNAME-$i && destroy_pool $POOLNAME-$i
|
||||
done
|
||||
|
||||
[[ -d $DEVICE_DIR ]] && log_must rm -rf $DEVICE_DIR
|
||||
}
|
||||
|
||||
log_assert "Pool exports can occur in parallel"
|
||||
|
||||
log_onexit cleanup
|
||||
|
||||
[[ ! -d $DEVICE_DIR ]] && log_must mkdir -p $DEVICE_DIR
|
||||
|
||||
#
|
||||
# Create some pools with export delay injectors
|
||||
#
|
||||
for i in {0..$(($MAX_NUM - 1))}; do
|
||||
log_must truncate -s $MINVDEVSIZE ${DEVICE_DIR}/disk$i
|
||||
log_must zpool create $POOLNAME-$i $DEVICE_DIR/disk$i
|
||||
log_must zinject -P export -s 8 $POOLNAME-$i
|
||||
done
|
||||
|
||||
#
|
||||
# Export half of the pools synchronously
|
||||
#
|
||||
SECONDS=0
|
||||
for i in {0..3}; do
|
||||
log_must zpool export $POOLNAME-$i
|
||||
done
|
||||
sequential_time=$SECONDS
|
||||
log_note "sequentially exported 4 pools in $sequential_time seconds"
|
||||
|
||||
#
|
||||
# Export half of the pools in parallel
|
||||
#
|
||||
SECONDS=0
|
||||
for i in {4..7}; do
|
||||
log_must zpool export $POOLNAME-$i &
|
||||
done
|
||||
wait
|
||||
parallel_time=$SECONDS
|
||||
log_note "asyncronously exported 4 pools in $parallel_time seconds"
|
||||
|
||||
log_must test $parallel_time -lt $(($sequential_time / 3))
|
||||
|
||||
#
|
||||
# import 4 pools with export delay injectors
|
||||
#
|
||||
for i in {4..7}; do
|
||||
log_must zpool import -d $DEVICE_DIR/disk$i $POOLNAME-$i
|
||||
log_must zinject -P export -s 8 $POOLNAME-$i
|
||||
done
|
||||
|
||||
#
|
||||
# now test zpool export -a
|
||||
#
|
||||
SECONDS=0
|
||||
log_must zpool export -a
|
||||
parallel_time=$SECONDS
|
||||
log_note "asyncronously exported 4 pools, using '-a', in $parallel_time seconds"
|
||||
|
||||
log_must test $parallel_time -lt $(($sequential_time / 3))
|
||||
|
||||
log_pass "Pool exports occur in parallel"
|
||||
Loading…
Reference in New Issue
Block a user