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Fix waiting in ztest_device_removal()

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spa->spa_vdev_removal is created in a sync task that is initiated
via dsl_sync_task_nowait(). Since the task may not run before
spa_vdev_remove() returns, we must wait at least 1 txg to ensure
that the removal struct has been created.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Serapheim Dimitropoulos <serapheim.dimitro@delphix.com>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Closes #8010
This commit is contained in:
Tom Caputi 2018-10-22 09:54:01 -04:00 committed by Brian Behlendorf
parent 7ab96299e5
commit 7d658d29cf
1 changed files with 9 additions and 0 deletions
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9
cmd/ztest/ztest.c
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@ -3549,6 +3549,15 @@ ztest_device_removal(ztest_ds_t *zd, uint64_t id)
ztest_device_removal_active = B_TRUE; ztest_device_removal_active = B_TRUE;
mutex_exit(&ztest_vdev_lock); mutex_exit(&ztest_vdev_lock);
/*
* spa->spa_vdev_removal is created in a sync task that
* is initiated via dsl_sync_task_nowait(). Since the
* task may not run before spa_vdev_remove() returns, we
* must wait at least 1 txg to ensure that the removal
* struct has been created.
*/
txg_wait_synced(spa_get_dsl(spa), 0);
while (spa->spa_vdev_removal != NULL) while (spa->spa_vdev_removal != NULL)
txg_wait_synced(spa_get_dsl(spa), 0); txg_wait_synced(spa_get_dsl(spa), 0);
} else { } else {