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Speed up zvol import and export speed

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Speed up import and export speed by:

* Add system delay taskq
* Parallel prefetch zvol dnodes during zvol_create_minors
* Parallel zvol_free during zvol_remove_minors
* Reduce list linear search using ida and hash

Reviewed-by: Boris Protopopov <boris.protopopov@actifio.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Chunwei Chen <david.chen@osnexus.com>
Closes #5433
This commit is contained in:
Brian Behlendorf
2016-12-08 14:05:02 -07:00
committed by GitHub
parent 27f2b90d3e 899662e344
commit f95e647891
8 changed files with 205 additions and 90 deletions
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module/zfs/spa_misc.c
+1 -1
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@@ -530,7 +530,7 @@ spa_deadman(void *arg)
if (zfs_deadman_enabled)
vdev_deadman(spa->spa_root_vdev);
spa->spa_deadman_tqid = taskq_dispatch_delay(system_taskq,
spa->spa_deadman_tqid = taskq_dispatch_delay(system_delay_taskq,
spa_deadman, spa, TQ_SLEEP, ddi_get_lbolt() +
NSEC_TO_TICK(spa->spa_deadman_synctime));
}