From: Brian Behlendorf <behlendorf1@llnl.gov>
Date: Thu, 8 Dec 2016 21:05:02 +0000 (-0700)
Subject: Speed up zvol import and export speed
X-Git-Tag: zfs-0.7.0-rc3~52
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=f95e64789157c2fa373cb424f2b5713be4c8a639;p=zfs

Speed up zvol import and export speed

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
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f95e64789157c2fa373cb424f2b5713be4c8a639