svn commit: r248572 - in head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs: . sys

[Steven Hartland]

----- Original Message ----- 
From: "Dmitry Morozovsky" <marck at rinet.ru>


> On Thu, 21 Mar 2013, Steven Hartland wrote:
> 
>> Author: smh
>> Date: Thu Mar 21 09:34:41 2013
>> New Revision: 248572
>> URL: http://svnweb.freebsd.org/changeset/base/248572
>> 
>> Log:
>>   Add TRIM support for L2ARC.
>>   
>>   This adds TRIM support to cache vdevs. When ARC buffers are removed
>>   from the L2ARC in arc_hdr_destroy(), arc_release() or l2arc_evict(),
>>   the size previously occupied by the buffer gets scheduled for TRIMming.
>>   As always, actual TRIMs are only issued to the L2ARC after
>>   txg_trim_limit.
>>   
>>   Reviewed by: pjd (mentor)
>>   Approved by: pjd (mentor)
>>   Obtained from: https://github.com/dechamps/zfs/commit/31aae373994fd112256607edba7de2359da3e9dc
>>   MFC after: 2 weeks
> 
> Wow!
> 
> Thank you very much.
> 
> (I possibly missed -- when did TRIM support for regular ZFS MFCed to stable/9?)

We've been doing extensive testing in production of ZFS TRIM and following this
latest set of patches I intend to get TRIM MFC'ed to stable-8 & stable-9 baring
any objections.

    Regards
    Steve

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