Re: BLKZEROOUT not zeroing md dev on VMDK

From	Sitsofe Wheeler <sitsofe@gmail.com>
Newsgroups	linux.kernel
Subject	Re: BLKZEROOUT not zeroing md dev on VMDK
Date	2016-06-15 23:40 +0200
Message-ID	<rKqHw-7SL-21@gated-at.bofh.it> (permalink)
References	(1 earlier) <rDhpE-74E-5@gated-at.bofh.it> <rDhSF-7hl-3@gated-at.bofh.it> <rDmpj-1Gr-1@gated-at.bofh.it> <rF6zM-4aY-13@gated-at.bofh.it> <rKnzX-5Zq-11@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Wed, Jun 15, 2016 at 06:17:37PM +0000, Arvind Kumar wrote:
> It is possibly some race. We saw a WRITE SAME related issue in past
> for which Petr sent out a patch but looks like the patch didn't make
> it. :(
> 
> https://groups.google.com/forum/#!topic/linux.kernel/1WGDSlyY0y0

Indeed - the investigation you folks did is linked to within the
upstream Bugzilla bug (see
https://bugzilla.kernel.org/show_bug.cgi?id=118581#c2 ). Hopefully this
issue will be resolved but there's still some debate over on
http://thread.gmane.org/gmane.linux.kernel/2236800 . The problem is that
it is causing real problems in stable kernels (data not being correctly
zero'd) today...

-- 
Sitsofe | http://sucs.org/~sits/

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Re: BLKZEROOUT not zeroing md dev on VMDK Arvind Kumar <arvindkumar@vmware.com> - 2016-06-15 20:20 +0200
  Re: BLKZEROOUT not zeroing md dev on VMDK Sitsofe Wheeler <sitsofe@gmail.com> - 2016-06-15 23:40 +0200

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