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Re: [Qemu-devel] [Bug 1396052] [NEW] migration failed when running BurnI
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [Bug 1396052] [NEW] migration failed when running BurnInTest in guest |
Date: |
Tue, 2 Dec 2014 15:10:54 +0000 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
On Thu, Nov 27, 2014 at 02:50:59PM +0530, Amit Shah wrote:
> On (Tue) 25 Nov 2014 [09:32:58], z08687 wrote:
> > Public bug reported:
> >
> > Hi,
> > I found a live migration problem and have found out the reason, but I can't
> > fix it up myself. I really need help.
> > When live migration vm and it's block device in save time, it will occur
> > probabilistic .
> >
> > Step:
> > 1. start a windows vm,and run burnInTest(it will write dirty data to block
> > device in migration)
> > 2. migrate vm with it's block device.
> > 3. a few minutes later, dest vm was killed and migration will be failed
> > (probabilistic )
>
> That's a nice test case, as well as good analysis.
This is a known issue:
https://lists.gnu.org/archive/html/qemu-devel/2014-09/msg02959.html
Please try this patch:
commit 7ea2d269cb84ca7a2f4b7c3735634176f7c1dc35
Author: Alexey Kardashevskiy <address@hidden>
Date: Thu Oct 9 13:50:46 2014 +1100
block/migration: Disable cache invalidate for incoming migration
Stefan
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Stefan Hajnoczi <=