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Re: [Qemu-devel] [PATCH V19 00/12] Quorum block filter
From: |
Benoît Canet |
Subject: |
Re: [Qemu-devel] [PATCH V19 00/12] Quorum block filter |
Date: |
Fri, 21 Feb 2014 23:58:42 +0100 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
The Friday 21 Feb 2014 à 15:49:15 (-0700), Eric Blake wrote :
> On 02/21/2014 02:21 PM, Benoît Canet wrote:
> > Hi this is the latest version of the quorum block filter.
> >
> > This version fix the qmp events and a small rebase conflict.
> >
> > tested:
> >
> > tested that json qmp string are correct and parse well with python
> >
> > Ran qemu-iotest including 081 ok
> >
> > quorum command line ok
> > quorum command line snapshot transaction ok
> > quorum QMP by reference ok
> > quorum QMP by reference and snapshot transaction ok
> > quorum QMP at once ok
> > quorum QMP at once and snapshot transaction ok
>
> Generic question:
>
> When the quorum detects mismatch but there was still a majority, is
> there a way to request that the quorum correct the odd man out? That
> is, if I have a 2/3 quorum, and files A and B read '1' while C reads
> '2', can the mere act of reading that sector be used to write '1' into C?
>
> Obviously, this should be an optional mode, not enabled by default; but
> I could envision creating a self-healing redundant array via this method.
That's part of the optional features I want to add.
I choose to start small to get it merged faster.
I also plan to modify drive-mirror to do a bdrv_swap when the mirroring is
finished in order to replace a faultly quorum file.
Best regards
Benoît
>
> --
> Eric Blake eblake redhat com +1-919-301-3266
> Libvirt virtualization library http://libvirt.org
>
- Re: [Qemu-devel] [PATCH V19 06/12] quorum: Add quorum mechanism., (continued)
- Re: [Qemu-devel] [PATCH V19 06/12] quorum: Add quorum mechanism., Eric Blake, 2014/02/21
- Re: [Qemu-devel] [PATCH V19 06/12] quorum: Add quorum mechanism., Benoît Canet, 2014/02/21
- Re: [Qemu-devel] [PATCH V19 06/12] quorum: Add quorum mechanism., Kevin Wolf, 2014/02/21
- Re: [Qemu-devel] [PATCH V19 06/12] quorum: Add quorum mechanism., Eric Blake, 2014/02/21
- Re: [Qemu-devel] [PATCH V19 06/12] quorum: Add quorum mechanism., Benoît Canet, 2014/02/21
- Re: [Qemu-devel] [PATCH V19 06/12] quorum: Add quorum mechanism., Eric Blake, 2014/02/21
- Re: [Qemu-devel] [PATCH V19 06/12] quorum: Add quorum mechanism., Eric Blake, 2014/02/21
[Qemu-devel] [PATCH V19 05/12] quorum: Add quorum_aio_readv., Benoît Canet, 2014/02/21
Re: [Qemu-devel] [PATCH V19 00/12] Quorum block filter, Kevin Wolf, 2014/02/21
Re: [Qemu-devel] [PATCH V19 00/12] Quorum block filter, Eric Blake, 2014/02/21
- Re: [Qemu-devel] [PATCH V19 00/12] Quorum block filter,
Benoît Canet <=