[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH 00/10] Quorum disk image corruption resiliency
From: |
Benoît Canet |
Subject: |
Re: [Qemu-devel] [PATCH 00/10] Quorum disk image corruption resiliency |
Date: |
Fri, 10 Aug 2012 19:45:51 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
Le Wednesday 08 Aug 2012 à 15:55:58 (+0100), Stefan Hajnoczi a écrit :
> On Tue, Aug 7, 2012 at 2:44 PM, Benoît Canet <address@hidden> wrote:
> > This patchset create a block driver implementing a quorum using three qemu
> > disk
> > images. Writes are mirrored on the three files.
> > For the reading part the three files are read at the same time and a vote is
> > done to determine which is the majority qiov version. It then return this
> > majority version to the upper layers.
> > When three differents versions of the data are returned by the lower layer
> > the
> > quorum is broken and the read return -EIO.
>
> If you make the quorum setting configurable, then this can replace
> blkverify. n=2 is blkverify, n=3 is your current patch series, n/m is
> also possible where n=number of mirrors and m=threshold needed to
> achieve quorum.
I am working on making the quorum settings configurable.
I will post the new patchset next week.
Benoît
>
> Stefan
>
- Re: [Qemu-devel] [RFC V2 06/10] quorum: Add quorum_aio_writev and its dependencies., (continued)
[Qemu-devel] [RFC V2 09/10] quorum: Add quorum_aio_readv., Benoît Canet, 2012/08/07
[Qemu-devel] [RFC V2 07/10] blkverify: Make blkverify_iovec_clone() and blkverify_iovec_compare() public, Benoît Canet, 2012/08/07
[Qemu-devel] [RFC V2 10/10] quorum: Add quorum mechanism., Benoît Canet, 2012/08/07
Re: [Qemu-devel] [PATCH 00/10] Quorum disk image corruption resiliency, Stefan Hajnoczi, 2012/08/08
- Re: [Qemu-devel] [PATCH 00/10] Quorum disk image corruption resiliency,
Benoît Canet <=