From mboxrd@z Thu Jan  1 00:00:00 1970
From: Wei Liu <wei.liu2@citrix.com>
Subject: Re: [RFC V10 0/4] domain snapshot document
Date: Fri, 30 Jan 2015 14:08:26 +0000
Message-ID: <20150130140826.GG6334@zion.uk.xensource.com>
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To: Fabio Fantoni <fabio.fantoni@m2r.biz>
Cc: Wei Liu <wei.liu2@citrix.com>, Ian Campbell <Ian.Campbell@citrix.com>, ian.jackson@eu.citrix.com, Chunyan Liu <cyliu@suse.com>, xen-devel@lists.xen.org, jfehlig@suse.com, Euan Harris <euan.harris@citrix.com>, Dave Scott <Dave.Scott@eu.citrix.com>
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On Fri, Jan 30, 2015 at 02:05:05PM +0000, Wei Liu wrote:
> On Fri, Jan 30, 2015 at 03:01:11PM +0100, Fabio Fantoni wrote:
> > Il 30/01/2015 14:38, Wei Liu ha scritto:
> > >On Thu, Jan 29, 2015 at 04:36:43PM +0000, Ian Campbell wrote:
> > >>On Mon, 2015-01-26 at 11:25 +0800, Chunyan Liu wrote:
> > >>>Changes to V9:
> > >>This looks good to me, thanks.
> > >>
> > >>Ian/Wei do you have any comments? xapi folks?
> > >>
> > >Looks good to me.
> > >
> > >Wei.
> > 
> > I looked to the project of domain snapshot and seems good.
> > 
> > I have only a question.
> > I saw this:
> > >Disk snapshot can be created by many external tools, like qemu-img,
> > >vhd-util and lvm, etc.
> > Wouldn't it be good to also use btrfs for external disks snapshot?
> > Even if btrfs snapshots works on subvolumes (directories) it is possible to
> > atomically creates a copy-on-write snapshot of a file (with domUs disks on
> > file, including raw) with btrfs clone operation (reflink systemcall, eg: cp
> > --reflink source dest)
> > 
> 
> I think that "etc." potentially covers all other external tools,
> including btrfs. You can list all possible external tools in the world.
                       ^^^
                       can't
> 
> Wei.
> 
> > 
> > >
> > >_______________________________________________
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> > >Xen-devel@lists.xen.org
> > >http://lists.xen.org/xen-devel