From: Jes Sorensen <Jes.Sorensen@redhat.com>
To: Stefan Hajnoczi <stefanha@gmail.com>
Cc: agl@us.ibm.com, qemu-devel@nongnu.org, mdroth@linux.vnet.ibm.com
Subject: Re: [Qemu-devel] [PATCH 0/2] virtagent - fsfreeze support
Date: Tue, 01 Feb 2011 15:28:19 +0100 [thread overview]
Message-ID: <4D481883.3060606@redhat.com> (raw)
In-Reply-To: <AANLkTikz+UNp3VU4JhRfUu28X76pG383vC5FzY9dK51o@mail.gmail.com>
On 02/01/11 15:16, Stefan Hajnoczi wrote:
> On Tue, Feb 1, 2011 at 10:58 AM, <Jes.Sorensen@redhat.com> wrote:
>> From: Jes Sorensen <Jes.Sorensen@redhat.com>
>> This is a first attempt to add fsfreeze support to virtagent. The idea
>> is for the guest agent to walk the list of locally mounted file
>> systems in the guest, and issuing an ioctl to freeze them. The host
>> can then do a live snapshot of the guest, obtaining stable file
>> systems. After the snapshot, the host then calls the thaw function in
>> virtagent, which goes through the list of previously frozen file
>> systems and unfreezes them.
>
> Any plans for a call-out to pre/post freeze and thaw scripts so that
> applications can flush cached data to disk and brace themselves for
> freeze?
Michael and I were discussing this earlier, we need to add it somehow.
It could be done as call-outs from the freeze call, or from separate
agent calls.
Cheers,
Jes
prev parent reply other threads:[~2011-02-01 14:28 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-01 10:58 [Qemu-devel] [PATCH 0/2] virtagent - fsfreeze support Jes.Sorensen
2011-02-01 10:58 ` [Qemu-devel] [PATCH 1/2] Add virtagent file system freeze/thaw Jes.Sorensen
2011-02-01 14:12 ` Stefan Hajnoczi
2011-02-01 14:26 ` Jes Sorensen
2011-02-01 14:34 ` Stefan Hajnoczi
2011-02-01 14:36 ` Jes Sorensen
2011-02-01 14:41 ` Stefan Hajnoczi
2011-02-01 17:22 ` Michael Roth
2011-02-01 14:48 ` [Qemu-devel] " Adam Litke
2011-02-01 15:02 ` Jes Sorensen
2011-02-01 16:50 ` Michael Roth
2011-02-02 8:38 ` Jes Sorensen
2011-02-02 7:57 ` [Qemu-devel] " Stefan Hajnoczi
2011-02-02 8:48 ` Jes Sorensen
2011-02-03 17:41 ` Michael Roth
2011-02-04 6:13 ` Stefan Hajnoczi
2011-02-04 16:27 ` Michael Roth
2011-02-04 16:52 ` Stefan Hajnoczi
2011-02-04 11:03 ` Jes Sorensen
2011-02-04 16:51 ` Michael Roth
2011-02-01 10:58 ` [Qemu-devel] [PATCH 2/2] Add monitor commands for fsfreeze support Jes.Sorensen
2011-02-01 11:25 ` [Qemu-devel] [PATCH 0/2] virtagent - " Vasiliy G Tolstov
2011-02-01 13:02 ` Jes Sorensen
2011-02-01 16:04 ` Richard W.M. Jones
2011-02-01 20:04 ` Vasiliy G Tolstov
2011-02-01 20:17 ` Richard W.M. Jones
2011-02-01 14:16 ` Stefan Hajnoczi
2011-02-01 14:28 ` Jes Sorensen [this message]
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