From: Stefan Hajnoczi <stefanha@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
qemu-devel@nongnu.org, kwolf@redhat.com, imain@redhat.com,
rjones@redhat.com, roliveri@redhat.com, obarenbo@redhat.com,
pmyers@redhat.com, armbru@redhat.com, eblake@redhat.com,
hbrock@redhat.com
Subject: Re: [Qemu-devel] [RFC PATCH 0/3] Point-in-time snapshot exporting with drive-backup
Date: Thu, 27 Jun 2013 10:17:50 +0200 [thread overview]
Message-ID: <20130627081750.GF13780@stefanha-thinkpad.redhat.com> (raw)
In-Reply-To: <20130626073119.GB20711@t430s.nay.redhat.com>
On Wed, Jun 26, 2013 at 03:31:19PM +0800, Fam Zheng wrote:
> On Wed, 06/26 09:23, Paolo Bonzini wrote:
> > Il 26/06/2013 05:59, Fam Zheng ha scritto:
> > This leads to another observation: a sync:'none' block-backup job
> > probably should never complete, and should instead go on until explicit
> > cancellation. This is because the job does no background writes, and
> > thus completion would only happen after the guest has written the whole
> > disk. Writing the whole disk is rare enough that it will likely cause
> > bugs in the clients. It is easier just to never complete the job.
> >
>
> Yes, the sync mode none will simply run forever until cancelled.
There is a dedicated command to successfully complete a job:
block-job-complete
Stefan
next prev parent reply other threads:[~2013-06-27 8:17 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-26 3:59 [Qemu-devel] [RFC PATCH 0/3] Point-in-time snapshot exporting with drive-backup Fam Zheng
2013-06-26 3:59 ` [Qemu-devel] [RFC PATCH 1/3] block: add target-id option to drive-backup QMP command Fam Zheng
2013-06-27 8:15 ` Stefan Hajnoczi
2013-06-27 9:41 ` Fam Zheng
2013-06-27 10:57 ` Paolo Bonzini
2013-06-27 11:37 ` Fam Zheng
2013-06-27 11:40 ` Paolo Bonzini
2013-06-28 2:17 ` Fam Zheng
2013-06-26 3:59 ` [Qemu-devel] [RFC PATCH 2/3] block: assign backing relationship in drive-backup Fam Zheng
2013-06-26 7:15 ` Paolo Bonzini
2013-06-26 3:59 ` [Qemu-devel] [RFC PATCH 3/3] nbd: don't get ref if bs has no drive Fam Zheng
2013-06-26 7:23 ` [Qemu-devel] [RFC PATCH 0/3] Point-in-time snapshot exporting with drive-backup Paolo Bonzini
2013-06-26 7:31 ` Fam Zheng
2013-06-27 8:17 ` Stefan Hajnoczi [this message]
2013-06-27 10:06 ` Paolo Bonzini
2013-06-27 13:39 ` Stefan Hajnoczi
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