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From: "Daniel P. Berrange" <berrange@redhat.com>
To: zhanghailiang <zhang.zhanghailiang@huawei.com>
Cc: qemu-devel@nongnu.org, amit.shah@redhat.com,
	peter.huangpeng@huawei.com, dgilbert@redhat.com,
	quintela@redhat.com
Subject: Re: [Qemu-devel] [RFC PATCH 0/2] Migration: support working on file:url
Date: Thu, 21 Jul 2016 13:19:14 +0100	[thread overview]
Message-ID: <20160721121914.GG13528@redhat.com> (raw)
In-Reply-To: <1469077560-20620-1-git-send-email-zhang.zhanghailiang@huawei.com>

On Thu, Jul 21, 2016 at 01:05:58PM +0800, zhanghailiang wrote:
> It is more simple to use file:url to migrate VM into file.
> Besides, it will be used in memory snapshot.

NB, you can already migrate into a file

   "exec:/bin/cat > /path/to/file"

and likewise

  qemu -incoming "exec:/bin/cat /path/to/file"

This avoids the problem with POSIX I/O on plain files not actually
supporting O_NONBLOCK in any sensible manner, which your file:
suggestion suffers from.

Regards,
Daniel
-- 
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  parent reply	other threads:[~2016-07-21 12:19 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-21  5:05 [Qemu-devel] [RFC PATCH 0/2] Migration: support working on file:url zhanghailiang
2016-07-21  5:05 ` [Qemu-devel] [RFC PATCH 1/2] migration: Allow the migrate command to work on file:urls zhanghailiang
2016-07-21 12:05   ` Dr. David Alan Gilbert
2016-07-21 12:13   ` Daniel P. Berrange
2016-07-21  5:06 ` [Qemu-devel] [RFC PATCH 2/2] migration: Allow -incoming to work on file: urls zhanghailiang
2016-07-21 12:07   ` Dr. David Alan Gilbert
2016-07-21 12:19 ` Daniel P. Berrange [this message]
2016-07-21 17:41   ` [Qemu-devel] [RFC PATCH 0/2] Migration: support working on file:url Dr. David Alan Gilbert
2016-07-22  8:04     ` Daniel P. Berrange
2016-07-22  6:28   ` Hailiang Zhang

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