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Re: [Qemu-devel] [RFC PATCH 0/2] Migration: support working on file:url
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From: |
Daniel P. Berrange |
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Subject: |
Re: [Qemu-devel] [RFC PATCH 0/2] Migration: support working on file:url |
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Date: |
Thu, 21 Jul 2016 13:19:14 +0100 |
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User-agent: |
Mutt/1.6.1 (2016-04-27) |
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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