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Re: [Qemu-devel] Reopen file descriptors on 'cont' command

From: Stefan Hajnoczi
Subject: Re: [Qemu-devel] Reopen file descriptors on 'cont' command
Date: Fri, 6 Mar 2015 11:19:50 -0600
User-agent: Mutt/1.5.23 (2014-03-12)

On Wed, Feb 25, 2015 at 09:32:18PM -0300, Christopher Pereira wrote:
> Does qemu reopen files on a 'cont' command?
> When working with images on a gluster volume, file descriptors may get into
> a bad state because of network timeouts, remounting a share, etc...and
> reinitializing file descriptors may be usefull to get paused VMs up again.
> Related BZ:
> https://bugzilla.redhat.com/show_bug.cgi?id=1058300

No, QEMU doesn't reopen file descriptors.

This can be challenging because QEMU supports file descriptor passing,
which is used when the QEMU process is isolated using SELinux so it
cannot open files itself.  Reopening would require new file descriptors
passed in from the management tool.


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