From: Greg Kurz <gkurz@linux.vnet.ibm.com>
To: "Richard W.M. Jones" <rjones@redhat.com>
Cc: kwolf@redhat.com, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] qcow2, lazy_refcounts and killing qemu
Date: Mon, 1 Sep 2014 16:30:38 +0200 [thread overview]
Message-ID: <20140901163038.4c30e526@bahia.local> (raw)
In-Reply-To: <20140901141928.GW1302@redhat.com>
On Mon, 1 Sep 2014 15:19:28 +0100
"Richard W.M. Jones" <rjones@redhat.com> wrote:
> A test case, attached.
>
> Note that you have to look at the output of the final qemu-img info
> command. In the case where it goes wrong, the 'backing file:' and
> 'backing file format:' lines disappear completely. In the case where
> the bug is not reproduced, these lines are still present.
>
> It's 100% reproducible for me when lazy_refcounts=on, and 0%
> reproducible when lazy_refcounts=off.
>
> BUT it only occurs if the backing file is a remote source (nbd:... in
> this case), not if the backing file is a plain file. Make of that
> what you will.
>
> Rich.
>
Thanks. I'll try that.
--
Gregory Kurz kurzgreg@fr.ibm.com
gkurz@linux.vnet.ibm.com
Software Engineer @ IBM/Meiosys http://www.ibm.com
Tel +33 (0)562 165 496
"Anarchy is about taking complete responsibility for yourself."
Alan Moore.
next prev parent reply other threads:[~2014-09-01 14:31 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-30 14:53 [Qemu-devel] qcow2, lazy_refcounts and killing qemu Richard W.M. Jones
2014-09-01 12:41 ` Greg Kurz
2014-09-01 13:07 ` Richard W.M. Jones
2014-09-01 14:19 ` Richard W.M. Jones
2014-09-01 14:23 ` Richard W.M. Jones
2014-09-01 14:30 ` Greg Kurz [this message]
2014-09-05 15:39 ` Stefan Hajnoczi
2014-09-05 17:41 ` Richard W.M. Jones
2014-09-08 7:16 ` Markus Armbruster
2014-09-08 18:29 ` Max Reitz
2014-09-08 9:57 ` Stefan Hajnoczi
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20140901163038.4c30e526@bahia.local \
--to=gkurz@linux.vnet.ibm.com \
--cc=kwolf@redhat.com \
--cc=qemu-devel@nongnu.org \
--cc=rjones@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).