From: Eric Blake <eblake@redhat.com>
To: Kevin Wolf <kwolf@redhat.com>
Cc: "Benoît Canet" <benoit.canet@irqsave.net>,
"Fam Zheng" <famz@redhat.com>,
"Stefan Hajnoczi" <stefanha@gmail.com>,
"Jeff Cody" <jcody@redhat.com>,
qemu-devel <qemu-devel@nongnu.org>,
"Max Reitz" <mreitz@redhat.com>,
"Stefan Hajnoczi" <stefanha@redhat.com>
Subject: Re: [Qemu-devel] [RFC] qcow2 journalling draft
Date: Thu, 05 Sep 2013 09:56:43 -0600 [thread overview]
Message-ID: <5228A9BB.2040503@redhat.com> (raw)
In-Reply-To: <20130905152002.GH2826@dhcp-200-207.str.redhat.com>
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On 09/05/2013 09:20 AM, Kevin Wolf wrote:
>
> One additional thought that might make the thing a bit more interesting:
> Sequence numbers can wrap around as well.
On the other hand, if sequence numbers are 64-bit, the number of
operations required to cause a wrap far exceeds the expected lifetime of
any of us on this list, and we can safely assume it to be a non-issue.
(There's other places in qemu where we intentionally have an abort() if
a 64-bit number would wrap...)
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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next prev parent reply other threads:[~2013-09-05 15:56 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-03 13:45 [Qemu-devel] [RFC] qcow2 journalling draft Kevin Wolf
2013-09-03 14:43 ` Benoît Canet
2013-09-04 8:03 ` Stefan Hajnoczi
2013-09-04 9:37 ` Benoît Canet
2013-09-04 9:39 ` Kevin Wolf
2013-09-04 9:55 ` Benoît Canet
2013-09-05 9:24 ` Stefan Hajnoczi
2013-09-05 15:26 ` Benoît Canet
2013-09-06 7:27 ` Kevin Wolf
2013-09-15 18:23 ` Benoît Canet
2013-09-05 9:21 ` Stefan Hajnoczi
2013-09-05 11:18 ` Kevin Wolf
2013-09-05 14:55 ` Stefan Hajnoczi
2013-09-05 15:20 ` Kevin Wolf
2013-09-05 15:56 ` Eric Blake [this message]
2013-09-06 9:20 ` Fam Zheng
2013-09-06 9:57 ` Kevin Wolf
2013-09-06 10:02 ` Fam Zheng
2013-09-04 8:32 ` Max Reitz
2013-09-04 10:12 ` Kevin Wolf
2013-09-05 9:35 ` Stefan Hajnoczi
2013-09-05 11:50 ` Kevin Wolf
2013-09-05 12:08 ` Benoît Canet
2013-09-06 9:59 ` Fam Zheng
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