From: Anthony Liguori <aliguori@linux.vnet.ibm.com>
To: Kevin Wolf <kwolf@redhat.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>,
Avi Kivity <avi@redhat.com>, Christoph Hellwig <hch@lst.de>,
Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>,
qemu-devel@nongnu.org
Subject: [Qemu-devel] Re: [PATCH v2 6/7] qed: Read/write support
Date: Tue, 12 Oct 2010 10:22:32 -0500 [thread overview]
Message-ID: <4CB47D38.3060602@linux.vnet.ibm.com> (raw)
In-Reply-To: <4CB479D2.7030901@redhat.com>
On 10/12/2010 10:08 AM, Kevin Wolf wrote:
> Otherwise we might destroy data that isn't
> even touched by the guest request in case of a crash.
>
The failure scenarios are either that the cluster is leaked in which
case, the old version of the data is still present or the cluster is
orphaned because the L2 entry is written, in which case the old version
of the data is present.
Are you referring to a scenario where the cluster is partially written
because the data is present in the write cache and the write cache isn't
flushed on power failure?
Regards,
Anthony Liguori
> Kevin
>
next prev parent reply other threads:[~2010-10-12 15:23 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-08 15:48 [Qemu-devel] [PATCH v2 0/7] qed: Add QEMU Enhanced Disk format Stefan Hajnoczi
2010-10-08 15:48 ` [Qemu-devel] [PATCH v2 1/7] qcow2: Make get_bits_from_size() common Stefan Hajnoczi
2010-10-08 18:01 ` [Qemu-devel] " Anthony Liguori
2010-10-08 15:48 ` [Qemu-devel] [PATCH v2 2/7] cutils: Add bytes_to_str() to format byte values Stefan Hajnoczi
2010-10-11 11:09 ` [Qemu-devel] " Kevin Wolf
2010-10-13 9:15 ` [Qemu-devel] " Markus Armbruster
2010-10-13 9:28 ` Kevin Wolf
2010-10-13 10:58 ` Stefan Hajnoczi
2010-10-13 10:25 ` [Qemu-devel] " Avi Kivity
2010-10-08 15:48 ` [Qemu-devel] [PATCH v2 3/7] docs: Add QED image format specification Stefan Hajnoczi
2010-10-10 9:20 ` [Qemu-devel] " Avi Kivity
2010-10-11 10:09 ` Stefan Hajnoczi
2010-10-11 13:04 ` Avi Kivity
2010-10-11 13:42 ` Stefan Hajnoczi
2010-10-11 13:44 ` Avi Kivity
2010-10-11 14:06 ` Stefan Hajnoczi
2010-10-11 14:12 ` Avi Kivity
2010-10-11 15:02 ` Anthony Liguori
2010-10-11 15:24 ` Avi Kivity
2010-10-11 15:41 ` Anthony Liguori
2010-10-11 15:47 ` Avi Kivity
2010-10-11 14:54 ` Anthony Liguori
2010-10-11 14:58 ` Avi Kivity
2010-10-11 15:49 ` Anthony Liguori
2010-10-11 16:02 ` Avi Kivity
2010-10-11 16:10 ` Anthony Liguori
2010-10-12 10:25 ` Avi Kivity
2010-10-11 13:58 ` Kevin Wolf
2010-10-11 15:30 ` Stefan Hajnoczi
2010-10-11 15:39 ` Avi Kivity
2010-10-11 15:46 ` Stefan Hajnoczi
2010-10-11 16:18 ` Anthony Liguori
2010-10-11 17:14 ` Anthony Liguori
2010-10-12 8:07 ` Kevin Wolf
2010-10-12 13:16 ` Stefan Hajnoczi
2010-10-12 13:32 ` Anthony Liguori
2010-10-11 15:50 ` Kevin Wolf
2010-10-08 15:48 ` [Qemu-devel] [PATCH v2 4/7] qed: Add QEMU Enhanced Disk image format Stefan Hajnoczi
2010-10-11 15:16 ` [Qemu-devel] " Kevin Wolf
2010-10-08 15:48 ` [Qemu-devel] [PATCH v2 5/7] qed: Table, L2 cache, and cluster functions Stefan Hajnoczi
2010-10-12 14:44 ` [Qemu-devel] " Kevin Wolf
2010-10-13 13:41 ` Stefan Hajnoczi
2010-10-08 15:48 ` [Qemu-devel] [PATCH v2 6/7] qed: Read/write support Stefan Hajnoczi
2010-10-10 9:10 ` [Qemu-devel] " Avi Kivity
2010-10-11 10:37 ` Stefan Hajnoczi
2010-10-11 13:10 ` Avi Kivity
2010-10-11 13:55 ` Stefan Hajnoczi
2010-10-11 14:57 ` Anthony Liguori
2010-10-12 15:08 ` Kevin Wolf
2010-10-12 15:22 ` Anthony Liguori [this message]
2010-10-12 15:39 ` Kevin Wolf
2010-10-12 15:59 ` Stefan Hajnoczi
2010-10-12 16:16 ` Anthony Liguori
2010-10-12 16:21 ` Avi Kivity
2010-10-13 12:13 ` Stefan Hajnoczi
2010-10-13 13:07 ` Kevin Wolf
2010-10-13 13:24 ` Anthony Liguori
2010-10-13 13:50 ` Avi Kivity
2010-10-13 14:07 ` Stefan Hajnoczi
2010-10-13 14:08 ` Anthony Liguori
2010-10-13 14:10 ` Avi Kivity
2010-10-13 14:11 ` Anthony Liguori
2010-10-13 14:16 ` Avi Kivity
2010-10-13 14:53 ` Anthony Liguori
2010-10-13 15:08 ` Avi Kivity
2010-10-13 15:42 ` Anthony Liguori
2010-10-14 11:06 ` Stefan Hajnoczi
2010-10-13 14:10 ` Anthony Liguori
2010-10-08 15:48 ` [Qemu-devel] [PATCH v2 7/7] qed: Consistency check support Stefan Hajnoczi
2010-10-11 13:21 ` [Qemu-devel] Re: [PATCH v2 0/7] qed: Add QEMU Enhanced Disk format Kevin Wolf
2010-10-11 15:37 ` Stefan Hajnoczi
2010-10-16 7:51 ` [Qemu-devel] " Stefan Hajnoczi
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