Max Reitz 808c4b6f30 qcow2: Allow "full" discard
Normally, discarded sectors should read back as zero. However, there are
cases in which a sector (or rather cluster) should be discarded as if
they were never written in the first place, that is, reading them should
fall through to the backing file again.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-id: 1414159063-25977-2-git-send-email-mreitz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-11-03 11:41:47 +00:00
2014-11-03 11:41:47 +00:00
2013-04-18 13:50:53 +02:00
2014-11-03 09:48:41 +00:00
2014-09-25 13:34:03 +01:00
2014-11-02 13:30:00 +01:00
2012-09-07 09:02:44 +03:00
2014-06-16 13:24:35 +02:00
2013-09-05 09:40:31 -05:00
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2014-06-23 11:12:28 -04:00
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2014-09-16 11:04:09 +02:00
2013-07-23 02:41:31 +02:00
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2013-08-12 09:15:12 -05:00
2014-09-26 09:34:39 +01:00
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2014-10-24 12:19:11 +01:00
2014-09-22 11:39:45 +01:00
2014-09-22 11:39:45 +01:00
2014-05-24 00:07:29 +04:00
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2013-10-11 09:34:56 -07:00
2014-09-19 17:20:11 +01:00
2014-02-17 11:57:23 -05:00
2014-06-05 16:10:33 +02:00
2014-08-01 18:30:08 +01:00
2013-10-11 09:34:56 -07:00
2014-10-27 14:09:27 +00:00
2014-07-07 10:37:40 +00:00

Read the documentation in qemu-doc.html or on http://wiki.qemu-project.org

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