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authorStefan Hajnoczi <stefanha@linux.vnet.ibm.com>2011-11-17 13:40:32 +0000
committerKevin Wolf <kwolf@redhat.com>2011-12-05 14:51:38 +0100
commitfb0490f69feb96b7e92457f176dc834ff0b00b09 (patch)
tree78f832101d9988753dac64f1f47946f2fa306a97 /qemu-tech.texi
parentab1859218a95977dc6881fcccce328d8146a6bdb (diff)
block: add -drive copy-on-read=on|off
This patch adds the -drive copy-on-read=on|off command-line option: copy-on-read=on|off copy-on-read is "on" or "off" and enables whether to copy read backing file sectors into the image file. Copy-on-read avoids accessing the same backing file sectors repeatedly and is useful when the backing file is over a slow network. By default copy-on-read is off. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'qemu-tech.texi')
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