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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 /hmp-commands.hx
parentab1859218a95977dc6881fcccce328d8146a6bdb (diff)
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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 'hmp-commands.hx')
-rw-r--r--hmp-commands.hx5
1 files changed, 3 insertions, 2 deletions
diff --git a/hmp-commands.hx b/hmp-commands.hx
index f8d855e..79a9195 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -860,9 +860,10 @@ ETEXI
.args_type = "pci_addr:s,opts:s",
.params = "[[<domain>:]<bus>:]<slot>\n"
"[file=file][,if=type][,bus=n]\n"
- "[,unit=m][,media=d][index=i]\n"
+ "[,unit=m][,media=d][,index=i]\n"
"[,cyls=c,heads=h,secs=s[,trans=t]]\n"
- "[snapshot=on|off][,cache=on|off]",
+ "[,snapshot=on|off][,cache=on|off]\n"
+ "[,readonly=on|off][,copy-on-read=on|off]",
.help = "add drive to PCI storage controller",
.mhandler.cmd = drive_hot_add,
},