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block: Use bdrv_get_backing_file_depth()

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Use the dedicated counting function in qmp_query_block in order to
propagate the backing file depth to HMP and add backing_file_depth
to qmp-commands.hx

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
This commit is contained in:
Benoît Canet 2012-08-02 10:22:48 +02:00 • committed by Luiz Capitulino
parent f198fd1c9a
commit 2e3e331710
3 changed files with 11 additions and 3 deletions
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2
qmp-commands.hx
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@ -1317,6 +1317,7 @@ Each json-object contain the following:
"nbd", "parallels", "qcow", "qcow2", "raw",
"tftp", "vdi", "vmdk", "vpc", "vvfat"
- "backing_file": backing file name (json-string, optional)
- "backing_file_depth": number of files in the backing file chain (json-int)
- "encrypted": true if encrypted, false otherwise (json-bool)
- "bps": limit total bytes per second (json-int)
- "bps_rd": limit read bytes per second (json-int)
@ -1345,6 +1346,7 @@ Example:
"drv":"qcow2",
"encrypted":false,
"file":"disks/test.img",
"backing_file_depth":0,
"bps":1000000,
"bps_rd":0,
"bps_wr":0,