From 2e3e331710faa8d0b7d70b73e87df1fb6d33d0d3 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Beno=C3=AEt=20Canet?= Date: Thu, 2 Aug 2012 10:22:48 +0200 Subject: [PATCH] block: Use bdrv_get_backing_file_depth() 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 Reviewed-by: Eric Blake Signed-off-by: Luiz Capitulino --- block.c | 3 +++ qapi-schema.json | 9 ++++++--- qmp-commands.hx | 2 ++ 3 files changed, 11 insertions(+), 3 deletions(-) diff --git a/block.c b/block.c index 1206bba84d..24323c11d0 100644 --- a/block.c +++ b/block.c @@ -2450,6 +2450,9 @@ BlockInfoList *qmp_query_block(Error **errp) info->value->inserted->backing_file = g_strdup(bs->backing_file); } + info->value->inserted->backing_file_depth = + bdrv_get_backing_file_depth(bs); + if (bs->io_limits_enabled) { info->value->inserted->bps = bs->io_limits.bps[BLOCK_IO_LIMIT_TOTAL]; diff --git a/qapi-schema.json b/qapi-schema.json index bc55ed2b6d..b58f5cded8 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -398,6 +398,8 @@ # # @backing_file: #optional the name of the backing file (for copy-on-write) # +# @backing_file_depth: number of files in the backing file chain (since: 1.2) +# # @encrypted: true if the backing device is encrypted # # @bps: total throughput limit in bytes per second is specified @@ -418,9 +420,10 @@ ## { 'type': 'BlockDeviceInfo', 'data': { 'file': 'str', 'ro': 'bool', 'drv': 'str', - '*backing_file': 'str', 'encrypted': 'bool', - 'bps': 'int', 'bps_rd': 'int', 'bps_wr': 'int', - 'iops': 'int', 'iops_rd': 'int', 'iops_wr': 'int'} } + '*backing_file': 'str', 'backing_file_depth': 'int', + 'encrypted': 'bool', 'bps': 'int', 'bps_rd': 'int', + 'bps_wr': 'int', 'iops': 'int', 'iops_rd': 'int', + 'iops_wr': 'int'} } ## # @BlockDeviceIoStatus: diff --git a/qmp-commands.hx b/qmp-commands.hx index e3cf3c5a1a..ac466382c0 100644 --- a/qmp-commands.hx +++ b/qmp-commands.hx @@ -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,