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[Qemu-devel] [v8 Patch 1/6]Qemu: Enhance "info block" to display host ca
From: |
Supriya Kannery |
Subject: |
[Qemu-devel] [v8 Patch 1/6]Qemu: Enhance "info block" to display host cache setting |
Date: |
Sun, 30 Oct 2011 16:03:54 +0530 |
Enhance "info block" to display hostcache setting for each
block device.
Example:
(qemu) info block
ide0-hd0: removable=0 file=../sles11-32.raw ro=0 drv=raw encrypted=0
Enhanced to display "hostcache" setting:
(qemu) info block
ide0-hd0: removable=0 hostcache=1 file=../sles11-32.raw ro=0 drv=raw encrypted=0
Signed-off-by: Supriya Kannery <address@hidden>
---
block.c | 20 ++++++++++++++++----
qmp-commands.hx | 2 ++
2 files changed, 18 insertions(+), 4 deletions(-)
Index: qemu/qmp-commands.hx
===================================================================
--- qemu.orig/qmp-commands.hx
+++ qemu/qmp-commands.hx
@@ -1142,6 +1142,7 @@ Each json-object contain the following:
- "locked": true if the device is locked, false otherwise (json-bool)
- "tray-open": only present if removable, true if the device has a tray,
and it is open (json-bool)
+- "hostcache": true if host pagecache enabled, false otherwise (json-bool)
- "inserted": only present if the device is inserted, it is a json-object
containing the following:
- "file": device file name (json-string)
@@ -1168,6 +1169,7 @@ Example:
"io-status": "ok",
"device":"ide0-hd0",
"locked":false,
+ "hostcache":false,
"removable":false,
"inserted":{
"ro":false,
Index: qemu/block.c
===================================================================
--- qemu.orig/block.c
+++ qemu/block.c
@@ -1841,6 +1841,11 @@ static void bdrv_print_dict(QObject *obj
qdict_get_bool(bs_dict, "tray-open"));
}
+ if (qdict_haskey(bs_dict, "hostcache")) {
+ monitor_printf(mon, " hostcache=%d",
+ qdict_get_bool(bs_dict, "hostcache"));
+ }
+
if (qdict_haskey(bs_dict, "io-status")) {
monitor_printf(mon, " io-status=%s", qdict_get_str(bs_dict,
"io-status"));
}
@@ -1888,10 +1893,12 @@ void bdrv_info(Monitor *mon, QObject **r
QDict *bs_dict;
bs_obj = qobject_from_jsonf("{ 'device': %s, 'type': 'unknown', "
- "'removable': %i, 'locked': %i }",
+ "'removable': %i, 'locked': %i, "
+ "'hostcache': %i }",
bs->device_name,
bdrv_dev_has_removable_media(bs),
- bdrv_dev_is_medium_locked(bs));
+ bdrv_dev_is_medium_locked(bs),
+ !(bs->open_flags & BDRV_O_NOCACHE));
bs_dict = qobject_to_qdict(bs_obj);
if (bdrv_dev_has_removable_media(bs)) {
- [Qemu-devel] [v8 Patch 0/6]Qemu: Host pagecache setting from cmdline and monitor, Supriya Kannery, 2011/10/30
- [Qemu-devel] [v8 Patch 1/6]Qemu: Enhance "info block" to display host cache setting,
Supriya Kannery <=
- [Qemu-devel] [v8 Patch 2/6]Qemu: Error classes for file reopen and data sync failure, Supriya Kannery, 2011/10/30
- [Qemu-devel] [v8 Patch 4/6]Qemu: Add commandline -drive option 'hostcache', Supriya Kannery, 2011/10/30
- [Qemu-devel] [v8 Patch 3/6]Qemu: Cmd "block_set_hostcache" for dynamic cache change, Supriya Kannery, 2011/10/30
- [Qemu-devel] [v8 Patch 6/6]Qemu: raw posix implementation of reopen functions, Supriya Kannery, 2011/10/30
- [Qemu-devel] [v8 Patch 5/6]Qemu: Framework for reopening images safely, Supriya Kannery, 2011/10/30