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[Qemu-devel] [PATCH 2/5] block: BLOCK_IO_ERROR QMP event
From: |
Luiz Capitulino |
Subject: |
[Qemu-devel] [PATCH 2/5] block: BLOCK_IO_ERROR QMP event |
Date: |
Tue, 2 Feb 2010 19:10:10 -0200 |
This commit introduces the bdrv_mon_event() function, which
should be called by block subsystems (eg. IDE) when a I/O
error occurs, so that an QMP event is emitted.
The following information is currently provided in the event:
- device name
- operation (ie. "read" or "write")
- action taken (eg. "stop")
Event example:
{ "event": "BLOCK_IO_ERROR",
"data": { "device": "ide0-hd1",
"operation": "write",
"action": "stop" },
"timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
Signed-off-by: Luiz Capitulino <address@hidden>
---
block.c | 29 +++++++++++++++++++++++++++++
block.h | 6 ++++++
2 files changed, 35 insertions(+), 0 deletions(-)
diff --git a/block.c b/block.c
index 1919d19..2913124 100644
--- a/block.c
+++ b/block.c
@@ -1164,6 +1164,35 @@ int bdrv_is_allocated(BlockDriverState *bs, int64_t
sector_num, int nb_sectors,
return bs->drv->bdrv_is_allocated(bs, sector_num, nb_sectors, pnum);
}
+void bdrv_mon_event(const BlockDriverState *bdrv,
+ BlockMonEventAction action, int is_read)
+{
+ QObject *data;
+ const char *action_str;
+
+ switch (action) {
+ case BDRV_ACTION_REPORT:
+ action_str = "report";
+ break;
+ case BDRV_ACTION_IGNORE:
+ action_str = "ignore";
+ break;
+ case BDRV_ACTION_STOP:
+ action_str = "stop";
+ break;
+ default:
+ abort();
+ }
+
+ data = qobject_from_jsonf("{ 'device': %s, 'action': %s, 'operation': %s
}",
+ bdrv->device_name,
+ action_str,
+ is_read ? "read" : "write");
+ monitor_protocol_event(QEVENT_BLOCK_IO_ERROR, data);
+
+ qobject_decref(data);
+}
+
static void bdrv_print_dict(QObject *obj, void *opaque)
{
QDict *bs_dict;
diff --git a/block.h b/block.h
index ecf66c5..a834300 100644
--- a/block.h
+++ b/block.h
@@ -44,6 +44,12 @@ typedef struct QEMUSnapshotInfo {
#define BDRV_SECTOR_SIZE (1 << BDRV_SECTOR_BITS)
#define BDRV_SECTOR_MASK ~(BDRV_SECTOR_SIZE - 1);
+typedef enum {
+ BDRV_ACTION_REPORT, BDRV_ACTION_IGNORE, BDRV_ACTION_STOP
+} BlockMonEventAction;
+
+void bdrv_mon_event(const BlockDriverState *bdrv,
+ BlockMonEventAction action, int is_read);
void bdrv_info_print(Monitor *mon, const QObject *data);
void bdrv_info(Monitor *mon, QObject **ret_data);
void bdrv_stats_print(Monitor *mon, const QObject *data);
--
1.6.6