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[Qemu-devel] [PATCH] block: extend BLOCK_IO_ERROR with reason string
From: |
Luiz Capitulino |
Subject: |
[Qemu-devel] [PATCH] block: extend BLOCK_IO_ERROR with reason string |
Date: |
Thu, 11 Sep 2014 10:25:48 -0400 |
BLOCK_IO_ERROR events are logged by libvirt, which helps with
post mortem analysis of guests. However, one information that
we miss today is a human readable string describing the cause
of the I/O error.
This commit adds that string it to BLOCK_IO_ERROR. Note that
this string is a debugging aid for humans, meaning that it
should not parsed by applications.
Signed-off-by: Luiz Capitulino <address@hidden>
---
This patch applies on top of the following patch:
[PATCH] block: extend BLOCK_IO_ERROR event with nospace indicator
Which has been submitted some time ago and is already applied in the
block tree.
block.c | 3 ++-
qapi/block-core.json | 7 ++++++-
2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/block.c b/block.c
index 460effe..3c9fb33 100644
--- a/block.c
+++ b/block.c
@@ -3648,7 +3648,8 @@ static void send_qmp_error_event(BlockDriverState *bs,
ac = is_read ? IO_OPERATION_TYPE_READ : IO_OPERATION_TYPE_WRITE;
qapi_event_send_block_io_error(bdrv_get_device_name(bs), ac, action,
bdrv_iostatus_is_enabled(bs),
- error == ENOSPC, &error_abort);
+ error == ENOSPC, strerror(error),
+ &error_abort);
}
/* This is done by device models because, while the block layer knows
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 68945c2..4064d5b 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -1593,6 +1593,10 @@
# io-status is present, please see query-block documentation
# for more information (since: 2.2)
#
+# @reason: human readable string describing the error cause.
+# (This field is a debugging aid for humans, it should not
+# be parsed by applications) (since: 2.2)
+#
# Note: If action is "stop", a STOP event will eventually follow the
# BLOCK_IO_ERROR event
#
@@ -1600,7 +1604,8 @@
##
{ 'event': 'BLOCK_IO_ERROR',
'data': { 'device': 'str', 'operation': 'IoOperationType',
- 'action': 'BlockErrorAction', '*nospace': 'bool' } }
+ 'action': 'BlockErrorAction', '*nospace': 'bool',
+ 'reason': 'str' } }
##
# @BLOCK_JOB_COMPLETED
--
1.9.3
- [Qemu-devel] [PATCH] block: extend BLOCK_IO_ERROR with reason string,
Luiz Capitulino <=