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| author | Luiz Capitulino <lcapitulino@redhat.com> | 2014-09-11 10:25:48 -0400 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2014-09-11 17:14:13 +0200 |
| commit | 624ff5736ef9245bb8070400ccaf65857b6d1c38 (patch) | |
| tree | c7c92007710a861fc6d8f75f7f17261688ddc558 | |
| parent | 745a9bb9cdcdcc50219d14704477c5cd678c4a7e (diff) | |
| download | qemu-624ff5736ef9245bb8070400ccaf65857b6d1c38.tar.gz | |
block: extend BLOCK_IO_ERROR with reason string
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 <lcapitulino@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| -rw-r--r-- | block.c | 3 | ||||
| -rw-r--r-- | qapi/block-core.json | 7 |
2 files changed, 8 insertions, 2 deletions
@@ -3647,7 +3647,8 @@ 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 68945c26b2..4064d5bf7d 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 |