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[Qemu-block] [PATCH for-next 4/6] blkdebug: Add "none" event
From: |
Max Reitz |
Subject: |
[Qemu-block] [PATCH for-next 4/6] blkdebug: Add "none" event |
Date: |
Mon, 3 Dec 2018 18:52:09 +0100 |
Together with @iotypes and @sector, this can be used to trap e.g. the
first read or write access to a certain sector without having to know
what happens internally in the block layer, i.e. which "real" events
happen right before such an access.
Signed-off-by: Max Reitz <address@hidden>
---
qapi/block-core.json | 4 +++-
block/blkdebug.c | 2 ++
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 469d889753..045206196b 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -3004,6 +3004,8 @@
#
# @cor_write: a write due to copy-on-read (since 2.11)
#
+# @none: triggers once at creation of the blkdebug node (since 4.0)
+#
# Since: 2.9
##
{ 'enum': 'BlkdebugEvent', 'prefix': 'BLKDBG',
@@ -3022,7 +3024,7 @@
'pwritev_rmw_tail', 'pwritev_rmw_after_tail', 'pwritev',
'pwritev_zero', 'pwritev_done', 'empty_image_prepare',
'l1_shrink_write_table', 'l1_shrink_free_l2_clusters',
- 'cor_write'] }
+ 'cor_write', 'none' ] }
##
# @BlkdebugIOType:
diff --git a/block/blkdebug.c b/block/blkdebug.c
index d15b6c5fef..51f07648ba 100644
--- a/block/blkdebug.c
+++ b/block/blkdebug.c
@@ -491,6 +491,8 @@ static int blkdebug_open(BlockDriverState *bs, QDict
*options, int flags,
goto out;
}
+ bdrv_debug_event(bs, BLKDBG_NONE);
+
ret = 0;
out:
if (ret < 0) {
--
2.19.2
- [Qemu-block] [PATCH for-next 0/6] qemu-img: Add salvaging mode to convert, Max Reitz, 2018/12/03
- [Qemu-block] [PATCH for-next 1/6] qemu-img: Move quiet into ImgConvertState, Max Reitz, 2018/12/03
- [Qemu-block] [PATCH for-next 5/6] blkdebug: Inject errors on .bdrv_co_block_status(), Max Reitz, 2018/12/03
- [Qemu-block] [PATCH for-next 4/6] blkdebug: Add "none" event,
Max Reitz <=
- [Qemu-block] [PATCH for-next 3/6] blkdebug: Add @iotype error option, Max Reitz, 2018/12/03
- [Qemu-block] [PATCH for-next 2/6] qemu-img: Add salvaging mode to convert, Max Reitz, 2018/12/03
- [Qemu-block] [PATCH for-next 6/6] iotests: Test qemu-img convert --salvage, Max Reitz, 2018/12/03
- Re: [Qemu-block] [Qemu-devel] [PATCH for-next 0/6] qemu-img: Add salvaging mode to convert, no-reply, 2018/12/03