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[Qemu-devel] [PATCH v3 4/7] blkdebug: Add "none" event
From: |
Max Reitz |
Subject: |
[Qemu-devel] [PATCH v3 4/7] blkdebug: Add "none" event |
Date: |
Sat, 13 Apr 2019 18:53:40 +0200 |
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 5141e91172..717b13f7f5 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -3215,6 +3215,8 @@
#
# @cor_write: a write due to copy-on-read (since 2.11)
#
+# @none: triggers once at creation of the blkdebug node (since 4.1)
+#
# Since: 2.9
##
{ 'enum': 'BlkdebugEvent', 'prefix': 'BLKDBG',
@@ -3233,7 +3235,7 @@
'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 ca84b12e32..69c608be6f 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) {
--
2.20.1
- [Qemu-devel] [PATCH v3 0/7] qemu-img: Add salvaging mode to convert, Max Reitz, 2019/04/13
- [Qemu-devel] [PATCH v3 1/7] qemu-img: Move quiet into ImgConvertState, Max Reitz, 2019/04/13
- [Qemu-devel] [PATCH v3 2/7] qemu-img: Add salvaging mode to convert, Max Reitz, 2019/04/13
- [Qemu-devel] [PATCH v3 3/7] blkdebug: Add @iotype error option, Max Reitz, 2019/04/13
- [Qemu-devel] [PATCH v3 4/7] blkdebug: Add "none" event,
Max Reitz <=
- [Qemu-devel] [PATCH v3 5/7] blkdebug: Inject errors on .bdrv_co_block_status(), Max Reitz, 2019/04/13
- [Qemu-devel] [PATCH v3 7/7] iotests: Test qemu-img convert -C --salvage, Max Reitz, 2019/04/13
- [Qemu-devel] [PATCH v3 6/7] iotests: Test qemu-img convert --salvage, Max Reitz, 2019/04/13