aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorMax Reitz <mreitz@redhat.com>2019-05-07 22:35:05 +0200
committerMax Reitz <mreitz@redhat.com>2019-06-14 14:16:57 +0200
commitf8cec157cb7f04cb247786f8776ebfcebd9b61be (patch)
treea3aad02b9ab200375e62123d9ed110fb0f324007
parent16789db3de64147c7271d30a9d379b2a8aa2b81e (diff)
blkdebug: Add "none" event
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 <mreitz@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-id: 20190507203508.18026-5-mreitz@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
-rw-r--r--block/blkdebug.c2
-rw-r--r--qapi/block-core.json4
2 files changed, 5 insertions, 1 deletions
diff --git a/block/blkdebug.c b/block/blkdebug.c
index 3f3ec11230..1663ed25af 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) {
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 34617a2c7a..60f903afa3 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -3244,6 +3244,8 @@
#
# @cluster_alloc_space: an allocation of file space for a cluster (since 4.1)
#
+# @none: triggers once at creation of the blkdebug node (since 4.1)
+#
# Since: 2.9
##
{ 'enum': 'BlkdebugEvent', 'prefix': 'BLKDBG',
@@ -3262,7 +3264,7 @@
'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', 'cluster_alloc_space'] }
+ 'cor_write', 'cluster_alloc_space', 'none'] }
##
# @BlkdebugIOType: