For those error paths which can't be triggered by other debug event, use snapshot debug events.
Signed-off-by: Wenchao Xia <xiaw...@linux.vnet.ibm.com> --- block/qcow2-snapshot.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/block/qcow2-snapshot.c b/block/qcow2-snapshot.c index e0b7a5a..92b87f8 100644 --- a/block/qcow2-snapshot.c +++ b/block/qcow2-snapshot.c @@ -198,6 +198,7 @@ static int qcow2_write_snapshots(BlockDriverState *bs) } + BLKDBG_EVENT(bs->file, BLKDBG_SNAPSHOT_LIST_UPDATE); /* Write all snapshots to the new list */ for(i = 0; i < s->nb_snapshots; i++) { sn = s->snapshots + i; @@ -264,6 +265,7 @@ static int qcow2_write_snapshots(BlockDriverState *bs) header_data.nb_snapshots = cpu_to_be32(s->nb_snapshots); header_data.snapshots_offset = cpu_to_be64(snapshots_offset); + BLKDBG_EVENT(bs->file, BLKDBG_SNAPSHOT_HEADER_UPDATE); ret = bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, nb_snapshots), &header_data, sizeof(header_data)); if (ret < 0) { @@ -375,6 +377,7 @@ int qcow2_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info) l1_table[i] = cpu_to_be64(s->l1_table[i]); } + BLKDBG_EVENT(bs->file, BLKDBG_SNAPSHOT_L1_UPDATE); ret = qcow2_pre_write_overlap_check(bs, QCOW2_OL_DEFAULT, sn->l1_table_offset, s->l1_size * sizeof(uint64_t)); if (ret < 0) { -- 1.7.1