diff options
| author | Stefan Hajnoczi <stefanha@redhat.com> | 2013-03-04 15:02:31 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2013-03-15 16:07:50 +0100 |
| commit | f6977f15561973d4a67b6aa46da88aa678c505dd (patch) | |
| tree | 6e1cd06c0ddf480d1c8ecb47c29411f611d0fc23 /block | |
| parent | 9991923b262dc35f6dd8393ab4853edd7fc3724f (diff) | |
| download | qemu-f6977f15561973d4a67b6aa46da88aa678c505dd.zip qemu-f6977f15561973d4a67b6aa46da88aa678c505dd.tar.gz qemu-f6977f15561973d4a67b6aa46da88aa678c505dd.tar.bz2 | |
qcow2: flush refcount cache correctly in qcow2_write_snapshots()
Since qcow2 metadata is cached we need to flush the caches, not just the
underlying file. Use bdrv_flush(bs) instead of bdrv_flush(bs->file).
Also add the error return path when bdrv_flush() fails and move the
flush after checking for qcow2_alloc_clusters() failure so that the
qcow2_alloc_clusters() error return value takes precedence.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/qcow2-snapshot.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/block/qcow2-snapshot.c b/block/qcow2-snapshot.c index eb8fcd5..f4719d9 100644 --- a/block/qcow2-snapshot.c +++ b/block/qcow2-snapshot.c @@ -180,11 +180,14 @@ static int qcow2_write_snapshots(BlockDriverState *bs) /* Allocate space for the new snapshot list */ snapshots_offset = qcow2_alloc_clusters(bs, snapshots_size); - bdrv_flush(bs->file); offset = snapshots_offset; if (offset < 0) { return offset; } + ret = bdrv_flush(bs); + if (ret < 0) { + return ret; + } /* Write all snapshots to the new list */ for(i = 0; i < s->nb_snapshots; i++) { |