diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2018-06-28 17:05:45 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2018-06-29 14:20:56 +0200 |
| commit | 8b24cd141549b5b264baeddd4e72902cfb5de23b (patch) | |
| tree | 2856eb7c876ed7578c0620270344b90b4d0bc6f9 /block/qcow2.h | |
| parent | 93a3642efcadf4ad6045ccea38a05ff5297dfe26 (diff) | |
qcow2: Free allocated clusters on write error
If we managed to allocate the clusters, but then failed to write the
data, there's a good chance that we'll still be able to free the
clusters again in order to avoid cluster leaks (the refcounts are
cached, so even if we can't write them out right now, we may be able to
do so when the VM is resumed after a werror=stop/enospc pause).
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Tested-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'block/qcow2.h')
| -rw-r--r-- | block/qcow2.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/block/qcow2.h b/block/qcow2.h index 01b5250415..1c9c0d3631 100644 --- a/block/qcow2.h +++ b/block/qcow2.h @@ -614,6 +614,7 @@ uint64_t qcow2_alloc_compressed_cluster_offset(BlockDriverState *bs, int compressed_size); int qcow2_alloc_cluster_link_l2(BlockDriverState *bs, QCowL2Meta *m); +void qcow2_alloc_cluster_abort(BlockDriverState *bs, QCowL2Meta *m); int qcow2_cluster_discard(BlockDriverState *bs, uint64_t offset, uint64_t bytes, enum qcow2_discard_type type, bool full_discard); |