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| 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.c | |
| parent | 93a3642efcadf4ad6045ccea38a05ff5297dfe26 (diff) | |
| download | qemu-8b24cd141549b5b264baeddd4e72902cfb5de23b.zip qemu-8b24cd141549b5b264baeddd4e72902cfb5de23b.tar.gz qemu-8b24cd141549b5b264baeddd4e72902cfb5de23b.tar.bz2 | |
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.c')
| -rw-r--r-- | block/qcow2.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/block/qcow2.c b/block/qcow2.c index 78aeb1f..286640c 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -1775,6 +1775,8 @@ static coroutine_fn int qcow2_handle_l2meta(BlockDriverState *bs, if (ret) { goto out; } + } else { + qcow2_alloc_cluster_abort(bs, l2meta); } /* Take the request off the list of running requests */ |