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qcow2: Clear L2 table cache after write error

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If the L2 table was already updated in cache, but writing it to disk has
failed, we must not continue using the changed version in the cache to stay
consistent with what's on the disk.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2010-04-13 11:43:27 +02:00
parent 29f91781bd
commit 1b7c801b40
1 changed files with 1 additions and 0 deletions
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1
block/qcow2-cluster.c
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@ -696,6 +696,7 @@ int qcow2_alloc_cluster_link_l2(BlockDriverState *bs, QCowL2Meta *m)
ret = write_l2_entries(bs, l2_table, l2_offset, l2_index, m->nb_clusters);
if (ret < 0) {
qcow2_l2_cache_reset(bs);
goto err;
}