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| author | Kevin Wolf <kwolf@redhat.com> | 2010-06-07 16:43:22 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2010-06-15 09:41:58 +0200 |
| commit | 68dba0bf455e60061bb3c9c40ef0d82916372664 (patch) | |
| tree | 85b6ee4a42bf2a574823c325a48e6a6f743d111a /block/qcow2-cluster.c | |
| parent | dd5b0d71d660a4e31bdf8bd0d130ce582833db9f (diff) | |
qcow2: Restore L1 entry on l2_allocate failure
If writing the L1 table to disk failed, we need to restore its old content in
memory to avoid inconsistencies.
Reported-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/qcow2-cluster.c')
| -rw-r--r-- | block/qcow2-cluster.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c index 03a9f25799..5760ad6d26 100644 --- a/block/qcow2-cluster.c +++ b/block/qcow2-cluster.c @@ -285,6 +285,7 @@ static int l2_allocate(BlockDriverState *bs, int l1_index, uint64_t **table) return 0; fail: + s->l1_table[l1_index] = old_l2_offset; qcow2_l2_cache_reset(bs); return ret; } |