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qcow2: More checks for qemu-img check

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Implement some more refcount block related checks

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Kevin Wolf 2010-02-23 16:40:54 +01:00 committed by Anthony Liguori
parent 92dcb59fd4
commit 746c3cb5d5
1 changed files with 12 additions and 0 deletions
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12
block/qcow2-refcount.c
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@ -1065,9 +1065,21 @@ int qcow2_check_refcounts(BlockDriverState *bs)
for(i = 0; i < s->refcount_table_size; i++) {
int64_t offset;
offset = s->refcount_table[i];
/* Refcount blocks are cluster aligned */
if (offset & (s->cluster_size - 1)) {
fprintf(stderr, "ERROR refcount block %d is not "
"cluster aligned; refcount table entry corrupted\n", i);
errors++;
}
if (offset != 0) {
errors += inc_refcounts(bs, refcount_table, nb_clusters,
offset, s->cluster_size);
if (refcount_table[offset / s->cluster_size] != 1) {
fprintf(stderr, "ERROR refcount block %d refcount=%d\n",
i, refcount_table[offset / s->cluster_size]);
}
}
}