diff options
Diffstat (limited to 'block/qcow2-cache.c')
| -rw-r--r-- | block/qcow2-cache.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/block/qcow2-cache.c b/block/qcow2-cache.c index 75746a7..a5baaba 100644 --- a/block/qcow2-cache.c +++ b/block/qcow2-cache.c @@ -62,6 +62,18 @@ static inline int qcow2_cache_get_table_idx(BlockDriverState *bs, return idx; } +static inline const char *qcow2_cache_get_name(BDRVQcow2State *s, Qcow2Cache *c) +{ + if (c == s->refcount_block_cache) { + return "refcount block"; + } else if (c == s->l2_table_cache) { + return "L2 table"; + } else { + /* Do not abort, because this is not critical */ + return "unknown"; + } +} + static void qcow2_cache_table_release(BlockDriverState *bs, Qcow2Cache *c, int i, int num_tables) { @@ -314,9 +326,18 @@ static int qcow2_cache_do_get(BlockDriverState *bs, Qcow2Cache *c, uint64_t min_lru_counter = UINT64_MAX; int min_lru_index = -1; + assert(offset != 0); + trace_qcow2_cache_get(qemu_coroutine_self(), c == s->l2_table_cache, offset, read_from_disk); + if (offset_into_cluster(s, offset)) { + qcow2_signal_corruption(bs, true, -1, -1, "Cannot get entry from %s " + "cache: Offset %#" PRIx64 " is unaligned", + qcow2_cache_get_name(s, c), offset); + return -EIO; + } + /* Check if the table is already cached */ i = lookup_index = (offset / s->cluster_size * 4) % c->size; do { |