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authorDong Xu Wang <wdongxu@linux.vnet.ibm.com>2012-03-15 20:13:32 +0800
committerKevin Wolf <kwolf@redhat.com>2012-04-05 14:54:40 +0200
commit11c9c615c8e776e59ad0c6c6ed00ec7d38b5d865 (patch)
treee4f848972603f5e98a1be2df0e6a580cbd17b63d /block
parentf8111c241afa75544032dcfa23df0699c91f9866 (diff)
downloadhqemu-11c9c615c8e776e59ad0c6c6ed00ec7d38b5d865.zip
hqemu-11c9c615c8e776e59ad0c6c6ed00ec7d38b5d865.tar.gz
qed: image fragmentation statistics
Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block')
-rw-r--r--block/qed-check.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/block/qed-check.c b/block/qed-check.c
index e4a49ce..94327ff 100644
--- a/block/qed-check.c
+++ b/block/qed-check.c
@@ -68,6 +68,7 @@ static unsigned int qed_check_l2_table(QEDCheck *check, QEDTable *table)
{
BDRVQEDState *s = check->s;
unsigned int i, num_invalid = 0;
+ uint64_t last_offset = 0;
for (i = 0; i < s->table_nelems; i++) {
uint64_t offset = table->offsets[i];
@@ -76,6 +77,11 @@ static unsigned int qed_check_l2_table(QEDCheck *check, QEDTable *table)
qed_offset_is_zero_cluster(offset)) {
continue;
}
+ check->result->bfi.allocated_clusters++;
+ if (last_offset && (last_offset + s->header.cluster_size != offset)) {
+ check->result->bfi.fragmented_clusters++;
+ }
+ last_offset = offset;
/* Detect invalid cluster offset */
if (!qed_check_cluster_offset(s, offset)) {
@@ -200,6 +206,9 @@ int qed_check(BDRVQEDState *s, BdrvCheckResult *result, bool fix)
check.used_clusters = g_malloc0(((check.nclusters + 31) / 32) *
sizeof(check.used_clusters[0]));
+ check.result->bfi.total_clusters =
+ (s->header.image_size + s->header.cluster_size - 1) /
+ s->header.cluster_size;
ret = qed_check_l1_table(&check, s->l1_table);
if (ret == 0) {
/* Only check for leaks if entire image was scanned successfully */
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