qemu-img: add image fragmentation statistics
Discussion can be found at:
http://patchwork.ozlabs.org/patch/128730/
This patch add image fragmentation statistics while using qemu-img check.
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>
diff --git a/block.h b/block.h
index c51ab16..ea12f5d 100644
--- a/block.h
+++ b/block.h
@@ -17,6 +17,12 @@
int64_t vm_state_offset;
} BlockDriverInfo;
+typedef struct BlockFragInfo {
+ uint64_t allocated_clusters;
+ uint64_t total_clusters;
+ uint64_t fragmented_clusters;
+} BlockFragInfo;
+
typedef struct QEMUSnapshotInfo {
char id_str[128]; /* unique snapshot id */
/* the following fields are informative. They are not needed for
@@ -175,6 +181,7 @@
int corruptions;
int leaks;
int check_errors;
+ BlockFragInfo bfi;
} BdrvCheckResult;
int bdrv_check(BlockDriverState *bs, BdrvCheckResult *res);
diff --git a/qemu-img.c b/qemu-img.c
index 0e48b35..4de48ba 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -428,6 +428,13 @@
}
}
+ if (result.bfi.total_clusters != 0 && result.bfi.allocated_clusters != 0) {
+ printf("%" PRId64 "/%" PRId64 "= %0.2f%% allocated, %0.2f%% fragmented\n",
+ result.bfi.allocated_clusters, result.bfi.total_clusters,
+ result.bfi.allocated_clusters * 100.0 / result.bfi.total_clusters,
+ result.bfi.fragmented_clusters * 100.0 / result.bfi.allocated_clusters);
+ }
+
bdrv_delete(bs);
if (ret < 0 || result.check_errors) {
@@ -716,7 +723,7 @@
ret = -1;
goto out;
}
-
+
qemu_progress_init(progress, 2.0);
qemu_progress_print(0, 100);
