diff mbox

[1/4,v3] block: add image fragmentation statistics to qemu-img

Message ID 1331813614-3754-1-git-send-email-wdongxu@linux.vnet.ibm.com
State New
Headers show

Commit Message

Robert Wang March 15, 2012, 12:13 p.m. UTC
From: Dong Xu Wang <wdongxu@linux.vnet.ibm.com>

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>
---
 block.h    |    7 +++++++
 qemu-img.c |    9 ++++++++-
 2 files changed, 15 insertions(+), 1 deletions(-)

Comments

Stefan Hajnoczi March 29, 2012, 3:56 p.m. UTC | #1
On Thu, Mar 15, 2012 at 12:45 PM, Stefan Hajnoczi
<stefanha@linux.vnet.ibm.com> wrote:
> On Thu, Mar 15, 2012 at 08:13:31PM +0800, Dong Xu Wang wrote:
>> From: Dong Xu Wang <wdongxu@linux.vnet.ibm.com>
>>
>> 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>
>> ---
>>  block.h    |    7 +++++++
>>  qemu-img.c |    9 ++++++++-
>>  2 files changed, 15 insertions(+), 1 deletions(-)
>
> A minor comment that doesn't require resending:
>
> Please avoid introducing whitespace or reformatting changes in a patch
> that makes other code changes.  Patch 1 changes whitespace in a place
> that is not touched by the rest of your patch, so that change is not
> essential and it's best to leave it out.
>
> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>

Ping?

Stefan
Stefan Hajnoczi March 29, 2012, 4 p.m. UTC | #2
On Thu, Mar 15, 2012 at 12:13 PM, Dong Xu Wang
<wdongxu@linux.vnet.ibm.com> wrote:
> From: Dong Xu Wang <wdongxu@linux.vnet.ibm.com>
>
> 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>
> ---
>  block.h    |    7 +++++++
>  qemu-img.c |    9 ++++++++-
>  2 files changed, 15 insertions(+), 1 deletions(-)

In the future please send a 0/4 email when sending a patch series:

git format-patch --cover-letter ...

The cover letter introduces the patch series and also acts as the
single place where reviewers can reply to say they are happy with the
series.

Kevin: my Reviewed-by: applies to the whole series.

Stefan
Kevin Wolf April 2, 2012, 4:13 p.m. UTC | #3
Am 15.03.2012 13:13, schrieb Dong Xu Wang:
> From: Dong Xu Wang <wdongxu@linux.vnet.ibm.com>
> 
> 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>

Thanks, applied all to the block branch.

Please make the subject line prefix more specific in future commits, I
changed it for this series. For example, don't write "block: foo in qed"
or "block: Add bar to qemu-img", but "qed: foo" and "qemu-img: Add bar".
The "block:" prefix is reserved for changes that are purely in the
generic block layer (mainly block.c, blockdev.c).

Kevin
diff mbox

Patch

diff --git a/block.h b/block.h
index 415bb17..32e1e58 100644
--- a/block.h
+++ b/block.h
@@ -17,6 +17,12 @@  typedef struct BlockDriverInfo {
     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 @@  typedef struct BdrvCheckResult {
     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 @@  static int img_check(int argc, char **argv)
         }
     }
 
+    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 @@  static int img_convert(int argc, char **argv)
         ret = -1;
         goto out;
     }
-        
+
     qemu_progress_init(progress, 2.0);
     qemu_progress_print(0, 100);