diff options
| author | Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> | 2012-08-09 13:05:56 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2012-08-10 10:25:12 +0200 |
| commit | 058f8f16db0c1c528b665a6283457f019c8b0926 (patch) | |
| tree | cf49eb0701d42ae865a1156354112f29e5800929 | |
| parent | acbe59829e448aa63bdccc6ee484b7e1ac605e25 (diff) | |
block: add BLOCK_O_CHECK for qemu-img check
Image formats with a dirty bit, like qed and qcow2, repair dirty image
files upon open with BDRV_O_RDWR. Performing automatic repair when
qemu-img check runs is not ideal because the bdrv_open() call repairs
the image before the actual bdrv_check() call from qemu-img.c.
Fix this "double repair" since it leads to confusing output from
qemu-img check. Tell the block driver that this image is being opened
just for bdrv_check(). This skips automatic repair and qemu-img.c can
invoke it manually with bdrv_check().
Update the golden output for qemu-iotests 039 to reflect the new
qemu-img check output.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| -rw-r--r-- | block.h | 1 | ||||
| -rw-r--r-- | block/qcow2.c | 4 | ||||
| -rw-r--r-- | block/qed.c | 2 | ||||
| -rw-r--r-- | qemu-img.c | 2 | ||||
| -rw-r--r-- | tests/qemu-iotests/039.out | 6 |
5 files changed, 11 insertions, 4 deletions
@@ -79,6 +79,7 @@ typedef struct BlockDevOps { #define BDRV_O_NO_FLUSH 0x0200 /* disable flushing on this disk */ #define BDRV_O_COPY_ON_READ 0x0400 /* copy read backing sectors into image */ #define BDRV_O_INCOMING 0x0800 /* consistency hint for incoming migration */ +#define BDRV_O_CHECK 0x1000 /* open solely for consistency check */ #define BDRV_O_CACHE_MASK (BDRV_O_NOCACHE | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH) diff --git a/block/qcow2.c b/block/qcow2.c index 5896fd6d9c..8f183f1465 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -484,8 +484,8 @@ static int qcow2_open(BlockDriverState *bs, int flags) qemu_co_mutex_init(&s->lock); /* Repair image if dirty */ - if ((s->incompatible_features & QCOW2_INCOMPAT_DIRTY) && - !bs->read_only) { + if (!(flags & BDRV_O_CHECK) && !bs->read_only && + (s->incompatible_features & QCOW2_INCOMPAT_DIRTY)) { BdrvCheckResult result = {0}; ret = qcow2_check(bs, &result, BDRV_FIX_ERRORS); diff --git a/block/qed.c b/block/qed.c index 226545d8e7..a02dbfd72d 100644 --- a/block/qed.c +++ b/block/qed.c @@ -477,7 +477,7 @@ static int bdrv_qed_open(BlockDriverState *bs, int flags) } /* If image was not closed cleanly, check consistency */ - if (s->header.features & QED_F_NEED_CHECK) { + if (!(flags & BDRV_O_CHECK) && (s->header.features & QED_F_NEED_CHECK)) { /* Read-only images cannot be fixed. There is no risk of corruption * since write operations are not possible. Therefore, allow * potentially inconsistent images to be opened read-only. This can diff --git a/qemu-img.c b/qemu-img.c index 94a31ad9f0..b41e670a61 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -379,7 +379,7 @@ static int img_check(int argc, char **argv) BlockDriverState *bs; BdrvCheckResult result; int fix = 0; - int flags = BDRV_O_FLAGS; + int flags = BDRV_O_FLAGS | BDRV_O_CHECK; fmt = NULL; for(;;) { diff --git a/tests/qemu-iotests/039.out b/tests/qemu-iotests/039.out index 155a05e109..cb510d6716 100644 --- a/tests/qemu-iotests/039.out +++ b/tests/qemu-iotests/039.out @@ -26,6 +26,12 @@ incompatible_features 0x1 == Repairing the image file must succeed == ERROR OFLAG_COPIED: offset=8000000000050000 refcount=0 Repairing cluster 5 refcount=0 reference=1 +The following inconsistencies were found and repaired: + + 0 leaked clusters + 1 corruptions + +Double checking the fixed image now... No errors were found on the image. incompatible_features 0x0 |