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root / block @ a88790a1

Name Size
blkdebug.c 12.7 kB
bochs.c 6.6 kB
cloop.c 4.9 kB
cow.c 8.6 kB
curl.c 14.8 kB
dmg.c 8.3 kB
nbd.c 4.7 kB
parallels.c 4.4 kB
qcow.c 29.9 kB
qcow2-cluster.c 26.7 kB
qcow2-refcount.c 38.5 kB
qcow2-snapshot.c 12.4 kB
qcow2.c 40.3 kB
qcow2.h 6.9 kB
raw-posix-aio.h 1.3 kB
raw-posix.c 35.6 kB
raw-win32.c 11 kB
raw.c 3.5 kB
vdi.c 29.1 kB
vmdk.c 25.4 kB
vpc.c 17.9 kB
vvfat.c 80.3 kB

Latest revisions

# Date Author Comment
b0ad5a45 06/22/2010 03:38 pm Kevin Wolf

cow: Use bdrv_(p)write_sync for metadata writes

Use bdrv_(p)write_sync to ensure metadata integrity in case of a crash.
While at it, correct the wrong usage of errno.

Signed-off-by: Kevin Wolf <>
5e5557d9 06/22/2010 03:38 pm Kevin Wolf

qcow: Use bdrv_(p)write_sync for metadata writes

Use bdrv_(p)write_sync to ensure metadata integrity in case of a crash.

Signed-off-by: Kevin Wolf <>
8b3b7206 06/22/2010 03:38 pm Kevin Wolf

qcow2: Use bdrv_(p)write_sync for metadata writes

Use bdrv_(p)write_sync to ensure metadata integrity in case of a crash.

Signed-off-by: Kevin Wolf <>
b8852e87 06/22/2010 03:38 pm Kevin Wolf

vmdk: Use bdrv_(p)write_sync for metadata writes

Use bdrv_(p)write_sync to ensure metadata integrity in case of a crash.

Signed-off-by: Kevin Wolf <>
078a458e 06/22/2010 03:38 pm Kevin Wolf

vpc: Use bdrv_(p)write_sync for metadata writes

Use bdrv_(p)write_sync to ensure metadata integrity in case of a crash.

Signed-off-by: Kevin Wolf <>
6882c8fa 06/22/2010 03:38 pm Kevin Wolf

qcow2: Fix qemu-img check segfault on corrupted images

With corrupted images, we can easily get an cluster index that exceeds the
array size of the temporary refcount table.

Signed-off-by: Kevin Wolf <>
f74550fd 06/22/2010 03:38 pm Kevin Wolf

qcow2: Don't try to check tables that couldn't be loaded

Trying to check them leads to a second error message which is more confusing
than helpful:

Can't get refcount for cluster 0: Invalid argument
    ERROR cluster 0 refcount=-22 reference=1

Signed-off-by: Kevin Wolf <>
122bb9e3 06/15/2010 10:41 am Christoph Hellwig

cow: use pread/pwrite

Use pread/pwrite instead of lseek + read/write in preparation of using the
qemu block API.

Signed-off-by: Christoph Hellwig <>
Signed-off-by: Kevin Wolf <>
893a9cb4 06/15/2010 10:41 am Christoph Hellwig

cow: stop using mmap

We don't have an equivalent to mmap in the qemu block API, so read and
write the bitmap directly. At least in the dumb implementation added
in this patch this is a lot less efficient, but it means cow can also
work on windows, and over nbd or curl. And it fixes qemu-iotests testcase...
2063392a 06/15/2010 10:41 am Christoph Hellwig

cow: use qemu block API

Use bdrv_pwrite to access the backing device instead of pread, and
convert the driver to implementing the bdrv_open method which gives
it an already opened BlockDriverState for the underlying device.

Signed-off-by: Christoph Hellwig <>...

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