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# Date Author Comment
1c27a8b3 07/10/2009 12:58 am G 3

Substitute O_DSYNC with O_SYNC or O_FSYNC when needed.

Signed-off-by: John Arbuckle <>
Signed-off-by: Anthony Liguori <>
1cec71e3 07/10/2009 12:06 am Anthony Liguori

Revert "support colon in filenames"

This reverts commit 707c0dbc97cddfe8d2441b8259c6c526d99f2dd8.

Signed-off-by: Anthony Liguori <>
22afa7b5 06/29/2009 10:18 pm Kevin Wolf

block-raw: Allow pread beyond the end of growable images

When using O_DIRECT, qcow2 snapshots didn't work any more for me. In the
process of creating the snapshot, qcow2 tries to pwrite some new information
(e.g. new L1 table) which will often end up being after the old end of the...
707c0dbc 06/29/2009 09:50 pm Ram Pai

support colon in filenames

Problem: It is impossible to feed filenames with the character colon because
qemu interprets such names as a protocol. For example filename scsi:0, is
interpreted as a protocol by name "scsi".

This patch allows user to espace colon characters. For example the above...
19a3da7f 06/17/2009 06:27 pm Blue Swirl

Fix opening of read only raw images

Signed-off-by: Blue Swirl <>
736d0c25 06/16/2009 11:18 pm Avi Kivity

raw-posix: open flags use BDRV_ namespace, not posix namespace

The flags argument to raw_common_open() contain bits defined by the BDRV_O_*
namespace, not the posix O_* namespace.

Adjust to use the correct constants.

Signed-off-by: Avi Kivity <>...
11a1feb6 06/16/2009 11:18 pm Avi Kivity

raw-posix: Remove O_RDWR when attempting to open a file read-only

When we open a file, we first attempt to open it read-write, then fall back
to read-only. Unfortunately we reuse the flags from the previous attempt,
so both attempts try to open the file with write permissions, and fail....
63ec93db 06/15/2009 03:04 pm Christoph Hellwig

raw-posix: cleanup ioctl methods

Rename raw_ioctl and raw_aio_ioctl to hdev_ioctl and hdev_aio_ioctl as they
are only used for the host device. Also only add them to the method table
for the cases where we need them (generic hdev if linux and linux CDROM)...
508c7cb3 06/15/2009 03:04 pm Christoph Hellwig

block: add bdrv_probe_device method

Add a bdrv_probe_device method to all BlockDriver instances implementing
host devices to move matching of host device types into the actual drivers.
For now we keep exacly the old matching behaviour based on the devices names,...
f3a5d3f8 06/15/2009 02:55 pm Christoph Hellwig

raw-posix: split hdev drivers

Instead of declaring one BlockDriver for all host devices declared one
for each type: a generic one for normal disk devices, a Linux floppy
driver and a CDROM driver for Linux and FreeBSD. This gets rid of a lot
of messy ifdefs and switching based on the type in the various removal...
90babde0 06/15/2009 02:53 pm Christoph Hellwig

raw-posix: add a raw_open_common helper

raw_open and hdev_open contain the same basic logic. Add a new
raw_open_common helper containing the guts of the open routine
and call it from raw_open and hdev_open.

We use the new open_flags field in BDRVRawState to allow passing...
0e1d8f4c 06/15/2009 02:53 pm Christoph Hellwig

raw-posix: always store open flags

Both the Linux floppy and the FreeBSD CDROM host device need to store
the open flags so that they can re-open the device later. Store the
open flags unconditionally to remove the ifdef mess and simply the
calling conventions for the later patches in the series....
db08adf5 06/06/2009 06:38 pm Kevin Wolf

qemu-img: Print available options with -o ?

This patch adds a small help text to each of the options in the block drivers
which can be displayed by using qemu-img create -f fmt -o ?

Signed-off-by: Kevin Wolf <>
c16b5a2c 05/27/2009 05:46 pm Christoph Hellwig

fully split aio_pool from BlockDriver

Now that we have a separate aio pool structure we can remove those
aio pool details from BlockDriver.

Every driver supporting AIO now needs to declare a static AIOPool
with the aiocb size and the cancellation method. This cleans up the...
4099df58 05/27/2009 05:45 pm Christoph Hellwig

raw-posix: fix hdev_create

We do need hdev_create unconditionally on all platforms so that qemu-img
create support for host device works on all platforms.

Also relax the check to allow character devices in addition to block
devices. On many Unix platforms block devices have buffered block...
94c6d6d8 05/27/2009 05:45 pm Christoph Hellwig

fix raw_pread_aligned return value

raw_pread_aligned currently returns the raw return value from
lseek/read, which is always -1 in case of an error. But the
callers higher up the stack expect it to return the negated
errno just like raw_pwrite_aligned.
...
0e7e1989 05/22/2009 06:50 pm Kevin Wolf

Convert all block drivers to new bdrv_create

Now we can make use of the newly introduced option structures. Instead of
having bdrv_create carry more and more parameters (which are format specific in
most cases), just pass a option structure as defined by the driver itself....
019d6b8f 05/15/2009 12:13 am Anthony Liguori

Move block drivers into their own directory

Signed-off-by: Anthony Liguori <>