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c25f53b06e
qemu/block
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Paolo Bonzini c25f53b06e raw: Probe required direct I/O alignment 
Add a bs->request_alignment field that contains the required
offset/length alignment for I/O requests and fill it in the raw block
drivers. Use ioctls if possible, else see what alignment it takes for
O_DIRECT to succeed.

While at it, also expose the memory alignment requirements, which may be
(and in practice are) different from the disk alignment requirements.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
2014-01-24 17:40:02 +01:00
..
backup.c block: introduce BDRV_REQ_MAY_UNMAP request flag 2013-11-28 10:30:51 +01:00
blkdebug.c blkdebug: Allow command-line file configuration 2014-01-22 12:07:18 +01:00
blkverify.c block: Create authorizations mechanism for external snapshot and resize. 2014-01-24 16:07:08 +01:00
bochs.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
cloop.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
commit.c commit: Remove unused check 2013-12-20 16:26:16 +01:00
cow.c block: Allow reference for bdrv_file_open() 2014-01-22 12:07:17 +01:00
curl.c block/curl: Implement the libcurl timer callback interface 2014-01-24 16:07:08 +01:00
dmg.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
gluster.c gluster: Add support for creating zero-filled image 2014-01-22 12:07:16 +01:00
iscsi.c block: Move initialisation of BlockLimits to bdrv_refresh_limits() 2014-01-24 17:40:01 +01:00
linux-aio.c aio: drop io_flush argument 2013-08-19 15:52:19 +02:00
Makefile.objs Split nbd block client code 2013-12-16 10:12:20 +01:00
mirror.c block: resize backing image during active layer commit, if needed 2014-01-24 16:12:49 +01:00
nbd-client.c nbd: avoid uninitialized warnings 2013-12-16 10:12:20 +01:00
nbd-client.h nbd: pass export name as init argument 2013-12-16 10:12:20 +01:00
nbd.c qemu-option: Remove qemu_opts_create_nofail 2014-01-06 15:02:30 -05:00
parallels.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
qapi.c qmp: Add QMP query-named-block-nodes to list the named BlockDriverState nodes. 2014-01-24 16:07:08 +01:00
qcow2-cache.c qcow2: Use negated overflow check mask 2013-10-11 16:50:00 +02:00
qcow2-cluster.c qcow2: use start_of_cluster() and offset_into_cluster() everywhere 2013-12-06 16:53:50 +01:00
qcow2-refcount.c qcow2: use start_of_cluster() and offset_into_cluster() everywhere 2013-12-06 16:53:50 +01:00
qcow2-snapshot.c snapshot: distinguish id and name in load_tmp 2013-12-04 15:19:00 +01:00
qcow2.c block: Move initialisation of BlockLimits to bdrv_refresh_limits() 2014-01-24 17:40:01 +01:00
qcow2.h qcow2: fix wrong value of L1E_OFFSET_MASK, L2E_OFFSET_MASK and REFT_OFFSET_MASK 2014-01-24 14:33:00 +01:00
qcow.c block: Allow reference for bdrv_file_open() 2014-01-22 12:07:17 +01:00
qed-check.c qed: mark image clean after repair succeeds 2012-08-10 10:25:12 +02:00
qed-cluster.c Use glib memory allocation and free functions 2011-08-20 23:01:08 -05:00
qed-gencb.c Use glib memory allocation and free functions 2011-08-20 23:01:08 -05:00
qed-l2-cache.c qed: do not evict in-use L2 table cache entries 2012-03-12 15:14:06 +01:00
qed-table.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
qed.c block: Move initialisation of BlockLimits to bdrv_refresh_limits() 2014-01-24 17:40:01 +01:00
qed.h block: qed - use QEMU_PACKED for on-disk structures 2013-09-25 20:51:15 +02:00
raw_bsd.c block/raw: copy BlockLimits on raw_open 2013-11-28 10:30:51 +01:00
raw-aio.h raw-posix: add support for write_zeroes on XFS and block devices 2013-12-03 15:26:49 +01:00
raw-posix.c raw: Probe required direct I/O alignment 2014-01-24 17:40:02 +01:00
raw-win32.c raw: Probe required direct I/O alignment 2014-01-24 17:40:02 +01:00
rbd.c rbd: switch from pipe to QEMUBH completion notification 2014-01-22 12:07:16 +01:00
sheepdog.c sheepdog: fix 'qemu-img map' 2014-01-24 14:33:00 +01:00
snapshot.c qemu-nbd: support internal snapshot export 2013-12-04 15:19:00 +01:00
ssh.c bdrv: Use "Error" for creating images 2013-09-12 10:12:48 +02:00
stream.c block: Update BlockLimits when they might have changed 2014-01-24 17:40:01 +01:00
vdi.c block drivers: add discard/write_zeroes properties to bdrv_get_info implementation 2013-12-03 15:26:49 +01:00
vhdx-endian.c block: vhdx - move more endian translations to vhdx-endian.c 2013-11-07 13:58:59 +01:00
vhdx-log.c block: vhdx - improve error message, and .bdrv_check implementation 2013-12-20 09:11:58 +01:00
vhdx.c block: Allow reference for bdrv_file_open() 2014-01-22 12:07:17 +01:00
vhdx.h block: vhdx - improve error message, and .bdrv_check implementation 2013-12-20 09:11:58 +01:00
vmdk.c block: Move initialisation of BlockLimits to bdrv_refresh_limits() 2014-01-24 17:40:01 +01:00
vpc.c block drivers: add discard/write_zeroes properties to bdrv_get_info implementation 2013-12-03 15:26:49 +01:00
vvfat.c qemu-option: Remove qemu_opts_create_nofail 2014-01-06 15:02:30 -05:00
win32-aio.c win32-aio: drop win32_aio_flush_cb() 2013-08-22 22:05:04 +02:00