tree 96bdeadd9af5b16476186df0ea8056175bc16cbb
parent e962fa660d391fc9b90988e6538c94c858c099f9
author Christian Borntraeger <borntraeger@de.ibm.com> 1212052106 +0200
committer Rusty Russell <rusty@rustcorp.com.au> 1216951565 +1000

virtio_blk: check for hardsector size from host

Currently virtio_blk assumes a 512 byte hard sector size. This can cause
trouble / performance issues if the backing has a different block size
(like a file on an ext3 file system formatted with 4k block size or a dasd).

Lets add a feature flag that tells the guest to use a different hard sector
size than 512 byte.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>