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>
parent
e962fa66
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