Re: [Qemu-devel] [PATCH 1/4] hd-geometry.c: Integrate HDIO_GETGEO in guessing for target-s390x

[Paolo Bonzini]

Il 29/07/2014 14:27, Ekaterina Tumanova ha scritto:
> The new HDIO_GETGEO logic is required for two use cases:
> a) Support for geometries of Direct Attached Storage Disks (DASD)
> on s390x configured as backing of virtio block devices.

Is this still relevant now that QEMU can emulate 512-byte sectors on top
of host devices with 4k sectors?

> b) Support for FCP attached SCSI disks that do not yet have a
> partition table. Without this patch, fdisk -l on the host would
> return different results then fdisk -l in the guest.

Can you provide an example?

Paolo