On 12/08/20 00:51, Dmitry Fomichev wrote:
> When a host-managed zoned device is passed through to the
> guest system using scsi-generic driver, the maximum i/o size for the
> drive at the guest may end up being larger than at the host, causing
> i/o errors while accessing the backing zoned drive at the host system.
>
> Two problems prevent correct setting of the maximum i/o transfer size
> at the guest in this configuration. One issue is specific to
> host-managed zone devices - scsi-generic driver doesn't recognize the
> SCSI type of HM-zoned devices. The other problem is that file-posix
> code for finding max_segments system value doesn't correctly handle
> SG nodes.
>
> The following two patches fix these problems.
>
> Based-on: <20200424084338.26803-16-armbru@redhat.com>
>
> Dmitry Fomichev (2):
> file-posix: Correctly read max_segments of SG nodes
> scsi-generic: Fix HM-zoned device scan
>
> block/file-posix.c | 55 +++++++++++++++++++++++-----------------
> hw/scsi/scsi-generic.c | 10 +++++---
> include/scsi/constants.h | 1 +
> 3 files changed, 39 insertions(+), 27 deletions(-)
>
The patches are more or less unrelated; I have queued the second, while
the first is outside my maintenance area.
Paolo