Re: [Qemu-devel] [PATCH 2/5] pr-helper: fix assertion failure on failed multipath PERSISTENT RESERVE IN

[Michal Privoznik <mprivozn@redhat.com>]

On 06/26/2018 05:40 PM, Paolo Bonzini wrote:
> The response size is expected to be zero if the SCSI status is not
> "GOOD", but nothing was resetting it.
> 
> This can be reproduced simply by "sg_persist -s /dev/sdb" where /dev/sdb
> in the guest is a scsi-block device corresponding to a multipath device
> on the host.
> 
> Before:
> 
>   PR in (Read full status): Aborted command
> 
> and on the host:
> 
>   prh_write_response: Assertion `resp->sz == 0' failed.
> 
> After:
> 
>   PR in (Read full status): bad field in cdb or parameter list
>   (perhaps unsupported service action)
> 
> Reported-by: Jiri Belka <jbelka@redhat.com>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
>  scsi/qemu-pr-helper.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>

Michal