Re: [Qemu-devel] [PATCH] scsi: turn "is this a SCSI device?" into a conditional hint

[Fam Zheng <famz@redhat.com>]

On Wed, 03/21 11:58, Paolo Bonzini wrote:
> diff --git a/hw/scsi/scsi-generic.c b/hw/scsi/scsi-generic.c
> index 7414fe2d67..b3de5df324 100644
> --- a/hw/scsi/scsi-generic.c
> +++ b/hw/scsi/scsi-generic.c
> @@ -500,9 +500,10 @@ static void scsi_generic_realize(SCSIDevice *s, Error **errp)
>      /* check we are using a driver managing SG_IO (version 3 and after */
>      rc = blk_ioctl(s->conf.blk, SG_GET_VERSION_NUM, &sg_version);
>      if (rc < 0) {
> -        error_setg(errp, "cannot get SG_IO version number: %s.  "
> -                         "Is this a SCSI device?",
> -                         strerror(-rc));
> +        error_setg(errp, "cannot get SG_IO version number: %s", strerror(-rc));
> +        if (rc != -EPERM) {
> +            error_append_hint(errp, "Is this a SCSI device?");
> +        }

Out of the scope of this patch but I find it a bit annoying that hints are not
propagated up in QMP. So that if you hot plug from virsh, the user friendliness
of the old message is lost. Not sure if that is a problem or not.

Fam