[dm-devel] hwtable.c for HP LOGICAL VOLUME (cciss_tur isn't working on iSCSI connection).

[Bryn M. Reeves]

On Thu, 2009-03-26 at 14:46 -0400, Konrad Rzeszutek wrote:
> One of our customers purchased a iSCSI target software that converts the
> local disks into shareable SAN disks. (http://www.rocketdivision.com/wind.html).
> 
> Unfortunatly the software exports the vendor/product of the disks the same as
> on the target. Meaning that the HP LOGICAL DISKS are shown over an iSCSI
> initiator session. And the cciss_tur checker is kicked off and tries
> this ioctl call:
> 
>     rc = ioctl(c->fd, CCISS_GETLUNINFO, &lvi);
>     if ( rc != 0) {
>         perror("Error: ");
>         fprintf(stderr, "cciss TUR  failed in CCISS_GETLUNINFO: %s\n",
> 
> 
> which fails, since the ioctl is done on a SCSI device instead
> on the cciss driver.
> 
> So should the cciss_tur be modified try to do a normal SCSI tur
> if it fails to perform the ioctl call? Maybe make a path where
> it would first do a CCISS_VERSION (not sure if that exists) and
> if that fail do exactly what the 'tur' checker does?
> 
> Or maybe (with more of these types of software that turn your box in
> iSCSI target), provide a means of having a secondary path checker in case
> the first one fails?
> 
> Thoughts?

Why not just fix the target to provide more useful vendor/product info
as the other software targets do?

Regards,
Bryn.