[ILUG] SCSI

[Paul Jakma]

On 23 Jul 2001, Mark Kilmartin wrote:

> I should elorbrate a bit.
>
> I am able to add the drive using the RAID cards config tools.
>
> I guess what I'm really asking is there any utility I can use to help me
> get the bus target and lun number??

Most (all???) RAID controller drivers under linux are implemented as
generic block devices - ie not as part of the SCSI system.

ie it might be a SCSI disk - but under linux it will not in anyway be
seen as a SCSI disk. it'll probably be seen as being a disk of the
RAID controller.

I don't know about MegaRAID, the driver is under drivers/scsi so maybe
it does go via the SCSI layer, however that still doesn't mean the
drive is directly accessible.

so:

When you reboot:

- what does the megaraid driver print out
- how does that fit in with what the MegaRAID config utilities say the
  new disk is configured?

> With adding the Disk to the Array.

> I have it working in that I add a drive and tell the card to grow the
> array and reboot when it is finished.
> And the drive now has spare space at the end.

ah.. ok...

> What I would like to do is have some way of getting linux to see the new
> space without rebooting.

afaik, not possible.

> I know this is probably impossible.

yep.

> MArk