From: Joe Brancaleone (joe@nitech.com)
Date: Fri Aug 23 2002 - 13:41:36 EDT
Well this past weekend I installed the Dec. 2001 XSWGR1020 patches with
no change, still getting I/O errors. However, I must apologize for
leaving out some very important details on the hardware end:
This is a K580 server. The LVD Ultrium drive is connected to an HVD
HP-PB card, through a LVD-HVD converter, because there are no more HSC
slots available and there are no LVD nor Wide Single-Ended HBA's for
HP-HB (say that 5 times fast). The converter setup with this device has
been tested on other systems.
From responses to one of my original questions, the tape2 driver is
assigned to a tape device due to the bus type it resides on. HP doesn't
officially support Ultrium on HP-PB (nor, I think on K series in general
except in their library/autoloaders which probably has its own internal
converter).
My strong suspicion now is that the Ultrium device will only work on the
K server through an HSC bus (perhaps a wide single-ended card or
whatever is available?), which would assign the stape driver to the
Ultrium. I will know for sure when I am able to daisy chain the Ultrium
onto an existing bus hanging off an HSC interface.
Any further input is appreciated.
regards,
joe
Joe Brancaleone wrote:
> We are attempting to use an Ultrium 215m LTO tape drive, in an
> external 5300 array, on a K-Class running HP-UX 10.20. So far things
> haven't been smooth. The scant documentation I've found says that the
> Ultrium is supported on 10.20. I'm skeptical, because the OS became
> obselete last year very soon after LTO drives were available. If they
> are indeed supported, I am trying to figure out what kind of patches
> or black magic will be needed to get this working.
>
> During the machine's last window of downtime, the drive was added and
> upon reboot the OS assigned to it the tape2 driver, as the ioscan shows:
>
> # ioscan -fnC tape
>
> Class I H/W Path Driver S/W State H/W Type Description
> ======================================================================
> tape 0 10/0.6.0 stape SCAN DEVICE QUANTUM DLT7000
> /dev/rmt/0m /dev/rmt/0mn
> /dev/rmt/c3t6d0BEST /dev/rmt/c3t6d0BESTn
> /dev/rmt/0mb /dev/rmt/0mnb /dev/rmt/c3t6d0BESTb
> /dev/rmt/c3t6d0BESTnb
> tape 3 10/4/4.1.0 tape2 SCAN DEVICE HP
> Ultrium 1-SCSI
> /dev/diag/rmt/c8t1d0 /dev/rmt/3mn
> /dev/rmt/c8t1d0BESTb /dev/rmt/3m
> /dev/rmt/3mnb /dev/rmt/c8t1d0BESTn
> /dev/rmt/3mb /dev/rmt/c8t1d0BEST /dev/rmt/c8t1d0BESTnb ...
>
> There are also two other tape devices connected to the system but the
> Ultrium is the only device on its bus.
>
> I notice that the tape2 driver description says "DDS module", which
> doesn't sound right for the LTO drive. tape1 is another driver
> currently "out" of the kernel and its description is "HP-IB Tape Drive
> Driver", don't know if that's relevant or not.
>
> The only backup method the server's admin wants to use is going
> through SAM/fbackup. SAM complains about the Ultrium device, saying
> something like "It looks like an Ultrium drive but probably will fail
> with backups", and sure enough it does.
> I'm thinking it's a matter of getting the latest scsi tape patches,
> but i'm not sure what those would be. here are the current packages
> installed:
>
> OnlineDiag B.10.20.24.10 HPUX 10.0 Support Tools Bundle,
> Dec 2001 XSW800GR1020 B.10.20.51.2 General Release
> Patches for HP-UX 10.20 Servers (Dec. 2000) XSW800HWCR1020
> B.10.20.37 Extension Software Patch Bundle
> Y2K-1020S800 B.10.20.B0315 HP-UX Core OS Year 2000 Patch
> Bundle
> I think, but am not sure, these are the most recent support bundles
> released for 10.20. Are these up to date?
>
> So... questions:
> Does anyone know what it takes to get an Ultrium drive working on a
> 10.20 machine?
> Is the Ultrium really supported on 10.20 or is this wishful thinking?
> Is it a matter of installing certain patches not found in the above
> bundles, or are there additional non-bundled patches I need to install?
> Do I need to make modifications in /stand/system? Is it a driver issue
> where I need to somehow manually assign stape to the Ultrium drive?
>
> Is everything fine, and this is just an unresovable SAM/fbackup issue
> that I won't encounter with other backup methods?
>
> Thanks in advance! Unfortunately because of the importance of system
> uptime the machine cannot get a reboot until the weekend, so I'm
> trying to find out ahead of time what I need to do before the window
> of opportunity comes and goes again.
> regards,
> joe
>
--
Joe Brancaleone
Support Technician
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Nitech
35 Musick
Irvine Ca. 92618
Phn: 1-888-264-8324
Fax: 949-586-5234
Email: joe@nitech.com
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