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08-31-2012 09:00 AM
08-31-2012 09:00 AM
HP-UX dlt tape drive problem
Hi,
I have a HP DLT8000 tape drive and if i do a sea on the BCH, the drive would show up. But once i got into the OS, if i do a ioscan, it wouldn't see the drive. I tried using insf -e to install the device file but that didn't help. I checked sam and the stape driver is in the system.
Any ideas?
Thanks.
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08-31-2012 09:26 AM
08-31-2012 09:26 AM
Re: HP-UX dlt tape drive problem
Are there any devices in ioscan that show to be unclaimed?
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08-31-2012 09:27 AM
08-31-2012 09:27 AM
Re: HP-UX dlt tape drive problem
Nope, nothing unclaimed.
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08-31-2012 09:28 AM
08-31-2012 09:28 AM
Re: HP-UX dlt tape drive problem
Can you post, or attach, the output of 'ioscan -fn'?
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08-31-2012 09:31 AM
08-31-2012 09:31 AM
Re: HP-UX dlt tape drive problem
# ioscan -fn Class I H/W Path Driver S/W State H/W Type Description ============================================================================= bc 0 root CLAIMED BUS_NEXUS ioa 0 10 sba CLAIMED BUS_NEXUS System Bus Adapter (582) ba 0 10/0 lba CLAIMED BUS_NEXUS Local PCI Bus Adapter (782) lan 0 10/0/12/0 btlan3 CLAIMED INTERFACE HP PCI 10/100Base-TX Core /dev/diag/lan0 /dev/ether0 audio 0 10/0/13/0 audio CLAIMED INTERFACE Built-in Audio /dev/audio /dev/audioBL_0 /dev/audioCtl_0 /dev/audioEL_0 /dev/audioIA_0 /dev/audioIU_0 /dev/audioLL_0 /dev/audioNA_0 /dev/audioNU_0 /dev/audioBA /dev/audioBU /dev/audioEA /dev/audioEU /dev/audioIL /dev/audioLA /dev/audioLU /dev/audioNL /dev/audio_0 /dev/audioBA_0 /dev/audioBU_0 /dev/audioEA_0 /dev/audioEU_0 /dev/audioIL_0 /dev/audioLA_0 /dev/audioLU_0 /dev/audioNL_0 /dev/audioBL /dev/audioCtl /dev/audioEL /dev/audioIA /dev/audioIU /dev/audioLL /dev/audioNA /dev/audioNU ext_bus 0 10/0/14/0 side CLAIMED INTERFACE IDE target 0 10/0/14/0.0 tgt CLAIMED DEVICE disk 0 10/0/14/0.0.0 sdisk CLAIMED DEVICE MITSUMI CD-ROM FX4830T!B /dev/dsk/c0t0d0 /dev/rdsk/c0t0d0 target 1 10/0/14/0.7 tgt CLAIMED DEVICE ctl 0 10/0/14/0.7.0 sctl CLAIMED DEVICE Initiator /dev/rscsi/c0t7d0 ba 1 10/0/14/1 superio CLAIMED BUS_NEXUS PCI Core I/O Adapter tty 0 10/0/14/1/1 asio0 CLAIMED INTERFACE Built-in RS-232C /dev/diag/mux0 /dev/mux0 /dev/tty0p0 tty 1 10/0/14/1/2 asio0 CLAIMED INTERFACE Built-in RS-232C /dev/diag/mux1 /dev/mux1 /dev/tty1p0 ext_bus 1 10/0/14/1/3 SCentIf CLAIMED INTERFACE Built-in Parallel Interface /dev/c1t0d0_lp usb 0 10/0/14/2 hcd CLAIMED INTERFACE Built-in USB Interface usbhub 0 10/0/14/2.1 hub CLAIMED DEVICE USB Root Hub /dev/hub usbhid 0 10/0/14/2.1.2 hid CLAIMED DEVICE USB HID Mouse(0) /dev/hid/firstkbd /dev/hid/hid_003 /dev/hid/hid_008 /dev/hid/hid_013 /dev/hid/kbd_002 /dev/hid/kbd_007 /dev/hid/mouse_004 /dev/hid/firstmouse /dev/hid/hid_004 /dev/hid/hid_009 /dev/hid/hid_014 /dev/hid/kbd_003 /dev/hid/mouse_000 /dev/hid/mouse_005 /dev/hid/hid_000 /dev/hid/hid_005 /dev/hid/hid_010 /dev/hid/hid_015 /dev/hid/kbd_004 /dev/hid/mouse_001 /dev/hid/mouse_006 /dev/hid/hid_001 /dev/hid/hid_006 /dev/hid/hid_011 /dev/hid/kbd_000 /dev/hid/kbd_005 /dev/hid/mouse_002 /dev/hid/mouse_007 /dev/hid/hid_002 /dev/hid/hid_007 /dev/hid/hid_012 /dev/hid/kbd_001 /dev/hid/kbd_006 /dev/hid/mouse_003 usbhid 1 10/0/14/2.1.3 hid CLAIMED DEVICE USB HID Kbd(1) ext_bus 2 10/0/15/0 c720 CLAIMED INTERFACE SCSI C896 Ultra Narrow Single-Ended target 2 10/0/15/0.7 tgt CLAIMED DEVICE ctl 1 10/0/15/0.7.0 sctl CLAIMED DEVICE Initiator /dev/rscsi/c2t7d0 ext_bus 3 10/0/15/1 c720 CLAIMED INTERFACE SCSI C896 Ultra2 Wide LVD target 3 10/0/15/1.5 tgt CLAIMED DEVICE disk 1 10/0/15/1.5.0 sdisk CLAIMED DEVICE HP 36.4GST336706LC /dev/dsk/c3t5d0 /dev/rdsk/c3t5d0 target 4 10/0/15/1.6 tgt CLAIMED DEVICE disk 2 10/0/15/1.6.0 sdisk CLAIMED DEVICE HP 36.4GST336706LC /dev/dsk/c3t6d0 /dev/rdsk/c3t6d0 target 5 10/0/15/1.7 tgt CLAIMED DEVICE ctl 2 10/0/15/1.7.0 sctl CLAIMED DEVICE Initiator /dev/rscsi/c3t7d0 ba 3 10/4 lba CLAIMED BUS_NEXUS Local PCI Bus Adapter (782) ext_bus 4 10/4/1/0 c720 CLAIMED INTERFACE SCSI C875 Ultra Wide Differential target 7 10/4/1/0.7 tgt CLAIMED DEVICE ctl 3 10/4/1/0.7.0 sctl CLAIMED DEVICE Initiator /dev/rscsi/c4t7d0 ba 4 10/6 lba CLAIMED BUS_NEXUS Local PCI Bus Adapter (782) graphics 0 10/6/2/0 graph3 CLAIMED INTERFACE PCI Display (103c108b) processor 0 32 processor CLAIMED PROCESSOR Processor memory 0 49 memory CLAIMED MEMORY Memory
The drive is connected to the PCI scsi interface
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08-31-2012 09:34 AM
08-31-2012 09:34 AM
Re: HP-UX dlt tape drive problem
Have you verified the SCSI ID of the tape drive? Is there a SCSI terminator attached to the drive?
Are there any errors in /var/adm/syslog/syslog.log?
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08-31-2012 09:49 AM
08-31-2012 09:49 AM
Re: HP-UX dlt tape drive problem
Yes i have, and there is a terminator attached to the drive.
When i check the log, i see a lot of the following:
vmunix: SCSI: Resetting SCSI -- lbolt: 661936, bus: 4
vmunix: SCSI: Reset detected -- lbolt: 661936, bus: 4
scb -> cdb: 12 00 00 00 80 00
Do they mean anything?
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08-31-2012 01:05 PM
08-31-2012 01:05 PM
Re: HP-UX dlt tape drive problem
SCSI bus resets are not good.
That indicates that there may be a problem with the tape drive.
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09-01-2012 06:38 AM
09-01-2012 06:38 AM
Re: HP-UX dlt tape drive problem
Problem solved. Instead of swaping a new drive, i swapped the cable and crossed my fingers and it worked!
But here is what i don't understand - if there was a problem to the cable, how come the bch could still detect the presence of the drive but not in ioscan?
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09-01-2012 10:48 AM
09-01-2012 10:48 AM
Re: HP-UX dlt tape drive problem
>> if there was a problem to the cable, how come the bch could still detect the presence of the drive but not in ioscan?
Very different code with the two interfaces. The BCH search is very primitive and does not provide any information except that there was a low level reply to a SCSI probe and a status indicating a serial device. ioscan performs SCSI ID requests and the driver is also probed for additional details, requiring a clean handshake and data transfer for the details.
Bill Hassell, sysadmin