Unable to detect HP DLT8000 SCSI Tape drive
Issue
- System does not appear to recognize HP DLT8000 Fast Wide-Diff SCSI Tape drive
# cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 03 Id: 00 Lun: 00
Vendor: HP Model: P410 Rev: 5.76
Type: RAID ANSI SCSI revision: 05
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: HP Model: LOGICAL VOLUME Rev: 5.76
Type: Direct-Access ANSI SCSI revision: 05
Host: scsi4 Channel: 00 Id: 00 Lun: 00
Vendor: hp Model: DVD A DU8A4SH Rev: QHE7
Type: CD-ROM ANSI SCSI revision: 05
- When attempting to scan the scsi bus connected to the device, aborts and resets are observed in the logs
# echo "- - -" > /sys/class/scsi_host/host5/scan
# tail /var/log/messages
kernel: mptscsih: ioc0: attempting task abort! (sc=ffff8803fecd39c0)
kernel: scsi 5:0:0:0: CDB: Inquiry: 12 00 00 00 24 00
kernel: mptscsih: ioc0: WARNING - Issuing Reset from mptscsih_IssueTaskMgmt!! doorbell=0x24000000
kernel: mptbase: ioc0: ERROR - Doorbell ACK timeout (count=4999), IntStatus=80000000!
kernel: mptbase: ioc0: Initiating recovery
kernel: mptbase: ioc0: ERROR - Doorbell ACK timeout (count=4999), IntStatus=80000000!
kernel: mptscsih: ioc0: task abort: SUCCESS (rv=2002) (sc=ffff8803fecd39c0)
kernel: scsi target5:0:0: asynchronous
kernel: mptscsih: ioc0: attempting target reset! (sc=ffff8803fecd39c0)
kernel: scsi 5:0:0:0: CDB: Inquiry: 12 00 00 00 24 00
kernel: mptscsih: ioc0: target reset: SUCCESS (sc=ffff8803fecd39c0)
kernel: mptscsih: ioc0: attempting bus reset! (sc=ffff8803fecd39c0)
kernel: scsi 5:0:0:0: CDB: Inquiry: 12 00 00 00 24 00
kernel: mptscsih: ioc0: bus reset: SUCCESS (sc=ffff8803fecd39c0)
kernel: mptscsih: ioc0: attempting host reset! (sc=ffff8803fecd39c0)
kernel: mptscsih: ioc0: host reset: SUCCESS (sc=ffff8803fecd39c0)
kernel: scsi target5:0:0: asynchronous
kernel: scsi 5:0:0:0: Device offlined - not ready after error recovery
Environment
- Red Hat Enterprise Linux
- HP SC11Xe PCI-E SCSI HBA card
- HP DLT8000 Fast Wide-Diff SCSI tape drive.
- HP B35Z Ultrium 4-SCSI.
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