Hi everyone,

I have a tape drive that was working with SLES 11 SP1 perfectly, but the problem came after a fresh installation of SLES 11 SP2 SAP Version.

Tape Device Model : HP Storage Works Ultrium 1760 SAS
SAS Controller HP Smart Controller P212 - And I installed the following driver from HP

RECOMMENDED * HP ProLiant Smart Array Controller (AMD64/EM64T) Driver for SUSE LINUX Enterprise Server 11 (AMD64/EM64T)

Once I installed the driver I could see the tape device in /dev/st0

hwinfo --tape output
------------------------

sapnode01:~ # hwinfo --tape
89: SCSI 00.0: 10601 Tape
[Created at scsi.1460]
UDI: /org/freedesktop/Hal/devices/pci_103c_323a_scsi_host_scsi_device_lun0_scsi_gene ric
Unique ID: Er1e.jH5QXkQpQf6
Parent ID: GBI1.XEXEELn_ra7
SysFS ID: /class/scsi_tape/st0
SysFS BusID: 0:0:0:0
SysFS Device Link: /devices/pci0000:00/0000:00:03.0/0000:08:00.0/host0/target0:0:0/0:0:0:0
Hardware Class: unknown
Model: "HP Ultrium 4-SCSI"
Vendor: "HP"
Device: "Ultrium 4-SCSI"
Revision: "U57D"
Driver: "cciss", "st"
Driver Modules: "cciss"
Device File: /dev/st0 (/dev/sg0)
Device Files: /dev/st0, /dev/char/9:0, /dev/tape/by-id/scsi-3500110a001465016, /dev/tape/by-path/pci-0000:08:00.0-scsi-0:0:0:0
Device Number: char 9:0 (char 21:0)
Config Status: cfg=new, avail=yes, need=no, active=unknown
Attached to: #61 (RAID bus controller)mt command out puts



sapnode01:~ # mt -f /dev/st0 status
drive type = Generic SCSI-2 tape
drive status = 1174405120
sense key error = 0
residue count = 0
file number = 0
block number = 0
Tape block size 0 bytes. Density code 0x46 (unknown).
Soft error count since last status=0
General status bits on (41010000):
BOT ONLINE IM_REP_EN

sapnode01:~ # mt -f /dev/st0 tell
mt: /dev/st0: Input/output error


The thing is, i could be able to take a tar backup and restore it using the following commands without any error
tar -cvzf /dev/st0 /path/to/backup,
tar -tzf /dev/st0,
tar -xvzf /dev/st0 /path/to/backup/to/restore

But the error occurring when i try to run the oracle full backup using SAP is (find the image)



what can be the issue? are there any specific drivers that i need to install on suse for the SAS controller other than that i have already installed

Your immediate response to this is highly appreciated