01-12-2012
DLT 7000 tape drive failing with "write error on a record in the index"
HP rp5450 (L2000)
running HP-UX 11.11B
Using DLT 7000 and DLT 4000 tape drives for nightly full backups
Backup jobs created by SAM
DLT 7000 cron entry is as follows:
00 2 * * 1-6 /usr/sam/lbin/br_backup DLT FULL Y /dev/rmt/0m /var/sam/graphLCAa17036 root Y 1 N > /var/sam/SAM_br_msgs 2>&1 #sambackup
On the DLT 7000 have been getting failures for the past month or so, most of which are "write error on a record in the index".
Have tried swapping tape drive positions in the enclosure (SCSI bus) with no luck.
Have tried different tape manufacturers & new/old tapes with no luck.
Have tried multiple DLT 7000 drives with no luck.
Backup jobs using to DLT 4000 are working successfully for same dataset.
Any ideas as to what is causing this failure & how to resolve?
Thanks
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LEARN ABOUT CENTOS
tapeinfo
TAPEINFO(1) General Commands Manual TAPEINFO(1)
NAME
tapeinfo - report SCSI tape device info
SYNOPSIS
tapeinfo -f <scsi-generic-device>
DESCRIPTION
The tapeinfo command reads various information from SCSI tape drives that is not generally available via most vendors' tape drivers. It
issues raw commands directly to the tape drive, using either the operating system's SCSI generic device ( e.g. /dev/sg0 on Linux,
/dev/pass0 on FreeBSD) or the raw SCSI I/O ioctl on a tape device on some operating systems.
One good time to use 'tapeinfo' is immediately after a tape i/o operation has failed. On tape drives that support HP's 'tapealert' API,
'tapeinfo' will report a more exact description of what went wrong.
Do be aware that 'tapeinfo' is not a substitute for your operating system's own 'mt' or similar tape driver control program. It is intended
to supplement, not replace, programs like 'mt' that access your operating system's tape driver in order to report or set information.
OPTIONS
The first argument, given following -f , is the SCSI generic device corresponding to your tape drive. Consult your operating system's doc-
umentation for more information (for example, under Linux these are generally start at /dev/sg0 under FreeBSD these start at /dev/pass0).
Under FreeBSD, 'camcontrol devlist' will tell you what SCSI devices you have, along with which 'pass' device controls them. Under Linux,
"cat /proc/scsi/scsi" will tell you what SCSI devices you have.
BUGS AND LIMITATIONS
This program has only been tested on Linux with a limited number of tape drives (HP DDS4, Seagate AIT).
AVAILABILITY
tapeinfo is currently being maintained by Robert Nelson <robertnelson@users.sourceforge.net> as part of the 'mtx' suite of programs. The
'mtx' home page is http://mtx.sourceforge.net and the actual code is currently available there and via SVN from http://source-
forge.net/projects/mtx.
SEE ALSO
mt(1),mtx(1),scsitape(1),scsieject(1),loaderinfo(1)
TAPEINFO1.0 TAPEINFO(1)