hi

i have a quantum LTO-4 drive connected via
lsi sas hba (LSISAS1068E).

Device {
  Name = LTO-4-Drive
  Description = "QUANTUM LTO-4 Tape Drive"
  Media Type = LTO-4
  Archive Device = /dev/nst0
  AutomaticMount = yes;               # when device opened, read it
  AlwaysOpen = yes;
  RemovableMedia = yes;
  RandomAccess = no;
  Maximum File Size = 5GB
  Alert Command = "sh -c 'smartctl -H -l error /dev/sg2'"  
}

tape drive basically works, i am running copy
jobs from time to time using a script


mt -f /dev/nst0 load

${BCONSOLE} <<EOT
run job=CopyDiskToTape yes
wait
quit
EOT

mt -f /dev/nst0 eject


problem:
========

after tape is filled with 100-200GB (running above script
10-20 times successfully)
copy jobs fail to write immediately after load and seeking to eof.
tape is marked as full.

btape test reports no problems
btape rawfill writes about 800GB until end of tape is reached

btape /dev/nst0
*rewind
btape: btape.c:577 Rewound "LTO-4-Drive" (/dev/nst0)
*cap
Configured device capabilities:
EOF BSR BSF FSR FSF FASTFSF !BSFATEOM EOM REM !RACCESS AUTOMOUNT !
LABEL !ANONVOLS ALWAYSOPEN MTIOCGET 
Device status:
OPENED TAPE !LABEL !MALLOC APPEND !READ !EOT !WEOT !EOF !NEXTVOL !SHORT 
Device parameters:
Device name: /dev/nst0
File=0 block=0
Min block=0 Max block=0
Status:
 Bacula status: file=0 block=0
 Device status: BOT ONLINE IM_REP_EN file=0 block=0
btape: btape.c:2132 Device status: 645. ERR=block.c:1025 Read zero bytes
at 4:0 on device "LTO-4-Drive" (/dev/nst0).


maybe this ERR is a hint.

someone using this tape drive successful on centos 5 ?
any special device options needed ?

thanks
ulrich


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