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Hi at all,
yesterday I've added a second LTO-4 ULTRIUM 1640 tape reader into my HP
MSL6030 SCSI tape library. I'm using Bacula 5.0.2 on Centos 5 x64.
I've updated my config in this way:
## bacula-sd.conf
Autochanger {
Name = "Autochanger"
Device = Drive-1, Drive-2
Changer Device = /dev/sg5
Changer Command = "/etc/bacula/mtx-changer %c %o %S %a %d"
}
Device {
Name = Drive-1
Drive Index = 0
Media Type = LTO-4
Archive Device = /dev/nst1
AutomaticMount = yes; # when device opened, read it
AlwaysOpen = yes;
RemovableMedia = yes;
RandomAccess = no;
# Maximum File Size = 5GB
Changer Command = "/etc/bacula/mtx-changer %c %o %S %a %d"
Changer Device = /dev/sg5
AutoChanger = yes
Spool Directory = /srv/baculaspool
Maximum Spool Size = 50G
# Enable the Alert command only if you have the mtx package loaded
Alert Command = "sh -c 'tapeinfo -f %c |grep TapeAlert|cat'"
# If you have smartctl, enable this, it has more info than tapeinfo
Alert Command = "sh -c 'smartctl -H -l error %c'"
}
Device {
Name = Drive-2
Drive Index = 1
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
Changer Command = "/etc/bacula/mtx-changer %c %o %S %a %d"
Changer Device = /dev/sg5
AutoChanger = yes
Spool Directory = /srv/baculaspool
Maximum Spool Size = 50G
# Enable the Alert command only if you have the mtx package loaded
Alert Command = "sh -c 'tapeinfo -f %c |grep TapeAlert|cat'"
# If you have smartctl, enable this, it has more info than tapeinfo
Alert Command = "sh -c 'smartctl -H -l error %c'"
}
##bacula-dir.conf (storage section):
# LTO-4 Storage
Storage {
Name = TAPE
Address = backup2.lan
SDPort = 9103
Password = "sdpassword"
Device = Drive-1
Media Type = LTO-4
Maximum Concurrent Jobs = 20
}
# LTO-4 Storage 2nd drive
Storage {
Name = TAPE2
Address = backup2.lan
SDPort = 9103
Password = "sdpassword"
Device = Drive-2
Media Type = LTO-4
Maximum Concurrent Jobs = 20
}
# MSL6030 Autochanger
Storage {
Name = MSL6000
Address = backup2.lan
SDPort = 9103
Password = "sdpassword"
Device = Autochanger
Media Type = LTO-4
Autochanger = Yes
Maximum Concurrent Jobs = 20
}
The old drive is Drive-1, meanwhile the new one is Drive-2. I've
connected both the library (/dev/sg5) than the two reader to the same
SCSI chain using 3 SCSI cables and an ending SCSI terminator.
The library is happy, but when I've tried to run a backup job, Bacula
choices the first tape (the old one): after 2 or 3 megabytes the job
fails with this messages:
01-Dec 12:41 backup2.lan-sd JobId 2032: Wrote label to prelabeled Volume
"NN6036L4" on device "Drive-1" (/dev/nst1)
01-Dec 12:41 backup2.lan-sd JobId 2032: Error: block.c:577 Write error
at 0:12 on device "Drive-1" (/dev/nst1). ERR=Input/output error.
01-Dec 12:42 backup2.lan-sd JobId 2032: Error: block.c:318 Volume data
error at 0:4294967295!
Block checksum mismatch in block=11 len=64512: calc=669ee9d3 blk=a7b18121
01-Dec 12:42 backup2.lan-sd JobId 2032: Error: Re-read last block at EOT
failed. ERR=block.c:318 Volume data error at 0:4294967295!
Block checksum mismatch in block=11 len=64512: calc=669ee9d3 blk=a7b18121
and tries to load a new tape from the same pool (incremental pool).
After used any of available tapes, Bacula request a new one but fails again.
Now I've cancelled all jobs and, after erased a tape, I've tried to run
a manual backup jobs forcing use the new tape reader: this jobs ends
successful!
Till yesterday morning I've always use the old reader without troubles,
but now I got this error into dmesg:
st1: Current: sense key: Aborted Command
Add. Sense: Information unit iuCRC error detected
INFO: task mt:19730 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
mt D ffff810001587120 0 19730 7392
(NOTLB)
ffff810027741cd8 0000000000000082 0000000000000001 ffff810020ed2d68
ffff81003efa5928 0000000000000007 ffff81003c138080 ffff81003ff3f080
00000a275d268df9 0000000000003627 ffff81003c138268 000000028807aa5a
Call Trace:
[<ffffffff80063167>] wait_for_completion+0x79/0xa2
[<ffffffff8008cfa1>] default_wake_function+0x0/0xe
[<ffffffff88293e85>] :st:st_do_scsi+0x1f4/0x221
[<ffffffff88294994>] :st:st_int_ioctl+0x5f2/0x92b
[<ffffffff80008d56>] __handle_mm_fault+0x5f3/0x1039
[<ffffffff88296aba>] :st:st_ioctl+0xaa5/0xe1f
[<ffffffff80066b88>] do_page_fault+0x4fe/0x874
[<ffffffff80042181>] do_ioctl+0x55/0x6b
[<ffffffff80030204>] vfs_ioctl+0x457/0x4b9
[<ffffffff800b7605>] audit_syscall_entry+0x180/0x1b3
[<ffffffff8004c633>] sys_ioctl+0x59/0x78
[<ffffffff8005d28d>] tracesys+0xd5/0xe0
Any suggestions?
Thanks,
Simone
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