Hello everyone,
I have a 6 drive LTO4 Dell ML6000 changer, running on a Dell Poweredge 2900
with Suse Enterprise 10 SP2, and over the last weeks I've managed to get Bacula
3.0.2 running very well with it.
Except for one problem where every night now a few jobs stall requiring
intervention requesting tapes. I am using brand new tapes that are being
autolabelled and moved from a scratch pool. The autolabelling etc is all
working well and I'm sure that's not causing problems.
I've been trawling through the email archives, and found a few similar
situations where people were using older versions of bacula that had a bug.
But I thought that it was fixed in version 3.0.2...?
Here's an excerpt from the storage status whilst the jobs are requiring
intervention:
Device "Drive-0" (/dev/tape/by-id/scsi-3500308c09f221090-nst) is mounted with:
Volume: LX0005
Pool: Week3
Media type: LTO4
Slot 76 is loaded in drive 0.
Total Bytes=3,571,088,384 Blocks=3,407 Bytes/block=1,048,162
Positioned at File=5 Block=0
Device "Drive-1" (/dev/tape/by-id/scsi-3500308c09f221094-nst) is mounted with:
Volume: LX0002
Pool: Week3
Media type: LTO4
Slot 73 is loaded in drive 1.
Total Bytes=14,290,500,608 Blocks=13,633 Bytes/block=1,048,228
Positioned at File=18 Block=0
Device "Drive-2" (/dev/tape/by-id/scsi-3500308c09f221098-nst) is mounted with:
Volume: LX0003
Pool: Week3
Media type: LTO4
Slot 74 is loaded in drive 2.
Total Bytes=8,136,003,584 Blocks=7,762 Bytes/block=1,048,183
Positioned at File=10 Block=0
Device "Drive-3" (/dev/tape/by-id/scsi-3500308c09f22109c-nst) is mounted with:
Volume: LX0004
Pool: Week3
Media type: LTO4
Slot 75 is loaded in drive 3.
Total Bytes=14,862,441,472 Blocks=14,175 Bytes/block=1,048,496
Positioned at File=15 Block=0
Device "Drive-4" (/dev/tape/by-id/scsi-3500308c09f221000-nst) is not open.
Device is BLOCKED waiting for mount of volume "LX0003",
Pool: Week3
Media type: LTO4
Drive 4 status unknown.
Device "Drive-5" (/dev/tape/by-id/scsi-3500308c09f221004-nst) is not open.
Device is BLOCKED waiting for mount of volume "LX0006",
Pool: Week3
Media type: LTO4
Slot 77 is loaded in drive 5.
And an excerpt from my bacula-sd.conf:
Autochanger {
Name = Dell-ML6000
Device = Drive-0, Drive-1, Drive-2, Drive-3, Drive-4, Drive-5
Changer Command = "/usr/lib64/bacula/mtx-changer %c %o %S %a %d"
Changer Device = /dev/tape/by-id/scsi-1ADIC_A0C0138B29_LLA
# %c = changer device
# %o = command (unload|load|loaded|list|slots)
# %S = slot index (1-based)
# %a = archive device (i.e., /dev/sd* name for tape drive)
# %d = drive index (0-based)
}
Device {
Name = Drive-0
Media Type = LTO4
Archive Device = /dev/tape/by-id/scsi-3500308c09f221090-nst
Device Type = Tape
Autochanger = Yes
# Alert Command = "sh -c '/usr/sbin/tapeinfo -f /dev/sg1 | /bin/sed -n
/TapeAlert/p'"
Drive Index = 0
# Autoselect = yes # Since our backup host lacks
# the I/O bandwidth for it to
# worthwhile to write to two
# drives simultaneously, it
# might be worthwhile
# manipulating this to either
# reserve a drive for
# restores, or to spread the
# wear across the two drives.
# Maximum Changer Wait = 300 seconds
# Maximum Rewind Wait = 300 seconds
# Maximum Open Wait = 300 seconds
# Always Open = Yes
# Volume Poll Interval = 0 # 0 means "don't poll".
RemovableMedia = yes
Random Access = no
# Maximum block size = 64512 # Some sources suggest 128K or
# Maximum block size = 2000000 # 2MB for LTO4
Maximum block size = 1048576
# Hardware End of Medium = Yes
# Fast Forward Space File = Yes
# Use MTIOCGET = Yes
# BSF at EOM = No
# Two EOM = No
# Backward Space Record = Yes
# Backward Space File = Yes
# Forward Space Record = Yes
# Forward Space File = Yes
# Offline On Unmount = No
# Maximum File Size = 1gb
# Block Positioning = yes
# Maximum Network Buffer Size = 32768 # The manual suggests it may be
# worthwhile doubling this.
Maximum Network Buffer Size = 65536
Maximum Spool Size = 500gb
Maximum Job Spool Size = 400gb
Spool Directory = /data/BACULA/spool0
Label media = yes
# Automatic mount = Yes
Automatic Mount = yes
AlwaysOpen = yes
}
Device {
Name = Drive-1
Archive Device = /dev/tape/by-id/scsi-3500308c09f221094-nst
Device Type = Tape
Media Type = LTO4
Autochanger = Yes
# Changer Device = <inherited from Changer>
# Alert Command = "sh -c '/usr/sbin/tapeinfo -f /dev/sg2 | /bin/sed -n
/TapeAlert/p"
Drive Index = 1
RemovableMedia = yes
Random Access = no
# Maximum block size = 2000000 # 2MB for LTO4
Maximum block size = 1048576
Automatic Mount = yes
Maximum Network Buffer Size = 65536
Maximum Spool Size = 500gb
Maximum Job Spool Size = 400gb
Spool Directory = /data/BACULA/spool1
AlwaysOpen = yes
Label media = yes
}
Device {
Name = Drive-2
Archive Device = /dev/tape/by-id/scsi-3500308c09f221098-nst
Device Type = Tape
Media Type = LTO4
Autochanger = Yes
# Changer Device = <inherited from Changer>
# Alert Command = "sh -c '/usr/sbin/tapeinfo -f /dev/sg2 | /bin/sed -n
/TapeAlert/p"
Drive Index = 2
RemovableMedia = yes
Random Access = no
# Maximum block size = 2000000 # 2MB for LTO4
Maximum block size = 1048576
Automatic Mount = yes
Maximum Network Buffer Size = 65536
Maximum Spool Size = 500gb
Maximum Job Spool Size = 400gb
Spool Directory = /data/BACULA/spool2
AlwaysOpen = yes
Label media = yes
}
Device {
Name = Drive-3
Archive Device = /dev/tape/by-id/scsi-3500308c09f22109c-nst
Device Type = Tape
Media Type = LTO4
Autochanger = Yes
# Changer Device = <inherited from Changer>
# Alert Command = "sh -c '/usr/sbin/tapeinfo -f /dev/sg2 | /bin/sed -n
/TapeAlert/p"
Drive Index = 3
RemovableMedia = yes
Random Access = no
# Maximum block size = 2000000 # 2MB for LTO4
Maximum block size = 1048576
Automatic Mount = yes
Maximum Network Buffer Size = 65536
Maximum Spool Size = 500gb
Maximum Job Spool Size = 400gb
Spool Directory = /data/BACULA/spool3
AlwaysOpen = yes
Label media = yes
}
Device {
Name = Drive-4
Archive Device = /dev/tape/by-id/scsi-3500308c09f221000-nst
Device Type = Tape
Media Type = LTO4
Autochanger = Yes
# Changer Device = <inherited from Changer>
# Alert Command = "sh -c '/usr/sbin/tapeinfo -f /dev/sg2 | /bin/sed -n
/TapeAlert/p"
Drive Index = 4
RemovableMedia = yes
Random Access = no
# Maximum block size = 2000000 # 2MB for LTO4
Maximum block size = 1048576
Automatic Mount = yes
Maximum Network Buffer Size = 65536
Maximum Spool Size = 500gb
Maximum Job Spool Size = 400gb
Spool Directory = /data/BACULA/spool4
AlwaysOpen = yes
Label media = yes
}
Device {
Name = Drive-5
Archive Device = /dev/tape/by-id/scsi-3500308c09f221004-nst
Device Type = Tape
Media Type = LTO4
Autochanger = Yes
# Changer Device = <inherited from Changer>
# Alert Command = "sh -c '/usr/sbin/tapeinfo -f /dev/sg2 | /bin/sed -n
/TapeAlert/p"
Drive Index = 5
RemovableMedia = yes
Random Access = no
# Maximum block size = 2000000 # 2MB for LTO4
Maximum block size = 1048576
Automatic Mount = yes
Maximum Network Buffer Size = 65536
Maximum Spool Size = 500gb
Maximum Job Spool Size = 400gb
Spool Directory = /data/BACULA/spool5
AlwaysOpen = yes
Label media = yes
}
I'd like to thank everyone that's contributed to the documentation so far,
especially for the ML6000 config someone put in, and the postgresql backup
notes. I'll be adding what I can once it's running properly ;-)
Thanks, Evan.
(barkboy)
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