Hello,
I have recently installed bareos on a centos 7.1 system using a Quantum scalar
i40 tape library with a IBM ultrium LTO-6 tape drive. So far things are going
well although I am encountering an error that shows up when I change tapes in
the tape drive. The error shows up in the bareos log as:
2016-05-10 18:07:41 burr-sd JobId 250: Error:
and when I run dmesg I see this:
st 10:2:0:0: st0: Failed to read 201 byte block with 80 byte transfer.
>From reading the bareos manual I suspect there is an issue getting the correct
>block size for reading the bareos label. I notice after labeling blank tapes
>using the bconsole label barcode command the volumes in one of my pools have
>volume bytes listed as 201 and another as 199 When these volumes are loaded I
>will see an error like that above but the with byte block size matching that
>of the pool (so when I have a volume originally containing 199 bytes the
>message will be:
st 10:2:0:0: st0: Failed to read 199 byte block with 80 byte transfer.
After this error the backup proceeds normally and I will get a job completed
with warnings notification. I can restore files without issue. The error is
mostly annoying because all of my jobs that require tapes to be changed show up
as completing with a warning. I did change the maximum block size of my device
in the storage director configuration file as follows:
Device {
Name = "ULTRIUM-HH6"
DeviceType = tape
# default:0, only required if the autoloader have multiple drives.
DriveIndex = 0
# if only one drive is available, this is normally /dev/nst0.
# However, it is advised to access it via id (/dev/tape/by-id/...).
#ArchiveDevice = /dev/nst0
ArchiveDevice = /dev/tape/by-id/scsi-3500308c38ea67000-nst
# arbitrary string that descripes the the storage media.
# Bareos uses this to determine, which device can be handle what media.
MediaType = LTO6
#LabelMedia set to no seems to be what bareos expects for tape drives
LabelMedia = no
# enable "Check Labels" if tapes with ANSI/IBM labels
# should be preserved
Check Labels = yes
AutomaticMount = yes # default: no
AlwaysOpen = yes
RemovableMedia = yes
RandomAccess = no
AutoChanger = yes # default: no
MaximumFileSize = 20GB # default: 1000000000 (1GB)
MaximumBlockSize = 1048576
}
Autochanger {
Name = "QUANTUM_Scalar_i40"
# adapt this, to match your storage loader
#Changer Device = /dev/tape/by-id/scsi-1TANDBERGStorageLoader_AA45JC001732
Changer Device = /dev/tape/by-id/scsi-1QUANTUM_D0H0113301_LLA
# an Autochanger can contain multiple drive devices
Device = ULTRIUM-HH6
#Device = tapedrive-1
Changer Command = "/usr/lib/bareos/scripts/mtx-changer %c %o %S %a %d"
}
The pool definitions in my director configuration file (note the full pool is
associated with an initial volume size of 201 bytes and the incremental pool of
199 bytes):
#
# Full Tape Pool definition
#
Pool {
Name = Full_Tape
Pool Type = Backup
Recycle = yes
Recycle Pool = Scratch
AutoPrune = yes # Prune expired volumes
Storage = "ULTRIUM-HH6"
Volume Retention = 365 days #
Maximum Volumes = 100 # Limit number of Volumes in Pool
}
#
# Incremental Pool definition
#
Pool {
Name = Incremental_Tape
Pool Type = Backup
Recycle = yes
Recycle Pool = Scratch
AutoPrune = yes # Prune expired volumes
Storage = "ULTRIUM-HH6"
Volume Retention = 30 days
Maximum Volumes = 100 # Limit number of Volumes in Pool
}
Any help you could give me would be very much appreciated. I am new to bareos
but I am very impressed with its capability. Thank you,
Michael
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