I seem to be having trouble writing large backups to tape from bacula.
It has been working just fine for months, and within the last 2-3 weeks,
I have started seeing errors and the backups will not complete.
What happens it that it spools to disk, then begins to write to tape.
After 3-9GB of data is written to tape, it seems to sense that the tape
is full and give me the following error:
Data spooling: 1 active jobs, 20,200,011,658 bytes; 1 total jobs,
20,200,011,658 max bytes/job.
Attr spooling: 1 active jobs, 0 bytes; 1 total jobs, 4,245,075 max bytes.
You have messages.
*messages
19-Feb 11:01 longstreet-sd: User specified spool size reached.
19-Feb 11:01 longstreet-sd: Writing spooled data to Volume. Despooling
20,200,011,658 bytes ...
19-Feb 11:06 longstreet-sd: pickett.2007-02-19_10.21.59 Error:
block.c:569 Write error at 9:3794 on device "LTO-2" (/dev/nst0).
ERR=Input/output error.
19-Feb 11:06 longstreet-sd: pickett.2007-02-19_10.21.59 Error: Error
writing final EOF to tape. This Volume may not be readable.
dev.c:1687 ioctl MTWEOF error on "LTO-2" (/dev/nst0). ERR=Input/output
error.
19-Feb 11:06 longstreet-sd: End of medium on Volume "weekly3-LogAn"
Bytes=9,244,182,528 Blocks=143,293 at 19-Feb-2007 11:06.
19-Feb 11:09 longstreet-sd: Please mount Volume "Weekly2-Logan" on
Storage Device "LTO-2" (/dev/nst0) for Job pickett.2007-02-19_10.21.59
I am running bacula on a Fedora Core 6 system, Athlon 64 CPU, 1GB RAM,
Certance LTO-2 1/2-height tape drive (single drive, no changer). I have
searched back through the archives, but didn't see anything that seemed
to apply to my situation or configuration. I did see one topic on
permissions to the tape drive, but adjusting that didn't make any differece.
I have run external diagnostics on the drive, using the btape test, and
Quantum's diagnostic utility. All external tests pass with flying
colors. I have done 180GB r/w tests without a hitch. I have tried
different tapes, new tapes, old tapes, but whatever I do, I keep getting
the same errors.
I can, however, write small jobs to the tape without a problem. I can
run a 1.2GB test backup without a hitch. I can even restore from
multiple small backups on a tape. I only get into trouble when I try to
run one of the main server backups (80-120GB/server).
I've checked the server logs for SCSI errors or timeouts, and don't see
anything significant. I did see one permissions error, and searching on
that in the logs, found a potential solution. It didn't fix the problem.
So, I have tried, and I am now stumped!
SD config follows:
Storage { # definition of myself
Name = longstreet-sd
SDPort = 9103 # Director's port
WorkingDirectory = "/var/bacula"
Pid Directory = "/var/run"
Maximum Concurrent Jobs = 20
}
#
# List Directors who are permitted to contact Storage daemon
#
Director {
Name = longstreet-dir
Password = "magic5"
.
.
.
Device {
Name = LTO-2 #
Media Type = LTO-2
Archive Device = /dev/nst0
AutomaticMount = yes; # when device opened, read it
AlwaysOpen = yes;
RemovableMedia = yes;
RandomAccess = no;
Maximum Spool Size = 20200000000
Spool Directory = /export/backup2
# Changer Command = "/etc/bacula/mtx-changer %c %o %S %a %d"
# Changer Device = /dev/sg0
# AutoChanger = yes
# Enable the Alert command only if you have the mtx package loaded
# Alert Command = "sh -c 'tapeinfo -f %c |grep TapeAlert|cat'"
}
.
.
.
As I mentioned, this used to all work flawlessly, so I am at a loss as
to what I can try next. We did upgrade the box from FC3 to FC6 within
the last few months, but the backups were still running fine after the
upgrade, this trouble only cropped up in the last few weeks.
Any ideas?
Thank you.
Mike
--
Michael L. Morgan
Director of Operations
Iodynamics, LLC
(435) 760-1046
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