Further update: some couple of hours later, it finished the btape test, failed
with the same set of messages as below.
Cheers,
DJ
________________________________
From: David Jurke [mailto:[EMAIL PROTECTED]
Sent: Wednesday, 26 November 2008 12:01
To: bacula-users@lists.sourceforge.net
Subject: Re: [Bacula-users] Bacula can't append to tapes
Update: after 30 minutes, btape test has moved on a step.
Watch this space...
DJ
________________________________
From: David Jurke
Sent: Wednesday, 26 November 2008 11:30
To: David Jurke; 'bacula-users@lists.sourceforge.net'
Subject: RE: Bacula can't append to tapes
One more bit of information...
I added "Two EOF = yes" to the tape device config, and re-ran the btape test:
-----------------------------
*test
=== Write, rewind, and re-read test ===
I'm going to write 1000 records and an EOF
then write 1000 records and an EOF, then rewind,
and re-read the data to verify that it is correct.
This is an *essential* feature ...
-----------------------------
and it's been sitting there for several minutes now, no sign of activity, I
don't know what it's doing.
Cheers,
DJ
________________________________
From: David Jurke
Sent: Wednesday, 26 November 2008 11:27
To: 'bacula-users@lists.sourceforge.net'
Subject: Bacula can't append to tapes
Hiya Bacula-Users,
I have a number of clients backing up across the network to a dedicated Bacula
backup server. We have an IBM TS3310 (two drives and 30 tape cartridges)
attached to our SAN and presented to the backup server, appearing as three SCSI
IDs.
The problem I have is that Bacula has a problem appending to a previously-used
tape. It's fine if the tape has only just been written to - we have a dozen or
so backup jobs running overnight, and they all write to the same tape quite
happily. But if the tape has been re-loaded between jobs, or (I think - I've
only seen this once) if there's something of a gap between jobs, it complains
and marks the tape in error and fetches a new one. I believe it's a problem
skipping to the end of the tape, it can't find it.
The message I get in the backup job log is this:
------------------------------------------
...
23-Nov 19:56 wnvsvmp1 JobId 1289: Volume "I30043L3" previously written, moving
to end of data.
23-Nov 19:56 wnvsvmp1 JobId 1289: Error: Unable to position to end of data on
device "Tape-0" (/dev/IBMtape1n): ERR=dev.c:1325 read error on "Tape-0"
(/dev/IBMtape1n). ERR=Input/output error.
23-Nov 19:56 wnvsvmp1 JobId 1289: Marking Volume "I30043L3" in Error in Catalog.
23-Nov 19:56 wnvsvmp1 JobId 1289: 3307 Issuing autochanger "unload slot 9,
drive 0" command.
...
------------------------------------------
Tape device config is thus:
-------------------------------------------
Device {
Name = Tape-0
Device Type = Tape
Drive Index = 0
Media Type = LTO-3
Archive Device = /dev/IBMtape1n
AutomaticMount = yes;
AlwaysOpen = yes;
RemovableMedia = yes;
RandomAccess = no;
AutoChanger = yes;
Autoselect = yes;
LabelMedia = yes;
# RECOMMENDED BY btape test
Fast Forward Space File = No
Hardware End of Medium = No
BSF at EOM = yes
Offline on Unmount = yes;
Maximum Changer wait = 600
Spool Directory = /backup/bacula/spool-tape0
Maximum Spool Size = 53687091200 # 50 GB
Alert Command = "sh -c 'tapeinfo -f %c |grep TapeAlert|cat'"
}
-------------------------------------------
(The Spool directives are a red herring, I'm not spooling any more.)
I've tried running btape test, and the first result I got is it failed,
recommended the three lines mentioned above, tried again and Kaboomed.
After putting those three lines in, it works until the append test, which says:
--------------------------------------------
=== Append files test ===
This test is essential to Bacula.
I'm going to write one record in file 0,
two records in file 1,
and three records in file 2
btape: btape.c:475 Rewound "Tape-0" (/dev/IBMtape1n)
btape: btape.c:1577 Wrote one record of 64412 bytes.
btape: btape.c:1579 Wrote block to device.
btape: btape.c:505 Wrote 1 EOF to "Tape-0" (/dev/IBMtape1n)
btape: btape.c:1577 Wrote one record of 64412 bytes.
btape: btape.c:1579 Wrote block to device.
btape: btape.c:1577 Wrote one record of 64412 bytes.
btape: btape.c:1579 Wrote block to device.
btape: btape.c:505 Wrote 1 EOF to "Tape-0" (/dev/IBMtape1n)
btape: btape.c:1577 Wrote one record of 64412 bytes.
btape: btape.c:1579 Wrote block to device.
btape: btape.c:1577 Wrote one record of 64412 bytes.
btape: btape.c:1579 Wrote block to device.
btape: btape.c:1577 Wrote one record of 64412 bytes.
btape: btape.c:1579 Wrote block to device.
btape: btape.c:505 Wrote 1 EOF to "Tape-0" (/dev/IBMtape1n)
26-Nov 11:12 btape: Fatal Error at btape.c:368 because:
dev open failed: dev.c:432 Unable to open device "Tape-0" (/dev/IBMtape1n):
ERR=Input/output error
Append test failed.
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Unable to correct the problem. You MUST fix this
problem before Bacula can use your tape drive correctly
Perhaps running Bacula in fixed block mode will work.
Do so by setting:
Minimum Block Size = nnn
Maximum Block Size = nnn
in your Storage daemon's Device definition.
nnn must match your tape driver's block size, which
can be determined by reading your tape manufacturers
information, and the information on your kernel dirver.
Fixed block sizes, however, are not normally an ideal solution.
Some systems, e.g. OpenBSD, require you to set
Use MTIOCGET= no
in your device resource. Use with caution.
--------------------------------------------
"tapeinfo" says, amongst other things,
MinBlock: 1
MaxBlock: 16777215
so I suspect the tape drive is not in fixed block mode. At which point I'm at a
loss what I should do.
Any suggestions, anyone? Do I need to throw caution to the winds and set "Use
MTIOCGET=no"?
Thanks,
David.
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