Your message dated Wed, 10 May 2006 19:57:58 +0200
with message-id <[EMAIL PROTECTED]>
and subject line Bug#308377: Close me
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--- Begin Message ---
Package: bacula-sd
Version: 1.36.2-2
Severity: normal
I noticed this change in behavior when I upgraded my system from kernel
2.4.27 to 2.6.10. Attempting to position to the end of data on a tape in
order to append backups no longer works:
<unmount>
<mount>
<run something>
09-May 16:02 hamster-sd: Volume "S12021" previously written, moving to
end of data.
09-May 16:04 hamster-sd: ahbase02.2005-05-09_16.02.45 Error: Unable to
position to end of data on device "/dev/nst0". Err=dev.c:494 ioctl MTEOM
error on /dev/nst0. ERR=Input/output error.
<etc>
Everything works fine as long as I don't position to the end of the
tape; for example, I can purge the volume and then bacula is happy to
reuse it, writing from the beginning, and I can continue appending jobs
until it fills up, just like I expected. Restores (where I position into
the middle of the data) work fine too. I have run btest and it claims
that everything is fine (and particularly the append tests all pass).
This problem started specifically when I upgraded my Linux kernel from
2.4 to 2.6. Having spooling enabled or disabled does not affect the
problem. Upgrading through the various 1.36.* versions of Bacula did not
affect the problem.
Here is the device stanza from my /etc/bacula/bacula-sd.conf file:
Device {
Name = TZ89
Media Type = TZ89
Archive Device = /dev/nst0
AlwaysOpen = yes
RemovableMedia = yes
RandomAccess = no
Spool Directory = "/var/spool/backup"
Maximum Spool Size = 10000000000 # A little below 10G
Maximum Job Spool Size = 2000000000 # A little below 2G
}
-- System Information:
Debian Release: 3.1
Architecture: alpha
Kernel: Linux 2.6.10-hamster.5b
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Versions of packages bacula-sd depends on:
ii bacula-common 1.36.2-2 Network backup, recovery and verif
ii debconf 1.4.30.13 Debian configuration management sy
ii libacl1 2.2.23-1 Access control list shared library
ii libc6.1 2.3.2.ds1-21 GNU C Library: Shared libraries an
ii libcomerr2 1.37-2 common error description library
ii libgcc1 1:3.4.3-12 GCC support library
ii libkrb53 1.3.6-2 MIT Kerberos runtime libraries
ii libpq3 7.4.7-6 PostgreSQL C client library
ii libssl0.9.7 0.9.7e-3 SSL shared libraries
ii libstdc++5 1:3.3.5-12 The GNU Standard C++ Library v3
ii libwrap0 7.6.dbs-8 Wietse Venema's TCP wrappers libra
ii zlib1g 1:1.2.2-4 compression library - runtime
-- no debconf information
--- End Message ---
--- Begin Message ---
Bailey, Scott wrote:
>
> Jose,
>
> I'm still waiting for a newer bacula release :-)
>
Go grab it while it still hot!!
deb http://devel.adv-solutions.net/debian unstable main
>
> but in the meantime I finally was able to track down the cause of this
> issue. My system uses the qla1280 SCSI driver for my TZ89 DLT4 drive,
> and it turns out this driver implements 30-second operation timeouts.
> On nearly any tape I used for real work, repositioning commands
> (either EOD or FSF) would take longer than 30 seconds to complete and
> consequently would get aborted.
>
> The problem didn't show up with "btape test" because it writes such a
> small amount of data that the drive is able to complete each of the
> positioning commands in less than 30 seconds and didn't trigger the
> "feature".
>
> I opened bug 366730 against the kernel source for this issue - but it
> is clear now that bacula is not contributing to the problem, so please
> close out my original bug report.
>
Ok. Thanks. Done (with this e-mail)
J.L.
--- End Message ---
