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Hello all,
I'm seeing a strange problem with my bacula-fd clients after upgrading
all of my systems to v2.0.3 (client and server). Intermittently, when
performing a backup of some random client I'll see the following error
in the Director:
30-Mar 02:09 archive2-dir: Start Backup JobId 1046,
Job=guildenstern-a.2007-03-30_01.05.43
30-Mar 02:09 archive2-dir: guildenstern-a.2007-03-30_01.05.43 Fatal
error: Socket error on Storage command: ERR=No data available
30-Mar 02:09 archive2-dir: guildenstern-a.2007-03-30_01.05.43 Error:
Bacula 2.0.3 (06Mar07): 30-Mar-2007 02:09:12
JobId: 1046
Job: guildenstern-a.2007-03-30_01.05.43
Backup Level: Incremental, since=2007-03-29 02:06:06
Client: "guildenstern-a-fd" 2.0.3 (06Mar07)
i686-pc-linux-gnu,debian,3.1
FileSet: "guildenstern" 2007-03-18 21:37:31
Pool: "Daily" (From Run pool override)
Storage: "ADIC-Library1" (From Job resource)
Scheduled time: 30-Mar-2007 01:05:42
Start time: 30-Mar-2007 02:09:05
End time: 30-Mar-2007 02:09:12
Elapsed time: 7 secs
Priority: 10
FD Files Written: 0
SD Files Written: 0
FD Bytes Written: 0 (0 B)
SD Bytes Written: 0 (0 B)
Rate: 0.0 KB/s
Software Compression: None
VSS: no
Encryption: no
Volume name(s):
Volume Session Id: 44
Volume Session Time: 1175201849
Last Volume Bytes: 204,618,000,384 (204.6 GB)
Non-fatal FD errors: 0
SD Errors: 0
FD termination status:
SD termination status: Error
Termination: *** Backup Error ***
If I re-run the job just after the failure, the client works as
expected. I have about 80 clients, all different platforms (Linux,
FreeBSD, and Windows), and this seems to only affect the Linux clients.
Of those Linux clients that are failing it occurs on a variety of
distributions/versions (Debian v3.0 & v3.1, RHEL v3 & v4) and its
hit-or-miss whether a given Linux client will work on the first try or
not, but in all cases I've seen (thus far), the re-run job works fine.
Some days, a given client will work on the first try, and then the next
day it fail, then work again the following day, etc... I determined any
rhyme-or-reason to it other than its just Linux clients that are
affected. Currently, about 30% of my clients on a given day exhibit this
behavior.
To work around the problem I've added the following entries to the
default job resource:
JobDefs {
Name = "DefaultJob"
Type = Backup
Reschedule On Error = yes
Reschedule Times = 3
Reschedule Interval = 90 seconds
...
This does help my regularly-scheduled jobs to complete without having to
manually re-run them, but this is not ideal and I'd like to determine
why the first backup of a given client is failing.
I built and packaged all the Bacula Linux clients myself (so they all
pull from the same set of config files for quick installation), and I
used the following compile-time flags when building them:
- --with-openssl --enable-client-only --enable-static-fd --enable-smartalloc
I'm using the static-bacula-fd binary (instead of the bacula-fd binary)
for maximum portability. They were built on a Debian Sarge host and then
packaged into appropriate distribution packages.
On one of the often-affected hosts I now have the client started with
the following flags (out of /etc/inittab):
/sbin/static-bacula-fd -fvc -d100 /etc/bacula/bacula-fd.conf
>/tmp/bacula-fd.out
When the client fails, I see the modification timestamp update on the
resultant /tmp/bacula-fd.out file, but its currently empty. Do I need to
redirect stderr to this file instead of stdout?
Anyone have any ideas what might be causing these errors or how I can go
about debugging this unusual (and while not critical, still very
annoying) problem?
Thanks!
Michael Proto
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