Hi,

I have a virtual server which I'm trying to backup with Bacula 2.2.8, 
but it keeps crashing the machine.  The machine has 256MB RAM allocated, 
and 512MB swap space (minimal specs I know but it doesn't do a lot!)

While monitoring the server using top, when the backup starts the free 
memory drops steadily from 200MB free down to 2MB, then hovers around 
2-5MB.  The swap space isn't touched.  5 minutes later the machine dies 
with a memory allocation error, still with all 512MB swap space free.

My server provider tells me this is expected, that because it's a single 
process eating into all the RAM, the server can't swap it.  Is this 
true?  I have 2 other servers with the same provider, identical in every 
way except they have 512MB RAM and 1GB swap, and they both backup just 
fine.

Another thing that is different is that on this troublesome machine, the 
bacula startup script (/usr/local/bacula/etc/bacula start) starts 3 
bacula-fd processes, but on all my other machines it only starts 1.  Is 
there any reason for this?

On troublesome server (with backup job disabled):

root ~ # ps aux|grep bacula-fd
root      3160  0.0  0.5  13200  1392 ?        Ss   21:55   0:00 
/usr/local/bacula/sbin/bacula-fd -u root -g root -v -c 
/usr/local/bacula/etc/bacula-fd.conf
root      3162  0.0  0.5  13200  1392 ?        S    21:55   0:00 
/usr/local/bacula/sbin/bacula-fd -u root -g root -v -c 
/usr/local/bacula/etc/bacula-fd.conf
root      3163  0.0  0.5  13200  1392 ?        S    21:55   0:00 
/usr/local/bacula/sbin/bacula-fd -u root -g root -v -c 
/usr/local/bacula/etc/bacula-fd.conf

On other servers (with backup job live as normal):
root ~ # ps aux|grep bacula-fd
root     11114  0.0  0.3  27208  1628 ?        Ssl  19:26   0:00 
/usr/local/bacula/sbin/bacula-fd -u root -g root -v -c 
/usr/local/bacula/etc/bacula-fd.conf

-----------
As you can see from the following commands, killing all the processes 
and starting them again produces the same results:

root ~ # ps aux|grep bacula-fd
root      3160  0.0  0.5  13200  1392 ?        Ss   21:55   0:00 
/usr/local/bacur/local/bacula/etc/bacula-fd.conf
root      3162  0.0  0.5  13200  1392 ?        S    21:55   0:00 
/usr/local/bacur/local/bacula/etc/bacula-fd.conf
root      3163  0.0  0.5  13200  1392 ?        S    21:55   0:00 
/usr/local/bacur/local/bacula/etc/bacula-fd.conf

root ~ # kill 3160
root ~ #

root ~ # ps aux|grep bacula-fd
root ~ #

root ~ # /usr/local/bacula/etc/bacula start
Starting the Bacula File daemon

root ~ # ps aux|grep bacula-fd
root      8255  0.0  0.5  13200  1392 ?        Ss   23:48   0:00 
/usr/local/bacula/sbin/bacula-fd -u root -g root -v -c 
/usr/local/bacula/etc/bacula-fd.conf
root      8256  0.0  0.5  13200  1392 ?        S    23:48   0:00 
/usr/local/bacula/sbin/bacula-fd -u root -g root -v -c 
/usr/local/bacula/etc/bacula-fd.conf
root      8262  0.0  0.5  13200  1392 ?        S    23:48   0:00 
/usr/local/bacula/sbin/bacula-fd -u root -g root -v -c 
/usr/local/bacula/etc/bacula-fd.conf

Thanks,

Andy

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