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I've run into a weird problem with ClamAV that I have been unable to resolve, due to a incredibly non-informative error message.

I've installed ClamAV via aptitude on an Ubuntu box (ClamAV 0.96.5/13202 according to the system) up on EC2 and it is 100% stock. We have an additional drive mounted under /mnt where we put all our log files.

When I start it up with the log files in the default location, it runs just fine. However, if I change the configuration file from /var/log/clamav/clamav.log to /mnt/clamav/clamav.log I get the error

ERROR: Can't open /mnt/clamav/clamav.log in append mode (check permissions!).
ERROR: Can't initialize the internal logger

It's the same file with the same permissions on it, just in a different location.

Any thoughts or tips on how to resolve this problem would be greatly appreciated.

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Have you tried just making a soft link from the file that clamAV usually expects to your own log file to write to on /mnt? – Wilshire Jun 16 '11 at 20:05
Yep, tried that and I get the same error about checking permissions – GrumpyCanuck Jun 16 '11 at 20:09

Check to make sure the permissions are set so that clam can actually write to /mnt/clamav/clamav.log. You can use chmod to change the permissions of the file. It could also be that the the drive mounted is stated in /etc/fstab to be read-only.

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I can definitely write to /mnt as I copied the file there. It has the same ownership and permissions as the one in /var/log/clamav. – GrumpyCanuck Jun 16 '11 at 20:15
can you add your /etc/fstab config for /mnt/clamav and the file permission listing for the file from ls -l to your original question then for clarification. Thanks! – Wilshire Jun 16 '11 at 20:19
File permissions: /var/log/clamav/clamav.log -rw-r----- 1 clamav adm 3364 2011-06-16 20:07 clamav.log – GrumpyCanuck Jun 16 '11 at 20:25
For /etc/fstab and the /mnt directory: /dev/sdb /mnt auto defaults,nobootwait,comment=cloudconfig 0 0 – GrumpyCanuck Jun 16 '11 at 20:27
For /mnt/clamav/clamav.log (where I want the file to be) -rw-r----- 1 clamav adm 1879 2011-06-16 19:47 /mnt/clamav/clamav.log – GrumpyCanuck Jun 16 '11 at 20:28

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