SUMMARY: problems with disks claiming they are full

From: Brett Lymn <>
Date: Sun Sep 16 2001 - 20:58:49 EDT
Last week I put this message out:

>        I have a few squid caches that I am having problems with, I
>don't believe it to be a squid problem per se (I did ask on the squid
>mailing list anyway) but probably more the way squid uses the file
>system.  What I am seeing is the operating system claiming that the
>disk is full.  From what df is saying at the time - the disk is NOT
>full.  If I do a "df -k" I see plenty of free space, doing a "df -oi"
>shows me plenty of free inodes (the newfs for the partition was done
>to allow for lots of little files) but despite this, sometimes squid
>and the kernel complain that the disk is full!
>I see this happen on both a 2.6 and a 2.7 machine with recommended
>patches, I have tried trawling the SunSolve database without finding
>anything sensible.  Can anyone offer any help here?

Thanks to:

        Alan Clegg
        Bernhard Sadlowski
        Pankaj Anand
        Timothy Lorenc
        Darren Spiteri
        Dietsch, Nathan
        Wesley W. Garland
        Adrian Blount

For their thoughts (though some people seemed not to read all of my
message! ;-).  The answer that best fit my problem came from Adrian
Blount, who pointed me at a portion of the Squid FAQ that I had not
noticed before.  I have changed the settings as per the FAQ and I
will see if that helps.  Here is what Adrian had to say:

        You could have run out of free blocks on the filesystem.  UFS has
        large-ish blocks and when it runs out it can't allocate more.  You
        need to make squid use less of your filesystem (I've found that
        giving squid 7gb of a 9gb filesystem is OK) so there's free space. 
        If the filesystem is full it'll be slower as it tries to find
        contiguous space etc.

        Have a look here under "Tuning":

Brett Lymn, Computer Systems Administrator, BAE SYSTEMS
Received on Mon Sep 17 01:58:49 2001

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