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Re: Filled up the filesystem. How?



On 6/8/05, dan <info hostinthebox net> wrote:
> Dotan Cohen wrote:
> > On 6/8/05, Alexander Dalloz <ad+lists uni-x org> wrote:
> >
> >>Am Di, den 07.06.2005 schrieb Dotan Cohen um 23:39:
> >>
> >>
> >>>Last week I wrote that I somehow filled 7 out of 10 megs in my linux
> >>>partition. Today that last bit was filled- I am at 100% capacity.
> >>>
> >>>I cannot download email or create new files. What could be the cause
> >>>of this? Where should I look for bloat? What can I delete?
> >>>
> >>>Dotan
> >>
> >>This can easily be happen if log files fill very quickly. I.e. if you
> >>have Apache running, a fault in your page and quite some hits, the
> >>error_log can grow rapidly. So watch out for large log files.
> >>
> >>Alexander
> >>
> >>
> >>--
> >>Alexander Dalloz | Enger, Germany | GPG http://pgp.mit.edu 0xB366A773
> >>legal statement: http://www.uni-x.org/legal.html
> >>Fedora Core 2 GNU/Linux on Athlon with kernel 2.6.11-1.27_FC2smp
> >>Serendipity 23:54:54 up 14 days, 22:32, load average: 0.38, 0.53, 0.49
> >>
> >>
> >>BodyID:69189987.2.n.logpart (stored separately)
> >>
> >>
> >
> >
> > /var/logs is 23 megs (same as last week)
> > /var is 1.3 gigs (same as last week)
> > /usr is 3.7 gigs (same as last week)
> > /proc is 480 megs (same as last week)
> >
> > I only checked those because those were the biggies last week. The
> > system is so slow now that it takes a long time for it to caculate
> > those values. Where else should I look?
> >
> > Dotan
> >
> 
> Dotan -
> 
> Can you show us an output of:
> 
> /sbin/fdisk -l|df -i
> 
> The reason I ask is ebcause I've seen a machine that had been out of
> inodes, as seen by this output.  Pay attention to the "IUse%" column,
> which may provide clues.  If this is the case, /var/log/messages will
> hint at this.
> 
> When a disk is formatted, each unit is designated an allocation size.
> There is one inode for this allocation block size.  If your block size
> is, for example, 4096k, and you have a file that is 2k, then you will
> have used one inode.  You can see how this would be a problem if you had
> hundreds of thousands of very small files, which would make your system
> *think* that it's low on space, just because inodes are not being used
> efficiently.  I've seen this many times on compromised mail servers
> where a spammer has queued up millions of tiny email messages.
> 
> Hope that helps
> -dant
> 
> 

Here is th output:

[root localhost dotancohen]# /sbin/fdisk il|df -i

Unable to open il
Filesystem            Inodes   IUsed   IFree IUse% Mounted on
/dev/mapper/VolGroup00-LogVol00
                     1308160  222207 1085953   17% /
/dev/hda2              26208      50   26158    1% /boot
none                   60413       1   60412    1% /dev/shm
You have new mail in /var/spool/mail/root
[root localhost dotancohen]# 

Also, I ran yum clean all. I run in after every update.

My biggest directories are:
/proc 480 meg
/var 1.8 gig
/usr 3.7 gig
of which:
/usr/lib is 1.7 gig
/usr/share is 1.3 gig

Does that look normal? Where else can I look for bloat? What can I
(safely) erase?

Dotan
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