mfs is getting full (/etc/rc.diskless2)

[Bill Vermillion]

Shakespeare wrote plays and sonnets which will last an eternity, 
but on Fri, Nov 28, 2003 at 10:16 , Vincent Goupil wrote:

> It wasn't the logfile directly, I delete logfiles that has been
> rotated (like .0.gz)

But if you did that with the apache log files - if they were in
var, you can't use syslog to rotate them.  The files will stay
open.  You have to stop and restart apache, or use the 'rotatelogs'
that comes with Apache.

If you don't have Apache log files some other file - one that keeps
a file open but does not close it each time it writes - can give
you the same results.

Bill
> 
> 
> -----Original Message-----
> From: Bill Vermillion [mailto:bv at wjv.com]
> Sent: 27 novembre, 2003 21:33
> To: freebsd-fs at freebsd.org
> Subject: Re: mfs is getting full (/etc/rc.diskless2)
> 
> 
> Earlier in the linear time track, on approximately Thu, Nov 27, 2003 at
> 18:26 ,
> Vincent Goupil divulged this public information:
> 
> 
> > I've setup a firewall with a compact flash instead of a hard-drive.  This
> is
> > the output of mount:
> > /dev/ad0s2a on / (ufs, local, read-only)
> > mfs:17 on /var (mfs, asynchronous, local)
> > procfs on /proc (procfs, local)
> > mfs:36 on /dev (mfs, asynchronous, local)
> 
> > As you see, I mount the compact flash as read-only and I setup a memory
> > filesystem for /var
> 
> > In my rc.conf file:
> > diskless_mount="/etc/rc.diskless2"
> > varsize="131072"
> 
> > Output of: df
> > Filesystem  1K-blocks   Used Avail Capacity  Mounted on
> > /dev/ad0s2a    229942 197570 13978    93%    /
> > mfs:17          63471  56584  1810    97%    /var
> > procfs              4      4     0   100%    /proc
> > mfs:36           1503     66  1317     5%    /dev
> > 
> > Output of: df -h
> > Filesystem    Size   Used  Avail Capacity  Mounted on
> > /dev/ad0s2a   225M   193M    14M    93%    /
> > mfs:17         62M    55M   1.8M    97%    /var
> > procfs        4.0K   4.0K     0B   100%    /proc
> > mfs:36        1.5M    66K   1.3M     5%    /dev
> > 
> > Output of: du -h -d 1 /var
> > 364K    /var/db
> > 1.0K    /var/account
> > 3.0K    /var/at
> > 1.0K    /var/backups
> > 1.0K    /var/crash
> > 2.0K    /var/cron
> > 1.0K    /var/empty
> > 5.0K    /var/games
> > 1.0K    /var/heimdal
> > 3.2M    /var/log
> >  31K    /var/mail
> > 2.0K    /var/msgs
> > 1.0K    /var/preserve
> >  47K    /var/run
> > 1.0K    /var/rwho
> >  16K    /var/spool
> > 3.0K    /var/tmp
> > 1.0K    /var/yp
> > 1.6M    /var/mrtg
> > 2.0K    /var/ucd-snmp
> > 5.3M    /var
> > 
> > Output of: du -d 1 /var
> > 364     /var/db
> > 1       /var/account
> > 3       /var/at
> > 1       /var/backups
> > 1       /var/crash
> > 2       /var/cron
> > 1       /var/empty
> > 5       /var/games
> > 1       /var/heimdal
> > 3299    /var/log
> > 31      /var/mail
> > 2       /var/msgs
> > 1       /var/preserve
> > 47      /var/run
> > 1       /var/rwho
> > 16      /var/spool
> > 3       /var/tmp
> > 1       /var/yp
> > 1670    /var/mrtg
> > 2       /var/ucd-snmp
> > 5456    /var
> 
> > It seems to have a big difference between
> > the output of df and du (I know, I read
> > http://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/disks.html#
> > DU-VS-DF ), but it's now explaining everything. I could be the
> > way I setup it.
> 
> > My problem is, my /var partition is getting filled very quickly
> > and I don't know why ? I don't know what to clean. I've already
> > deleted some log, but I saved only 2% of free space or 1000
> > block.
> 
> > I don't know what is taking all this space ?  Any ideas ?
> 
> It sounds like you deleted some log file that the system keeps
> open.  So it will keep using up disk space even though the name is
> gone.  A file is not deleted until the last link is gone and if the
> file is opened for loging by a program that never releases the file
> that is your problem.
> 
> At that point the easiest way is to reboot.    Then find out what
> you are logging and stop the things you don't need.  When a log
> gets full DO NOT remove it.  Null it out. 
> 
> Just doing    > <logfilename>     should empty the log and reset
> the pointer back to the first of the file and release all blocks in
> use.
> 
> Bill
> -- 
> Bill Vermillion - bv @ wjv . com
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-- 
Bill Vermillion - bv @ wjv . com