I have a Dell Server with 3 x 73GB SCSI drives configured as RAID 5 by Dell. I'm running a mail server with very weird things happening that seem to indicate a full disk. I tried to mkdir at the root and got a "No space left on device" error. I'm a total linux noob, so any instructions should be very basic.

df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
4.0G 4.0G 0 100% /
/dev/sda3 190M 28M 153M 16% /boot
none 1014M 0 1014M 0% /dev/shm
/dev/mapper/VolGroup00-LogVol05
4.0G 201M 3.6G 6% /home
/dev/mapper/VolGroup00-LogVol03
4.0G 41M 3.7G 2% /tmp
/dev/mapper/VolGroup00-LogVol02
7.9G 2.8G 4.7G 38% /usr
/dev/mapper/VolGroup00-LogVol04
4.0G 1.2G 2.7G 31% /var


df -i
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/mapper/VolGroup00-LogVol00
524288 37979 486309 8% /
/dev/sda3 50400 56 50344 1% /boot
none 223839 1 223838 1% /dev/shm
/dev/mapper/VolGroup00-LogVol05
524288 431 523857 1% /home
/dev/mapper/VolGroup00-LogVol03
524288 100 524188 1% /tmp
/dev/mapper/VolGroup00-LogVol02
1048576 143313 905263 14% /usr
/dev/mapper/VolGroup00-LogVol04
524288 4025 520263 1% /var

There is at least one partition which ran out of space:

This is usually a bad thing. If your /var/ directory is mounted there, you are in trouble.

To see which directories take up that space, go to the root directory of that partition and say:

which give you a list with all directories or files > 10MB

jlinkels

What about directories (maybe even files) over a Gig ???
Might do the job well enough in this case, given the root is only 4Gig.

I don't use the -h as it messes up sort (try it with K and M and maybe G in the same list). I just use a simple The ones you are generally interested in are at the top.