df -h shows disk full, but it's not the case

hypernetics · 11-13-2007, 09:59 AM

Hi folks,

my mailserver crashed two hours ago.
"df -h" shows that the "/"-filesystem (reiser) is full.

By checking the subdirectories via "du -sh" it counts only 1,0GB, altough the partition is sized at 11GB.

How can I check, what's going wrong here?

Thanks for your help.

David1357 · 11-13-2007, 10:37 AM

Quote:

Originally Posted by hypernetics

Hi folks,

my mailserver crashed two hours ago.
"df -h" shows that the "/"-filesystem (reiser) is full.

By checking the subdirectories via "du -sh" it counts only 1,0GB, altough the partition is sized at 11GB.

How can I check, what's going wrong here?

Thanks for your help.

From the man page for "du":

Quote:

--max-depth=N
print the total for a directory (or file, with --all) only if it is N or fewer levels below the command line argument; --max-depth=0 is the same as --summarize

Run "du -h" and you should get the same number as "df -h".

miedward · 11-13-2007, 10:43 AM

I don't know if reiser uses them, but I have run out of inodes (file indexes more or lesS) on systems where there were many many (millions?) of very small files. At least in solaris the inodes are assigned when the volume is formated, so theres a fixed number of them.

You can check to see if this is your problem by doing a

Code:

df -i

hypernetics · 11-13-2007, 10:47 AM

Quote:

Originally Posted by miedward

I don't know if reiser uses them, but I have run out of inodes (file indexes more or lesS) on systems where there were many many (millions?) of very small files. At least in solaris the inodes are assigned when the volume is formated, so theres a fixed number of them.

You can check to see if this is your problem by doing a

Code:

df -i

It seems that Reiser doesn't use inodes :-(

BrianK · 11-13-2007, 02:55 PM

Quote:

Originally Posted by hypernetics

Hi folks,

my mailserver crashed two hours ago.
"df -h" shows that the "/"-filesystem (reiser) is full.

By checking the subdirectories via "du -sh" it counts only 1,0GB, altough the partition is sized at 11GB.

How can I check, what's going wrong here?

Thanks for your help.

Can you post the output of both du & df?

Being that the machine crashed, is it possible / came back up in ro (read only) mode? can you find a useless file & delete it? Can you recreate it?

Are there any RAID arrays on this machine?

What's going on with the other partitions?

jailbait · 11-13-2007, 03:05 PM

"By checking the subdirectories via "du -sh" it counts only 1,0GB, altough the partition is sized at 11GB."

du shows the size of the filesystem. It is possible that your filesystem is smaller than the partition, i.e. the filesystem does not use the entire partition.

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Steve Stites