[CentOS] df -h shows system at 100% used, but there is space left
Tom Brown
tom at ng23.net
Wed Apr 29 14:43:17 UTC 2009
>> Has anyone seen output like this before? Notice on my
>> /dev/md0 That it reports 100% used, but also 5.3 Gb
>> available. What would cause this?
>>
>>
>>
>> # df -h
>> Filesystem Size Used Avail Use% Mounted on
>> /dev/sda2 71G 1.6G 66G 3% /
>> /dev/sda1 99M 22M 73M 23% /boot
>> tmpfs 506M 0 506M 0% /dev/shm
>> /dev/md0 903G 851G 5.3G 100% /home
>>
>
> I've never run into the reserved blocks being an issue (even though it
> may be the case here). I have run out of inodes (one per file, and if
> you have a ton of little files...). Run df -i to see what percent inodes
> your using.
>
> Wikipedia has a good explaination of inodes
> (http://en.wikipedia.org/wiki/Inode).
>
sounds like reserved blocks to me also - use tune2fs to turn down the
reserved blocks. That way you'll be able to use that space but be aware
of the future problem that could cause you.
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