No space left on device

问题:

When i tried to scp some files to a centos machine, I am getting the error "No space left on device"

I tried

[root@...]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol01 18G   18G     0 100% /

And when I do

du -sh / -> it gives only 5G

[... ~]$ df -i /
Filesystem            Inodes   IUsed   IFree IUse% Mounted on
/dev/mapper/VolGroup00-LogVol01
                     4685824  209516 4476308    5% /

seems like file system is full. How can i find which one is taking these much size?

回答1:

Such difference between the output of du -sh and df -h may happen if some large file has been deleted, but is still opened by some process. Check with the command lsof | grep deleted to see which processes have opened descriptors to deleted files. You can restart the process and the space will be freed.

回答2:

Maybe you are out of inodes. Try df -i

                     2591792  136322 2455470    6% /home
/dev/sdb1            1887488 1887488       0  100% /data

Disk used 6% but inode table full.

回答3:

To list processes holding deleted files a linux system which has no lsof, here's my trick:

    pushd /proc ; for i in [1-9]* ; do ls -l $i/fd | grep "(deleted)" && (echo -n "used by: " ; ps -p $i | grep -v PID ; echo ) ; done ; popd

回答4:

You can execute the following commands

lsof / |grep deleted

kill the process id's, which free up the disk space.