[CentOS] need to free space on a root partition.

Yan Yu yan2yu2 at facebook.com
Sat Jan 2 07:49:44 UTC 2010


thanks for the tip!
On Jan 1, 2010, at 11:13 PM, Barry Brimer wrote:

>
>
> On Fri, 1 Jan 2010, Yan Yu wrote:
>
>> Hello, there,   Happy new year everyone!
>>   I am puzzled here. Could some expert help me shed some light on
>> this?
>> this may not be a centos specific Q..
>> i have a linux machine. and the root partition (/) is full..
>> so I moved a dir from /data to /var (/var is on a different
>> partition), and created a link from /data/fa to /var/xyz, the files
>> under /var/xyz is about 8G,
>> du  /var/fa
>> 8701248 /var/fa
>>
>> so I thought this should free some space for me, but when I used df,
>> it gave me similar results before and after the move..   and my rpm
>> installation would fail due to the lack of space..
>>
>> Filesystem           1K-blocks      Used Available Use% Mounted on
>> /dev/cciss/c0d0p6     15235040  15232452         0 100% /
>> /dev/cciss/c0d0p8    other partitions have free space....
>>
>> I was confused on why moving a 8G file to another partition did not
>> free some space for me?
>> and I did see that the disk usage for the destination partition/disk
>> increases after the move..
>>
>> any pointer is appreciated!
>
> If you do an "lsof" and look for anything that says "deleted" that is
> something that has been deleted from disk but is still open  
> somewhere and
> the disk space can not be reclaimed until the process that has the  
> file
> open lets go of the file.  You also may have hard links to files in  
> other
> directories that will not allow the disk space to be freed as well.
>
> Barry
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