[CentOS] disk space trouble on ec2 instance

On 2/27/2015 10:46 PM, Tim Dunphy wrote:
> I'm at a loss to explain how I can delete 190MB worth of data, reboot the
> instance and still be at 100% usage.

190MB is less than one percent of 9.9GB aka 9900MB

BTW, for cases like this, I'd suggest using df -k or -m rather than -h 
to get more precise and consistent values.


also note, Unix (and Linux) file systems usually have a reserved 
freespace, only root can write that last bit.   most modern file systems 
suffer from severe fragmentation if you completely fill them.   ext*fs, 
you adjust this with `tune2fs -m 1 /dev/sdXX`. XFS treats these reserved 
blocks as inviolable, so they don't show up as freespace, they can be 
changed with xfs_io but should be modified at your own risk.





-- 
john r pierce                                      37N 122W
somewhere on the middle of the left coast