On one of the machines that I oversee there is an issue with the df output that I don't understand.
here's a part of the output from df -h
/dev/sda1 440G 420G 0 100% /backup
if i don't use the -h it looks like this:
/dev/sda1 461293804 440335112 0 100% /backup
It appears that there really are 20Gigs free, but that column shows 0 -- can i reliably ignore that column and use subtraction with the
previous two to compute the true free space?
If I clear up enough more diskspace the 4th column will eventually show more than 0, but it won't be equivalent to the difference of the 2nd
and 3rd. My recollection is that rebooting will fix this problem (for a while), but I'd prefer not to have to reboot every couple weeks.
This machine is running sarge and that partition is ext3 over a RAID5 array. I do slip up on occasion and allow this partition to
completely fill up (not sure if that might be relevant) so that the rsync processes that are writing to it fail (because of no more
remaining disk space).
thanks so much for any hints,