21 Aug
2015
21 Aug
'15
2:50 a.m.
On 21/08/15 12:24, Trent W. Buck wrote:
By default mke2fs reserved 5% of the filesystem for uid 0. This is also used as a staging area to reduce fragmentation.
df does not include this area in the "free" size, so if you fill a disk *as root*, you must remove >5% for df to show any change.
30G is about 2% of 1.4T, so that's not enough.
You can remove this reserved area using tune2fs, but that is a bad idea.
Thanks Trent, that would explain the anomaly. I did not know that that the 5% reserved area was accessible to root (I was running the back up as root). Would it be ok to reduce the reserved area to say 1%?