[linux-lvm] Not allowed to fill filesystem to 100%???

[Galen Seitz]

Chris Hoover <revoohc at gmail.com> wrote:

> Question,
> 
> We have created some 300 GB lvm2 (RH 4.0 AS)  filesystems for our
> PostgreSQL databases.  However, we tried to copy one of the larger
> filesystems over to the new lvm filesystem and the copy abended due to
> being.  The system was reporting that the file system was 100% full
> with 0 blocks free.  However, a df reported almost 16GB free.
> 
> What's up with this?  Why is this large amount of space unavailable to
> a normal user?

If it's an ext2/3 filesystem, the default reserved space is 5%.  Check
the man pages for mke2fs and tune2fs.

galen