ext3 online resize woes
Once again I tried ext3 instead of the flawless working xfs and when I ran out of space on /usr (I tend to be very conservative with LVM size as I am used to grow it with xfs_growfs) I tried resize2fs to online resize it.
resize2fs 1.39 (29-May-2006) Filesystem at /dev/apollon0/usr is mounted on /usr; on-line resizing required Performing an on-line resize of /dev/apollon0/usr to 2097152 (1k) blocks. resize2fs: Operation not permitted While trying to add group #128
Great, I'm switching back to xfs, that works flawless.