The command was:
find / -xdev -print0 | xargs -r0 chattr +e
after converting ext3 to ext4 with tune2fs via
sudo tune2fs -O extents,uninit_bg,dir_index /dev/sda1
The command was:
find / -xdev -print0 | xargs -r0 chattr +e
after converting ext3 to ext4 with tune2fs via
sudo tune2fs -O extents, uninit_ bg,dir_ index /dev/sda1