On 28/09/2013 21:50, Neil Bothwick wrote: > On Sat, 28 Sep 2013 20:11:06 +0200, Volker Armin Hemmann wrote: > >> To merge two filesystems, you just merge two filesystems. You don't >>> rebuild anything. You might have some downtime though >> >> one reboot. You cp everything into /newuser. On shutdown you unmount >> /usr, mv newuser usr, sync, unmount, reboot. >> if you want to do it 'old fashioned', you cp everything to /newuser, >> reboot with systemrescuecd, mount / on /mnt/gentoo, my newuser to usr >> and reboot. Oh, and change fstab. > > It's not that simple if /usr is on LVM, / is not large enough to > hold /usr and resizing the partition is really tricky. In that case, the > simplest option is to start using an initramfs. Once that is working, you > can get rid of the separate root partition and move that filesystem into > the VG too.
First time I did it, I faced that scenario too: / wasn't big enough and I didn't have enough free space anywhere to put a temporary copy. So I juggled everything around in chunks playing the disk-partition equivalent of 15-pieces. Took about a day. What I *should* have done is bought my first external USB drive then, not three years later. -- Alan McKinnon [email protected]
