On Wed, 28 Mar 2012 11:20:25 -0400 Allan Gottlieb <gottl...@nyu.edu> wrote:
> On Tue, Mar 27 2012, Alan McKinnon wrote: > > > All you need is a decent amount of free disk space as you will > > shuffle things around just like in that 15 pieces game. > > This sounds encouraging. My disk is less than half full so space is > not an issue. > > > Assuming / is the first (or second) partition on a disk: > > Question. For me, / is actually /dev/sda5 (sda4 is the extended > partition, the three in front are one dell's special, and two for > windows, the latter only used when contacting dell for diagnostics). > But I think this difference is not material. > > > Measure how much data is on the file system. > > Measure how much data is on the /usr file system. > > Right > > > Move partitions after / on the disk out of the way creating enough > > free space to contain current / and /usr. > > Question. /dev/sda7 is LVM and that is used for /usr, /local, et al. > How do I move an LVM partition? I could make plain partitions and > just copy /usr, /opt, et al., each to a separate partition. Is that > the way? > > > Enlarge / partition, enlarge the file system on it, copy contents > > of /usr there. > > / is ext3, which I believe can be extended live. Or do you recommend > using a gentoo install CD (or equivalent)? > > > Arrange the rest of your disk the way you want it (either with or > > without LVM, both are easy enough to do). > > Move the rest of your data back to it's final destination. > > Delete any last remnants of the old /usr partition. > > This part seems straight forward and not scary since I still would > have the newly created and copied /usr, /opt, et al. partitions in > case something goes wrong. > > So the result would be > > / (including /usr) on one partition (not LVM) > /local, /opt et al., each as separate LVs on my recreated LVM > partition > > I believe this is one of the configurations others have adopted, > which I consider a plus. The other favored configuration is to keep > the current partition scheme and use an initramfs via genkernel, > dracut, or Neil's "in kernel config" soln. > > I would suspect there are second order improvements such as moving > /usr/portage and /usr/src to LVM with symlinks left behind in /usr, > but I am now just concerned to see if I have the basic plan correct. > Have I? What you describe sounds ok, but I'd still hesitate to give a definite answer without a little more data. If you send over the output of df -h du -shx for each partition you have fdisk -l pvdisplay vgdisplay lvdisplay I'll be happy to go over the numbers and offer an opinion. -- Alan McKinnnon alan.mckin...@gmail.com
