Ryan> Thanks guys, Ive got it all shifted over, remounted /shared
Ryan> as /usr and everything seems to be going fine so far and no
Ryan> rebooting :-).
Wow! I'm too late to reply.
But in case you'd be doing simlar things again:
1) Rebooting is not really necessary.
2) You SHOULD go into single use mode first: telinit s
Why? Because many background processes may be accessing /usr. If
you move the files away, those process may get confused. More
severely, if some processes are modifying /usr, then you cannot
be sure that you've got a clean an consistent _snapshot_ of the
whole /usr into the new partition!
3) After entering single user mode, type "ps" to check if any
unncessary daemons are still running. Kill them if necessary.
(Some programs may still be accessing /usr, making it impossible to
4) Unmount BOTH partitions from their default mount points, just
as a last resort to make sure no programs are still accessing them.
5) mount both partitions to temporary mount points (e.g. something
as impossible to clash as "/tmp/blah1", "/tmp/blah2" :P).
6) transfer the files. Use 'tar', 'cp -aiR' or 'mv'. Check what
options you need to do a recursive copying that still
preserves all file attributes (permission, owner/group setting).
8) umount the file systems.
9) mount the file systems at their new mount points. Use ls, find or
whatever to check if you've got the correct files in the correct
10) modify /etc/fstab to make the change permanent.
11) Go back to multi-user mode: telinit 5 (or 3 if you're not booting
into X directly).
Note that moving the root partition is another story. If you want to
do that, you'd better boot up a floppy-only Linux system and do it
under it. There is no _simple_ way to do (4), (5) and (9) above on a
running system. Without these steps, you can't be sure you have a
consistent snapshot. There is a mechanism like 'initrd' called
pivoting for doing it. But it doesn't worth the trouble.
Exercise: why is there a /bin and also a /usr/bin? Which utilities
should be in /bin and which should be in /usr/bin?
Ryan> I guess I will eventually have to do a reboot just to make
Ryan> sure the adjustments to fstab have worked properly,
Not necessary. Just unmount those 2 partitions, and the do a "mount
/mountpoint". Then, check if they have been mounted correctly.
Ryan> but because I still have my old /usr partition, if it turns
Ryan> into a disco-dancing machine and I get a belly full of lead
Ryan> I can always login as root remount the old /usr partition
Ryan> and be back where I started.
Yeah! That's the safest way to try things out: make sure you can roll
Home page: http://www.informatik.uni-freiburg.de/~danlee