On Wed, Sep 7, 2011 at 7:55 PM, Neil Bothwick <n...@digimed.co.uk> wrote: > On Wed, 7 Sep 2011 19:04:17 -0400, Canek Peláez Valdés wrote: > >> > Putting it on a logical volume is one advantage, allowing /usr to be >> > resized should the need arise. >> >> Why not allow / to be resized entirely? You probably will take the >> machine off-line anyway. > > Because you can't boot from an LV, so you'd than need a separate /boot > and an initramfs. Without LVM, you are unlikely to be able to resize / > or /usr as it is not usually the last partition on the drive.
So, you guys want a separated /usr, but don't want a separate /boot. Awesome. >> >> Mounting it read-only >> >> seems the only sensible one, and then I think is better to go all the >> >> way and mount / read-only. >> > >> > Putting /etc on a read-only filesystem seems a really bad idea. >> >> mount -o remount,rw / >> emerge --sync && emerge -uDNv world >> dispatch-conf >> mount -o remount,ro / >> >> Or, if you only want to modify some configuration file (which in a >> sane environment doesn't happen that often): >> >> mount -o remount,rw / >> adduser fulano ... >> mount -o remount,ro / > > This is longer than the init script needed in an initramfs. I wonder what > problems you'd have when booting as the kernel tries to update the likes > of /etc/mtab on a read-only fs. # ls -l /etc/mtab lrwxrwxrwx 1 root root 17 Dec 1 2010 /etc/mtab -> /proc/self/mounts I don't see any problem at all. >> Again, I don't see the reason for a separated /usr. > > That doesn't mean there aren't several valid reasons to do so. I didn't say they were invalid, I say that *I* don't see the reason to separate /usr. The arguments exposed just don't convice me. But anyway, you will be able to do it with an initramfs. >> But *again*, if >> that's what you want, you will be able to do it. You will just need an >> initramfs. > > I neither have nor need one at the moment, which means this update will > break my system. Then don't update. Wanna keep up with upstream? Then accept that sometimes you will need to change your setup, and change how you do stuff. Regards. -- Canek Peláez Valdés Posgrado en Ciencia e Ingeniería de la Computación Universidad Nacional Autónoma de México
