[Mageia-dev] ANN: Dracut now mounts /usr properly \o/

Anssi Hannula anssi at mageia.org
Fri Dec 16 10:58:31 CET 2011


On 16.12.2011 00:14, Colin Guthrie wrote:
> OK, so this took me a while to actually get around to setting up some
> VMs to test this. Sorry about that :s
> 
> Anyway, I've tested with a / on ext4 + /usr on LVM + ext4.
> 
> With appropriate fixes, I was able to generate an initrd without any
> specific config to tell dracut what to do. There is a caveat. /usr is
> mounted read only. I can tweak this, but by the same token I'm not sure
> I should... It's trivial to do a "mount -o remount,rw /usr" if you want
> to install packages etc. Otherwise, /usr should pretty much be read only
> anyway.. if something tries to modify stuff on /usr that's not part of a
> package installation process that is (IMO) a bug and should be fixed.

IMO init scripts should mount /usr as rw unless /etc/fstab instructs to
mount it as read-only.

> The code for mounting /usr is not the same as how it'll (eventually) be
> done upstream. It only deals with /usr and if you have e.g. /usr/bin on
> a separate partition they you are SOL and will have to wait for the
> upstream version.
> 
> I think however that for the majority of setups the current solutions is
> likely good enough.
> 
> 
> Now, when I installed, dracut wasn't used as initrd, so if no one shouts
> too loudly I'll make it deprecate mkinitrd tomorrow and we can test
> installs where dracut generates the first initrd and see how it fairs.
> 
> Please test and let me know. It's version 014.1mga2
> 
> Col
> 
> 


-- 
Anssi Hannula


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