* Re: [gentoo-user] LVM, /usr and really really bad thoughts.
@ 2012-03-11 18:26 99% ` Canek Peláez Valdés
0 siblings, 0 replies; 1+ results
From: Canek Peláez Valdés @ 2012-03-11 18:26 UTC (permalink / raw
To: gentoo-user
2012/3/11 Jorge Martínez López <jorgeml@gmail.com>:
> Hi!
>
> I had some struggle with a separate /usr on top of LVM and the dracut
> thing. I noticed that udev was complaining at boot that it could not
> find some scripts.
>
> The usmount dracut module did not work for me because it could not
> find /usr. So what I did was to include the fstab-sys smodule in
> dracut:
>
> /etc/dracut.conf
>
> # Dracut modules to omit
> omit_dracutmodules+="usrmount"
>
> # Dracut modules to add to the default
> add_dracutmodules+="fstab-sys"
>
> Then I created /etc/fstab.sys with just the /usr partition
>
> /dev/disk/by-uuid/90d82b02-e6c2-4011-940e-783d12b0c4fe /usr ext4 noatime 1 2
>
> Dracut could only find the partition by using the uuid (use blkid to
> find it easily).
> The next step was to remove /usr from /etc/fstab to prevent /usr from
> being mounted twice (the boot process does not like it).
Mmmh. Could you try to use LABEL= in /etc/fstab (not /etc/fstab), and
see if that way it gets mounted, and only once? The udev developers
recommend using either UUID or LABEL; and LABEL it's easier (and
prettier) to set.
> The last obstacle is /etc/mtab. By the time /usr is mounted I believe
> / is mounted as read only, so mount cannot update /etc/mtab. The
> trivial solutions is to delete /etc/mtab and make it a symlink to
> /proc/mounts . In that case it is always up to date.
I think the link is to /proc/self/mounts; /proc/mounts it's a link to
it, actually.
> Of course, YMMV. Be careful when changing things that can prevent your
> machine from booting and make sure you have a live CD at hand.
Good advice. Regards.
--
Canek Peláez Valdés
Posgrado en Ciencia e Ingeniería de la Computación
Universidad Nacional Autónoma de México
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2012-03-10 2:48 [gentoo-user] LVM, /usr and really really bad thoughts Dale
2012-03-10 10:58 ` pk
2012-03-10 15:35 ` Neil Bothwick
2012-03-10 20:50 ` pk
2012-03-11 2:36 ` Canek Peláez Valdés
2012-03-11 9:37 ` pk
2012-03-11 12:16 ` Jorge Martínez López
2012-03-11 18:26 99% ` Canek Peláez Valdés
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