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On Wednesday 05 January 2011 00:55:49 Alex Schuster wrote: |
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> Dale writes: |
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> > Alan McKinnon wrote: |
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> >> Apparently, though unproven, at 15:18 on Tuesday 04 January 2011, |
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> >> Stroller did |
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> >> |
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> >> opine thusly: |
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> >>> I found numerous references to this syntax going back to 2005 or |
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> >>> so, and some major distros seem to use it as the default way of |
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> >>> describing "root=" to the kernel. |
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> >>> |
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> >>> http://www.linuxforums.org/forum/redhat-fedora-linux-help/23010-root-la |
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> >>> bel- grub-conf.html |
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> >>> http://linux.derkeiler.com/Mailing-Lists/RedHat/2005-01/0026.html |
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> >>> |
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> >>> However: |
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> >>> http://old.nabble.com/Re%3A-Using--%22root%3DLABEL%3Dxxxx%22-in-grub.co |
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> >>> nf-p 21909347.html http://tinyurl.com/2u4srg4 |
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> >>> |
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> >>> Stroller. |
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> >> |
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> >> All the major distros I've seen it on also use initrds though (rare in |
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> >> gentoo- land). I have no idea how it all works, I just know how to type |
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> >> it on a RHEL box. |
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> |
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> I am using an initrd, I need it since my root partition is encrypted. |
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> It's generated and copied to /boot with 'genkernel --install --luks |
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> --lvm all', but you have to have CLEAN="no" in /etc/genkernel.conf or |
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> genkernel will create its own .config. |
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> |
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> >> Elsewhere in the thread someone mentioned that this syntax relies on an |
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> >> initrd, and I suspect he may be correct. |
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> |
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> And Stroller's 3rd link also does this. |
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> |
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> > I tried using labels with the old grub a while back and it didn't work. |
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> > Labels in fstab works fine tho. We may have to wait on the new grub to |
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> > get finished |
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> |
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> I would be surprised if it had this feature. AFAIK grub is already done |
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> at this stage, the kernel has taken over. And I guess it does not know |
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> about the LABEL= syntax, and has no code to scan all devices for file |
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> system labels. |
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> With an initramfs, the kernel runs an init script which can do various |
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> stuff, like probing all devices for file system labels. |
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|
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I understand that GRUB2 has bash scripting capabilities which can can use the |
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command 'search' to probe devices at boot time and use things like UUID and |
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LABEL. Not sure if an initrd is required. I could be wrong though - I have |
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not had the time to experiment with it yet. |
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-- |
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Regards, |
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Mick |
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