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<H1>[Mageia-dev] System doen't boot with LVM</H1>
<B>Olivier Thauvin</B>
<A HREF="mailto:mageia-dev%40mageia.org?Subject=Re%3A%20%5BMageia-dev%5D%20System%20doen%27t%20boot%20with%20LVM&In-Reply-To=%3C20130218145516.GA20846%40virgo.nanardon.zarb.org%3E"
TITLE="[Mageia-dev] System doen't boot with LVM">nanardon at nanardon.zarb.org
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<I>Mon Feb 18 15:55:16 CET 2013</I>
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<PRE>* Colin Guthrie (<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">mageia at colin.guthr.ie</A>) wrote:
><i> 'Twas brillig, and Olivier Thauvin at 18/02/13 12:48 did gyre and gimble:
</I>><i> > So ok, I just update my freshly installed mga2 to cauldron using network
</I>><i> > install (live upgrade don't work, it seems urpmi fail to find a way to
</I>><i> > update the system w/o filesystem).
</I>><i> >
</I>><i> > I have the exact same result: it don't boot.
</I>><i>
</I>><i> Hmm, re: live upgrade are you meaning just a urpmi based upgrade? If so,
</I>><i> I've done a few similar updates in the last week or so in VMs and it's
</I>><i> always been OK. I presume you installed the mageia-prepare-upgrade
</I>><i> package from mga2/core/updates_testing, rebooted to the boot menu entry
</I>><i> created by that package before upgrading?
</I>
Ha, no, I followed the howto on the wiki:
<A HREF="https://wiki.mageia.org/en/Feature:UsrMove">https://wiki.mageia.org/en/Feature:UsrMove</A>
and there is no reference to this package on the page :\
><i> Regarding the network install based upgrade there may be issues relating
</I>><i> to bootloader config tools (in drakx) that related the use of the blkid
</I>><i> cache which might make it miss the whole LVM volume (I've seen it
</I>><i> manifest itself as putting "root=/dev/" into grubs menu.lst rather than
</I>><i> "root=/dev/mapper/foo").
</I>
The entry in grub is fine (just checked it).
><i> >> In the dracut shell, what does /etc/cmdline.d/lvm.conf say? It should
</I>><i> >> contain enough info to brink up both the root and the swap lvm.
</I>><i> >
</I>><i> > rd.lvm.lv=sagittarius/swap
</I>><i>
</I>
><i> The problem is that dracut itself is not detecting that the LV needs
</I>><i> activating when it runs.
</I>><i>
</I>><i>
</I>><i> In order to get a booting system, just pass "rd.lvm.lv=sagitarius/slash"
</I>><i> on the command line (obviously substituting the real name of your
</I>><i> logical volume). This should make dracut initialise the lvm automatically.
</I>
This method did work and I am now under linux.
What can I do to understand why dracut did not detect the lvm to
activate properly (and hopefully fix this definitivelly) ?
><i>
</I>><i> You should (at least in theory) also just be able to type something like
</I>><i> "lvm vgchange -ay" into the dracut shell, then type exit (perhaps twice)
</I>><i> to continue the boot process.
</I>
This has work except I was unable to enter my passphrase to read my
encrypted /home.
But it's good to know this is posible.
--
Olivier Thauvin
CNRS - LATMOS
♖ ♘ ♗ ♕ ♔ ♗ ♘ ♖
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