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+ <H1>[Mageia-dev] Issues with dracut</H1>
+ <B>Colin Guthrie</B>
+ <A HREF="mailto:mageia-dev%40mageia.org?Subject=Re%3A%20%5BMageia-dev%5D%20Issues%20with%20dracut&In-Reply-To=%3C4EED5763.9020108%40colin.guthr.ie%3E"
+ TITLE="[Mageia-dev] Issues with dracut">mageia at colin.guthr.ie
+ </A><BR>
+ <I>Sun Dec 18 04:00:51 CET 2011</I>
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+<PRE>'Twas brillig, and David W. Hodgins at 18/12/11 00:04 did gyre and gimble:
+&gt;<i> On Sat, 17 Dec 2011 15:21:14 -0500, Colin Guthrie
+</I>&gt;<i> &lt;<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">mageia at colin.guthr.ie</A>&gt; wrote:
+</I>&gt;<i>
+</I>&gt;&gt;<i> Dracut should install all dynamic libs needed by apps. Which app needs
+</I>&gt;&gt;<i> this library specifically?
+</I>&gt;<i>
+</I>&gt;<i> When I tried to boot after running dracut with the default config, I
+</I>&gt;<i> was dropped to a shell, with the non-lvm root mounted.
+</I>&gt;<i>
+</I>&gt;<i> I then tried running &quot;/sbin/lvm vgchange -a y --ignorelockingfailure&quot;,
+</I>&gt;<i> and it failed due to the missing libncursesw.so.5 module.
+</I>&gt;<i>
+</I>&gt;<i> Now that I think about it, a bit more, I think I had already been
+</I>&gt;<i> chrooted into the root, so since /usr hadn't been mounted, of course
+</I>&gt;<i> the module could not be accessed. Something else must have gone wrong
+</I>&gt;<i> before the chroot, that I didn't see.
+</I>
+Ahhh interesting. Could have been a filesystem check error. What
+filesystem do you have on your /usr ? (obviously on top of the lvm layer).
+
+Did typing &quot;mount /usr&quot; just work? After that (and typing exit) does
+everything work as expected?
+
+&gt;<i> Do you have /usr on a logical volume?
+</I>
+In my test VM yes, I had / on ext4 and /usr on LVM also with ext4.
+
+&gt;<i> I've figured out now, that /lib/dracut/hooks/pre-pivot/50mount-usr.sh is
+</I>&gt;<i> failing, as lvm has not yet been activated.
+</I>
+That's strange, as lvm should be activated by then. Was the lvm module
+included in your ramfs? The latest version should detect LVM on the /usr
+partition, but it's perhaps not full proof (I only tested it in my test
+vm when I wrote it).
+
+&gt;<i> Later, I'm dropped to a shell, after the switch to the new root, and
+</I>&gt;<i> since /usr hasn't been mounted, any commands that try to load
+</I>&gt;<i> /usr/lib/libncursesw.so.5 such as lvm, grep, or less, will fail.
+</I>&gt;<i>
+</I>&gt;<i> When I've copied /usr/lib/libncursesw.so.5* to /lib and run ldconfig,
+</I>&gt;<i> it still fails in 50mount-usr, but succeeds later, after the root
+</I>&gt;<i> switch.
+</I>&gt;<i>
+</I>&gt;<i> The dm-mod module loading, and the &quot;lvm vgchange -ay --sysinit&quot; command
+</I>&gt;<i> should be run before looking for the root file system, as it too could be
+</I>&gt;<i> on a logical volume.
+</I>
+They all should be (and are for me). I suspect the missing link is that
+the lvm module is not being included in your ramfs... If we can work out
+why it would be great.
+
+The shell script you'll need to tweak is
+/usr/lib/dracut/modules.d/90lvm/module-setup.sh.
+
+The code is fairly easy to follow and you can probably hack out the bits
+to make it a simple runable script to see if you can work out why lvm is
+not being included.
+
+Col
+
+--
+
+Colin Guthrie
+colin(at)mageia.org
+<A HREF="http://colin.guthr.ie/">http://colin.guthr.ie/</A>
+
+Day Job:
+ Tribalogic Limited <A HREF="http://www.tribalogic.net/">http://www.tribalogic.net/</A>
+Open Source:
+ Mageia Contributor <A HREF="http://www.mageia.org/">http://www.mageia.org/</A>
+ PulseAudio Hacker <A HREF="http://www.pulseaudio.org/">http://www.pulseaudio.org/</A>
+ Trac Hacker <A HREF="http://trac.edgewall.org/">http://trac.edgewall.org/</A>
+</PRE>
+
+
+
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