diff options
Diffstat (limited to 'zarb-ml/mageia-dev/2013-February/022947.html')
| -rw-r--r-- | zarb-ml/mageia-dev/2013-February/022947.html | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/zarb-ml/mageia-dev/2013-February/022947.html b/zarb-ml/mageia-dev/2013-February/022947.html new file mode 100644 index 000000000..f4284ea66 --- /dev/null +++ b/zarb-ml/mageia-dev/2013-February/022947.html @@ -0,0 +1,204 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> +<HTML> + <HEAD> + <TITLE> [Mageia-dev] System doen't boot with LVM + </TITLE> + <LINK REL="Index" HREF="index.html" > + <LINK REL="made" HREF="mailto:mageia-dev%40mageia.org?Subject=Re%3A%20%5BMageia-dev%5D%20System%20doen%27t%20boot%20with%20LVM&In-Reply-To=%3C512245AC.3060006%40colin.guthr.ie%3E"> + <META NAME="robots" CONTENT="index,nofollow"> + <META http-equiv="Content-Type" content="text/html; charset=us-ascii"> + <LINK REL="Previous" HREF="022946.html"> + <LINK REL="Next" HREF="023012.html"> + </HEAD> + <BODY BGCOLOR="#ffffff"> + <H1>[Mageia-dev] System doen't boot with LVM</H1> + <B>Colin Guthrie</B> + <A HREF="mailto:mageia-dev%40mageia.org?Subject=Re%3A%20%5BMageia-dev%5D%20System%20doen%27t%20boot%20with%20LVM&In-Reply-To=%3C512245AC.3060006%40colin.guthr.ie%3E" + TITLE="[Mageia-dev] System doen't boot with LVM">mageia at colin.guthr.ie + </A><BR> + <I>Mon Feb 18 16:15:56 CET 2013</I> + <P><UL> + <LI>Previous message: <A HREF="022946.html">[Mageia-dev] System doen't boot with LVM +</A></li> + <LI>Next message: <A HREF="023012.html">[Mageia-dev] System doen't boot with LVM +</A></li> + <LI> <B>Messages sorted by:</B> + <a href="date.html#22947">[ date ]</a> + <a href="thread.html#22947">[ thread ]</a> + <a href="subject.html#22947">[ subject ]</a> + <a href="author.html#22947">[ author ]</a> + </LI> + </UL> + <HR> +<!--beginarticle--> +<PRE>'Twas brillig, and Olivier Thauvin at 18/02/13 14:55 did gyre and gimble: +><i> * Colin Guthrie (<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">mageia at colin.guthr.ie</A>) wrote: +</I>>><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>><i> +</I>><i> Ha, no, I followed the howto on the wiki: +</I>><i> <A HREF="https://wiki.mageia.org/en/Feature:UsrMove">https://wiki.mageia.org/en/Feature:UsrMove</A> +</I>><i> +</I>><i> and there is no reference to this package on the page :\ +</I> +Yeah, I noticed that too this morning :s I'll update it (I could have +sworn I had already, but.... I guess not - it was posted about quite a +lot on the list but that's fairly transient and no excuse for my general +failure to update the wiki!). + +The mageia-prepare-upgrade package is just a nice wrapper around those +commands anyway, so you should be 99% OK with those commands all the +same (although they certainly are more complicated than they now need to +be - they were originally written for cauldron users during the +transition process rather than a clean mga2->mga3, so this explains +where there are urpmi commands with skip etc. in them. I think the time +is such that I can remove some of that detail from the page - the number +of cauldron users running pre-usrmove must be ~= 0 by now :) + +>><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>><i> +</I>><i> The entry in grub is fine (just checked it). +</I> +Good :) + +>>>><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> +</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>><i> +</I>><i> This method did work and I am now under linux. +</I> +Yay! Lucky that the 51-mageia-resume.conf file caused the lvm module to +be included in the first place otherwise the initrd wouldn't have the +lvm command in it at all :D + +><i> What can I do to understand why dracut did not detect the lvm to +</I>><i> activate properly (and hopefully fix this definitivelly) ? +</I> +Basically, the best bet is to run something like the following (as root): + +dracut -f foo.img +mkdir foo +cd foo +zcat ../foo.img | cpio -id +cat etc/cmdline.d/lvm.conf + +This should test whether your / lvm has been detected in addition to the +swap one. + +I sort of hope that this fails, otherwise the problem will be harder to +nail down!! + +If it does fail then ultimately the problem will be in: +/usr/lib/dracut/modules.d/90lvm/module-setup.sh (or one of the utility +functions it uses). It should use "udevadm info" to query the system +about LVM info. You can add debug to the check_lvm function and then +re-run dracut -f foo.img again to see where it bails out. + + +If, however, it works fine on your running system then perhaps the +problem is with the installer lacking some udev rules to properly +capture all the needed metadata in udev database. This will require a +bit more fiddling (i.e. running udevadm info in the installer to look at +the properties it exports about the devices). + +>><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>><i> +</I>><i> This has work except I was unable to enter my passphrase to read my +</I>><i> encrypted /home. +</I> +Ahh yes, the "lvm vgchange -ay" is a bit of a "enable everything" +command (normally the initrd only initialises what it absolutely must - +e.g. /, /usr and swap for resume= support). I guess it might mess up the +passphrase stuff later on as a knock on effect, but really /home (and +any passphrase needed for it) should be the domain of the booted system +rather than the initrd (in theory!) + +><i> But it's good to know this is posible. +</I> +Yeah. the lvm command is only included if dracut detects lvm as being +needed. In your current example it was somewhat fortunate that your swap +was on LVM and the 51-mageia-resume.conf file detailed that. This +51-mageia-resume.conf is a bit of a hack really... I should likely find +a nicer way to do it without hard-coded configs :) + +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> + + + + + + + + + + + + + + + + + + + + +<!--endarticle--> + <HR> + <P><UL> + <!--threads--> + <LI>Previous message: <A HREF="022946.html">[Mageia-dev] System doen't boot with LVM +</A></li> + <LI>Next message: <A HREF="023012.html">[Mageia-dev] System doen't boot with LVM +</A></li> + <LI> <B>Messages sorted by:</B> + <a href="date.html#22947">[ date ]</a> + <a href="thread.html#22947">[ thread ]</a> + <a href="subject.html#22947">[ subject ]</a> + <a href="author.html#22947">[ author ]</a> + </LI> + </UL> + +<hr> +<a href="https://www.mageia.org/mailman/listinfo/mageia-dev">More information about the Mageia-dev +mailing list</a><br> +</body></html> |