Bug 307855

Summary:	genkernel: root on lvm gen-initramfs.sh fail
Product:	Gentoo Hosted Projects	Reporter:	Pavel V Samsonov <samsonov>
Component:	genkernel	Assignee:	Gentoo Genkernel Maintainers <genkernel>
Status:	RESOLVED FIXED
Severity:	normal	CC:	mail, sping
Priority:	High	Keywords:	InVCS
Version:	unspecified
Hardware:	x86
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:
Bug Blocks:	351772

Description Pavel V Samsonov 2010-03-05 07:35:50 UTC

I have root fs on LVM. I do:
genkernel --lvm all
and result:
* initramfs: >> Initializing...
*         >> Appending base_layout cpio data...
*         >> Appending auxilary cpio data...
*         >> Appending busybox cpio data...
*         >> Appending lvm cpio data...
*           LVM: Adding support (using local static binaries)...
*         >> Appending modules cpio data..

ls /boot
initramfs-genkernel-x86-2.6.31-gentoo-r10-psn
kernel-genkernel-x86-2.6.31-gentoo-r10-psn

I verify (extract initramfs):
cp /boot/initramfs-genkernel-x86-2.6.31-gentoo-r10-psn /root/initramfs-genkernel-x86-2.6.31-gentoo-r10-psn.gz
mkdir /root/initramfs
cd /root/initramfs
gunzip ../initramfs-genkernel-x86-2.6.31-gentoo-r10-psn.gz
cpio -i < ../initramfs-genkernel-x86-2.6.31-gentoo-r10-psn
cd bin
ls -l
-rwxr-xr-x 9 root root 1093640 Мар  5 10:29 [
-rwxr-xr-x 9 root root 1093640 Мар  5 10:29 ash
-rwxr-xr-x 9 root root 1093640 Мар  5 10:29 busybox
-rwxr-xr-x 9 root root 1093640 Мар  5 10:29 cat
-rwxr-xr-x 9 root root 1093640 Мар  5 10:29 cut
-rwxr-xr-x 9 root root 1093640 Мар  5 10:29 echo
-r-xr-xr-x 1 root root 1271836 Мар  5 10:29 lvm
-rwxr-xr-x 9 root root 1093640 Мар  5 10:29 mount
-rwxr-xr-x 9 root root 1093640 Мар  5 10:29 sh
-rwxr-xr-x 9 root root 1093640 Мар  5 10:29 uname


Static /bin/lvm present, but symlinks vgchange->lvm and vgscan->lvm not present. To do this, I patch /usr/share/genkernel/gen_initramfs.sh (lvm section).



Reproducible: Always

Comment 1 Alex Legler (RETIRED) archtester

2010-03-05 12:17:13 UTC

*** Bug 307859 has been marked as a duplicate of this bug. ***

Comment 2 Alex Legler (RETIRED) archtester

2010-03-05 12:17:23 UTC

*** Bug 307857 has been marked as a duplicate of this bug. ***

Comment 3 Andrew Gaffney (RETIRED) gentoo-dev

2010-03-05 13:54:20 UTC

What version of genkernel? Patch it how?

Comment 4 Kai Dietrich 2010-04-30 13:04:51 UTC

I hit that same bug when switching from my custom initrd to the genkernel initrd.

The /init script inside the initramfs is supposed to generate the vgscan and vgchange symlinks. Here is the code snippet:

if [ "$0" = '/init' ]
then
        [ -e /linuxrc ] && rm /linuxrc

        if [ -e /bin/lvm ]
        then
                ln -s /bin/lvm /bin/vgscan
                ln -s /bin/lvm /bin/vgchange
        fi
fi

as you can see, it only creates them, when it whas called as init and not as linuxrc. So if you use the kernel parameter rdinit=/init instead of the default rdinit=/linuxrc everything works just fine.

Now why that check is there at all, I have no idea ;)

Comment 5 Sebastian Pipping gentoo-dev

2011-01-11 14:45:04 UTC

I have applied this patch to the experimental branch:
http://git.overlays.gentoo.org/gitweb/?p=proj/genkernel.git;a=commitdiff;h=b4f310213ef80357880ba63a93b85922d7b07a44

The genkernel-99999 ebuild (fix nines) exposes that branch.
Please let me know how it works for you.

If I don't hear anything, I may close this bug in two weeks.