ppc initrd problem?

[Thomas Graichen]

ok - track it down a bit better:

* it looks like the initrd filesystem gets trashed somehow
* i was able to add a /bin/ash.static to it and boot into
  it using "init=/bin/ash.static" - there some files were
  ok but others resulted in ext2 errors - also the whole
  /sbin dir was trashed which results in the mysterious
  init shared lib problems i saw)
* the image used is ok (tried it via loopback mount and via
  ramdisk in a normal boot with the same kernel - both are
  ok - but then used for booting i get the corruption)
* with certain images (for instance the same with all the
  32768 replaced by 28672 in the creation process) the
  kernel completely hangs after the "found compressed ram-
  disk ..." line

does anyone have an idea here?

anybody else used big initrd's on the ppc?

again - a lot of thanks in advance

t

Thomas Graichen <news-innominate.list.linux.ppc.dev at innominate.de> wrote:

> is there any known problem with initrd's on the ppc?

> i am currently trying to get a small initrd based standalone system
> working on the ppc like i did for the i386

>   http://innominate.org/~graichen/projects/miniroot/

> to make the playing around with the xfs filesystem a bit more
> comfortable but it does not really boot on the ppc (new world
> mac, 2.4.1 kernel, SuSE 7.0/ppc) ...

> the symptoms are:

> * it starts booting fine
> * it finds and uncomresses the initrd into the ramdisk fine too
> * it mounts it as root fine too
> * it starts init
> * init tries to run the rc shell script and this results in bash
>   failing to load it's shared libs (it fails on libreadline which
>   is the first): it says something about incorrect ELF header -
>   but the files in the initrd are ok and all should be there (the
>   libs, ld.so and i even ran ldconfig on it)

> i have no real idea what happens here - as said - the same thing
> works fine in the i386 case ... ok some more details:

> * yaboot.conf

>   image = vmlinux-2.4.1-XFS
>       label = miniroot
>       append = "ramdisk_size=40000 load_ramdisk=1"
>       initrd = miniroot.gz
>       root = /dev/ram

> * the initrd is created with:

>   mkdir -p /tmp/miniroot-mnt
>   dd if=/dev/zero of=/tmp/miniroot bs=1024k count=32
>   mke2fs -N 32768 /tmp/miniroot
>   mount -o loop /tmp/miniroot /tmp/miniroot-mnt
>   cd /tmp/miniroot-mnt
>   tar cSlf - `cat /root/miniroot/files.70` | tar xSpf -
>   tar xSpzf /root/miniroot/miniroot-add.tgz
>   ldconfig -r /tmp/miniroot-mnt
>   cd ..
>   umount /tmp/miniroot-mnt
>   cat /tmp/miniroot | gzip -9 > /root/miniroot.gz
>   rmdir /tmp/miniroot-mnt
>   rm -i /tmp/miniroot

> * the filelist is (excluding stuff not mattering here, all files are
> from SuSE 7.0/ppc):

> /lib/ld-2.1.3.so
> /lib/ld.so.1 (-> /lib/ld-2.1.3.so)
> /lib/libc.so.6
> /lib/libpam.so.0.72
> /lib/libpam_misc.so.0.72
> /lib/libdl.so.2
> /lib/libcrypt.so.1
> /lib/librt.so.1
> /lib/libresolv.so.2
> /lib/libutil.so.1
> /lib/libpthread.so.0
> /lib/security/*
> /lib/libnsl.so.1
> /lib/libnss_files.so.1
> /lib/libnss_files.so.2
> /lib/libreadline.so.4.1
> /lib/libhistory.so.4.1
> /lib/libncurses.so.5.0
> /bin/bash
> /bin/sh (-> /bin/bash)
> /sbin/init
> /etc/fstab
> /etc/inittab
> /etc/passwd
> /etc/group
> /etc/rc
> /etc/issue
> /etc/shadow
> /etc/gshadow
> /etc/securetty
> /etc/pwdb.conf
> /etc/nsswitch.conf
> /etc/termcap
> ...

> plus all an "ldconfig -r /destdir" creates on a destdir mounted
> system ... chrooting into the mounted system works fine and all
> the shared libs kann be resolved fine with the chrooted system
> and i can run all the bins in it - but on bootup it does not
> work

> any idea?

> a lot of thanks in advance

> t

> --
> thomas.graichen at innominate.com
>                                                          innominate AG
>                                                   the linux architects
> tel: +49-30-308806-13   fax: -77             http://www.innominate.com



--
thomas.graichen at innominate.com
                                                         innominate AG
                                                  the linux architects
tel: +49-30-308806-13   fax: -77             http://www.innominate.com

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