Actually, a quick test with ldd seems to work fine. I will post a
patch with get_dso_deps rewritten to use it.
On Feb 11, 2009, at 10:16 AM, Victor Lowther
<victor.lowther@xxxxxxxxx> wrote:
On Feb 11, 2009, at 6:39 AM, Thiago Galesi <thiagogalesi@xxxxxxxxx>
wrote:
I've been trying to run dracut in other distributions (both
generating
and booting with the generated initrd) and there are several problems
to be tackled (most of them I don't have a clue how to solve them
properly).for testing purposes I've been using of non portable fixes
(hence no patches - yet - until there's a way to solve them
properly )
This is very preliminary still, more problems will come, for sure.
Here's a rundown of the problems I found
in dracut
- Some distros use switch_root, others pivot_root (and this has to be
copied from somewhere when generating, unless dracut comes with its
own set of tools)
Making switch_root a part of util-linux is in the works.
I guess the best solution would be to import a switch_root.c to
dracut
and bundle that (like it was suggested somewhere else)
- Tools that are copied from the fs, like $exe, $debugexe, the
problem
there is libraries... Ok, some distros offer
/usr/lib/klibc/bin/sh.shared, a bash that doesn't depend on any
libraries, but running bash per se (and other things like ls) in the
emergency console was not possible for the time being
When we copy tools, we try to get the libraries they require as they
are copied.
Maybe consider busybox for the initrd
Not by default. As an optional thing, sure.
Also, if you remove $exe from the for, you end up with /bin as a
file,
not as a directory (oh well...)
The patches I have posted to the list take care of this.
- udev rules are located in /etc/udev/rules.d/
Maybe detect its location and copy everything / copy files from
dracut.conf ?? (more of that later)
- udevd won't run without libs! F10 example
ldd $(which udevd)
linux-vdso.so.1 => (0x00007fff3bbff000)
libselinux.so.1 => /lib64/libselinux.so.1 (0x0000003b68600000)
libc.so.6 => /lib64/libc.so.6 (0x0000003b67600000)
libdl.so.2 => /lib64/libdl.so.2 (0x0000003b67e00000)
/lib64/ld-linux-x86-64.so.2 (0x0000003b67200000)
Oh well...
ldd is a little greedy when it grabs libs. We use a feature of ld-
Linux.so to grab only required libs.
In init
- no /dev/console is created
At least in my tests I had to create it by hand
- udev won't run without libs /o\
- The tiny shell I used (sh.shared) barfed on "label=${l//\//\\x2f}"
where it checks LABEL= for root
Also, without udev, I had to create /dev/hda1 by hand
Something is wrong with the way dracut is grabbing libs on your
system. Probably a lack of eu-readelf.
The second patch series I posted posixifies all the scripts
installed into the initrd.
Some tiny mounts don't like mount --bind /dev $NEWROOT/dev, we'll
probably have to go with the full-blown mount
This was mostly based on Ubunty Hardy, some things work the same on
MDV2008 (I checked) but those are the distributions I have access
right now (as well as F8 and F10)
--
-
Thiago Galesi
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