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I am quite puzzled by the structure of the resulting initrd image. If I have
understood what is happening (and I must admit I am struggling) the following
steps occur
1) the kernel calls linuxrc to run
2) linuxrc saves the contents of real-root-dev in its own initrd image
3) linuxrc then changes the real-root-dev to its own initrd image
4) linuxrc exits which causes the kernel to start /sbin/init in the initrd
image
5) /sbin/init then loads modules runs scripts etc
6) /sbin/init recovers the saved original real-root-dev and pivot_roots to it.
My question is, why go to great trouble to store and then change
real-root-dev. Why can't all of the meat of the action just happen in
linuxrc and then pivot_root to the original root?
Alan Chandler
- -- Forwarded Message --
Subject: Bug#164498: mkinitrd doesn't seem to create the correct initrd image
Date: Sun, 13 Oct 2002 10:44:12 +1000
From: Herbert Xu [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Herbert Xu [EMAIL PROTECTED] wrote:
On Sat, Oct 12, 2002 at 11:31:34PM +0100, Alan Chandler wrote:
Just after partition check on the two IDE drives I have
kjournald starting. Commit interval 5 seconds
EXT3-fs: mounted file system with ordered data mode
warning: can't open /etc/mtab: No such file or directory
pivot_root: No such file or directory
Hmm, does your system have a /initrd directory?
This patch should fix it.
- --
Debian GNU/Linux 3.0 is out! ( http://www.debian.org/ )
Email: Herbert Xu ~{PmVHI~} [EMAIL PROTECTED]
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
- --
Index: init
===
RCS file: /home/gondolin/herbert/src/CVS/debian/initrd-tools/init,v
retrieving revision 1.9
diff -u -r1.9 init
- --- init 11 Oct 2002 10:12:24 - 1.9
+++ init13 Oct 2002 00:35:09 -
@@ -18,16 +18,16 @@
done
if [ -n $fstype ]; then
mount -nrt $fstype ${flags:+-o $flags} /dev2/root /mnt
- - else
- - IFS=,
- - set -f
- - set +f -- $FSTYPES
- - unset IFS
- - for i; do
- - mount -nrt $i ${flags:+-o $flags} /dev2/root /
- - break
- - done
+ return
fi
+ IFS=,
+ set -f
+ set +f -- $FSTYPES
+ unset IFS
+ for i; do
+ mount -nrt $i ${flags:+-o $flags} /dev2/root /mnt
+ break
+ done
}
call() {
- ---
- --
Alan Chandler
[EMAIL PROTECTED]
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