tags 538118 + patch thanks Hi
Running update-grub as part of the maintainer scripts also breaks
installing grub2/ grub-pc inside a chroot (without having a full /dev/
bind-mounted into the chroot, which is often not wanted). This particular
behaviour seems to be a regression introduced in grub2 1.96+20090808-1, as
merely installing grub2 into a chroot (procfs and devpts mounted, but not
/dev/ itself) did work for me with grub2 1.96+20090725-1.
The attached patch, taken from udev's chroot detection (#395889) reliably
omits calling update-grub inside a chroot. I suggest applying this patch to
the maintainer scripts (and not update-grub itself), as there are reasons
(rescue system, etc.) to execute update-grub inside a chrooted system
manually (with a full /dev/ (bind-)mounted).
Regards
Stefan Lippers-Hollmann
# cdebootstrap --arch=amd64 --flavour=minimal sid /mnt/
http://ftp.at.debian.org/debian/
P: Retrieving Release
[...]
P: Writing resolv.conf
# chroot /mnt/ /bin/bash
# mount -t proc -onodev,noexec,nosuid proc-chroot /proc
# mount -t devpts devpts-chroot /dev/pts/
# LANG=C
# export LANG
# apt-get update
[...]
# apt-get install apt-utils dialog whiptail debconf
[...]
Get:1 http://ftp.at.debian.org sid/main apt-utils 0.7.22.2 [194kB]
Get:2 http://ftp.at.debian.org sid/main libncursesw5 5.7+20090803-1 [379kB]
Get:3 http://ftp.at.debian.org sid/main libnewt0.52 0.52.10-4 [67.8kB]
Get:4 http://ftp.at.debian.org sid/main libpopt0 1.14-4 [46.4kB]
Get:5 http://ftp.at.debian.org sid/main whiptail 0.52.10-4 [38.9kB]
Get:6 http://ftp.at.debian.org sid/main libgpm2 1.20.4-3.2 [35.0kB]
Get:7 http://ftp.at.debian.org sid/main dialog 1.1-20080819-1 [282kB]
Get:8 http://ftp.at.debian.org sid/main libfribidi0 0.10.9-1 [44.8kB]
[...]
# DEBIAN_FRONTEND=noninteractive DEBIAN_PRIORITY=critical
DEBCONF_NOWARNINGS=yes apt-get install grub2
[...]
Get:1 http://ftp.at.debian.org sid/main ucf 3.0018 [64.3kB]
Get:2 http://ftp.at.debian.org sid/main libfreetype6 2.3.9-5 [408kB]
Get:3 http://ftp.at.debian.org sid/main grub-common 1.96+20090808-1 [1212kB]
Get:4 http://ftp.at.debian.org sid/main grub-pc 1.96+20090808-1 [669kB]
Get:5 http://ftp.at.debian.org sid/main grub2 1.96+20090808-1 [184kB]
Fetched 2538kB in 8s (304kB/s)
Preconfiguring packages ...
Selecting previously deselected package ucf.
(Reading database ... 6193 files and directories currently installed.)
Unpacking ucf (from .../archives/ucf_3.0018_all.deb) ...
Moving old data out of the way
Selecting previously deselected package libfreetype6.
Unpacking libfreetype6 (from .../libfreetype6_2.3.9-5_amd64.deb) ...
Selecting previously deselected package grub-common.
Unpacking grub-common (from .../grub-common_1.96+20090808-1_amd64.deb) ...
Selecting previously deselected package grub-pc.
Unpacking grub-pc (from .../grub-pc_1.96+20090808-1_amd64.deb) ...
Selecting previously deselected package grub2.
Unpacking grub2 (from .../grub2_1.96+20090808-1_amd64.deb) ...
Setting up ucf (3.0018) ...
Setting up libfreetype6 (2.3.9-5) ...
Setting up grub-common (1.96+20090808-1) ...
Setting up grub-pc (1.96+20090808-1) ...
Creating config file /etc/default/grub with new version
grep: /etc/kernel-img.conf: No such file or directory
grub-probe: error: cannot find a device for /.
dpkg: error processing grub-pc (--configure):
subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of grub2:
grub2 depends on grub-pc; however:
Package grub-pc is not configured yet.
dpkg: error processing grub2 (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
grub-pc
grub2
E: Sub-process /usr/bin/dpkg returned an error code (1)
# sed -i s/^\#\!\\/.*/\&x/ /var/lib/dpkg/info/grub-pc.postinst
# apt-get install -f
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
After this operation, 0B of additional disk space will be used.
Setting up grub-pc (1.96+20090808-1) ...
+ case "$1" in
+ . /usr/share/debconf/confmodule
++ '[' '!' '' ']'
++ PERL_DL_NONLAZY=1
++ export PERL_DL_NONLAZY
++ '[' '' ']'
++ exec /usr/share/debconf/frontend /var/lib/dpkg/info/grub-pc.postinst
configure ''
+ case "$1" in
+ . /usr/share/debconf/confmodule
++ '[' '!' 1 ']'
++ '[' -z '' ']'
++ exec
++ '[' '' ']'
++ exec
++ DEBCONF_REDIR=1
++ export DEBCONF_REDIR
+ ucf --three-way --debconf-ok /usr/share/grub/default/grub /etc/default/grub
+ ucfr grub-pc /etc/default/grub
+ grep -q '[= ]/sbin/update-grub' /etc/kernel-img.conf
grep: /etc/kernel-img.conf: No such file or directory
+ mkdir -p /boot/grub
+ test -e /boot/grub/device.map
+ test -e /boot/grub/core.img
+ grub-mkdevicemap --no-floppy
+ db_get grub-pc/linux_cmdline
+ _db_cmd 'GET grub-pc/linux_cmdline'
+ IFS=' '
+ printf '%s\n' 'GET grub-pc/linux_cmdline'
+ IFS='
'
+ read -r _db_internal_line
+ RET=fillme
+ case ${_db_internal_line%%[ ]*} in
+ return 0
+ '[' fillme '!=' fillme ']'
+ test -e /boot/grub/stage2
++ grub-mkdevicemap -m -
++ sed -e '/^(fd[0-9]\+)/d;s,.*\t,,g'
++ tr '\n' ,
++ sed -e 's/,$//g;s/,/, /g'
+ db_subst grub-pc/install_devices CHOICES
+ _db_cmd 'SUBST grub-pc/install_devices' CHOICES
+ IFS=' '
+ printf '%s\n' 'SUBST grub-pc/install_devices CHOICES'
+ IFS='
'
+ read -r _db_internal_line
+ RET=0
+ case ${_db_internal_line%%[ ]*} in
+ return 0
+ db_input high grub-pc/install_devices
+ _db_cmd 'INPUT high' grub-pc/install_devices
+ IFS=' '
+ printf '%s\n' 'INPUT high grub-pc/install_devices'
+ IFS='
'
+ read -r _db_internal_line
+ RET='30 question skipped'
+ case ${_db_internal_line%%[ ]*} in
+ return 30
+ true
+ db_go
+ _db_cmd 'GO '
+ IFS=' '
+ printf '%s\n' 'GO '
+ IFS='
'
+ read -r _db_internal_line
+ RET=ok
+ case ${_db_internal_line%%[ ]*} in
+ return 0
+ db_get grub-pc/install_devices
+ _db_cmd 'GET grub-pc/install_devices'
+ IFS=' '
+ printf '%s\n' 'GET grub-pc/install_devices'
+ IFS='
'
+ read -r _db_internal_line
+ RET=
+ case ${_db_internal_line%%[ ]*} in
+ return 0
++ echo
++ sed -e 's/,/ /g'
+ touch /boot/grub/grub.cfg
+ for i in /usr/share/grub/ascii.pf2
/usr/share/images/desktop-base/moreblue-orbit-grub.png
+ test -e /usr/share/grub/ascii.pf2
+ cp /usr/share/grub/ascii.pf2 /boot/grub/
+ for i in /usr/share/grub/ascii.pf2
/usr/share/images/desktop-base/moreblue-orbit-grub.png
+ test -e /usr/share/images/desktop-base/moreblue-orbit-grub.png
+ test -e /boot/grub/grub.cfg
+ update-grub
grub-probe: error: cannot find a device for /.
dpkg: error processing grub-pc (--configure):
subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of grub2:
grub2 depends on grub-pc; however:
Package grub-pc is not configured yet.
dpkg: error processing grub2 (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
grub-pc
grub2
E: Sub-process /usr/bin/dpkg returned an error code (1)
diff -u grub2-1.96+20090808/debian/grub-pc.postinst grub2-1.96+20090808/debian/grub-pc.postinst
--- grub2-1.96+20090808/debian/grub-pc.postinst
+++ grub2-1.96+20090808/debian/grub-pc.postinst
@@ -64,8 +64,8 @@
fi
done
- # If grub.cfg has been generated, update it.
- if test -e /boot/grub/grub.cfg ; then
+ # If grub.cfg has been generated and if we are not in a chrooted environment (the devicenumber/inode pair of / is the same as that of /sbin/init's root), update it.
+ if test -e /boot/grub/grub.cfg && [ "$(stat -c %d/%i /)" = "$(stat -Lc %d/%i /proc/1/root 2>/dev/null)" ] ; then
update-grub
fi
;;
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