I believe the key to the reproducer is having the kdump-tools package
installed in the chroot. The kdump-tools package provides a
/etc/kernel/postinst.d/kdump-tools script, which has the following
snippet:
(Apologies for formatting, the interface removes the leading spaces from
this code)
43 if test "${MODULES-most}" = most; then
44 # Switch from "most" to "dep" to reduce the size of the initramfs.
45 # "netboot" and "list" are expected to be already small enough.
46 KDUMP_MODULES=dep
47 fi
48
49 # We need a modified copy of initramfs-tools directory
50 # with MODULES=dep in initramfs.conf
51 if [ ! -d "$kdumpdir" ];then
52 mkdir -p "$kdumpdir"
53 fi
54 # Force re-creation of $kdumpdir/initramfs-tools
55 # in case the source has changed since last time
56 # we ran
57 if [ -d "$kdumpdir/initramfs-tools" ];then
58 rm -Rf $kdumpdir/initramfs-tools
59 fi
60 cp -pr /etc/initramfs-tools "$kdumpdir"
61
62 initramfsdir="$kdumpdir/initramfs-tools"
63
64 if test -n "${KDUMP_MODULES-}" -a "${KDUMP_MODULES-}" != "${MODULES}"; then
65 mkdir -p "$initramfsdir/conf.d"
66 echo "MODULES=${KDUMP_MODULES}" > "$initramfsdir/conf.d/zzz-kdump"
67 fi
This changes the initramfs-tools default from "MODULES=most" to
"MODULES=dep" before generating the initrd. "MODULES=dep" fails in a
chroot because there's no way to map '/' back to the block device that
it resides on.
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https://bugs.launchpad.net/bugs/2043059
Title:
Installation errors out when installing in a chroot
Status in linux-nvidia package in Ubuntu:
New
Bug description:
Processing triggers for linux-image-5.15.0-1040-nvidia (5.15.0-1040.40) ...
/etc/kernel/postinst.d/dkms:
* dkms: running auto installation service for kernel 5.15.0-1040-nvidia
...done.
/etc/kernel/postinst.d/initramfs-tools:
update-initramfs: Generating /boot/initrd.img-5.15.0-1040-nvidia
cryptsetup: WARNING: Couldn't determine root device
W: Couldn't identify type of root file system for fsck hook
cp: cannot stat '/etc/iscsi/initiatorname.iscsi': No such file or directory
/etc/kernel/postinst.d/kdump-tools:
kdump-tools: Generating /var/lib/kdump/initrd.img-5.15.0-1040-nvidia
mkinitramfs: failed to determine device for /
mkinitramfs: workaround is MODULES=most, check:
grep -r MODULES /var/lib/kdump/initramfs-tools
Error please report bug on initramfs-tools
Include the output of 'mount' and 'cat /proc/mounts'
update-initramfs: failed for /var/lib/kdump/initrd.img-5.15.0-1040-nvidia
with 1.
run-parts: /etc/kernel/postinst.d/kdump-tools exited with return code 1
dpkg: error processing package linux-image-5.15.0-1040-nvidia (--configure):
installed linux-image-5.15.0-1040-nvidia package post-installation script
subprocess returned error exit status 1
Errors were encountered while processing:
linux-image-5.15.0-1040-nvidia
E: Sub-process /usr/bin/dpkg returned an error code (1)
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