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622b9de536
Deciding whether or not to add the diversion based on the version
alone fails quite hard in case pve-kernel-helper is in dpkg-state 'rc'
(removed not purged) as reported in our community forum[0]:
* removing pve-kernel-helper removes the diversion of grub-install
* if config-files are still present the preinst script gets called
with the version of the config-files (the version that got removed)
* if the version was newer than 6.4-1~ then no diversion is added
* unpacking fails, because grub-install would be overwritten leaving
pve-kernel-helper in state 'ic'
Explicitly checking whether the diversion is in place sounds like a
robust approach here.
downside: documentation on dpkg-divert in maintainer scripts [1] uses
the version approach.
[0] https://forum.proxmox.com/threads/pve-kernel-helper-wont-install.90029/
[1] https://www.debian.org/doc/debian-policy/ap-pkg-diversions.html
Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
(cherry picked from commit 3a982230c1)
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
20 lines
401 B
Bash
20 lines
401 B
Bash
#! /bin/sh
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set -e
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case "$1" in
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install|upgrade)
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if ! dpkg -S /usr/sbin/grub-install|grep -q 'diversion by pve-kernel-helper'; then
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dpkg-divert --package pve-kernel-helper --add --rename \
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--divert /usr/sbin/grub-install.real /usr/sbin/grub-install
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fi
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;;
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*)
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echo "ignoring unknown preinst command '$1'"
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;;
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esac
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#DEBHELPER#
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exit 0
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