8fe8943179
(sub) package that contains all the fixups relative to a (sub) package. This has the advantage to limit the number of scripts but more importantly it will ease the sharing of the spec file between TW and SLE. We should also be able to compare the fixlets of two distros even if the spec files have diverged. Note that all the fixups are run just once now. OBS-URL: https://build.opensuse.org/package/show/Base:System/systemd?expand=0&rev=1386
147 lines
3.9 KiB
Bash
147 lines
3.9 KiB
Bash
#! /bin/bash
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#
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# This script contains all the fixups run when systemd-container package is
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# installed or updated.
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#
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warn() {
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echo >&2 "warning: $@"
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}
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is_btrfs_subvolume() {
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# On btrfs subvolumes always have the inode 256
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test $(stat --format=%i "$1") -eq 256
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}
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# This assumes the directory/subvol is emptied by the caller.
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rm_subvolume_or_directory() {
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is_btrfs_subvolume "$1" && {
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btrfs subvolume delete "$1"
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return
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}
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rmdir "$1"
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}
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# On systems using BTRFS, convert /var/lib/machines into a subvolume suitable
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# for snapper to perform snapshots, rollbacks.. in case it was not properly set
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# up, see bsc#992573. The installer has been fixed to properly initialize it at
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# installation time.
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#
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# The conversion might only be problematic for openSUSE distros (TW/Factory)
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# where the subvolume was created at the wrong place (via tmpfiles for example)
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# and it got populated before we had time to fix it. In this case we'll let the
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# user fix it manually.
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#
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# On SLE12 this subvolume was only introduced during the upgrade from v210 to
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# v228 (ie SLE12-SP[01] -> SLE12-SP2+ when we added this workaround hence no
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# user should had time to populate it. Note that the subvolume is still created
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# at the wrong place due to the call to tmpfiles_create macro in the %post
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# section however it's empty so again we shouldn't face any issue to convert it.
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#
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# In order to avoid ugly dependencies added in systemd package, this function
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# should only be called during package updates when mksubvolume(8) is
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# available. During installation, /var/lib/machines is supposed to be created by
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# the installer now.
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#
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# See bsc#992573
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#
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fix_machines_subvol() {
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local tagfile=/var/lib/systemd/rpm/container-machines_subvol
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if [ -e $tagfile ]; then
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return 0
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fi
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touch $tagfile
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#
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# If there's already an entry in fstab for /var/lib/machines, it
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# means that:
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#
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# - the installer initialized /var/lib/machines correctly (default)
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# - we already fixed it
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# - the sysadmin added it manually
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#
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# In any cases we should return.
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#
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# Note: we can't simply check if /var/lib/machines has been mounted
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# because an update through a chroot might be in progress (see
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# bsc#1030290).
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#
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if mount --fake /var/lib/machines 2>/dev/null; then
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return
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fi
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#
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# If there is already an entry in fstab for /var, it means that:
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#
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# - the system has a seperate /var subvolume (default from Feb 2018)
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# - the system has a seperate /var partition
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#
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# In any case we should return.
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#
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if mount --fake /var 2>/dev/null; then
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return
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fi
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#
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# If something is already mounted don't try to fix anything, it's been
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# done manually by the sysadmin.
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#
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if mountpoint -q /var/lib/machines; then
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return
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fi
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#
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# Let's try to figure out if the current filesystem uses a Snapper
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# BTRFS specific layout. Note that TW uses a different layout than
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# SLE...
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#
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# FIXME: not sure if it's correct, reliable or optimal.
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#
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case $(findmnt -nr -t btrfs -o FSROOT / 2>/dev/null) in
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*.snapshots/*/snapshot*)
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;;
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*)
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return 0
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esac
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if test -d /var/lib/machines; then
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#
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# Ok, we're on a system supporting rollbacks and
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# /var/lib/machines is not a subvolume remotely mounted so it
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# cannot be suitable for systems supporting rollback. Fix it.
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#
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echo "Making /var/lib/machines suitable for rollbacks..."
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type mksubvolume >/dev/null 2>&1 || {
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warn "mksubvolume(8) is not installed, aborting."
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return 1
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}
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test "$(ls -A /var/lib/machines/)" && {
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warn "/var/lib/machines is not empty, aborting."
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return 1
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}
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echo "Deleting empty /var/lib/machines directory/subvolume"
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rm_subvolume_or_directory /var/lib/machines || {
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warn "fail to delete /var/lib/machines"
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return 1
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}
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fi
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# At this point /var/lib/machines shouldn't exist.
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echo "Creating /var/lib/machines subvolume suitable for rollbacks."
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mksubvolume /var/lib/machines
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}
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r=0
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if [ $1 -gt 1 ]; then
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# During upgrade
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fix_machines_subvol || {
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warn "Please fix /var/lib/machines manually."
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r=1
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}
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fi
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exit $r
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