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From 138a7b2bc72a50ad7c590db3b638547dc2810e47 Mon Sep 17 00:00:00 2001
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From: Frantisek Sumsal <frantisek@sumsal.cz>
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Date: Wed, 22 Feb 2023 16:43:42 +0100
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Subject: [PATCH] test: add coverage for #24177
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Original issue: https://bugzilla.redhat.com/show_bug.cgi?id=1985288
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(cherry picked from commit 6299b6e5e6df32516fcaba9a93d966bad9043748)
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Related: #1985288
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---
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test/units/testsuite-64.sh | 38 +++++++++++++++++++++++++++++++++++++-
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1 file changed, 37 insertions(+), 1 deletion(-)
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diff --git a/test/units/testsuite-64.sh b/test/units/testsuite-64.sh
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index 4017f61f59..201a673d06 100755
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--- a/test/units/testsuite-64.sh
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+++ b/test/units/testsuite-64.sh
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@@ -417,7 +417,7 @@ testcase_lvm_basic() {
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lvm vgs
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lvm vgchange -ay "$vgroup"
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lvm lvcreate -y -L 4M "$vgroup" -n mypart1
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- lvm lvcreate -y -L 8M "$vgroup" -n mypart2
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+ lvm lvcreate -y -L 32M "$vgroup" -n mypart2
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lvm lvs
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udevadm wait --settle --timeout="$timeout" "/dev/$vgroup/mypart1" "/dev/$vgroup/mypart2"
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mkfs.ext4 -L mylvpart1 "/dev/$vgroup/mypart1"
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@@ -461,6 +461,42 @@ testcase_lvm_basic() {
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helper_check_device_symlinks "/dev/disk" "/dev/$vgroup"
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helper_check_device_units
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+ # Do not "unready" suspended encrypted devices w/o superblock info
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+ # See:
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+ # - https://github.com/systemd/systemd/pull/24177
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+ # - https://bugzilla.redhat.com/show_bug.cgi?id=1985288
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+ dd if=/dev/urandom of=/etc/lvm_keyfile bs=64 count=1 iflag=fullblock
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+ chmod 0600 /etc/lvm_keyfile
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+ # Intentionally use weaker cipher-related settings, since we don't care
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+ # about security here as it's a throwaway LUKS partition
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+ cryptsetup luksFormat -q --use-urandom --pbkdf pbkdf2 --pbkdf-force-iterations 1000 \
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+ "/dev/$vgroup/mypart2" /etc/lvm_keyfile
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+ # Mount the LUKS partition & create a filesystem on it
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+ mkdir -p /tmp/lvmluksmnt
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+ cryptsetup open --key-file=/etc/lvm_keyfile "/dev/$vgroup/mypart2" "lvmluksmap"
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+ udevadm wait --settle --timeout="$timeout" "/dev/mapper/lvmluksmap"
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+ mkfs.ext4 -L lvmluksfs "/dev/mapper/lvmluksmap"
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+ udevadm wait --settle --timeout="$timeout" "/dev/disk/by-label/lvmluksfs"
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+ # Make systemd "interested" in the mount by adding it to /etc/fstab
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+ echo "/dev/disk/by-label/lvmluksfs /tmp/lvmluksmnt ext4 defaults 0 2" >>/etc/fstab
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+ systemctl daemon-reload
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+ mount "/tmp/lvmluksmnt"
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+ mountpoint "/tmp/lvmluksmnt"
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+ # Temporarily suspend the LUKS device and trigger udev - basically what `cryptsetup resize`
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+ # does but in a more deterministic way suitable for a test/reproducer
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+ for _ in {0..5}; do
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+ dmsetup suspend "/dev/mapper/lvmluksmap"
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+ udevadm trigger -v --settle "/dev/mapper/lvmluksmap"
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+ dmsetup resume "/dev/mapper/lvmluksmap"
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+ # The mount should survive this sequence of events
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+ mountpoint "/tmp/lvmluksmnt"
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+ done
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+ # Cleanup
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+ umount "/tmp/lvmluksmnt"
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+ cryptsetup close "/dev/mapper/lvmluksmap"
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+ sed -i "/lvmluksfs/d" "/etc/fstab"
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+ systemctl daemon-reload
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+
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# Disable the VG and check symlinks...
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lvm vgchange -an "$vgroup"
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udevadm wait --settle --timeout="$timeout" --removed "/dev/$vgroup" "/dev/disk/by-label/mylvpart1"
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