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From 79fb4b2d3d862f4e83b1df72107b6322b420ea34 Mon Sep 17 00:00:00 2001
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From: Reid Wahl <nrwahl@protonmail.com>
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Date: Sat, 28 Nov 2020 18:10:03 -0800
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Subject: [PATCH] LVM-activate: Stop before blk-availability.service
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If storage services (e.g., iscsi-shutdown.service) stop before an
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LVM-activate resource stops, the managed VG may become unavailable. Then
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the LVM-activate resource may fail to deactivate the volume group and
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thus fail its stop operation.
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This commit adds a systemd drop-in "After=blk-availability.service"
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directive for resource-agents-deps.target during the LVM-activate start
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op. blk-availability includes "After=" directives for other storage
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services and thus serves as a convenient wrapper.
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blk-availability is not enabled by default, and a "Wants=" drop-in
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that's created after Pacemaker starts would not be able to start
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blk-availability automatically. So here we also start blk-availability
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during LVM_start().
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Resolves RHBZ#1902208
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Signed-off-by: Reid Wahl <nrwahl@protonmail.com>
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---
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heartbeat/LVM-activate | 22 ++++++++++++++++++++++
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1 file changed, 22 insertions(+)
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diff --git a/heartbeat/LVM-activate b/heartbeat/LVM-activate
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index 94f9e5813..b8abd7579 100755
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--- a/heartbeat/LVM-activate
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+++ b/heartbeat/LVM-activate
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@@ -830,6 +830,28 @@ lvm_start() {
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local rc
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local vol
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+ if systemd_is_running ; then
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+ # Create drop-in to deactivate VG before stopping
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+ # storage services during shutdown/reboot.
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+ after=$(systemctl show resource-agents-deps.target.d \
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+ --property=After | cut -d'=' -f2)
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+
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+ case "$after" in
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+ *" blk-availability.service "*)
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+ ;;
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+ *)
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+ systemd_drop_in "99-LVM-activate" "After" \
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+ "blk-availability.service"
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+ ;;
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+ esac
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+
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+ # If blk-availability isn't started, the "After="
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+ # directive has no effect.
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+ if ! systemctl is-active blk-availability.service ; then
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+ systemctl start blk-availability.service
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+ fi
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+ fi
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+
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if lvm_status ; then
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ocf_log info "${vol}: is already active."
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return $OCF_SUCCESS
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