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From 52d09b57a499ed7b3757e0e2954c2783198d5b23 Mon Sep 17 00:00:00 2001
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From: Damien Ciabrini <damien.ciabrini@gmail.com>
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Date: Mon, 9 Nov 2020 20:42:19 +0100
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Subject: [PATCH] podman: recover from podman's storage being out of sync
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If a system crash while podman is stopping a container (e.g. a fencing action
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took place), it might happen that on reboot, podman is not able to recreate
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a container as requested by the resource agent.
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When such a start operation fails, it might be because the internal storage
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layer still references an old container with the same name, even though podman
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itself thinks there is no such container. If so, purge the storage layer to try
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to clean the corruption and try recreating the container.
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---
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heartbeat/podman | 29 +++++++++++++++++++++++++++--
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1 file changed, 27 insertions(+), 2 deletions(-)
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diff --git a/heartbeat/podman b/heartbeat/podman
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index 81b00ee6f..d4d608ca3 100755
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--- a/heartbeat/podman
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+++ b/heartbeat/podman
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@@ -345,6 +345,32 @@ create_transient_drop_in_dependency()
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}
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+run_new_container()
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+{
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+ local opts=$1
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+ local image=$2
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+ local cmd=$3
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+ local rc
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+
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+ ocf_log info "running container $CONTAINER for the first time"
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+ ocf_run podman run $opts $image $cmd
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+ rc=$?
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+ if [ $rc -eq 125 ]; then
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+ # If an internal podman error occurred, it might be because
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+ # the internal storage layer still references an old container
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+ # with the same name, even though podman itself thinks there
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+ # is no such container. If so, purge the storage layer to try
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+ # to clean the corruption and try again.
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+ ocf_log warn "Internal podman error while creating new container $CONTAINER. Retrying."
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+ ocf_run podman rm --storage $CONTAINER
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+ ocf_run podman run $opts $image $cmd
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+ rc=$?
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+ fi
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+
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+ return $rc
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+}
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+
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+
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podman_start()
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{
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local cid
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@@ -378,8 +404,7 @@ podman_start()
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# make sure any previous container matching our container name is cleaned up first.
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# we already know at this point it wouldn't be running
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remove_container
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- ocf_log info "running container $CONTAINER for the first time"
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- ocf_run podman run $run_opts $OCF_RESKEY_image $OCF_RESKEY_run_cmd
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+ run_new_container "$run_opts" $OCF_RESKEY_image "$OCF_RESKEY_run_cmd"
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fi
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rc=$?
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