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resource-agents/SOURCES/RHEL-34777-Filesystem-fail-...

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From 66a5308d2e8f61093716a076f4386416dc18045c Mon Sep 17 00:00:00 2001
From: Oyvind Albrigtsen <oalbrigt@redhat.com>
Date: Mon, 22 Apr 2024 11:26:09 +0200
Subject: [PATCH] Filesystem: fail when incorrect device mounted on mountpoint,
and dont unmount the mountpoint in this case, or if mountpoint set to "/"
---
heartbeat/Filesystem | 71 ++++++++++++++++++++++++++++++++++++--------
1 file changed, 58 insertions(+), 13 deletions(-)
diff --git a/heartbeat/Filesystem b/heartbeat/Filesystem
index e1378f781..cec71f1a6 100755
--- a/heartbeat/Filesystem
+++ b/heartbeat/Filesystem
@@ -582,10 +582,16 @@ Filesystem_start()
fi
# See if the device is already mounted.
- if Filesystem_status >/dev/null 2>&1 ; then
- ocf_log info "Filesystem $MOUNTPOINT is already mounted."
- return $OCF_SUCCESS
- fi
+ Filesystem_status
+ case "$?" in
+ $OCF_SUCCESS)
+ ocf_log info "Filesystem $MOUNTPOINT is already mounted."
+ return $OCF_SUCCESS
+ ;;
+ $OCF_ERR_CONFIGURED)
+ return $OCF_ERR_CONFIGURED
+ ;;
+ esac
fstype_supported || exit $OCF_ERR_INSTALLED
@@ -801,10 +807,42 @@ Filesystem_stop()
#
Filesystem_status()
{
- match_string="${TAB}${CANONICALIZED_MOUNTPOINT}${TAB}"
- if list_mounts | grep "$match_string" >/dev/null 2>&1; then
- rc=$OCF_SUCCESS
- msg="$MOUNTPOINT is mounted (running)"
+ local match_string="${TAB}${CANONICALIZED_MOUNTPOINT}${TAB}"
+ local mounted_device=$(list_mounts | grep "$match_string" | awk '{print $1}')
+
+ if [ -n "$mounted_device" ]; then
+ if [ "X$blockdevice" = "Xyes" ]; then
+ if [ -e "$DEVICE" ] ; then
+ local canonicalized_device="$(readlink -f "$DEVICE")"
+ if [ $? -ne 0 ]; then
+ ocf_exit_reason "Could not canonicalize $DEVICE because readlink failed"
+ exit $OCF_ERR_GENERIC
+ fi
+ else
+ local canonicalized_device="$DEVICE"
+ fi
+ if [ -e "$mounted_device" ] ; then
+ local canonicalized_mounted_device="$(readlink -f "$mounted_device")"
+ if [ $? -ne 0 ]; then
+ ocf_exit_reason "Could not canonicalize $mounted_device because readlink failed"
+ exit $OCF_ERR_GENERIC
+ fi
+ else
+ local canonicalized_mounted_device="$mounted_device"
+ fi
+ if [ "$canonicalized_device" != "$canonicalized_mounted_device" ]; then
+ if ocf_is_probe || [ "$__OCF_ACTION" = "stop" ]; then
+ ocf_log debug "Another device ($mounted_device) is already mounted on $MOUNTPOINT"
+ rc=$OCF_NOT_RUNNING
+ else
+ ocf_exit_reason "Another device ($mounted_device) is already mounted on $MOUNTPOINT"
+ rc=$OCF_ERR_CONFIGURED
+ fi
+ fi
+ else
+ rc=$OCF_SUCCESS
+ msg="$MOUNTPOINT is mounted (running)"
+ fi
else
rc=$OCF_NOT_RUNNING
msg="$MOUNTPOINT is unmounted (stopped)"
@@ -1041,9 +1079,18 @@ else
else
CANONICALIZED_MOUNTPOINT="$MOUNTPOINT"
fi
- # At this stage, $MOUNTPOINT does not contain trailing "/" unless it is "/"
- # TODO: / mounted via Filesystem sounds dangerous. On stop, we'll
- # kill the whole system. Is that a good idea?
+
+ if echo "$CANONICALIZED_MOUNTPOINT" | grep -q "^\s*/\s*$"; then
+ if ocf_is_probe; then
+ ocf_log debug "/ cannot be managed in a cluster"
+ exit $OCF_NOT_RUNNING
+ elif [ "$__OCF_ACTION" = "start" ] || [ "$__OCF_ACTION" = "monitor" ] || [ "$__OCF_ACTION" = "status" ]; then
+ ocf_exit_reason "/ cannot be managed in a cluster"
+ exit $OCF_ERR_CONFIGURED
+ elif [ "$__OCF_ACTION" = "stop" ]; then
+ exit $OCF_SUCCESS
+ fi
+ fi
fi
# Check to make sure the utilites are found
@@ -1124,5 +1171,3 @@ case $OP in
;;
esac
exit $?
-
-