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From 2aa8015bc4ff0bd61eca13eceb59aaa672335b76 Mon Sep 17 00:00:00 2001
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From: Reid Wahl <nwahl@redhat.com>
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Date: Thu, 30 Aug 2018 18:36:11 -0700
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Subject: [PATCH] Filesystem: Support symlink as mountpoint directory
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Filesystem monitor operation fails when the `directory` attribute is a
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symlink.
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The monitor operation calls the `list_mounts` function, which cats
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`/proc/mounts` if it exists, else cats `/etc/mtab` if it exists, else
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runs the `mount` command. It then greps for `" $MOUNTPOINT "` in the
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output, where `$MOUNTPOINT` is the value of the `directory` attribute.
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`/proc/mounts`, `/etc/mtab`, and the `mount` command resolve symlinks
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to their canonical targets. So while the monitor operation greps for
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the symlink path (surrounded by spaces) as defined in the directory
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attribute, the symlink will not be present in the `list_mounts` output.
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Only the symlink's target will be present.
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This patch uses `readlink -f $MOUNTPOINT` to resolve the symlink to its
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canonical name before using it as a grep pattern in the
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`Filesystem_status` function.
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---
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heartbeat/Filesystem | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/heartbeat/Filesystem b/heartbeat/Filesystem
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index 7c73b0b97..fc4b8fcd5 100755
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--- a/heartbeat/Filesystem
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+++ b/heartbeat/Filesystem
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@@ -580,7 +580,7 @@ Filesystem_stop()
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#
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Filesystem_status()
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{
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- if list_mounts | grep -q " $MOUNTPOINT " >/dev/null 2>&1; then
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+ if list_mounts | grep -q " $(readlink -f $MOUNTPOINT) " >/dev/null 2>&1; then
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rc=$OCF_SUCCESS
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msg="$MOUNTPOINT is mounted (running)"
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else
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