From: Mykola Golub <mgolub@suse.com>
Date: Mon, 27 Apr 2020 08:04:33 +0000 (+0100)
Subject: rbd-nbd: script that can be hooked to quiesce/unquiesce events
X-Git-Tag: v16.1.0~2324^2~4
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=6e7d4f963b80d63b52bc029784f8347ed6fe6142;p=ceph.git

rbd-nbd: script that can be hooked to quiesce/unquiesce events

Signed-off-by: Mykola Golub <mgolub@suse.com>
---

diff --git a/src/tools/rbd_nbd/rbd-nbd_quiesce b/src/tools/rbd_nbd/rbd-nbd_quiesce
new file mode 100755
index 00000000000..a62a12b15ae
--- /dev/null
+++ b/src/tools/rbd_nbd/rbd-nbd_quiesce
@@ -0,0 +1,31 @@
+#!/bin/sh
+
+echo "$0 $@" >&2
+
+if [ $# -lt 2 ]; then
+    echo "usage: $0 <dev> <cmd>" >&2
+    exit 1
+fi
+
+dev=$1
+cmd=$2
+
+export PATH=/usr/sbin:/usr/bin:/sbin:/bin
+
+findmnt -S "${dev}" -fno TARGET |
+while read mnt; do
+    case "${cmd}" in
+        quiesce)
+            echo "freezing ${mnt}" >&2
+            fsfreeze -f "${mnt}"
+            ;;
+        unquiesce)
+            echo "unfreezing ${mnt}" >&2
+            fsfreeze -u "${mnt}"
+            ;;
+        *)
+            echo "unknown command ${cmd}" >&2
+            exit 1
+            ;;
+    esac
+done