From dfe567b41f9cc7e78ad62aba6e19bc3848eb58ce Mon Sep 17 00:00:00 2001
From: Tim Foster <tim.foster@sun.com>
Date: Wed, 22 Oct 2008 00:23:37 +0100
Subject: [PATCH] 6762213 We should not snapshot swap or dump devices by
 default

---
 src/lib/svc/method/zfs-auto-snapshot | 31 ++++++++++++++++++++++++++--
 1 file changed, 29 insertions(+), 2 deletions(-)

diff --git a/src/lib/svc/method/zfs-auto-snapshot b/src/lib/svc/method/zfs-auto-snapshot
index 9b7a99c..fcfc13e 100644
--- a/src/lib/svc/method/zfs-auto-snapshot
+++ b/src/lib/svc/method/zfs-auto-snapshot
@@ -882,12 +882,39 @@ function auto_include {
 				*false | false*)
 					;;
 				*)
-					$PFZFS set com.sun:auto-snapshot=true $pool
-					;;
+					FIRSTRUN_POOLS="$pool $FIRSTRUN_POOLS"
+				;;
 				esac
 			fi
 		done	
 	fi
+	
+	for pool in ${FIRSTRUN_POOLS} ; do
+		# This is the first time the service has run on this pool,
+		# set appropriate zfs user properties on it
+		$PFZFS set com.sun:auto-snapshot=true $pool
+
+		# check for swap and dump devices and disable snapshots there
+		SWAP=$(swap -l | grep "/dev/zvol/dsk/$pool/" | awk '{print $1}')
+		for swap in $SWAP ; do
+			vol=$(echo $swap | sed -e 's#/dev/zvol/dsk/##')
+			echo "Disabling snapshots for swap device $vol"
+			$PFZFS set com.sun:auto-snapshot=false $vol
+		done
+
+		# can't run dumpadm as a non-root user, so check for dumpadm.conf
+		if [ -r /etc/dumpadm.conf ] ; then
+			DUMP=$(grep "^DUMPADM_DEVICE=" /etc/dumpadm.conf |\
+				grep "/dev/zvol/dsk/$pool/" |\
+				awk -F= '{print $2}')
+			if [ -n "$DUMP" ] ; then
+				vol=$(echo $DUMP | sed -e 's#/dev/zvol/dsk/##')
+				echo "Disabling snapshots for dump device $vol"
+				$PFZFS set com.sun:auto-snapshot=false $vol
+			fi
+		fi
+	done
+
 }