synchronization

File/Shell/cgroup.sh

@@ -0,0 +1,37 @@
+set -e   
+# 这句是告诉bash如何有任何语句执行结果不为ture，就应该退出。 
+
+if grep -v '^#' /etc/fstab | grep -q cgroup; then
+	echo 'cgroups mounted from fstab, not mounting /sys/fs/cgroup'
+	exit 0
+fi
+
+# kernel provides cgroups?
+if [ ! -e /proc/cgroups ]; then
+	exit 0
+fi
+
+# 确保目录存在
+if [ ! -d /sys/fs/cgroup ]; then
+	exit 0
+fi
+
+# mount /sys/fs/cgroup if not already done
+if ! mountpoint -q /sys/fs/cgroup; then
+	mount -t tmpfs -o uid=0,gid=0,mode=0755 cgroup /sys/fs/cgroup
+fi
+
+cd /sys/fs/cgroup
+
+# get/mount list of enabled cgroup controllers
+for sys in $(awk '!/^#/ { if ($4 == 1) print $1 }' /proc/cgroups); do
+	mkdir -p $sys
+	if ! mountpoint -q $sys; then
+		if ! mount -n -t cgroup -o $sys cgroup $sys; then
+			rmdir $sys || true
+		fi
+	fi
+done
+
+
+exit 0