将 /srv/apache-tomcat/logs 日志目录挂载到 /www/logs 子卷

			
[root@iZ62sreab5qZ ~]#  btrfs subvolume snapshot /www /www/logs
Create a snapshot of '/www' in '/www/logs'

UUID=6b2d5cbf-0b0f-42df-b697-7280671ea847 /srv/apache-tomcat/logs btrfs defaults,subvol=logs 1 1

			
			

挂载多个子卷

			
[root@iZ62sreab5qZ ~]#  btrfs subvolume snapshot /www /www/logs
Create a snapshot of '/www' in '/www/logs'
[root@iZ62sreab5qZ ~]#  btrfs subvolume snapshot /www /www/logs/admin
Create a snapshot of '/www' in '/www/logs/admin'
[root@iZ62sreab5qZ ~]#  btrfs subvolume snapshot /www /www/logs/m
Create a snapshot of '/www' in '/www/logs/m'
[root@iZ62sreab5qZ ~]#  btrfs subvolume snapshot /www /www/logs/www
Create a snapshot of '/www' in '/www/logs/www'
			
			

			
UUID=9936c1b9-44ea-46b7-ae7c-2486c4859116 /srv/apache-tomcat-www/logs btrfs defaults,subvol=logs/www 1 1
UUID=9936c1b9-44ea-46b7-ae7c-2486c4859116 /srv/apache-tomcat-admin/logs btrfs defaults,subvol=logs/admin 1 1
UUID=9936c1b9-44ea-46b7-ae7c-2486c4859116 /srv/apache-tomcat-m/logs btrfs defaults,subvol=logs/m 1 1