BackupPc不备份挂载的LVM快照？
问题描述：
我重置我的BackupPc并运行到一个问题：BackupPc不备份挂载的LVM快照？
我想在所有主机上备份“/ backup”。我从一台主机开始测试。
过程：
- backuppc的呼吁客户shell脚本
- 该脚本生成一些快照和安装到/备份/ ...
- 现在的BackupPC应该备份
- 在至少BackupPC调用另一个Shell脚本，卸载和删除快照
/备份获取“备份”，但只是文件夹，而不是他们的内容。
我增强了第一shell脚本，以确保文件夹有内容，这里的输出：
2017-06-04 20:11:14 Created directory /data/backuppc/pc/v3.lipperts-web.de/refCnt
2017-06-04 20:11:15 Output from DumpPreUserCmd: Reducing COW size 5,00 GiB down to maximum usable size 256,00 MiB.
2017-06-04 20:11:15 Output from DumpPreUserCmd: Logical volume "snaptshot-zabbix" created
2017-06-04 20:11:15 Output from DumpPreUserCmd: Reducing COW size 5,00 GiB down to maximum usable size 256,00 MiB.
2017-06-04 20:11:15 Output from DumpPreUserCmd: Logical volume "snaptshot-filebeat" created
2017-06-04 20:11:15 Output from DumpPreUserCmd: Reducing COW size 5,00 GiB down to maximum usable size 1,01 GiB.
2017-06-04 20:11:15 Output from DumpPreUserCmd: Logical volume "snaptshot-teamspeak" created
2017-06-04 20:11:16 Output from DumpPreUserCmd: Logical volume "snaptshot-schnoddi" created
2017-06-04 20:11:16 Output from DumpPreUserCmd: Logical volume "snaptshot-sentry" created
2017-06-04 20:11:16 Output from DumpPreUserCmd: Reducing COW size 5,00 GiB down to maximum usable size 256,00 MiB.
2017-06-04 20:11:16 Output from DumpPreUserCmd: Logical volume "snaptshot-nginx" created
2017-06-04 20:11:16 Output from DumpPreUserCmd: insgesamt 13
2017-06-04 20:11:16 Output from DumpPreUserCmd: -rw-r--r-- 1 root root 329 Jun 3 17:43 docker-compose.yml
2017-06-04 20:11:16 Output from DumpPreUserCmd: drwx------ 2 root root 12288 Jun 3 17:43 lost+found
2017-06-04 20:11:16 full backup started for directory /backup
2017-06-04 20:11:17 Output from DumpPostUserCmd: Logical volume "snaptshot-zabbix" successfully removed
2017-06-04 20:11:17 Output from DumpPostUserCmd: Logical volume "snaptshot-filebeat" successfully removed
2017-06-04 20:11:17 Output from DumpPostUserCmd: Logical volume "snaptshot-teamspeak" successfully removed
2017-06-04 20:11:17 Output from DumpPostUserCmd: Logical volume "snaptshot-schnoddi" successfully removed
2017-06-04 20:11:17 Output from DumpPostUserCmd: Logical volume "snaptshot-sentry" successfully removed
2017-06-04 20:11:18 Output from DumpPostUserCmd: Logical volume "snaptshot-nginx" successfully removed
2017-06-04 20:11:18 Got fatal error during xfer (No files dumped for share /backup)
2017-06-04 20:11:23 Backup aborted (No files dumped for share /backup)
你可以本身没有列出“泊坞窗，compose.yml”的文件，但备份是空的
https://i.imgur.com/u6hfIh3.png
可以在这里是什么问题？