背景
因为此次规划的裸设备与之前裸设备重名，/etc/fstab中加载的还是旧的逻辑卷信息，导致mount挂载目录不成功。
问题处理
操作系统版本
[root@guizhou_hp-pop-10-150-57-13 ~]# cat /etc/redhat-release
CentOS Linux release 7.5.1804 (Core)
挂载/data目录，前台不报错，目录也未挂载
[root]# mount /dev/datavg/datavg-lv /data
[root]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sdm1 50G 14G 37G 27% /
devtmpfs 94G 0 94G 0% /dev
tmpfs 94G 0 94G 0% /dev/shm
tmpfs 94G 75M 94G 1% /run
tmpfs 94G 0 94G 0% /sys/fs/cgroup
/dev/sdm2 397G 220M 397G 1% /var
tmpfs 19G 0 19G 0% /run/user/0
查看messages日志
[root]# tail -200 /var/log/messages
Dec 23 18:42:30 nm05-monitor-10e5e65e16 kernel: XFS (dm-0): Mounting V5 Filesystem
Dec 23 18:42:30 nm05-monitor-10e5e65e16 kernel: XFS (dm-0): Mounting V5 Filesystem
Dec 23 18:42:30 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' resumed (module 'builtin:omfwd') [v8.24.0-34.el7 try http://www.rsyslog.com/e/2359 ]
Dec 23 18:42:30 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' resumed (module 'builtin:omfwd') [v8.24.0-34.el7 try http://www.rsyslog.com/e/2359 ]
Dec 23 18:42:30 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' resumed (module 'builtin:omfwd') [v8.24.0-34.el7 try http://www.rsyslog.com/e/2359 ]
Dec 23 18:42:30 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' resumed (module 'builtin:omfwd') [v8.24.0-34.el7 try http://www.rsyslog.com/e/2359 ]
Dec 23 18:42:30 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' resumed (module 'builtin:omfwd') [v8.24.0-34.el7 try http://www.rsyslog.com/e/2359 ]
Dec 23 18:42:30 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' resumed (module 'builtin:omfwd') [v8.24.0-34.el7 try http://www.rsyslog.com/e/2359 ]
Dec 23 18:42:30 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' resumed (module 'builtin:omfwd') [v8.24.0-34.el7 try http://www.rsyslog.com/e/2359 ]
Dec 23 18:42:30 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' resumed (module 'builtin:omfwd') [v8.24.0-34.el7 try http://www.rsyslog.com/e/2359 ]
Dec 23 18:42:30 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' resumed (module 'builtin:omfwd') [v8.24.0-34.el7 try http://www.rsyslog.com/e/2359 ]
Dec 23 18:42:30 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' resumed (module 'builtin:omfwd') [v8.24.0-34.el7 try http://www.rsyslog.com/e/2359 ]
Dec 23 18:42:30 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' suspended, next retry is Thu Dec 23 18:43:00 2021 [v8.24.0-34.el7 try http://www.rsyslog.com/e/2007 ]
Dec 23 18:42:30 nm05-monitor-10e5e65e16 kernel: XFS (dm-0): Ending clean mount
Dec 23 18:42:30 nm05-monitor-10e5e65e16 kernel: XFS (dm-0): Ending clean mount
Dec 23 18:42:30 nm05-monitor-10e5e65e16 systemd: Unit data.mount is bound to inactive unit dev-datavg-lv\x2ddata.device. Stopping, too.
Dec 23 18:42:30 nm05-monitor-10e5e65e16 systemd: Unmounting /data...
Dec 23 18:42:30 nm05-monitor-10e5e65e16 kernel: XFS (dm-0): Unmounting Filesystem
Dec 23 18:42:30 nm05-monitor-10e5e65e16 kernel: XFS (dm-0): Unmounting Filesystem
Dec 23 18:42:30 nm05-monitor-10e5e65e16 systemd: Unmounted /data.
查看/etc/fstab，存在一条旧的挂载信息，将此自动挂载信息删除，然后重新加载systemctl
[root]# cat /etc/fstab
/dev/datavg/datavg-lv /data xfs defaults 0 0
重新加载systemctl
[root]# systemctl damon-reload
重新挂载/data目录，目录已成功挂载
[root@nm05-monitor-10e5e65e16 /]# mount /dev/datavg/datavg-lv /data
[root@nm05-monitor-10e5e65e16 /]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sdm1 50G 14G 37G 27% /
devtmpfs 94G 0 94G 0% /dev
tmpfs 94G 0 94G 0% /dev/shm
tmpfs 94G 75M 94G 1% /run
tmpfs 94G 0 94G 0% /sys/fs/cgroup
/dev/sdm2 397G 220M 397G 1% /var
tmpfs 19G 0 19G 0% /run/user/0
/dev/mapper/datavg-datavg--lv 6.3T 33M 6.3T 1% /data
查看messages日志，无异常信息
[root]# tail -200 /var/log/messages
Dec 23 18:43:39 nm05-monitor-10e5e65e16 systemd: Reloading.
Dec 23 18:43:39 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' resumed (module 'builtin:omfwd') [v8.24.0-34.el7 try http://www.rsyslog.com/e/2359 ]
Dec 23 18:43:39 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' resumed (module 'builtin:omfwd') [v8.24.0-34.el7 try http://www.rsyslog.com/e/2359 ]
Dec 23 18:43:39 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' resumed (module 'builtin:omfwd') [v8.24.0-34.el7 try http://www.rsyslog.com/e/2359 ]
Dec 23 18:43:39 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' resumed (module 'builtin:omfwd') [v8.24.0-34.el7 try http://www.rsyslog.com/e/2359 ]
Dec 23 18:43:39 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' resumed (module 'builtin:omfwd') [v8.24.0-34.el7 try http://www.rsyslog.com/e/2359 ]
Dec 23 18:43:39 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' resumed (module 'builtin:omfwd') [v8.24.0-34.el7 try http://www.rsyslog.com/e/2359 ]
Dec 23 18:43:39 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' resumed (module 'builtin:omfwd') [v8.24.0-34.el7 try http://www.rsyslog.com/e/2359 ]
Dec 23 18:43:39 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' resumed (module 'builtin:omfwd') [v8.24.0-34.el7 try http://www.rsyslog.com/e/2359 ]
Dec 23 18:43:39 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' resumed (module 'builtin:omfwd') [v8.24.0-34.el7 try http://www.rsyslog.com/e/2359 ]
Dec 23 18:43:39 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' resumed (module 'builtin:omfwd') [v8.24.0-34.el7 try http://www.rsyslog.com/e/2359 ]
Dec 23 18:43:39 nm05-monitor-10e5e65e16 rsyslogd: action 'action 8' suspended, next retry is Thu Dec 23 18:44:09 2021 [v8.24.0-34.el7 try http://www.rsyslog.com/e/2007 ]
Dec 23 18:43:57 nm05-monitor-10e5e65e16 kernel: XFS (dm-0): Mounting V5 Filesystem
Dec 23 18:43:57 nm05-monitor-10e5e65e16 kernel: XFS (dm-0): Mounting V5 Filesystem
Dec 23 18:43:57 nm05-monitor-10e5e65e16 kernel: XFS (dm-0): Ending clean mount
Dec 23 18:43:57 nm05-monitor-10e5e65e16 kernel: XFS (dm-0): Ending clean mount