物理上换完盘，fdisk -l可以看到新盘，mkfs.xfs格式化后，可以用blkid看到硬盘uuid，将uuid更新至/etc/fstab文件中。去掉前面的注释。mount -a挂载却挂载不上。
后查看messages日志，报错信息如下：
Dec 10 23:08:39 localhost kernel: XFS (sdb): Mounting V5 Filesystem
Dec 10 23:08:39 localhost kernel: XFS (sdb): Ending clean mount
Dec 10 23:08:39 localhost systemd: Unit cslc-hdd002.mount is bound to inactive unit dev-disk-by\x2duuid-4028ce01\x2d2a83\x2d487b\x2d89ee\x2d983ea101cd76.device. Stopping, too.
Dec 10 23:08:39 localhost systemd: Unmounting /cslc/hdd002...
Dec 10 23:08:39 localhost root: [euid=root]:root pts/3 2022-12-10 17:41 (4.9.1.100):[/root] 2022-12-10 23:08:39 mount -a
Dec 10 23:08:39 localhost kernel: XFS (sdb): Unmounting Filesystem
Dec 10 23:08:39 localhost systemd: Unmounted /cslc/hdd002.
上网一查，得知是换盘之前没有umount之前的故障盘导致的，挂载点和之前的硬盘还存在绑定关系，所以新盘挂不上，解决方法：
systemctl daemon-reload
重新mount -a就ok啦！！！
