概述
由于机房异常停电，导致服务器启动后系统分区异常。无法识别之前挂载的磁盘分区，并且无法使用fdisk命令重置分区。
[root@db2 ~]# cat /etc/fstab
/dev/mapper/data10p1 /data ext4 defaults 0 0
[root@db2 ~]# ll /dev/mapper/data10
lrwxrwxrwx 1 root root 8 9月 6 17:37 /dev/mapper/data10 -> ../dm-16
[root@db2 ~]# fdisk /dev/mapper/data10
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 22: 无效的参数.
The kernel still uses the old table. The new table will be used at
the next reboot or after you run partprobe(8) or kpartx(8)
Syncing disks.处理办法
使用partprobe命令重读分区表
[root@db2 ~]# partprobe /dev/mapper/data10
[root@db2 ~]# ll /dev/mapper/data10*
lrwxrwxrwx 1 root root 8 9月 6 17:37 /dev/mapper/data10 -> ../dm-16
lrwxrwxrwx 1 root root 8 10月 29 15:39 /dev/mapper/data10p1 -> ../dm-17文章来源于互联网:服务器重启后Re-reading the partition table failed with error 22
