诡异：

磁盘SN号居然一样：

# sdparm --quiet -p sn /dev/sda

Unit serial number VPD page:

      WD-WMAZA1508075

# sdparm --quiet -p sn /dev/sdc

Unit serial number VPD page:

      WD-WMAZA1508075

[root@135 ~]#  sdparm --quiet -p sn /dev/sda

Unit serial number VPD page:

 PDKRH0ARH4E3SN  

[root@135 ~]#  sdparm --quiet -p sn /dev/sdb

Unit serial number VPD page:

 PDKRH0ARH4E3SN


# mount /dev/sda1 /data/data027

mount: wrong fs type, bad option, bad superblock on /dev/sda1,

      missing codepage or other error

      In some cases useful info is found in syslog - try

      dmesg | tail  or so


# dmesg | tail

Filesystem "sda1": xfs_log_force: error 5 returned.

Filesystem "sda1": xfs_log_force: error 5 returned.

Filesystem "sdc1": xfs_log_force: error 5 returned.

XFS: Filesystem sda1 has duplicate UUID - can't mount

Filesystem "sdc1": xfs_log_force: error 5 returned.

XFS: Filesystem sda1 has duplicate UUID - can't mount

Filesystem "sdc1": xfs_log_force: error 5 returned.

Filesystem "sdc1": xfs_log_force: error 5 returned.

Filesystem "sdc1": xfs_log_force: error 5 returned.

Filesystem "sdc1": xfs_log_force: error 5 returned.


# tail -f /var/log/messages

Mar 19 01:15:56 tmp05 kernel: Filesystem "sda1": xfs_log_force: error 5 returned.

Mar 19 01:15:56 tmp05 kernel: Filesystem "sda1": xfs_log_force: error 5 returned.

Mar 19 01:15:56 tmp05 kernel: xfs_force_shutdown(sda1,0x1) called from line 420 of file fs/xfs/xfs_rw.c.  Return address = 0xffffffff884edcfd

Mar 19 01:15:56 tmp05 kernel: Filesystem "sda1": xfs_log_force: error 5 returned.

Mar 19 01:15:56 tmp05 last message repeated 4 times

Mar 19 01:16:23 tmp05 kernel: Filesystem "sdc1": xfs_log_force: error 5 returned.

Mar 19 01:16:30 tmp05 kernel: XFS: Filesystem sda1 has duplicate UUID - can't mount

Mar 19 01:16:53 tmp05 kernel: Filesystem "sdc1": xfs_log_force: error 5 returned.

Mar 19 01:17:09 tmp05 kernel: XFS: Filesystem sda1 has duplicate UUID - can't mount

Mar 19 01:17:23 tmp05 kernel: Filesystem "sdc1": xfs_log_force: error 5 returned.

Mar 19 01:17:53 tmp05 kernel: Filesystem "sdc1": xfs_log_force: error 5 returned.

Mar 19 01:18:09 tmp05 smartd[3403]: Device: /dev/sda, 12 Currently unreadable (pending) sectors

Mar 19 01:18:09 tmp05 smartd[3403]: Device: /dev/sda, 12 Offline uncorrectable sectors

Mar 19 01:18:09 tmp05 smartd[3403]: Device: /dev/sdb, 48 Currently unreadable (pending) sectors

Mar 19 01:18:09 tmp05 smartd[3403]: Device: /dev/sdb, 48 Offline uncorrectable sectors

Mar 19 01:18:09 tmp05 smartd[3403]: Device: /dev/sdc, 12 Currently unreadable (pending) sectors

Mar 19 01:18:09 tmp05 smartd[3403]: Device: /dev/sdc, 12 Offline uncorrectable sectors

Mar 19 01:18:23 tmp05 kernel: Filesystem "sdc1": xfs_log_force: error 5 returned.


处理办法：


[root@atyu30 ~]# blkid /dev/sdc1

/dev/sdc1: UUID="208a7154-baa3-4159-a6ad-ae16c0938171" TYPE="xfs"

[root@atyu30 ~]# blkid /dev/sda1

/dev/sda1: UUID="208a7154-baa3-4159-a6ad-ae16c0938171" TYPE="xfs"


2个磁盘的UUID居然也一样


修改磁盘UUID


uuidgen 会返回一个合法的 uuid，结合 xfs_admin -U 可以新生成一个 uuid 并写入 xfs 分区中：

比如新建或改变 sdc1 的 uuid （需要 root 权限）


[root@atyu30 ~]# uuidgen

8c922c24-7110-4ba8-9af7-d275ded029b9


[root@atyu30 ~]# xfs_admin -U 8c922c24-7110-4ba8-9af7-d275ded029b9 /dev/sdc1

Clearing log and setting UUID

writing all SBs

new UUID = 8c922c24-7110-4ba8-9af7-d275ded029b9