ORA-15038: disk '/dev/xxxxxx' mismatch on 'Time Stamp'

alter diskgroup DATADG mount;
如错信息如下：
ORA-15038: disk ‘/dev/mapper/mpathe’ mismatch on ‘Time Stamp’ with target disk group [2431192341] [2229818407]
我们可以看到/dev/mapper/mpathe，/dev/mapper/mpathal都是DATADG中的DISK号为2的盘，这里是这台数据库主机上挂了新旧两套存储，有两套DATADG的盘导致。而multipath软件的配置，又没有把旧的或错误的存储进行屏蔽。

[grid@node2 ~]$ kfed read  /dev/mapper/mpathe |egrep "kfbh.type|obj|crestmp|dskname|grpname"
kfbh.type:                            1 ; 0x002: KFBTYP_DISKHEAD
kfbh.block.obj:              2147483650 ; 0x008: disk=2<<<
kfdhdb.dskname:             DATADG_0002 ; 0x028: length=11<<<
kfdhdb.grpname:                  DATADG ; 0x048: length=6<<<
kfdhdb.crestmp.hi:             33050245 ; 0x0a8: HOUR=0x5  DAYS=0x14 MNTH=0x3 YEAR=0x7e1<<<
kfdhdb.crestmp.lo:           1116950528 ; 0x0ac: USEC=0x0 MSEC=0xd4 SECS=0x29 MINS=0x10<<<

[grid@node2 ~]$ kfed read  /dev/mapper/mpathal |egrep "kfbh.type|obj|crestmp|dskname|grpname"
kfbh.type:                            1 ; 0x002: KFBTYP_DISKHEAD
kfbh.block.obj:              2147483650 ; 0x008: disk=2<<<
kfdhdb.dskname:             DATADG_0002 ; 0x028: length=11<<<
kfdhdb.grpname:                  DATADG ; 0x048: length=6<<<
kfdhdb.crestmp.hi:             33099408 ; 0x0a8: HOUR=0x10 
 DAYS=0x14 MNTH=0x3 YEAR=0x7e4 <<<
kfdhdb.crestmp.lo:           3514799104 ; 0x0ac: USEC=0x0 MSEC=0x3e5 SECS=0x17 MINS=0x34<<<

解决方法
1、把旧存储断开
2、从multipath,or udev中屏蔽掉这些错旧盘