DRBD脑裂解决方法

1.查看主服务器

[root@master ~]# /etc/init.d/drbd status
drbd driver loaded OK; device status:
version: 8.4. (api:/proto:-)
GIT-hash: 599f286440bd633d15d5ff985204aff4bccffadd build by root@master.luodi.com, -- ::
m:res      cs          ro               ds                 p       mounted  fstype
:example  StandAlone  Primary/Unknown  UpToDate/DUnknown  r-----
[root@master ~]# 

2.查看备服务器

[root@slave ~]# /etc/init.d/drbd status
drbd driver loaded OK; device status:
version: 8.4. (api:/proto:-)
GIT-hash: 599f286440bd633d15d5ff985204aff4bccffadd build by root@master.luodi.com, -- ::
m:res      cs          ro                 ds                 p       mounted  fstype
:example  StandAlone  Secondary/Unknown  UpToDate/DUnknown  r-----
[root@slave ~]# 

解决方法：

在备服务器操作：其中example是资源名

[root@slave ~]# drbdadm secondary example
[root@slave ~]# drbdadm --discard-my-data connect example

在主服务器操作

[root@master ~]# drbdadm connect example
[root@master ~]# cat /proc/drbd
version: 8.4. (api:/proto:-)
GIT-hash: 599f286440bd633d15d5ff985204aff4bccffadd build by root@master.luodi.com, -- ::

 : cs:SyncSource ro:Primary/Secondary ds:UpToDate/Inconsistent C r-----
    ns: nr: dw: dr: al: bm: lo: pe: ua: ap: ep: wo:d oos:
    [>....................] sync'ed:  4.7% (257728/264412)K
    finish: :: speed: , (,) K/sec

备机上查看：DRBD恢复正常

[root@slave ~]# /etc/init.d/drbd status
drbd driver loaded OK; device status:
version: 8.4. (api:/proto:-)
GIT-hash: 599f286440bd633d15d5ff985204aff4bccffadd build by root@master.luodi.com, -- ::
m:res      cs         ro                 ds                 p  mounted  fstype
:example  Connected  Secondary/Primary  UpToDate/UpToDate  C
[root@slave ~]#