DRBD Unknown故障處理過程

配置drbd過程出現Primary/Unknown 故障，最後通過如下方式解決。

1， 節點狀态檢視

(1) 主節點狀态

[[email protected] drbd.d]# cat /proc/drbd    

version: 8.4.3 (api:1/proto:86-101)    

GIT-hash: 89a294209144b68adb3ee85a73221f964d3ee515 build by [email protected], 2013-11-29 12:28:00    

0: cs:StandAlone ro:Primary/Unknown ds:UpToDate/DUnknown   r-----    

    ns:0 nr:0 dw:0 dr:672 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:604    

[[email protected] drbd.d]#

(2) 從節點狀态

[[email protected] ~]# cat /proc/drbd    

version: 8.4.3 (api:1/proto:86-101)    

GIT-hash: 89a294209144b68adb3ee85a73221f964d3ee515 build by [email protected], 2013-11-29 12:28:00    

0: cs:StandAlone ro:Secondary/Unknown ds:UpToDate/DUnknown   r-----    

    ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:548    

[[email protected] ~]#

2. 這裡确認以主節點的資料為準，重新同步到從節點

(1) 停止app2 drbd服務

[[email protected] ~]# service drbd stop   

Stopping all DRBD resources: .    

[[email protected] ~]#

(2) 重新初始化中繼資料

[[email protected] ~]# drbdadm create-md data   

You want me to create a v08 style flexible-size internal meta data block.    

There appears to be a v08 flexible-size internal meta data block    

already in place on /dev/sdb1 at byte offset 5364318208    

Do you really want to overwrite the existing v08 meta-data?    

[need to type 'yes' to confirm] yes

Writing meta data...   

md_offset 5364318208    

al_offset 5364285440    

bm_offset 5364121600

Found ext3 filesystem   

     5238400 kB data area apparently used    

     5238400 kB left usable by current configuration

Even though it looks like this would place the new meta data into   

unused space, you still need to confirm, as this is only a guess.

Do you want to proceed?   

[need to type 'yes' to confirm] yes

initializing activity log   

NOT initializing bitmap    

lk_bdev_save(/var/lib/drbd/drbd-minor-0.lkbd) failed: No such file or directory    

New drbd meta data block successfully created.    

lk_bdev_save(/var/lib/drbd/drbd-minor-0.lkbd) failed: No such file or directory

(3) 啟動drbd服務

[[email protected] ~]# service drbd start   

Starting DRBD resources: [    

     create res: data    

   prepare disk: data    

    adjust disk: data    

     adjust net: data    

]    

..........    

***************************************************************    

DRBD's startup script waits for the peer node(s) to appear.    

- In case this node was already a degraded cluster before the    

   reboot the timeout is 0 seconds. [degr-wfc-timeout]    

- If the peer was available before the reboot the timeout will    

   expire after 0 seconds. [wfc-timeout]    

   (These values are for resource 'data'; 0 sec -> wait forever)    

To abort waiting enter 'yes' [  15]:se

.   

[[email protected] ~]# cat /proc/drbd    

version: 8.4.3 (api:1/proto:86-101)    

GIT-hash: 89a294209144b68adb3ee85a73221f964d3ee515 build by [email protected], 2013-11-29 12:28:00    

0: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate C r-----    

    ns:0 nr:5238400 dw:5238400 dr:0 al:0 bm:320 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:0    

[[email protected] ~]#

3. app1主節點下

(1) 主節點狀态正常了

[[email protected] ~]# cat /proc/drbd    

version: 8.4.3 (api:1/proto:86-101)    

GIT-hash: 89a294209144b68adb3ee85a73221f964d3ee515 build by [email protected], 2013-11-29 12:28:00    

0: cs:StandAlone ro:Primary/Unknown ds:UpToDate/DUnknown   r-----    

    ns:0 nr:0 dw:0 dr:672 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:604

(2) 重新開機drbd之後，資料重新同步到從節點

[[email protected] ~]# service drbd reload   

Reloading DRBD configuration: .    

[[email protected] ~]# cat /proc/drbd     

version: 8.4.3 (api:1/proto:86-101)    

GIT-hash: 89a294209144b68adb3ee85a73221f964d3ee515 build by [email protected], 2013-11-29 12:28:00    

0: cs:SyncSource ro:Primary/Secondary ds:UpToDate/Inconsistent C r---n-    

    ns:176816 nr:0 dw:0 dr:180896 al:0 bm:10 lo:4 pe:2 ua:8 ap:0 ep:1 wo:d oos:5063296    

        [>....................] sync'ed:  3.4% (4944/5112)M    

        finish: 0:00:57 speed: 87,552 (87,552) K/sec    

[[email protected] ~]# cat /proc/drbd     

version: 8.4.3 (api:1/proto:86-101)    

GIT-hash: 89a294209144b68adb3ee85a73221f964d3ee515 build by [email protected], 2013-11-29 12:28:00    

0: cs:SyncSource ro:Primary/Secondary ds:UpToDate/Inconsistent C r---n-    

    ns:3541004 nr:0 dw:0 dr:3545760 al:0 bm:215 lo:2 pe:4 ua:6 ap:0 ep:1 wo:d oos:1700480    

        [============>.......] sync'ed: 67.6% (1660/5112)M    

        finish: 0:00:23 speed: 71,780 (69,368) K/sec    

[[email protected] ~]# cat /proc/drbd     

version: 8.4.3 (api:1/proto:86-101)    

GIT-hash: 89a294209144b68adb3ee85a73221f964d3ee515 build by [email protected], 2013-11-29 12:28:00    

0: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r-----    

    ns:5238400 nr:0 dw:0 dr:5239072 al:0 bm:320 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:0    

[[email protected] ~]#