Drbd

Version actuelle en date du 9 septembre 2010 à 13:19

/etc/init.d/drbd start

[root@data01 ~]# cat /proc/drbd
version: 8.2.6 (api:88/proto:86-88)
GIT-hash: 3e69822d3bb4920a8c1bfdf7d647169eba7d2eb4 build by buildsvn@c5-x8664-build, 2008-10-03 11:30:17
0: cs:StandAlone st:Secondary/Unknown ds:Consistent/DUnknown   r---
   ns:0 nr:0 dw:0 dr:0 al:0 bm:65 lo:0 pe:0 ua:0 ap:0 oos:483328

[root@data01 ~]# drbdadm connect SERVICE

[root@data01 ~]# cat /proc/drbd
version: 8.2.6 (api:88/proto:86-88)
GIT-hash: 3e69822d3bb4920a8c1bfdf7d647169eba7d2eb4 build by buildsvn@c5-x8664-build, 2008-10-03 11:30:17
0: cs:StandAlone st:Secondary/Unknown ds:Consistent/DUnknown   r---
   ns:0 nr:0 dw:0 dr:0 al:0 bm:65 lo:0 pe:0 ua:0 ap:0 oos:483328

data02-P ~ #drbdadm create-md SERVICE
Valid meta data seems to be in place.
Do you really want to overwrite?     
[need to type 'yes' to confirm] yes  
Writing meta data...
initialising activity log
NOT initialized bitmap   
New drbd meta data block sucessfully created.

data02-P ~ # drbdadm attach SERVICE

data02-P ~ # /etc/init.d/drbd start 
Starting DRBD resources:    [ d(SERVICE) s(SERVICE) n(SERVICE) ].
..........                                                       
***************************************************************  
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 10 seconds. [degr-wfc-timeout]          
- If the peer was available before the reboot the timeout will  
  expire after 20 seconds. [wfc-timeout]                        
  (These values are for resource 'SERVICE'; 0 sec -> wait forever)
To abort waiting enter 'yes' [  20]:    

data01-P ~ # drbdadm connect SERVICE

data02-P ~ # drbdsetup /dev/drbd0 syncer -r 90M

data02-P ~ # dstat 1

data02-P ~ # watch cat /proc/drbd

Les machines sont en primaire / primaire pour permettre de lire/écrire des 2 cotés. Autrement les data du secondaire ne sont pas accessibles.

RECOVERY

[root@data01 ~]# /etc/init.d/drbd start
Starting DRBD resources: [ 
SERVICE
Found valid meta data in the expected location, 375809634304 bytes into /dev/HEBEX/DRBD.
d(SERVICE) s(SERVICE) n(SERVICE) ]outdated-wfc-timeout has to be shorter than degr-wfc-timeout
outdated-wfc-timeout implicitly set to degr-wfc-timeout (10s)
.
[root@data01 ~]# cat /proc/drbd 
version: 8.3.8.1 (api:88/proto:86-94)
GIT-hash: 0d8589fcc32c874df57c930ca1691399b55ec893 build by root@data01.pooll.s1.p.fti.net, 2010-08-24 16:38:53
0: cs:StandAlone ro:Secondary/Unknown ds:Consistent/DUnknown   r----
   ns:0 nr:0 dw:0 dr:0 al:0 bm:2 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b oos:61440
[root@data01 ~]# drbdadm -- --discard-my-data connect SERVICE

[root@data02 ~]# drbdadm connect SERVICE

[root@data01 ~]# drbdadm -- --discard-my-data connect SERVICE
[root@data01 ~]# cat /proc/drbd 
version: 8.3.8.1 (api:88/proto:86-94)
GIT-hash: 0d8589fcc32c874df57c930ca1691399b55ec893 build by root@data01.pooll.s1.p.fti.net, 2010-08-24 16:38:53
0: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate C r----
   ns:0 nr:332264 dw:332264 dr:0 al:0 bm:27 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b
oos:0
[root@data01 ~]# drbdadm primary all
[root@data01 ~]# cat /proc/drbd 
version: 8.3.8.1 (api:88/proto:86-94)
GIT-hash: 0d8589fcc32c874df57c930ca1691399b55ec893 build by root@data01.pooll.s1.p.fti.net, 2010-08-24 16:38:53
0: cs:Connected ro:Primary/Primary ds:UpToDate/UpToDate C r----
   ns:0 nr:332264 dw:332264 dr:0 al:0 bm:27 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b
oos:0
[root@data01 ~]# /etc/init.d/cluster 
start stop status manuel_start manuel_stop
[root@data01 ~]# /etc/init.d/cluster start
CREATE  /var/run/lfs2
DRBD IS UP
STATUS DRBD :UpToDate/UpToDate
DONT START ANYTHING WHILE VOLUME IS NOT MOUNTED
PREPARING GFS2
Starting cluster: 
  Loading modules... done
  Mounting configfs... done
  Starting ccsd... done
  Starting cman... done
  Starting daemons... done
  Starting fencing... done
                                                          [  OK  ]
/dev/drbd0 /mnt/DRBD gfs2 rw,noatime,hostdata=jid=0:id=65537:first=0 0 0
/dev/drbd0 /mnt/DRBD gfs2 rw,noatime,hostdata=jid=0:id=65537:first=0 0 0 
Starting portmap:                                          [  OK  ]
Starting NFS statd:                                        [  OK  ]
Starting RPC idmapd:                                       [  OK  ]
Starting NFS services:                                     [  OK  ]
Starting NFS daemon:                                       [  OK  ]
Starting NFS mountd:                                       [  OK  ]
Starting High-Availability services: 
2010/09/09_15:17:53 INFO:  Resource is stopped
                                                          [  OK  ] 
LETS GO 
[root@data01 ~]#