Redhat GFS Configuration
Part Two
1. 啟動Cluster服務并檢查狀態
[root@test1 scrīpt]# service cman start
Starting cluster:
Loading modules... done
Mounting configfs... done
Starting ccsd... done
Starting cman... done
Starting daemons... done
Starting fencing... done
[ OK ]
[root@test2 ~]# service cman start
Starting cluster:
Loading modules... done
Mounting configfs... done
Starting ccsd... done
Starting cman... done
Starting daemons... done
Starting fencing... done
[ OK ]
[root@test1 scrīpt]# service rgmanager start
Starting Cluster Service Manager: [ OK ]
[root@test2 scrīpt]# service rgmanager start
Starting Cluster Service Manager: [ OK ]
[root@test2 ~]# clustat
Member Status: Quorate
Member Name ID Status
------ ---- ---- ------
test1 1 Online, rgmanager
test2 2 Online, Local, rgmanager
Service Name Owner (Last) State
------- ---- ----- ------ -----
service:gfs test1 started
2. [root@test1 scrīpt]# sh gnbd_import.sh
gnbd_import: created gnbd device lvol2
gnbd_recvd: gnbd_recvd started
Device name : lvol1
----------------------
Minor # : 0
sysfs name : /block/gnbd0
Server : 10.148.54.122
Port : 14567
State : Close Connected Clear
Readonly : No
Sectors : 20971520
Device name : lvol2
----------------------
Minor # : 1
sysfs name : /block/gnbd1
Server : 10.148.54.122
Port : 14567
State : Close Connected Clear
Readonly : No
Sectors : 20971520
.
[root@test1 scrīpt]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/cciss/c0d0p1 964028280 3821168 910447384 1% /
tmpfs 481212 0 0 481212 0% /dev/shm
/dev/gnbd/lvol1 10222816 20 10222796 1% /sky
/dev/gnbd/lvol2 10222816 20 10222796 1% /sky1
[root@test2 scrīpt]# sh gnbd_import.sh
[root@test2 scrīpt]# df
3. 動態增加LV空間并擴展GFS文件系統
[root@test1 scrīpt]# lvscan
ACTIVE '/dev/vg01/lvol1' [10.00 GB] inherit
ACTIVE '/dev/vg01/lvol2' [10.00 GB] inherit
[root@test1 scrīpt]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/cciss/c0d0p1 964028280 3821180 910447372 1% /
tmpfs 481212 0 481212 0% /dev/shm
/dev/gnbd/lvol1 10222816 20 10222796 1% /sky
/dev/gnbd/lvol2 10222816 20 10222796 1% /sky1
[root@test1 scrīpt]# lvextend -L +10G /dev/vg01/lvol1
Extending logical volume lvol1 to 20.00 GB
Logical volume lvol1 successfully resized
[root@test1 scrīpt]# lvscan
ACTIVE '/dev/vg01/lvol1' [20.00 GB] inherit
ACTIVE '/dev/vg01/lvol2' [10.00 GB] inherit
[root@test1 scrīpt]# gfs_grow /dev/gnbd/lvol1 /sky
FS: Mount Point: /sky
FS: Device: /dev/gnbd/lvol1
FS: Options: rw,hostdata=jid=0:id=196609:first=1
FS: Size: 2621439
DEV: Size: 5242880
Preparing to write new FS information...
Done.
Device has grown by less than 100 blocks.... skipping
[root@test1 scrīpt]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/cciss/c0d0p1 964028280 3821208 910447344 1% /
tmpfs 481212 0 481212 0% /dev/shm
/dev/gnbd/lvol1 20707920 28 20707892 1% /sky
/dev/gnbd/lvol2 10222816 20 10222796 1% /sky1
4. 維護注意事項:
1> 重啟系統時候注意:
卸載Mount點 à 停GFS服務 à 停Cluster服務 à reboot 。
2> 若GFS Hang﹐停掉Cluster服務后﹐直接去重啟主機開關﹐否則可能無法正常啟動。
5. GFS常用維護命令 gfs﹐詳細用法請參考man :
#gfs_mkfs -h
#gfs_grow -h
#gfs_tool -h
#gfs_quota –h
#gfs_debug –h
6. LVM常用命令man lvm﹐詳細用法請參考man
7. 查看Cluster信息:
#cat /var/log/messages
#group_tool dump gfs
原文：http://www.linuxdiyf.com/blog/?110920/action_viewspace_itemid_2900.html
