herbetfy
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Shared Storage Clustering on Centos/RHEL 5 w/ HA
dear expert...
i have 2 server with 2x40GB diskdrive on each server (1 disk system and other for shared storage), i want to make shared storage cluster with HA using centos/RHEL cluster software.
can you give me step by step for creating shared storage cluster ?
when the storage capacity is full ,its posible to add more server to the cluster to increase capacity ?
i have 2 server with 2x40GB diskdrive on each server (1 disk system and other for shared storage), i want to make shared storage cluster with HA using centos/RHEL cluster software.
can you give me step by step for creating shared storage cluster ?
when the storage capacity is full ,its posible to add more server to the cluster to increase capacity ?
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Multipath
You can use OCFS on the two disks then share out the disk from each system to the other through iSCSI and create a software mirror on both systems this would acheive the cluster you are looking for. Also in the initial install of CetOS it has a way to set this up automagicly.
ASKER
thank for answer, i has been try using 3 server...
[root@st1 lvm]# clustat
Cluster Status for ronald @ Sun Apr 12 11:46:28 2009
Member Status: Quorate
Member Name ID Status
------ ---- ---- ------
192.168.1.131 1 Online
192.168.1.157 2 Online
192.168.1.156 3 Online, Local
but when i want to create logical volume got error like this :
[root@st1 lvm]# lvcreate -l 100%FREE -n mylv new_vg
Error locking on node 192.168.1.131: Volume group for uuid not found: 0ta7RuewwIB2PbX83x6TAOd0Qy
Error locking on node 192.168.1.157: Volume group for uuid not found: 0ta7RuewwIB2PbX83x6TAOd0Qy
Aborting. Failed to activate new LV to wipe the start of it.
what happend with thats message ?
i used all free space on 1 physical disk on each server to be stripped as 1 disk volume..its posible ?
[root@st1 lvm]# clustat
Cluster Status for ronald @ Sun Apr 12 11:46:28 2009
Member Status: Quorate
Member Name ID Status
------ ---- ---- ------
192.168.1.131 1 Online
192.168.1.157 2 Online
192.168.1.156 3 Online, Local
but when i want to create logical volume got error like this :
[root@st1 lvm]# lvcreate -l 100%FREE -n mylv new_vg
Error locking on node 192.168.1.131: Volume group for uuid not found: 0ta7RuewwIB2PbX83x6TAOd0Qy
Error locking on node 192.168.1.157: Volume group for uuid not found: 0ta7RuewwIB2PbX83x6TAOd0Qy
Aborting. Failed to activate new LV to wipe the start of it.
what happend with thats message ?
i used all free space on 1 physical disk on each server to be stripped as 1 disk volume..its posible ?
ASKER
i found some info in google..
************
clvm is a way to control/configure your storage in a cluster. It does
not provide storage from one machine /to/ a cluster.
There are several ways of making this happen though. You can use
GNBD, iSCSI, AOE, fibre channel, or pretty much any other method of
sharing block devices. Once all machines in your cluster can see the
same storage, then you will be able to use CLVM to configure/manage it.
brassow
************
so if i want to join 1 disk on each node i must use iscsi to see shared disk on all node then use lvm to join them..is that right ?
please give me solution..
************
clvm is a way to control/configure your storage in a cluster. It does
not provide storage from one machine /to/ a cluster.
There are several ways of making this happen though. You can use
GNBD, iSCSI, AOE, fibre channel, or pretty much any other method of
sharing block devices. Once all machines in your cluster can see the
same storage, then you will be able to use CLVM to configure/manage it.
brassow
************
so if i want to join 1 disk on each node i must use iscsi to see shared disk on all node then use lvm to join them..is that right ?
please give me solution..