is scsi hard is required for clustering

eldo · 11-16-2009, 10:36 PM

Hi,

I install redhat cluster suite in vmware virtual machine, my question is for running the cluster scsi hard disk is mandatory or not. Can we use IDE hard disk instead of scsi.

kirukan · 11-16-2009, 11:37 PM

I think it is not mandatory at your first level of configuring cluster but if you plan to have common storage(say like SAN)then iscsi will help you

kbp · 11-16-2009, 11:50 PM

The Red Hat doco is pretty good:

http://www.redhat.com/docs/manuals/csgfs/

cheers

vishesh · 11-16-2009, 11:54 PM

I setup clustering on vmware server 2.1 few days back. You can implement clustering on ide disk pretty well. You can follow link in my signature to get my setup of vmware clustering.

eldo · 11-17-2009, 12:08 AM

Quote:

Originally Posted by vishesh

I setup clustering on vmware server 2.1 few days back. You can implement clustering on ide disk pretty well. You can follow link in my signature to get my setup of vmware clustering.

In Vmware cluster what fence device we need to select, once I have selected manual fence but end's upon error. So what you prefer?

vishesh · 11-17-2009, 12:29 AM

By editing your .vmx file you can specify disk that shared by two or more vmware guests. have you include these lines in your .vmx file

disk.locking = false
scsi1.present = true
scsi1.sharedbus = true
scsi1.virtualdev= "lsilogic"
scsi1:0.present = true
scsi1.0.filename = "d:virtualshareddisk"
scsi1:0.mode = "independent: -persistent"
scsi1:0.devicetype = "disk"

thanks

eldo · 11-17-2009, 02:27 AM

Quote:

Originally Posted by vishesh

By editing your .vmx file you can specify disk that shared by two or more vmware guests. have you include these lines in your .vmx file

disk.locking = false
scsi1.present = true
scsi1.sharedbus = true
scsi1.virtualdev= "lsilogic"
scsi1:0.present = true
scsi1.0.filename = "d:virtualshareddisk"
scsi1:0.mode = "independent: -persistent"
scsi1:0.devicetype = "disk"

thanks

Hi,

By your reply I understand this, that we can share hard disk among virtual machines. So how we can use that shared hard disk in other machines, for that we need IDE disk or SCSI disks?? please provide the steps for that..

vishesh · 11-17-2009, 02:48 AM

See this doesn't need scsi disk. only you need to do is to add disk (which you want to share) to one of your virtaul machine and then edit .vmx file of corresponding virtual machine. the parameter for .vmx i given in last reply tell and all virtual machines to identity those disks.

In other guest virtual machine check disk presence using 'fdisk -l'

eldo · 11-17-2009, 02:57 AM

Quote:

Originally Posted by vishesh

See this doesn't need scsi disk. only you need to do is to add disk (which you want to share) to one of your virtaul machine and then edit .vmx file of corresponding virtual machine. the parameter for .vmx i given in last reply tell and all virtual machines to identity those disks.

In other guest virtual machine check disk presence using 'fdisk -l'

Hi,

Thanks for reply, which file system is suitable for this, GFS ? because I need to configure cluster on vmachines. For that we need a common storage is it and also one more question can we use LVM for the shared disk.

vishesh · 11-17-2009, 03:17 AM

As i know GFS itself is a file system. Other than GFS you can also use ocfs2 which also is a clustered file system like GFS. No other file system to implement GFS.
I think you can use clvm for clustering, but i don't have much idea about that.

Thanks