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Old 06-06-2012, 02:49 AM   #1
call_krushna
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Lvm clustering vrs NFS clustering


Existing scenario:
configured LVM with 3 volumes in a linux server, and configured NFS server on the same machine.

Now we are able to mount the NFS share within the network.

required scenario:

now our requirement is to make the same NFS volume as high availability. Suggest me i should go with LVM clustering or NFS clustering?

LVM and NFS clustering are the thoughts i have. please let me know how i can make the high availability/ fail-over/ replication of that volume.

OS :- Ubuntu 12.05
Volumes :- 500gbx3

Any help is highly appreciable .
 
Old 06-06-2012, 06:44 AM   #2
maccas17
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Hi,

One, straightforward, approach would be to configure a HA cluster of two nodes, which both have access to the shared storage (i.e. the lvols your NFS share(s) exist on). You would effectively have an NFS cluster package that has resources consisting of a virtual IP address and the NFS volume group. The package can run on either node, should one fail the package fails over to the other node and your NFS clients continue to access it through the VIP.

There are a number of different clustering solutions available, some only for certain distros. I guess it depends just how critical this NFS data store is to you and whether you want vendor backed support. HP provide Serviceguard for Linux - there is a license fee for the product and support (would need to check they agree to support your hardware), but they also have a free NFS toolkit (to do exactly what you want). Red Hat and SUSE also do their own clustering solutions and there are other community based options, such as DRBD.

Hope this helps.
 
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Old 06-06-2012, 06:51 AM   #3
maccas17
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Sorry, I only saw you'd posted your OS details after I'd already hit reply!

Still, would be easy to switch your NFS store to a different distro if that had the best clustering options for you. DRDB is available for Ubuntu; I think Serviceguard for Linux support is planned for Ubuntu, but currently its RH or SLES.
 
Old 06-06-2012, 06:56 AM   #4
maccas17
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These look good, specific How-Tos for NFS failover cluster with DRDB:

https://help.ubuntu.com/community/HighlyAvailableNFS

http://www.howtoforge.com/highly-ava...bian-5.0-lenny
 
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Old 06-06-2012, 07:01 AM   #5
call_krushna
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Talking

Quote:
Originally Posted by maccas17 View Post
These look good, specific How-Tos for NFS failover cluster with DRDB:

https://help.ubuntu.com/community/HighlyAvailableNFS

http://www.howtoforge.com/highly-ava...bian-5.0-lenny
Hi maccas17,

I will follow the Url and will configure the NFS clustering .I really appreciated your help .

Thanks a ton.
 
  


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