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Linux clustered filesyetems, GFS, etc.

I have the following dillema:

I have to connect 15 RedHat enterprise servers to storage device using ISCSI. Because files from this storage device will be simultaneously accessed from many servers, I have to use some mechanism for the file locking and sharing. I know that I can use GFS or NFS, but NFS is not an option due a to a slow performnace. GFS is a good option, but it's expensive - 2200$/server. I could you open source version of GFS for free, but I am not sure if I want to do that in production environment.

Could you recommend any other free/commercially available products or standard Linux toold , I could use for this setup?

Have anyone tried to use OpenSource GFS in production, any issues ?

What about EVMS ? Is it just a management tool, or it also can help me in my situation and provide file locking and sharing facilities ?

One more thing: we have a relatively limited budget and can't afford to spend more than 500$/server

Thanks a lot.
1 Solution

Haven't tried GFS (opensource version) but it is exactly the same as the Red Hat version... (get CentOS rpms...)

GFS is a good filesystem, and they have two lock-managers to choose from (GULM or DLM)

GrandUnifiedLockManager or DistributedLockManager

+ the lockmanager can be on any node
- slower then GULM

+ faster then DLM
- requires 1,3 or 5 lock-managers

The other option might be OCFSv2, but I haven't tried that at all...


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