[Linux-cluster] Clustered filesystem questions for shared storage on CentOS/vmWare/SAN
dkelson at gurulabs.com
Fri Jan 13 20:50:13 UTC 2012
A few comments below.
On Fri, 2012-01-13 at 12:30 -0800, Wes Modes wrote:
> I have some general clustered filesystem questions for you. I'm wading
> 1) First several online sources have pointed me to the Microsoft
> Clustered Filesystem doc to set up my linux clustered FSs on vmWare.
> Though it deals with MSCS, I can see that it has some applicability.
> However, I have yet to find a step-by-step guide to linux clustered
> filesystems. Is there a better suited document to guide me thorough the
> process of creating shared filesystems on CentOS/RHEL on vmWare across
> 2) Is it necessary to create a private network for access to the shared
> filesystem as the MSCS doc suggests?
> 3) So far I've been looking at GFS because it is native to
> CentOS/RHEL. Is there a better non-commercial/free choice?
Not really. Probably the next most popular is OCFS2.
> 4) Is there a clustered filesystem method that supports vmWare HA?
> This is important to us.
Not sure what you mean. Do you mean fencing?
> 5) Seems there at least three different methods to set up GFS (using
> parted, using lvmconf, and using iSCSI). If I go with GFS, which method
> should I use?
GFS2 requires shared storage such as SAN, iSCSI or DRBD. Pick one.
>From the RH docs, "While a GFS2 file system may be used outside of LVM,
Red Hat supports only GFS2 file systems that are created on a CLVM
On RHEL6 and clones, clvmd requires cman.
GFS2 requires fencing for safety and reliability suitable for
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