[Linux-cluster] partitioning of filesystems in cluster nodes

[Greg Forte]

Where have you gotten these ideas?  LVM and software raid are not 
mutually exclusive with GFS.  Your local disks can easily have LVM 
volumes and use software (or hardware) RAID, no problem.  Unless you're 
trying to export local disks as GFS volumes via GNDB (which I can't 
speak to, have never done that), there shouldn't be any restrictions on 
how you can configure the local disks.  If you want certain portions of 
the local filesystem(s) to be located on the SAN instead, it's as simple 
as a symlink (as Bob indicated).

-g

RR wrote:
> Thanks Bob, that was my thought as well but just wasn't sure if that was the
> best way to implement partitioning. I suppose I'm still a bit not comfy with
> GFS considering I've never seen it in action but should do in a few days
> time, as I'm starting to set up the cluster suite and GFS now. 
> 
> I'm assuming I still cannot use Logical Volumes on the cluster nodes while
> the nodes are being used within a cluster in conjunction with GFS? How do
> people provide for RAID1 type redundancy against system boot-disk failure
> for each of their cluster nodes if I can't setup software raid for these
> nodes? Do I run a cron job to sync up the two drives within the system so in
> case of a drive failure, I can at least boot the system using the secondary
> drive?
> 
> Thanks,
> RR
> 
> -----Original Message-----
> From: linux-cluster-bounces at redhat.com
> [mailto:linux-cluster-bounces at redhat.com] On Behalf Of Robert Peterson
> Sent: Thursday, June 22, 2006 4:46 AM
> To: linux clustering
> Subject: Re: [Linux-cluster] partitioning of filesystems in cluster nodes
> 
> Hi RR,
> 
> For your the local root partitions on the individual nodes, it's probably
> best to use ext3.
> On the SAN, use GFS and Red Hat Cluster Suite.  Then perhaps you can create
> a symlink from your local node's mount point to the SAN, e.g. from
> /mnt/gfs_san/var/spool to its local /var/spool.
> 
> Regards,
> 
> Bob Peterson
> Red Hat Cluster Suite
> 
> 
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