Rafael: Thanks for your reply. I believe NFS over GFS2 should be the solution. Now I have a question about GFS performance fine tuning. Is there any documents do you recommend? Thanks -- Gigi -----Original Message----- From: linux-cluster-bounces@xxxxxxxxxx [mailto:linux-cluster-bounces@xxxxxxxxxx] On Behalf Of Rafael Micó Miranda Sent: Sunday, September 27, 2009 4:19 AM To: linux clustering Subject: Re: GFS Volume Over NFS Hi Gigi, El vie, 25-09-2009 a las 19:09 -0500, Mathew, Gigi (JSC-EG)[Jacobs Technology] escribió: > Hi: > > > > I am configuring a Dell EqualLogic iSCSI array in a RHEL 5.3 platform > with two GFS2 volumes with RedHat Cluster Suite using DRAC (primary) > and APC (secondary) fencing devices. In my cluster configuration I > have DELL Servers (PE R900, PE6800, PE2800, PE1950) Blades (PE M1000, > PE1955, PE1855). Now I have few workstations (Precision 7500, > Precision 5500, Precision 690) which I would like to share the above > GFS2 volume over NFS (why? They are not in the same location and > currently I use NIS/YPBIND/AUTOFS). Why should I share it? (Because I > have user home directories on this GFS2 volume, which has to seen from > these workstations as they login). What are the options I have? How > do I achieve it? I had seen how to share an NFS over GFS, but NOT the > other way. Any suggestion will be greatly appreciated. > > > > Thanks > > > > Gigi Mathew > > > -- > Linux-cluster mailing list > Linux-cluster@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/linux-cluster Maybe i'm understanding you wrong, let me explain what i have understood from your explanation: 1.- You have several servers sharing iSCSI volumes from an iSCSI array. 2.- This servers use GFS2 as filesystem on this volumes to share, between themselves, the information in them 3.- You want to make other computers, workstations, get access to this info. They are not in the same location/network so they can not access the iSCSI array by themselves. 4.- You plan to share the iSCSI volumes from the array through a NFS export via the servers which already have access to them, so workstations will get access to the information via NFS. Is this right? If so, you should have a look at this document: http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Configuration_Example_-_NFS_Over_GFS/index.html NFS over GFS2 is, in my opinion, exactly what you need. The other option i think you are thinking about, GFS2 over NFS, cant be done. GFS is a filesystem you use over a device or partition. NFS is a file sharing protocol you use to export an already existing filesystem (EXT2, EXT3, XFS or GFS itself). When you mount a NFS volume you don't have access to a device, so you cant use GFS on it when already mounted. You maybe are thinking in GFS2 over GNDB (global network block device) or GFS2 over DRBD (distributed redundant block device), but i think previous suggestion is simpler than this one. You can also have a look to this approach here: http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.4/html/Global_Network_Block_Device/index.html I hope this helps. Cheers, Rafael -- Rafael Micó Miranda -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
