Hi Brem, If Gigi wants to build and storage architecture of "GFS over NFS over GFS" i would say "this can't be done". As i said in my previous mail: "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." Which is your opinion in this, Brem? PS: It's not going bad, thanks for asking Cheers, Rafael El dom, 27-09-2009 a las 12:43 +0200, brem belguebli escribió: > Hi, > > The last sentence seems to mean that Gigi wants to create a GFS on top > of a NFS FS. > > This GFS will be then exported thru NFS . > > Gigi, is that wjat you want to do ? > > PS: how is it going Rafael ? > > 2009/9/27 Rafael Micó Miranda <rmicmirregs@xxxxxxxxx>: > > 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 -- Rafael Micó Miranda -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
