Whats the intent here? tmpfs is meant to be node-local temporary storage by design. What are you trying to use it for? Michael -----Original Message----- From: linux-cluster-bounces@xxxxxxxxxx [mailto:linux-cluster-bounces@xxxxxxxxxx] On Behalf Of Lin Shen (lshen) Sent: Thursday, January 11, 2007 3:45 PM To: linux clustering Subject: RE: tmpfs on top of GFS > -----Original Message----- > From: linux-cluster-bounces@xxxxxxxxxx > [mailto:linux-cluster-bounces@xxxxxxxxxx] On Behalf Of Bryn M. Reeves > Sent: Thursday, January 11, 2007 2:50 PM > To: linux clustering > Subject: Re: tmpfs on top of GFS > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Lin Shen (lshen) wrote: > > If I mount a tmpfs filesystem on top of a GFS based root > filesystem at > > say /tmp, can I safely share the contents under /tmp among > the nodes? > > > > lin > > > > -- > > Linux-cluster mailing list > > Linux-cluster@xxxxxxxxxx > > https://www.redhat.com/mailman/listinfo/linux-cluster > > Maybe I misunderstand your question, but tmpfs will not be able to > share its contents between nodes the way GFS does. > > The tmpfs filesystem uses space available in the pagecache & swap > areas as a backing store instead of a dedicated block device. > > Mounting it on top of a GFS root at /tmp is only going to be visible > on a single node. Each node can do that and have its own tmpfs storage > available, but this won't make the /tmp mounts shared between the > cluster nodes. > > See Documentation/filesystems/tmpfs.txt in the kernel sources for more > details. > > Kind regards, > > Bryn. > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.5 (GNU/Linux) > Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org > > iD8DBQFFpr8q6YSQoMYUY94RAkCWAKC6b+VWxyW5ZMqJz+RuMJ5jCV5UTgCfYd4Z > DPDFOCAEPU0Ukj8YFky9zEo= > =IHfq > -----END PGP SIGNATURE----- > > -- > Linux-cluster mailing list > Linux-cluster@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/linux-cluster > I see. Can I use NFS to export tmpfs from one node to another then? Or are there any other better ways to share a tmpfs among the nodes. lin -- 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
