Hi,
Has anyone even seen this before - an NFS mount through Gluster that gets
the filesystem size wrong and is otherwise garbled and dangerous?
Is there a way within Gluster to fix it, or is the lesson that Gluster's NFS
sometimes can't be relied on? What have the experiences been running an
external NFS daemon with Gluster? Is that fairly straightforward? Might like
to get the advantages of NFS4 anyhow.
Thanks,
Whit
----- Forwarded message from Whit Blauvelt <whit.gluster at transpect.com> -----
Date: Sat, 28 May 2011 22:33:55 -0400
From: Whit Blauvelt <whit.gluster at transpect.com>
To: gluster-users at gluster.org
Subject: nfs mount in error, wrong filesystem size shown
User-Agent: Mutt/1.5.21 (2010-09-15)
I've got a couple of servers with several mirrored gluster volumes. Two work
fine from all perspectives. One, the most recently set up, mounts remotely
as glusterfs, but fails badly as nfs. The mount appears to work when
requested, but the filesystem size shown in totally wrong and it is not in
fact accessible. This is with 3.1.4:
So we have for instance on one external system:
192.168.1.242:/std 309637120 138276672 155631808 48% /mnt/std
192.168.1.242:/store
19380692 2860644 15543300 16% /mnt/store
where the first nfs mount is correct and working, but the second is way off.
That was the same result as when /store was nfs mounted to another system
too. But on that same other system, /store mounts correctly as glusterfs:
vm2:/store 536704000 14459648 494981376 3% /mnt/store
with the real size shown, and the filesystem fully accessible.
The erroneous mount is also apparently dangerous. I tried writing a file to
it to see what would happen, and it garbaged the underlying filesystems. So
I did a full reformatting and recreation of the gluster volume before
retrying at that point - and still got the bad nfs mount for it.
The bad nfs mount happens no matter which of the two servers in the gluster
cluster the mount uses, too.
Any ideas what I'm hitting here? For the present purpose, we need to be able
to mount nfs, as we need some Macs to mount it.
Thanks,
Whit
----- End forwarded message -----
