Oh, I had forgotten about that patch…
Can you try any other clients? This may be a client issue (I did see some
suspicious code in the client).
It may also be that you need a fully qualified path (starting with a /).
It looks like Ganesha is doing the right thing though.
Frank
From: Pradeep [mailto:pradeep.tho...@gmail.com]
Sent: Monday, October 30, 2017 2:21 PM
To: Frank Filz <ffilz...@mindspring.com>
Cc: nfs-ganesha-devel <nfs-ganesha-devel@lists.sourceforge.net>;
ssaurabh.w...@gmail.com
Subject: Re: [Nfs-ganesha-devel] NFSv4 referrals not working with ganesha.
Hi Frank,
This is with latest version of Ganesha. The referral support is already in VFS:
https://review.gerrithub.io/c/353684
tcpdump is attached. From the tcpdump, we can see that the stat sent a LOOKUP
for the remote export and received a moved error. It also sent back the
fs_locations. But the client (CentOS 7.3) never followed that with a LOOKUP to
the remote server.
You can see that packet #41 has the correct FS locations. But client does not
do another lookup to get the correct attributes.
$ stat /mnt/nfs_d1
File: ‘/mnt/nfs_d1’
Size: 0 Blocks: 0 IO Block: 1048576 directory
Device: 28h/40d Inode: 1 Links: 2
Access: (0555/dr-xr-xr-x) Uid: (4294967294/ UNKNOWN) Gid: (4294967294/
UNKNOWN)
Context: system_u:object_r:nfs_t:s0
Access: 1969-12-31 16:00:00.000000000 -0800
Modify: 1969-12-31 16:00:00.000000000 -0800
Change: 1969-12-31 16:00:00.000000000 -0800
Birth: -
On Mon, Oct 30, 2017 at 12:13 PM, Frank Filz <ffilz...@mindspring.com
<mailto:ffilz...@mindspring.com> > wrote:
What version of Ganesha? I assume by “native” FSAL, you mean FSAL_VFS? Did you
add the fs locations XATTR support? FSAL_GPFS currently has the only in-tree
referral support and I’m not sure it necessarily works, but I’m unable to test
it.
If you have code for FSAL_VFS to add the fs locations attribute, go ahead and
post it and I could poke at it.
Also, tcpdump traces might help understand what is going wrong.
Frank
From: Pradeep [mailto:pradeep.tho...@gmail.com
<mailto:pradeep.tho...@gmail.com> ]
Sent: Monday, October 30, 2017 11:45 AM
To: nfs-ganesha-devel <nfs-ganesha-devel@lists.sourceforge.net
<mailto:nfs-ganesha-devel@lists.sourceforge.net> >
Cc: ssaurabh.w...@gmail.com
Subject: [Nfs-ganesha-devel] NFSv4 referrals not working with ganesha.
Hi all,
We are testing NFSv4 referral for Linux CentOS 7 with nfs-ganesha and are
running
into some serious issues.
Although, we were able to set up NFSv4 referral using the native Ganesha FSAL,
we could not get it fully functional for all Linux client system calls.
Basically, the NFSv4 spec suggests to return a NFS4ERR_MOVED on a
LOOKUP done for a remote export. However, this breaks the `stat` system call on
Linux CentOS 7 (stat’ results in a LOOKUP,GETFH,GETATTR compound). An easy way
to
reproduce the broken behavior is:
1) mount the root of the pseudo file system and
2) issue a `stat` command on the remote export.
The stat returned are corrupt.
After digging into the CentOS 7 client code, we realized that the stat operation
is never expected to follow the referral. However, switching to returning
NFS4_OK
for stat, then breaks `cd` or a `ls -l` command, because now we don't know when
to follow the referral.
Does anyone have a successful experience in setting up the NFSv4 referrals that
they could share? Or, if some suggestions on what we might be doing wrong?
Thanks
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