|Summary:||NFS3 mounts no longer possible after upgrade to RedHat 6.0|
|Product:||[Retired] Red Hat Linux||Reporter:||Hermann Schichl <hermann.schichl>|
|Component:||knfsd||Assignee:||David Lawrence <dkl>|
|Status:||CLOSED NEXTRELEASE||QA Contact:|
|Version:||6.0||CC:||bill, derek.bamford, m.davis2, rshapiro|
|Fixed In Version:||Doc Type:||Bug Fix|
|Doc Text:||Story Points:||---|
|Last Closed:||1999-06-17 17:43:55 UTC||Type:||---|
|oVirt Team:||---||RHEL 7.3 requirements from Atomic Host:|
|Cloudforms Team:||---||Target Upstream Version:|
Description Hermann Schichl 1999-05-22 22:39:16 UTC
After upgrading to RedHat 6.0 NFS version 3 mounts are not longer possible. Result: Kernel message: svc: unknown version (3) Server: Out of the box RedHat 6.0 system Client: Digital Alpha running Digital UNIX 4.0
Comment 1 Jeff Johnson 1999-05-23 05:29:59 UTC
NFS3 mounts have never been supported under linux. However, the return code returned from knfsd when NFS3 mounts are attempted confuses the client into not trying NFS2. A work around is to explicitly request NFS version 2 when mounting on the client. I dunno what the DU 4.0 syntax is. If you succeed in doing the mount, could you add the syntax you used to this bug report? Thanks
Comment 2 Hermann Schichl 1999-05-23 10:33:59 UTC
Explicitly requesting Version 2 mounts from Digital UNIX is done using the 'nfsv2' mount flag as in: mount -o nfsv2 serverhost:serverdir clientdir ----------------------------------------------- After browsing through the source of kernel nfsd I figured out that NFS 3 mounts should be possible in principle. However, CONFIG_NFSD_NFS3 is not defined, which would (as it seems) include NFS 3 support. The interesting stuff is in nfs3proc.c, nfs3xdr.c, and nfssvc.c all in fs/nfsd.
Comment 3 Jeff Johnson 1999-05-23 16:13:59 UTC
AFAIK, NFS3 is not yet functional. Thanks for the DU 4.0 syntax and analysis.
Comment 4 Jeff Johnson 1999-05-25 15:23:59 UTC
*** Bug 3019 has been marked as a duplicate of this bug. *** There is a problem in the interaction between the Kernel nfsd and the rpc.mountd command. The kernel provides services for NFS version 2, but rpc.mountd registers itself as supporting version 1,2 and 3. This causes an NFS3 client (like SGI IRIX) to try to mount a linux filesystem using version 3, but whenever it tries to do any actual I/O on the filesystem, the I/O fails with a version error. I worked around the bug by fixing the NFS startup script to pass -V 2 -N 3 as arguments to rpc.mountd. A better fix would of course be to add support for NFS V3. It looks like there are bits and pieces of it in the kernel sources, but they did not seem to make it into the build.
Comment 5 Jeff Johnson 1999-06-03 14:02:59 UTC
I just packaged knfsd-1.3.3-1 -- still no man pages or NFSv3.
Comment 6 Jeff Johnson 1999-06-17 17:43:59 UTC
Man pages are now in knfsd-1.4-1. Still no NFSv3 support, but the linux mountd will not advertise NFSv3 anymore.