Re: [nfsv4] [FedFS] XDR encoding of path "/"
James Lentini <jlentini@netapp.com> Wed, 13 October 2010 21:08 UTC
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Date: Wed, 13 Oct 2010 17:09:51 -0400
From: James Lentini <jlentini@netapp.com>
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Subject: Re: [nfsv4] [FedFS] XDR encoding of path "/"
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On Wed, 13 Oct 2010, david.noveck@emc.com wrote: > It seems like the right place is RFC3530bis. We should of put it in > RFC3530 and then we wouldn't have two forms to deal with. But that's > life. A clarification in RFC3530bis would be great. > I have no objection to this being mentioned in a FedFS document but > since pathname4 is introduced by RFC3530, this piece of clarification > belongs in RFC3530bis. The FedFS admin protocol defines an XDR type, FedFsPathName, with the same structure as a pathname4. For that reason, I could imagine a note about this in draft-ietf-nfsv4-federated-fs-admin. If this issue is discussed in RFC3530bis, then a reference in draft-ietf-nfsv4-federated-fs-admin to the relevant text RFC3530bis would make sense to me. What would the text in RFC3530bis say about this? > -----Original Message----- > From: nfsv4-bounces@ietf.org [mailto:nfsv4-bounces@ietf.org] On Behalf > Of Spencer Shepler > Sent: Wednesday, October 13, 2010 12:15 PM > To: 'James Lentini'; nfsv4@ietf.org > Subject: Re: [nfsv4] [FedFS] XDR encoding of path "/" > > > > > -----Original Message----- > > From: nfsv4-bounces@ietf.org [mailto:nfsv4-bounces@ietf.org] On Behalf > Of > > James Lentini > > Sent: Wednesday, October 13, 2010 7:17 AM > > To: nfsv4@ietf.org > > Subject: [nfsv4] [FedFS] XDR encoding of path "/" > > > > > > At the BAT, Chuck Lever and I discussed what the pathname4 encoding of > "/" > > should be. > > > > In addition to being used by the fs_locations and fs_locations_info > > attributes, the pathname4 format is used by the fedfsNfsPath LDAP > > attribute (see Section 4.2.1.14 of > draft-ietf-nfsv4-federated-fs-protocol- > > 09), and the FedFsPathName XDR type (see > draft-ietf-nfsv4-federated-fs- > > admin-07). > > > > I'm aware of two different approaches to encoding "/". > > > > One interpretation is to encode an array with zero compnent4 values. > > This encoding is a single 32-bit field containing a 0. The Linux NFS > > server and the SNSDB tools use this format. > > > > Another interpretation is to encode an array with one zero-length > > component4 value. The encoding of this is a 32-bit field containing a > > 1 followed by a 32-bit field containing a 0. > > > > The Linux NFS client appears to accept both of these encodings for > "/". > > > > Are there any implementations using a different encoding than the ones > > above? > > > > I'm thinking it would make sense to record these different formats or > > recommend the use of a specific format in one (or both) of the FedFS > > specifications. > > > > Good point. FedFS specification is a good choice. As to the specifics, > I would mildly prefer both be specified as acceptable encodings. > > Spencer > > > _______________________________________________ > nfsv4 mailing list > nfsv4@ietf.org > https://www.ietf.org/mailman/listinfo/nfsv4 > >
- [nfsv4] [FedFS] XDR encoding of path "/" James Lentini
- Re: [nfsv4] [FedFS] XDR encoding of path "/" Spencer Shepler
- Re: [nfsv4] [FedFS] XDR encoding of path "/" david.noveck
- Re: [nfsv4] [FedFS] XDR encoding of path "/" James Lentini
- Re: [nfsv4] [FedFS] XDR encoding of path "/" david.noveck