From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wendy Cheng Date: Thu, 29 Jun 2006 17:49:04 -0400 Subject: [Cluster-devel] Re: [NFS] [RFC PATCH 1/3] NLM lock failover - lock release In-Reply-To: <76bd70e30606291211t338164adq985e43726da51e59@mail.gmail.com> References: <44A417E7.5090500@redhat.com> <76bd70e30606291211t338164adq985e43726da51e59@mail.gmail.com> Message-ID: <44A44AD0.7080506@redhat.com> List-Id: To: cluster-devel.redhat.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Chuck Lever wrote: >On 6/29/06, Wendy Cheng wrote: > > >>The patch piggy-backs the logic into "rq_daddr" field of struct svc_rqst >>where NFS server ip address is stored. Upon writing IPv4 address in >>standard dot notation into /proc/fs/nfsd/nlm_unlock, the logic will >>examine NLM's global nlm_files list and subsequently unlock the >>associated file if server ip address matches. >> >>Due to the size of rq_daddr (u32), we would not be able to support IPV6 >>for this round of changes. Another to-do item is to enable client:server >>ip pairs to allow NFS V4 failover. >> >> > >FYI: I have a patch in my IPv6 patchset that increases the size of >this field specifically in order to hold an IPv6 address. See: > > http://oss.oracle.com/~cel/linux-2.6/2.6.17/patches/52-svc-rq_daddr.diff > >for the individual patch, and surrounding patches for more context. > > > ok, thanks ... -- Wendy -- S. Wendy Cheng wcheng at redhat.com