From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk0-f173.google.com ([209.85.220.173]:33716 "EHLO mail-qk0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753300AbcGFN0k (ORCPT ); Wed, 6 Jul 2016 09:26:40 -0400 Received: by mail-qk0-f173.google.com with SMTP id e3so112844773qkd.0 for ; Wed, 06 Jul 2016 06:26:39 -0700 (PDT) Message-ID: <1467811595.3622.2.camel@redhat.com> Subject: Re: When can nfsv3 returns nfs3err_jukebox to client? From: Jeff Layton To: "Mkrtchyan, Tigran" , Pankaj Singh Cc: linux-nfs@vger.kernel.org Date: Wed, 06 Jul 2016 09:26:35 -0400 In-Reply-To: <1841001989.22448255.1467799567282.JavaMail.zimbra@desy.de> References: <1841001989.22448255.1467799567282.JavaMail.zimbra@desy.de> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Sender: linux-nfs-owner@vger.kernel.org List-ID: On Wed, 2016-07-06 at 12:06 +0200, Mkrtchyan, Tigran wrote: > Hi, > > ----- Original Message ----- > > > > From: "Pankaj Singh" > > To: linux-nfs@vger.kernel.org > > Sent: Wednesday, July 6, 2016 7:52:45 AM > > Subject: When can nfsv3 returns nfs3err_jukebox to client? > > > > Hi All, > > > > I have read in the RFC 1813 that "nfs3err_jukebox" will be return only > > when server is not able to finish the RPC request within time. To > > indicate client to wait and retry again. > > > > Could anyone tell me is there any senario where NFSv3 or SUN RPC can > > send this error to client, if not returned from base filesystem? > > > If a migrating file system exported through NFS, then server may return > err_jukebox/delay to the client on an IO request while mounting the offline > volume or tape to make it accessible. > > Tigran. > I think that was the original intent, but many servers will return that whenever there is a problem that is perceived as temporary. For instance, knfsd will often return that when it hits a problem allocating memory while processing an RPC. -- Jeff Layton