From: Chuck Lever Subject: Re: NFS_UNSTABLE vs. FILE and DATA sync. Date: Mon, 06 Aug 2007 12:37:48 -0400 Message-ID: <46B74E5C.4060400@oracle.com> References: Reply-To: chuck.lever@oracle.com Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="------------000608090401060506010306" Cc: nfs@lists.sourceforge.net To: Wim Colgate Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list2-new.sourceforge.net with esmtp (Exim 4.43) id 1II5bo-0006NO-RO for nfs@lists.sourceforge.net; Mon, 06 Aug 2007 09:39:08 -0700 Received: from rgminet01.oracle.com ([148.87.113.118]) by mail.sourceforge.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.44) id 1II5br-00087w-M9 for nfs@lists.sourceforge.net; Mon, 06 Aug 2007 09:39:13 -0700 In-Reply-To: List-Id: "Discussion of NFS under Linux development, interoperability, and testing." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: nfs-bounces@lists.sourceforge.net Errors-To: nfs-bounces@lists.sourceforge.net This is a multi-part message in MIME format. --------------000608090401060506010306 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Wim Colgate wrote: > If I have a soft mount, and open a file with O_DIRECT and O_SYNC, should > I ever expect a callback (nfs_writeback_done) with a successful > task->tk_status (i.e >= 0) with the committed state > (resp->verf->committed) set to NFS_UNSTABLE? Yes, this can happen if the server decides to return NFS_UNSTABLE. Rare, but possible. > A secondary question: if the above is expected, does this occur because > someone is caching the write and is there a mechanism to disable this > effect? Servers can return NFS_UNSTABLE to any WRITE request, so I can't think of a way this might be disabled. --------------000608090401060506010306 Content-Type: text/x-vcard; charset=utf-8; name="chuck.lever.vcf" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="chuck.lever.vcf" begin:vcard fn:Chuck Lever n:Lever;Chuck org:Oracle Corporation;Corporate Architecture: Linux Projects Group adr:;;1015 Granger Avenue;Ann Arbor;MI;48104;USA title:Principal Member of Staff tel;work:+1 248 614 5091 x-mozilla-html:FALSE url:http://oss.oracle.com/~cel version:2.1 end:vcard --------------000608090401060506010306 Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ --------------000608090401060506010306 Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs --------------000608090401060506010306--