Return-Path: linux-nfs-owner@vger.kernel.org Received: from mail.avalus.com ([89.16.176.221]:53800 "EHLO mail.avalus.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755735Ab3AWRmO (ORCPT ); Wed, 23 Jan 2013 12:42:14 -0500 Date: Wed, 23 Jan 2013 17:42:01 +0000 From: Alex Bligh Reply-To: Alex Bligh To: "Myklebust, Trond" cc: linux-nfs@vger.kernel.org, ian.campbell@citrix.com, Alex Bligh Subject: Re: Fatal crash with NFS, AIO & tcp retransmit Message-ID: In-Reply-To: <4FA345DA4F4AE44899BD2B03EEEC2FA918331EF5@sacexcmbx05-prd.hq.netapp.com> References: <93D3AE9B4990994B2BCA75A9@Ximines.local> <4FA345DA4F4AE44899BD2B03EEEC2FA915C163B9@SACEXCMBX04-PRD.hq.netapp.com> <4FA345DA4F4AE44899BD2B03EEEC2FA915C17543@SACEXCMBX04-PRD.hq.netapp.com> <734E2E0455BD4515C657BA69@Ximines.local> <4FA345DA4F4AE44899BD2B03EEEC2FA915C1781E@SACEXCMBX04-PRD.hq.netapp.com> <4FA345DA4F4AE44899BD2B03EEEC2FA91832D572@sacexcmbx05-prd.hq.netapp.com> <5B18F9B0446E7F3CAA3BD81D@nimrod.local> <4FA345DA4F4AE44899BD2B03EEEC2FA918331EF5@sacexcmbx05-prd.hq.netapp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Sender: linux-nfs-owner@vger.kernel.org List-ID: Trond, --On 23 January 2013 17:37:08 +0000 "Myklebust, Trond" wrote: >> If you break the connection, and the written data is now not available >> to dom0 (as it's been mapped out), how would it ever get resent? IE >> it's not going to be available to the RPC layer either. > > There are typically more than 1 outstanding RPC call at any one time. > Breaking the connection would affect those other RPC calls. I understand that. I meant 'how does the write which failed ever get retransmitted now the data to be written has been lost?' -- Alex Bligh