From owner-freebsd-net@freebsd.org Tue Jan 17 05:03:08 2017 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3F539CB3012 for ; Tue, 17 Jan 2017 05:03:08 +0000 (UTC) (envelope-from 01000159aac969e6-b2fc3913-d04e-42d4-befd-402ed0d830bf-000000@amazonses.com) Received: from a8-13.smtp-out.amazonses.com (a8-13.smtp-out.amazonses.com [54.240.8.13]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 093341C0E for ; Tue, 17 Jan 2017 05:03:07 +0000 (UTC) (envelope-from 01000159aac969e6-b2fc3913-d04e-42d4-befd-402ed0d830bf-000000@amazonses.com) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/simple; s=vnqrkfnvu6csdl6mwgk5t6ix3nnepx57; d=tarsnap.com; t=1484629043; h=To:From:Subject:Message-ID:Date:MIME-Version:Content-Type:Content-Transfer-Encoding; bh=PwKGFIS+gXQI7q1Yr+8XcTpTpzivkbY/a4eJr1M1gvI=; b=l+Y8vt/bL/XEVP8LziPZDM26OqLj3MLu1tYqT+tOKKuf5j2ReKXIVMPe1JhNWads E1i36g8Y3LWgfwDC8WsPcPkDe1fF2FQJmOrFVUammexftmNDZRm6koyCHTF6npnMq7h VyGJDVVbpZjU8SEyKg9xaOgZKiZqH22KspGT0TPY= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/simple; s=6gbrjpgwjskckoa6a5zn6fwqkn67xbtw; d=amazonses.com; t=1484629043; h=To:From:Subject:Message-ID:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:Feedback-ID; bh=PwKGFIS+gXQI7q1Yr+8XcTpTpzivkbY/a4eJr1M1gvI=; b=uLORkeykjN1rrCrfkafkYa7WOiRrqiL4xgew7oGeBM8sWJezle07gIzkUM/Jzs/m dA2nKWk80oBod6QseiaNWoTkEr2OpPsm4sKf5hxYqrtp1UeJQrsfynPqIGPSAujOPWE WvZg5XNnn0mbCikP77wsfITB6Jbc1w0p59KJ0024= To: freebsd-net@freebsd.org From: Colin Percival Subject: sosend returning ERESTART Message-ID: <01000159aac969e6-b2fc3913-d04e-42d4-befd-402ed0d830bf-000000@email.amazonses.com> Date: Tue, 17 Jan 2017 04:57:23 +0000 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-SES-Outgoing: 2017.01.17-54.240.8.13 Feedback-ID: 1.us-east-1.Lv9FVjaNvvR5llaqfLoOVbo2VxOELl7cjN0AOyXnPlk=:AmazonSES X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Jan 2017 05:03:08 -0000 I think I've tracked an NFS problem down to sosend returning ERESTART; it looks like it's easy to work around this, but I'm not sure *why* sosend is returning ERESTART... or for that matter *how* since I can't find anywhere in relevant code where that gets returned. Am I missing something obvious? In case it matters, this is NFS making use of RPC code, sosending over a TCP connection which goes out over an ixv interface. -- Colin Percival Security Officer Emeritus, FreeBSD | The power to serve Founder, Tarsnap | www.tarsnap.com | Online backups for the truly paranoid