From nobody Thu Nov 25 17:13:59 2021 X-Original-To: bugs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id EB68118A5521 for ; Thu, 25 Nov 2021 17:13:59 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4J0Pc74b3Qz3JtK for ; Thu, 25 Nov 2021 17:13:59 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 7D96121355 for ; Thu, 25 Nov 2021 17:13:59 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 1APHDxcr083956 for ; Thu, 25 Nov 2021 17:13:59 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 1APHDxpI083955 for bugs@FreeBSD.org; Thu, 25 Nov 2021 17:13:59 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 260011] Unresponsive NFS mount on AWS EFS Date: Thu, 25 Nov 2021 17:13:59 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 13.0-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: rmacklem@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-bugs@freebsd.org MIME-Version: 1.0 ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1637860439; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=+gWHd3wVvQzDUQBxjM5+lbOfw9jPWEZHUcyqZq2gDMU=; b=CADgLXRzggfbNrdHwaTAS2TrcDfBifD51hS1ftpBdEt3IOY4zOPHA3vd+VZ5/7EAWD+Dca bPYZkJrEIzipIu1dJhNaIykm5/I3EETEsqqjdUvjkS+QDqfZK/uLVqPX0qnjS/QrECQwk7 Svl9RsXe7AKekvzVh0qaFO0k+0Qdg19EAeXH9FyrdXEovTshb3KcGO3iqcZOJAU4b5Q71p Oc/0hH4lXHpGahhd/cRUggGKiFPDWlo8bY9ra+9zqzUaDe8+QskHas2JTy62cQIQnN7TrC BvUcpAtGXJZTxqz2jnQe5vkccLRBZyTnkORfSBbzm6LP8yTBA/n/ElSWQIVeTQ== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1637860439; a=rsa-sha256; cv=none; b=PSlZUajk28EdIUP346XOLTN3xuqa3OJk3KTaVM0IoxdZ/OBXcGDlwrJgM+oM4IDFsN2sfw Logo8IDOV6W0kHo583rv04lbANLXT0s6pPEnk7NE3s9EAPtBEkzElJdJKEXs1jwgDy0/rH pS+7xQXcnf6ivTph9QlOtDHldVP+ME3X/pg5iDgVsJTCTw4b/iDZDeort4+IQS9dwD8i4I pnI4hxOPHcClAKgjVtvuzpvwOC7rzAqmnrpqxMh5f+5zfqx/LWvvXw79LQDCmrwyb6aJEr DgPunr2HO9uhkOoUaQwqU+5sn+ZlR07N+MwYzVhggwVuNRy9z9PwhxdUJNmTBA== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D260011 --- Comment #6 from Rick Macklem --- Oh, and my comment 2.r.t. don't run the nfscbd may not be good advice. Here's a more complete answer: The nfscbd(8) provides callback handling when it is running. Callbacks need to be working for the server to issue delegations or layouts (the latter is pNFS only). When the nfscbd(8) is not running, the server should work fine and never issue delegations or layouts. It should set a flag in the reply to the Sequence operation (the first one in each compound RPC) called SEQ4_STATUS_CB_PATH_DOWN. This is an FYI for the client. I found another round of bugs related to delegations during a recent IETF NFSv4 testing event. These are fixed in stable/13, but not 13.0. --> As such, delegations are problematic and you don't want them being issued. --> Don't run the nfscbd(8) daemon. Unfortunately Amazon does not attend these testing events, so what their server does is ??? for me. However, if it is known that the Amazon EFS never issues delegations or layouts (I believe cpercival@ said that was the case three years ago), then the server might be broken and get "perterbed" by the callbacks not working. --> In this case, you should run the nfscbd daemon by setting nfscbd_enable=3D"YES" in your /etc/rc.conf or start it manually. And, given the above, I think you can see why my initial advice was just "don't run it". --=20 You are receiving this mail because: You are the assignee for the bug.=