From owner-freebsd-virtualization@freebsd.org Mon Oct 29 14:04:42 2018 Return-Path: Delivered-To: freebsd-virtualization@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 2EC6910DABBE for ; Mon, 29 Oct 2018 14:04:42 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id C00A47267E for ; Mon, 29 Oct 2018 14:04:41 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 8513B10DABBD; Mon, 29 Oct 2018 14:04:41 +0000 (UTC) Delivered-To: virtualization@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 73E8610DABBC for ; Mon, 29 Oct 2018 14:04:41 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.ysv.freebsd.org (mxrelay.ysv.freebsd.org [IPv6:2001:1900:2254:206a::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 14CC572679 for ; Mon, 29 Oct 2018 14:04:41 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.ysv.freebsd.org (Postfix) with ESMTPS id 349388AF3 for ; Mon, 29 Oct 2018 14:04:40 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id w9TE4eG9045270 for ; Mon, 29 Oct 2018 14:04:40 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id w9TE4egh045269 for virtualization@FreeBSD.org; Mon, 29 Oct 2018 14:04:40 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: virtualization@FreeBSD.org Subject: [Bug 225791] ena driver causing kernel panics on AWS EC2 Date: Mon, 29 Oct 2018 14:04:38 +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: 11.1-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: richard@primarysite.net X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@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 MIME-Version: 1.0 X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Oct 2018 14:04:42 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D225791 --- Comment #25 from Richard Paul --- This has been sat on my to do list for a while. I'm hoping that if I can g= et my next job out of the way this week I'll revisit this. Further to my previous posts we seem to see that on instances faced with moderate memory pressure whilst also seeing reasonable amounts of writing to disks that are running on ZFS datasets the reboots seem to happen more regularly.=20=20 We don't see this just where there is memory pressure, e.g. Varnish servers which are running purely within memory we haven't seen this even though the memory usage is very close to 100%. If we double the memory on a crashing instance, the issue goes away.=20 As such I'm going to attempt to force memory pressure on a test server with= an additional disk with a zpool and zfs dataset to attempt to reproduce this = on a recent 12.0 instance. --=20 You are receiving this mail because: You are the assignee for the bug.=