From owner-freebsd-bugs@freebsd.org Mon Mar 9 00:36:05 2020 Return-Path: Delivered-To: freebsd-bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 048F6252BD8 for ; Mon, 9 Mar 2020 00:36:05 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 48bK5c5rBXz4DRF for ; Mon, 9 Mar 2020 00:36:04 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id AFB6C252BD5; Mon, 9 Mar 2020 00:36:04 +0000 (UTC) Delivered-To: bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id ADA7A252BD4 for ; Mon, 9 Mar 2020 00:36:04 +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) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 48bK5c1z34z4DQ1 for ; Mon, 9 Mar 2020 00:36:04 +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) server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 1C098270C for ; Mon, 9 Mar 2020 00:36:04 +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 0290a3Gi001361 for ; Mon, 9 Mar 2020 00:36:03 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 0290a3JS001360 for bugs@FreeBSD.org; Mon, 9 Mar 2020 00:36:03 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 244685] gjournal kernel panic with vfs.write_behind=0 Date: Mon, 09 Mar 2020 00:36:03 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 12.1-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: spy@spy.zp.ua X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: 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-bugs@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 09 Mar 2020 00:36:05 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D244685 Bug ID: 244685 Summary: gjournal kernel panic with vfs.write_behind=3D0 Product: Base System Version: 12.1-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: spy@spy.zp.ua Trying to copy huge file to gjournaled filesystem causes reboot just after a few seconds, if vfs.write_behind=3D0, and works fine with vfs.write_behind= =3D1 Tested in such conditions under 12.1-RELEASE and 11.3-RELEASE: #/dev/gpt/ada0-data - 200Gb on SATA disk #/dev/gpt/nvd0-log - 1Gb on NVME disk gjournal label -vh /dev/gpt/ada0-data /dev/gpt/nvd0-log mount -o "async,atime=3Doff" /dev/gpt/ada0-data.journal /dst mount -o "async,atime=3Doff" /dev/gpt/nvd0-data /src dd if=3D/dev/random of=3D/src/60gb bs=3D1m count=3D60000 sysctl vfs.write_behind=3D0 cp /src/60gb /dst/ I didn't test it neither with slow /src device, nor with fast /dst device. With bigger log device, we can get panic later, and with huge enough log de= vice (I tried 30Gb), it can work fine without reboots. --=20 You are receiving this mail because: You are the assignee for the bug.=