From owner-freebsd-fs@freebsd.org Tue Mar 2 20:20:16 2021 Return-Path: Delivered-To: freebsd-fs@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 7C8E754F92C for ; Tue, 2 Mar 2021 20:20:16 +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 4DqpQm2wV8z3JZg for ; Tue, 2 Mar 2021 20:20:16 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 6371554F3FE; Tue, 2 Mar 2021 20:20:16 +0000 (UTC) Delivered-To: fs@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 633DF54F9AA for ; Tue, 2 Mar 2021 20:20:16 +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 4DqpQm2JtFz3Jcp for ; Tue, 2 Mar 2021 20:20:16 +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 431661CC79 for ; Tue, 2 Mar 2021 20:20:16 +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 122KKG5c021592 for ; Tue, 2 Mar 2021 20:20:16 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 122KKGlp021591 for fs@FreeBSD.org; Tue, 2 Mar 2021 20:20:16 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: fs@FreeBSD.org Subject: [Bug 244048] mksnap_ffs hangs machine (12.1 regression over 11.3) Date: Tue, 02 Mar 2021 20:20:15 +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: 12.2-RELEASE X-Bugzilla-Keywords: regression X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: mckusick@FreeBSD.org X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: fs@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-fs@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Mar 2021 20:20:16 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D244048 --- Comment #17 from Kirk McKusick --- (In reply to ml from comment #16 It is not necessary to run on stable/12. Running on any of the point releas= es is fine (i.e., 11.4, 12.2, etc). The contents of the files is very unlikely to be relevant to the crash. If = you can make an image of the disk, I have a program that walks over a disk image and zeros out every data block that is claimed by a regular file or a snaps= hot. The resulting image has only metadata remaining. The only customer data that will be disclosed is the names of their files, the structure of their direc= tory trees, and the sizes and ownership of their files and directories. The resulting image has the additional benefit of being very compressible. Let = me know if this level of disclosure is acceptable and if so I will resurrect my clrfs program and make it available to you. --=20 You are receiving this mail because: You are the assignee for the bug.=