From nobody Wed Nov 29 08:23:30 2023 X-Original-To: fs@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 4SgC5M0Fwlz52LP2 for ; Wed, 29 Nov 2023 08:23:35 +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 4SgC5L6HPdz3Rsk for ; Wed, 29 Nov 2023 08:23:34 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1701246214; 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=lKJersnngn1vYwIe8XRmkLGqpwcrCI90imy95Imp1r0=; b=uwaSoz41Ftf11QytxN2+C6w9WaNycic5+RlHwgPw5HPgsVNod5OcCbz0b/4pVMQV3w1/p2 tN+wNZ6ZLeeGPAkasxAu3JqyrctKLDNUrGZ5iyExk90rft+R3ZbbQtpEO09RSXk4T3c1aJ ptlERt1OuQyp1IWjW586++s1or4+J/qBojGzumPeeGupDQOMUpk91/cmHtk/69bYHw4BL2 R7Uk53As5Nk0uHnICFiiHn4O4XjnUf383NbdEHHjk5nEGupRAK7Xryr15c0uXwmX2e64m+ 0nqy/Ma81y6uKGW3MJTWOa7HR0YojRxPpiPnnd+YefC2dPAQJshPkrnDLwhk0A== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1701246214; a=rsa-sha256; cv=none; b=lrObF5JRl4y3mgVj8nP8Q0K8+mL048rSixsepnlWUhW2eT3ZsLJBdG09c4JFGjeXnOLm2Z EHZvphzPIa8w+d7wdc0M8TOXlfFOIOCZBdXr7sLsfw1xe0kOSNXoaBSvP6PSw9/w6PAgHB ENHrxO31GR0lTDNZmUpykP78oVNs/lx1V0y/ktXx5HI5SJTZKUTA0D6jgVHtolMpiA8gPv 0NM3DOkNb4MTEgCsstiUY33st566jsCPCE5oLpeEPiFZBY/0B/YsKNNgKAf4qscqZyFYwP qB8S7qn47eClQljbIk8WIfIIgpN4hhOwvlO5J+67kJEP8s6hMMllk/AyXPgNCQ== 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 4SgC5L5MjVzyCJ for ; Wed, 29 Nov 2023 08:23:34 +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 3AT8NY0T009090 for ; Wed, 29 Nov 2023 08:23:34 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 3AT8NY9O009089 for fs@FreeBSD.org; Wed, 29 Nov 2023 08:23:34 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 275308] EN tracking issue for potential ZFS data corruption Date: Wed, 29 Nov 2023 08:23:30 +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: 14.0-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: netchild@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 List-Id: Filesystems List-Archive: https://lists.freebsd.org/archives/freebsd-fs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-fs@freebsd.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D275308 --- Comment #15 from Alexander Leidinger --- (In reply to Dave Cottlehuber from comment #14) > 12.x existing zpools: It is not known if there is an impact or not. There are now reports that OpenZFS 0.6.x could be affected and people want to test the initial Solaris= ZFS release for this bug. > Open questions: It doesn't matter if cp uses lseek() or not. There exist applications out t= here which make use if it, and as such the likelyhood of an issue is not 0. As it also relies on parallel read/write operations and the right timing, the likelyhood may be very small (https://github.com/openzfs/zfs/issues/15526#issuecomment-1826182928 states 0.00027% of real world corruption for a particular use case, but no idea how likely this use case is for others... or what the use case was). What we know is that poudriere runs on 15-current where block cloning is enabled can trigger the issue in a way that multiple people have stumbled o= ver it. For all the previous years we are not aware of any obvious use case whi= ch may have triggered the problem in a way that someone would have attributed = it to ZFS. So yes, we need to fix it. Yes it is a good idea to use the sysctl = to even decrease the likelyhood. But no, we should not have sleepness nights. = If you don't use ECC RAM I would guess the likelyhood of having bad data due t= o a RAM issue is higher. --=20 You are receiving this mail because: You are the assignee for the bug.=