From nobody Thu Aug 21 15:10:00 2025 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 4c76F56t9Yz65GvG for ; Thu, 21 Aug 2025 15:10:01 +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 "R12" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4c76F52f2xz3CsH for ; Thu, 21 Aug 2025 15:10:01 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1755789001; 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=DoLaSXCgzIWqSA3FyXd0kXRbov+gL4+Q3f6/iwijPJ4=; b=B3SlLb2cRzk9TVddh0VmMyEPvR0zFrruDSaYR2dt9d7mhizvlC/7BVFNL1EeJKHr0PK7tW v1h+KPH6AVwSnXV/0RHoI+KTGE1VNhC4wk2od5voahWYnltqlz8T5Ol6x31bKAeY6lU2Vh aecHC1k42m0sqNlghi49xWpsy8B8Wy/kEK7XSAexKWDCKe8jGCMlAtEu4Zdk7IyNjzadBx bcTZ+jAScPJHoNeGdYjuf5IIAgD+8vLmc7SdZpenDnpBs+As59cCOVMq+3kOffQVfHhoLM 9grRliN3lI5QpXRqoOVJLOrUx62hAcrdFofK9BRXXWXEJZ8zBOXXYq0mk+iqjw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1755789001; 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=DoLaSXCgzIWqSA3FyXd0kXRbov+gL4+Q3f6/iwijPJ4=; b=wnN4Q4cavKBV80pzU2M9c2svJJSJwPOg/NsmizHA0yuZdKBxewa+yLIIJgNygZFo35jZMx WFzfjmvVtJMt1aP9Te2GQNi2lSbJ2qYsgpIHzJ2eWUQWrRj8ZsOXF0gmdRHJ8Sw/Wsi8dD ND9rYiVIT3JK78pQDqeN8bopwtdl/0Lrm7Y5WRjQQu4FZGd6MnWZAFTb1dsOGTAivdDepm Hgv8hswALtHuCtmOqlZFVtYUxqrJYi+A2M3k4i7Sxv+vBhScDP9kkZcHWGtg5SCbhTDPtx Ken+0gTNXWtZahH9crYcdZV2C1GzvjyptfrEKNajGY9vU7w1QM2fMYQ1l6xRPg== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1755789001; a=rsa-sha256; cv=none; b=b8oFHKjyCBPJD0dh/s/eHPaEYo+E8u5/yqX+nwLnWhvjN7a0hpASZ/HxkB/J89LgySg2GN AE82iNxjI1iVehzC4I3xmEvQN7YgwYkmq5Dxs+wYf7I3WSIZLtOBvhzkX64kH+2gwP2SIn ZXjn2bUgCyHpHeXq57/hQMwmAhS8mlxqTFhT6JX5mj/ICsLCceIlE/Rb66Bg0CFfZNsy4b IMXE5AKeI/cK9/HGBzk8UhmAULstV3MX7bcMlzhKjrV/pVlhuGpCgEULoYJ3nMK+BAWNHV nIzsk0FixYQfqbUZhcmwkdAaQdW7iZQR3wdcM3lmhzb6il5sY5mRfR8iFKaDyg== ARC-Authentication-Results: i=1; mx1.freebsd.org; none 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 4c76F5238qz13yk for ; Thu, 21 Aug 2025 15:10:01 +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 57LFA0fi061824 for ; Thu, 21 Aug 2025 15:10:00 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 57LFA01G061823 for bugs@FreeBSD.org; Thu, 21 Aug 2025 15:10:00 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 288777] System freezes after upgrading to 14.3-RELEASE Date: Thu, 21 Aug 2025 15:10:00 +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: 14.3-RELEASE X-Bugzilla-Keywords: regression X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: BlueSkiesApplePies+FreeBUG@pm.me 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-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" 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 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D288777 --- Comment #7 from Bren --- I moved our remote backup process to rsync'ing the live filesystem vs. the snapdirs. Now I'm seeing similar but slightly different behavior: - After running the rsync process for some time, disk IO freezes completely= on both the rpool and storage pools. - I can get logged in, but if I run even "dmesg" the command hangs forever = (the OS drives are separate SSDs from the storage pool drives to that's odd). I can't ctrl-c out of it. - Running "top -mio" I see a zfs process at 100%. - This gets logged: swap_pager: indefinite wait buffer: bufobj: 0, blkno: 260988, size: 4096 - watchdogd doesn't always trigger a reboot. I'm running that with the these flags: -t 120 --pretimeout 60 --pretimeout-action log,printf,panic -e '/bin/ps' -w= -T 15 - I capped arc_max to 50% physmem which didn't help: # sysctl -a | rg 'arc_(?:max|min)|physmem' vfs.zfs.arc_min: 2147483648 vfs.zfs.arc_max: 51339679744 hw.physmem: 102679359488 Last time this happened, I showed 50G free, 34G ARC total, 1954MB swap free. Before changing these settings, I did see memory use going above 90% but st= ill several gig free. Most of this was ARC I imagine. As I understand it, ARC is evictable, so even if the system started to run out of available memory, it would free up memory from ARC before swapping or anything like that. I will revert these settings. - If I stop the rsync process the system recovers after a few minutes. Oddly enough (and thankfully) our production server is on 14.3-RELEASE and doesn't have this problem. It's mainly serving NFS and is fairly loaded, but probably not as much as the backup server running 2-4 x constant rsync processes, backups over NFS, plus regular ZFS snapshot sends from primary to backup. I think I'll reboot into 14.2 later today. Let me know if I can help with t= his in any other way. --=20 You are receiving this mail because: You are the assignee for the bug.=