From owner-freebsd-fs@freebsd.org Wed Dec 16 13:13:09 2015 Return-Path: Delivered-To: freebsd-fs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 9B3DDA48A36 for ; Wed, 16 Dec 2015 13:13:09 +0000 (UTC) (envelope-from bengta@sics.se) Received: from mail-lf0-x22e.google.com (mail-lf0-x22e.google.com [IPv6:2a00:1450:4010:c07::22e]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4F5462E03 for ; Wed, 16 Dec 2015 13:13:09 +0000 (UTC) (envelope-from bengta@sics.se) Received: by mail-lf0-x22e.google.com with SMTP id y184so28802342lfc.1 for ; Wed, 16 Dec 2015 05:13:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sics-se.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:in-reply-to:references:user-agent:date :message-id:mime-version:content-type; bh=5Kxkj2VKOx0kXbf3W7xj0nQkiItTm0BmAq35sb0NrUo=; b=VUkY02bMisV1lmxXD2vwIt+uVYXO5IjWdoUhIiR9ckNK3b52zkI6rFjdJXmyhJom8P QEifH/LqocN2p+NRndFBHQPseZU+k5IvB30hfsgCcu8qZCOFgwY0yu4rSA76ELPahNWb bhjzjs+dt//N+6KtMSuvhAiEWuGUCa38I6CZQTJmz/8vcW+JAnX5k+gwhvYQcw9u8RrK bL30yT/D/NZsdAjiXw3+9nF8k9bhfDn5gJ7b5/ZrnJJSRaaqaj7yi38gfdjs0LFFmpaq EKDjgY3v8ZceolR2mhjnKI0kHEdlOxsTnTB5z6IZx/KKWr5M+MVTtaG13aQnEIhmcNBs BIBg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:in-reply-to:references :user-agent:date:message-id:mime-version:content-type; bh=5Kxkj2VKOx0kXbf3W7xj0nQkiItTm0BmAq35sb0NrUo=; b=eQRjDdmoKusyW1cNc058klOIkq4uhdjVMsDxPKKonpvQjuLFHNhxjTLi3TkVr6ZKO4 1OV2/HbPhb5RtHJ8L2tmunnf/NaFHEQTNBnMQWhjRplWEOvQzq28Cff5FxlibMoTYGwr k1eGNa+/jDswxFODjhwGKqzurXJptE2AV5u+f0gjz3U23WS1NIKLpZDA5Q5h+ROqbK+x DEu3NG6vpeDOI4n8CcGqdSP3qoDcQyyNnOEzGGYTTcqkKNMpqRKJRmtGwjzI5zU5TMIn HofeLo1OJEsGpiqcbJAZnPwjQTlbjJKMmmvERw0UosEGCIZlIdD/C0FN0B97Iklms46T dOpA== X-Gm-Message-State: ALoCoQkRYgJ2xFy5uLcPPyXtdDDfiVZ7qxNZ7wm07esjOBPD2Z0OWNgYkIh1kUHJH1NXRzAwml6qM1tBxbSJMG8iJKrv2jXNsQ== X-Received: by 10.25.147.84 with SMTP id v81mr18371338lfd.119.1450268108047; Wed, 16 Dec 2015 04:15:08 -0800 (PST) Received: from P142s.sics.se (P142s.sics.se. [193.10.66.127]) by smtp.gmail.com with ESMTPSA id xt2sm917413lbb.47.2015.12.16.04.15.07 (version=TLS1 cipher=AES128-SHA bits=128/128); Wed, 16 Dec 2015 04:15:07 -0800 (PST) Received: from P142s.sics.se (localhost [127.0.0.1]) by P142s.sics.se (8.15.2/8.15.2) with ESMTP id tBGCEUMZ003758; Wed, 16 Dec 2015 13:14:30 +0100 (CET) (envelope-from bengta@P142s.sics.se) Received: (from bengta@localhost) by P142s.sics.se (8.15.2/8.15.2/Submit) id tBGCET9Y003757; Wed, 16 Dec 2015 13:14:29 +0100 (CET) (envelope-from bengta@P142s.sics.se) From: Bengt Ahlgren To: Andriy Gapon Cc: Steven Hartland , freebsd-fs@FreeBSD.org Subject: Re: ZFS hang in zfs_freebsd_rename In-Reply-To: <56714344.1070908@FreeBSD.org> (Andriy Gapon's message of "Wed, 16 Dec 2015 12:56:04 +0200") References: <567022FB.1010508@multiplay.co.uk> <56714344.1070908@FreeBSD.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (berkeley-unix) Date: Wed, 16 Dec 2015 13:14:29 +0100 Message-ID: MIME-Version: 1.0 Content-Type: text/plain X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 16 Dec 2015 13:13:09 -0000 Andriy Gapon writes: > On 15/12/2015 16:52, Bengt Ahlgren wrote: >> So this is likely fixed then in 10.x? > > No and neither in head / current. We haven't had any fixes in ZFS<->VFS code > for quite a long while. > And this is a FreeBSD-specific problem. zfs_rename() does not behave as > VOP_RENAME should do with respect to the vnode locking. OK, good to know. I assume this means that it would be beneficial to extract more information if this deadlock happens again, regardless of whether or not I have had the time to upgrade to 10.x. Bengt