From owner-freebsd-fs@freebsd.org Tue Oct 3 05:40:47 2017 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 5C059E315A0 for ; Tue, 3 Oct 2017 05:40:47 +0000 (UTC) (envelope-from ben.rubson@gmail.com) Received: from mail-wm0-x234.google.com (mail-wm0-x234.google.com [IPv6:2a00:1450:400c:c09::234]) (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 DFE1365396 for ; Tue, 3 Oct 2017 05:40:46 +0000 (UTC) (envelope-from ben.rubson@gmail.com) Received: by mail-wm0-x234.google.com with SMTP id b189so10367855wmd.4 for ; Mon, 02 Oct 2017 22:40:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:subject:from:in-reply-to:date :content-transfer-encoding:message-id:references:to; bh=Crdp3T7pSEJ5OumuAiLUq/oHQpdO9ySZrADfi5coiXo=; b=CgHslnVRZf81stqw247PF/F7+Q50dHvsYluxkT6cef75tyonVXh3fd/g+GtDSo3h4L xhjWkH5Q7c21Z0mKWDIhSS7hQIGj4kmtfnKE2BtNg5uLiWuMyIiM6zCBz27ukqwGzvrh IYjlIOyz9lsdgHf+faXmrAbuELFoL0SdVjI/zf/4kyxY0nvh8PHiOONG+uIkQgQ1OR9J Ylkq2Ke2N3KcSLSxehpFZdHGfYU2DWGYyoVJbxi3deCzmFeJAnp3JU+jJUSDuUrYZ5aw SwXpLCM0D6aCVua0/kGpgqoVNBycsuyz0TbNxEfCQW/sOj0olGTZ5ihR3hkxC0Ulo/Ob udUQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date :content-transfer-encoding:message-id:references:to; bh=Crdp3T7pSEJ5OumuAiLUq/oHQpdO9ySZrADfi5coiXo=; b=jvtk/lsIRf3qjOUQdZYCyvetxidEeRLfWcnLj3deZw0t23EQokwAuxe2dOutljwmjw prJT1RxNKGnppKeMs5f5sdArFGmMmuYVd/A+uRKQaN0e4/adxfUv9HM2/RGiYvdefiV5 FcmGTTctFQeurqjLAgesYQTGGQiRdoAsmvjeYf+0tABEvFQV1kBIqjWGhFVyofnnAZGc N/GqQqPOa/O1jq/91Rxj8P9L2b+Xushbn/EoqDUfghyNOR6A/DqTp2qLwgz3HE2VWN+1 n/f9cZMD2MI7luBp345Ztgtt7R/aEsKzoxcRikzr+0rdIy4aTvdxrfhFGVbPWSUNWT5r luJA== X-Gm-Message-State: AMCzsaWfrU0QGmH3dmK6HSerO3n7QPkuCM+TxZ0/7+3qHQOiljP7KpkF ZdSMhs3H8KURIQag621Hn97Me7ro X-Google-Smtp-Source: AOwi7QDD3ZAKNf7KAQl2UvxQPxPguTz5whGldLNLn4clEYan6+fzKcauQWrIAOQtBlQk2KzztrX4kg== X-Received: by 10.28.125.139 with SMTP id y133mr3497051wmc.25.1507009245230; Mon, 02 Oct 2017 22:40:45 -0700 (PDT) Received: from bens-mac.home (LFbn-MAR-1-445-220.w2-15.abo.wanadoo.fr. [2.15.38.220]) by smtp.gmail.com with ESMTPSA id p200sm11700213wmg.48.2017.10.02.22.40.44 for (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 02 Oct 2017 22:40:44 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) Subject: Re: ZFS stalled after some mirror disks were lost From: Ben RUBSON In-Reply-To: <84f5608e-d312-437c-3c6b-d8e5847de8bc@FreeBSD.org> Date: Tue, 3 Oct 2017 07:40:46 +0200 Content-Transfer-Encoding: quoted-printable Message-Id: References: <4A0E9EB8-57EA-4E76-9D7E-3E344B2037D2@gmail.com> <71d4416a-3454-df36-adae-34c0b70cd84e@multiplay.co.uk> <8A189756-028A-465E-9962-D0181FAEBB79@gmail.com> <5d3e1f0d-c618-afa4-7e52-819c9edf30c9@FreeBSD.org> <48D23270-1811-4E09-8AF2-5C0FEC2F9176@gmail.com> <9ff8ef2c-b445-dad3-d726-b84793c173ee@FreeBSD.org> <84f5608e-d312-437c-3c6b-d8e5847de8bc@FreeBSD.org> To: Freebsd fs X-Mailer: Apple Mail (2.3124) X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 03 Oct 2017 05:40:47 -0000 > On 02 Oct 2017, at 23:06, Andriy Gapon wrote: >=20 > Forgot to add. It would be nice to determine an owner of = spa_namespace_lock. > If you have debug symbols then it can be easily done in kgdb on the = live system: > (kgdb) p spa_namespace_lock Thank you very much Andriy for your deep analysis, much appreciated ! Unfortunately, I lost access to the server and had to recycle it :| ... I have some everyday maintenance windows on this production infra, so for sure plan is to try to reproduce the issue. I will then let you know. Thank you all again, Ben