From owner-freebsd-fs@freebsd.org Mon Oct 2 18:15:33 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 8D476E23727 for ; Mon, 2 Oct 2017 18:15:33 +0000 (UTC) (envelope-from killing@multiplay.co.uk) Received: from mail-wm0-x232.google.com (mail-wm0-x232.google.com [IPv6:2a00:1450:400c:c09::232]) (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 25841717B0 for ; Mon, 2 Oct 2017 18:15:32 +0000 (UTC) (envelope-from killing@multiplay.co.uk) Received: by mail-wm0-x232.google.com with SMTP id m72so8367958wmc.0 for ; Mon, 02 Oct 2017 11:15:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=multiplay-co-uk.20150623.gappssmtp.com; s=20150623; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language; bh=UeFmkcbursTrR2EQNB5Gbf5DgYjFo8neTqL9gshDn68=; b=UGBWoeI5oXAQxZeN6/Z+Uc1gk10MnDowQncaBl8iwiGdJlA1YOBl37REeXWjOfaiBd WD99BtORPPL1fr0Cci4SkWiFZ4UqwUliL4aeoePLTfOBaCtKAoIfyA0ox9JCs3iWUInw e3KBHB6dH0gvKa8ICP+Bm20gZ8/kVXJyh5Ahv9PyNq0CnwNzgkHSuC7DEOi8oAaXrXd/ tq4FY9kvCknUo2jUILhU56KzyscFB0BlFr9VFserAZ1gHNG5jm8IvNaTKg1h0I78JQVu dYxCfF6SMGDNmJ+HtBQrqd2X/oG20eKn4di9cXjpWqa8DoV8tZ5A07l70d+n0+dj0bMa Z9fQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language; bh=UeFmkcbursTrR2EQNB5Gbf5DgYjFo8neTqL9gshDn68=; b=Y0lfDd7zl87ERrho2njRfhlXr5ImaMnu8n9q7E1tHdGVh1r4l+U6pkD02GFwlKMXWJ yytAY8C5rTXb8GaxIor0Bh5l0gi6Ea0MnEHSv4gNs2oS11RRA4ex8D1cBXTX2xSVNplC zK/L6CPHDONQjjYXF3AHjLjUMCEMxim8eF1X4WNV+h9k8PIgOAuTthm3ozatkLnPzVFa ylbSd3DrAokCDcBd6xDn0gFgkAbtYN2HvFtlArZF63vRY7OgHCsPEIzBcXyWQMP3Vmql xRRUsOVILQnkusC8YqSrhOPGtAR/LPcuyxBUCqpU+dwMAJnmZQw6A1ufuga5V/+ljmUZ Pecw== X-Gm-Message-State: AHPjjUj8RyRx7O8gXAf3htFTMSTipkz2GVMBgsWqF3DBCcKfYUnm+Bfn 1YWQPPN0o/pjahhsTWAKZka6YDcGS70= X-Google-Smtp-Source: AOwi7QCS/D3eiDKjqVnjGgHfXyFZeYZNOQw/CU/JtL6xJ+B7l5S4GSi/zSicWiCvEAt9QqpJ2tABZQ== X-Received: by 10.28.148.203 with SMTP id w194mr10636276wmd.91.1506968130721; Mon, 02 Oct 2017 11:15:30 -0700 (PDT) Received: from [10.10.1.111] ([185.97.61.1]) by smtp.gmail.com with ESMTPSA id n14sm6925840wrg.38.2017.10.02.11.15.29 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 02 Oct 2017 11:15:29 -0700 (PDT) Subject: Re: ZFS stalled after some mirror disks were lost To: freebsd-fs@freebsd.org References: <4A0E9EB8-57EA-4E76-9D7E-3E344B2037D2@gmail.com> From: Steven Hartland Message-ID: <71d4416a-3454-df36-adae-34c0b70cd84e@multiplay.co.uk> Date: Mon, 2 Oct 2017 19:15:30 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 MIME-Version: 1.0 In-Reply-To: <4A0E9EB8-57EA-4E76-9D7E-3E344B2037D2@gmail.com> Content-Language: en-US Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Content-Filtered-By: Mailman/MimeDel 2.1.23 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: Mon, 02 Oct 2017 18:15:33 -0000 What does zpool status report when you have disconnected the iscsi targets? On 02/10/2017 19:12, Ben RUBSON wrote: > Hi, > > On a FreeBSD 11 server, the following online/healthy zpool : > > home > mirror-0 > label/local1 > label/local2 > label/iscsi1 > label/iscsi2 > mirror-1 > label/local3 > label/local4 > label/iscsi3 > label/iscsi4 > cache > label/local5 > label/local6 > > A sustained read throughput of 180 MB/s, 45 MB/s on each iscsi disk > according to "zpool iostat", nothing on local disks (strange but I > noticed that IOs always prefer iscsi disks to local disks). > No write IOs. > > Let's disconnect all iSCSI disks : > iscsictl -Ra > > Expected behavior : > IO activity flawlessly continue on local disks. > > What happened : > All IOs stalled, server only answers to IOs are made to its zroot pool. > All commands related to the iSCSI disks (iscsictl), or to ZFS (zfs/zpool), > don't return. > > Questions : > Why this behavior ? > How to know what happens ? (/var/log/messages says almost nothing) > > I already disconnected the iSCSI disks without any issue in the past, > several times, but there were almost no IOs running. > > Thank you for your help ! > > Ben > > _______________________________________________ > freebsd-fs@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org"