From owner-svn-src-projects@freebsd.org Thu Dec 17 16:02:07 2015 Return-Path: Delivered-To: svn-src-projects@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 C485EA49010 for ; Thu, 17 Dec 2015 16:02:07 +0000 (UTC) (envelope-from asomers@gmail.com) Received: from mail-oi0-x232.google.com (mail-oi0-x232.google.com [IPv6:2607:f8b0:4003:c06::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 9BCA7154D; Thu, 17 Dec 2015 16:02:04 +0000 (UTC) (envelope-from asomers@gmail.com) Received: by mail-oi0-x232.google.com with SMTP id o124so45002210oia.1; Thu, 17 Dec 2015 08:02:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=uvI9xa02AeoIyUmh8TCDcfkbiu6qq0GXBsq13KvoJ9Y=; b=mftch55GAeBhvny42jRX0hhTzz0n6bu9v8LoID3fmu+pv/09zqF5jRUvrfB35tZ/BB y0MTfZUM5OPe1SaDuNGgPs7slz+Ub7CC4CouqUVnPkaDfzG5GIuqezxQAjsy6wRpcn3n io2PqwxkyCbt1m/xaHz2guMT2mtWECELFnKRLTFfcbyyvJN8aIR4Ur3OYfsGR2Keb8uw JVdSBIoM1gkWJUTZ8YopqClkZ9FUsrFxn748LgbkS4yIM99iumXIF4Lsl5yibxz1TxOM xk/p3WDLC5vbORI+cGW8QlVWVeYrbB1mrFKgM3S9MSrwvs13VwAz0Zif9UWcRUz3hQQ7 NhMw== MIME-Version: 1.0 X-Received: by 10.202.208.65 with SMTP id h62mr11406428oig.57.1450368123752; Thu, 17 Dec 2015 08:02:03 -0800 (PST) Sender: asomers@gmail.com Received: by 10.202.69.84 with HTTP; Thu, 17 Dec 2015 08:02:03 -0800 (PST) In-Reply-To: <5671E0AA.1020102@FreeBSD.org> References: <201512161930.tBGJUiTn047536@repo.freebsd.org> <5671E0AA.1020102@FreeBSD.org> Date: Thu, 17 Dec 2015 09:02:03 -0700 X-Google-Sender-Auth: oIX_4LoAdT47ZhiAmSdhkDsQ5qE Message-ID: Subject: Re: svn commit: r292353 - projects/zfsd/head/tests/sys/cddl/zfs/tests/cli_root/zfs_set From: Alan Somers To: Andriy Gapon Cc: "src-committers@freebsd.org" , svn-src-projects@freebsd.org Content-Type: text/plain; charset=UTF-8 X-BeenThere: svn-src-projects@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "SVN commit messages for the src " projects" tree" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Dec 2015 16:02:07 -0000 On Wed, Dec 16, 2015 at 3:07 PM, Andriy Gapon wrote: > On 16/12/2015 21:30, Alan Somers wrote: >> Author: asomers >> Date: Wed Dec 16 19:30:44 2015 >> New Revision: 292353 >> URL: https://svnweb.freebsd.org/changeset/base/292353 >> >> Log: >> Disable read-only testing of space usage properties. >> >> These properties (used, available, referenced) are easily influenced by >> internal machinations in ZFS, and currently cause random failures of this >> test when run on a system running the BP workers. >> >> The test itself checks that the properties can't be changed, and goes >> farther than just asserting that the 'zfs set' command fails: it also checks >> that the property's value still matches its original value. >> >> For some reason, however, background activity causes short-term changes in >> these values, that appear not to involve either an ioctl (at least one that >> would show up in 'zpool history') or filesystem accesses. This is hopefully >> still only temporary just to get the tests passing. >> >> Submitted by: Will >> Sponsored by: Spectra Logic Corp > > FWIW, > hhttps://github.com/avg-I/openzfs/commit/e7a8782eb9ea84e6db92891dfd5a74c655d0a44a > The change is a bit lame, but better than nothing. > Interesting. We had no idea that's what was causing those properties to change. We thought it must be the result of some unknown background process.