From owner-freebsd-questions@freebsd.org  Thu Oct  8 21:37:46 2015
Return-Path: <owner-freebsd-questions@freebsd.org>
Delivered-To: freebsd-questions@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 D0D609D2404
 for <freebsd-questions@mailman.ysv.freebsd.org>;
 Thu,  8 Oct 2015 21:37:46 +0000 (UTC)
 (envelope-from aurfalien@gmail.com)
Received: from mail-pa0-x22b.google.com (mail-pa0-x22b.google.com
 [IPv6:2607:f8b0:400e:c03::22b])
 (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 A03526E
 for <freebsd-questions@freebsd.org>; Thu,  8 Oct 2015 21:37:46 +0000 (UTC)
 (envelope-from aurfalien@gmail.com)
Received: by padhy16 with SMTP id hy16so65343716pad.1
 for <freebsd-questions@freebsd.org>; Thu, 08 Oct 2015 14:37:46 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113;
 h=content-type:mime-version:subject:from:in-reply-to:date:cc
 :message-id:references:to;
 bh=CiOPAq2DGSBApO8Wp58adsTNJtPZJtIsCKjflLGPKlo=;
 b=Z3z1r0bErpnbiqPQKBM1jhGJFkyf2LZXjmFNG2hP9qROZAmxZSrJXzMpEEebNJWOjH
 vWgs2bjkxi4ZCwaF15MVKY9SsD6wxu7eVNyp3o+APLmueC4vmg/lWsjO6bQq4/4e7De/
 ffmwK8+u/r2fta+BpG6220JL4PKearKd5JoGLfvrbfUrniELqGlpZmBFT33jZNDRjNOK
 fq3T6ubjOrO7I16DQHdprh7i2gDqrGqelJYLTVZ+tpvLGVt4rXiRn+MbL3SEcdWbwPLe
 ZMY3NFs8s/SHTCmK2Eqk28rJbLww9VDMdVFPY3VKwSsqtcyC3WCAnIo67xApjdN/77NV
 Saxg==
X-Received: by 10.68.114.196 with SMTP id ji4mr10703329pbb.46.1444340266185;
 Thu, 08 Oct 2015 14:37:46 -0700 (PDT)
Received: from briankrusicw.logan.tv ([64.17.255.138])
 by smtp.gmail.com with ESMTPSA id a17sm47305173pbu.55.2015.10.08.14.37.45
 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128);
 Thu, 08 Oct 2015 14:37:45 -0700 (PDT)
Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\))
Subject: Re: ZFS best resilver settings?
From: aurfalien <aurfalien@gmail.com>
In-Reply-To: <alpine.LRH.2.11.1510081456070.1441@sas1.nber.org>
Date: Thu, 8 Oct 2015 14:37:44 -0700
Cc: Quartz <quartz@sneakertech.com>,
 freebsd-questions@freebsd.org
Message-Id: <73826D15-EDEA-495A-B1A4-C8994F427418@gmail.com>
References: <5615D856.4000801@sneakertech.com> <56161935.9040405@FreeBSD.org>
 <5616565B.8030802@sneakertech.com>
 <B24E3B09-C7E2-4183-8C9C-682544F4E836@gmail.com>
 <alpine.LRH.2.11.1510081456070.1441@sas1.nber.org>
To: Daniel Feenberg <feenberg@nber.org>
X-Mailer: Apple Mail (2.1878.6)
Content-Type: text/plain;
	charset=windows-1252
Content-Transfer-Encoding: quoted-printable
X-Content-Filtered-By: Mailman/MimeDel 2.1.20
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-questions>, 
 <mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions/>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
 <mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 08 Oct 2015 21:37:46 -0000

Forgot, to also help scrub times I set vdev cache max and size to 16M.

This should=92t effect silvering times but who knows?  Any body?


- aurf

"Janitorial Services"

On Oct 8, 2015, at 11:59 AM, Daniel Feenberg <feenberg@nber.org> wrote:

>=20
>=20
> On Thu, 8 Oct 2015, aurfalien wrote:
>=20
>> These settings help quicken my resilver times;
>>=20
>> vfs.zfs.resilver_delay		0
>> vfs.zfs.resilver_min_time_ms	5000
>>=20
>> Also I check the disks regularly via cron and have this set;
>>=20
>> vfs.zfs.scrub_delay			0
>>=20
>=20
> Can I ask how long a relivering takes? We are seeing 8 days for a 3TB =
drive that is in modest use and wonder if that is to be expected.
>=20
> daniel feenberg
>=20