From owner-freebsd-questions@freebsd.org  Tue Oct 20 12:09:22 2020
Return-Path: <owner-freebsd-questions@freebsd.org>
Delivered-To: freebsd-questions@mailman.nyi.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1])
 by mailman.nyi.freebsd.org (Postfix) with ESMTP id 3CE3742F8CB
 for <freebsd-questions@mailman.nyi.freebsd.org>;
 Tue, 20 Oct 2020 12:09:22 +0000 (UTC)
 (envelope-from freebsd@jschneider.net)
Received: from slave.jschneider.net (slave.jschneider.net [46.235.226.89])
 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
 key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest
 SHA256) (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 4CFsqj3Ryfz4Fj6
 for <freebsd-questions@freebsd.org>; Tue, 20 Oct 2020 12:09:21 +0000 (UTC)
 (envelope-from freebsd@jschneider.net)
X-Disposition: Mostly harlmess; Tue, 20 Oct 2020 13:09:07 +0100
From: Jon Schneider <freebsd@jschneider.net>
Subject: Pool space inconsistency
To: freebsd-questions@freebsd.org
Message-ID: <76ce98a6-f561-a997-7512-d2ce96f250bb@jschneider.net>
Date: Tue, 20 Oct 2020 13:09:00 +0100
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101
 Thunderbird/68.12.1
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Language: en-GB
Content-Transfer-Encoding: 7bit
X-Rspamd-Queue-Id: 4CFsqj3Ryfz4Fj6
X-Spamd-Bar: --
Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none;
 spf=pass (mx1.freebsd.org: domain of freebsd@jschneider.net designates
 46.235.226.89 as permitted sender) smtp.mailfrom=freebsd@jschneider.net
X-Spamd-Result: default: False [-2.54 / 15.00]; ARC_NA(0.00)[];
 NEURAL_HAM_MEDIUM(-0.86)[-0.862]; FROM_HAS_DN(0.00)[];
 TO_MATCH_ENVRCPT_ALL(0.00)[];
 R_SPF_ALLOW(-0.20)[+ip4:46.235.226.89];
 MIME_GOOD(-0.10)[text/plain]; TO_DN_NONE(0.00)[];
 DMARC_NA(0.00)[jschneider.net]; RCPT_COUNT_ONE(0.00)[1];
 NEURAL_HAM_LONG(-0.99)[-0.995];
 NEURAL_HAM_SHORT(-0.38)[-0.378]; RCVD_COUNT_ZERO(0.00)[0];
 FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[];
 MIME_TRACE(0.00)[0:+];
 ASN(0.00)[asn:44684, ipnet:46.235.224.0/21, country:GB];
 MID_RHS_MATCH_FROM(0.00)[];
 MAILMAN_DEST(0.00)[freebsd-questions]
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.33
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: Tue, 20 Oct 2020 12:09:22 -0000

zpool list says

NAME    SIZE  ALLOC   FREE  CKPOINT  EXPANDSZ   FRAG    CAP  DEDUP 
HEALTH  ALTROOT
zroot  1.81T  1.68T   137G        -         -    45%    92%  1.00x 
ONLINE  -

whereas zfs list (and df -h) claim 79GB available.

NAME                 USED  AVAIL  REFER  MOUNTPOINT
zroot               1.68T  78.9G    88K  /zroot

How does the discrepancy between 137GB and 79GB come about ?

Perfectly default dataset arrangements with no reservations on 11.2 .

Jon