From owner-freebsd-questions@freebsd.org Tue Apr 21 05:42:07 2020 Return-Path: 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 B1F022C0917 for ; Tue, 21 Apr 2020 05:42:07 +0000 (UTC) (envelope-from vas@sibptus.ru) Received: from admin.sibptus.ru (admin.sibptus.ru [IPv6:2001:19f0:5001:21dc::10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 495srt5vWHz3K3P for ; Tue, 21 Apr 2020 05:42:06 +0000 (UTC) (envelope-from vas@sibptus.ru) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sibptus.ru; s=20181118; h=Message-ID:Subject:To:From:Date:In-Reply-To; bh=G8R1aH9gCJ7z0dLqtijwVTCIH6KOiAEcbyLR3qCmzwk=; b=HqOE4WEr43ChzJqZENB7oo8DQx TtKWi15m1eEaEBGfr4RpbgT+rfnS4dn25FAz+E9LBZ+dZ74+FcwBBbrNE0POJ0NNY781cs5y3Okjy 1QCDcSes1Li1Wuz3DZ7q+/9d1lPh1yAWYArExF4RaGHi6PgtuAqJiileQlby2TZP5QtU=; Received: from vas by admin.sibptus.ru with local (Exim 4.93.0.4 (FreeBSD)) (envelope-from ) id 1jQlfT-000Ppv-G7 for freebsd-questions@freebsd.org; Tue, 21 Apr 2020 12:41:59 +0700 Date: Tue, 21 Apr 2020 12:41:59 +0700 From: Victor Sudakov To: freebsd-questions@freebsd.org Subject: ZFS used space (mis)calculation? Message-ID: <20200421054159.GA99203@admin.sibptus.ru> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="jI8keyz6grp/JLjh" Content-Disposition: inline X-PGP-Key: http://admin.sibptus.ru/~vas/ X-PGP-Fingerprint: 10E3 1171 1273 E007 C2E9 3532 0DA4 F259 9B5E C634 X-Rspamd-Queue-Id: 495srt5vWHz3K3P X-Spamd-Bar: ------- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=sibptus.ru header.s=20181118 header.b=HqOE4WEr; dmarc=pass (policy=none) header.from=sibptus.ru; spf=pass (mx1.freebsd.org: domain of vas@sibptus.ru designates 2001:19f0:5001:21dc::10 as permitted sender) smtp.mailfrom=vas@sibptus.ru X-Spamd-Result: default: False [-7.36 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; R_DKIM_ALLOW(-0.20)[sibptus.ru:s=20181118]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+mx]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.20)[multipart/signed,text/plain]; TO_DN_NONE(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; RCPT_COUNT_ONE(0.00)[1]; RCVD_TLS_LAST(0.00)[]; DKIM_TRACE(0.00)[sibptus.ru:+]; DMARC_POLICY_ALLOW(-0.50)[sibptus.ru,none]; SIGNED_PGP(-2.00)[]; FROM_EQ_ENVFROM(0.00)[]; SUBJECT_ENDS_QUESTION(1.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; ASN(0.00)[asn:20473, ipnet:2001:19f0:5000::/38, country:US]; RCVD_COUNT_TWO(0.00)[2]; IP_SCORE(-3.26)[ip: (-9.89), ipnet: 2001:19f0:5000::/38(-4.94), asn: 20473(-1.40), country: US(-0.05)] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 21 Apr 2020 05:42:07 -0000 --jI8keyz6grp/JLjh Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Dear Colleagues, How can it happen that the sum total of all space occupied by snapshots does not equal USEDSNAP? 130+21.4+20.2+19.8=3D191.4, not 219G. Where are my missing 150G ? Please look (a complete picture, nothing redacted): # zfs list -t all -o space NAME AVAIL USED USEDSNAP USEDDS = USEDREFRESERV USEDCHILD fastdrive 371G 784G 52K 23K = 0 784G fastdrive@2020-04-17_00.05.00--5d - 13K - - = - - fastdrive@2020-04-17_12.05.00--5d - 0 - - = - - fastdrive@2020-04-18_00.05.00--5d - 0 - - = - - fastdrive@2020-04-18_12.05.00--5d - 0 - - = - - fastdrive@2020-04-19_00.05.00--5d - 0 - - = - - fastdrive@2020-04-19_12.05.00--5d - 0 - - = - - fastdrive@2020-04-20_00.05.00--5d - 0 - - = - - fastdrive@2020-04-20_12.05.00--5d - 0 - - = - - fastdrive/pg_data 371G 783G 219G 565G = 0 0 fastdrive/pg_data@2020-04-19_00.05.00--5d - 130G - - = - - fastdrive/pg_data@2020-04-19_12.05.00--5d - 21.4G - - = - - fastdrive/pg_data@2020-04-20_00.05.00--5d - 20.2G - - = - - fastdrive/pg_data@2020-04-20_12.05.00--5d - 19.8G - - = - - --=20 Victor Sudakov, VAS4-RIPE, VAS47-RIPN 2:5005/49@fidonet http://vas.tomsk.ru/ --jI8keyz6grp/JLjh Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEcBAEBAgAGBQJenoenAAoJEA2k8lmbXsY0u8gIAJlsjJYEPC8jjrngDEbGtc4G a8TMSzW6kyy+mHHrVIREq9/sQMvC50RxRTaWKJceVjVi8uY/QoA9wtq8OhMkJW84 /X3bi4sp5r4OvIloj5Jos3RBT0kPyHq73TJ+N0MqlfaqclqtCC3Zu53O2TrtU7iX GPhIimK6j4v5y4OgEa52vOl7rTE+Ot+m58oq9CzX2OJQXLdhgUgfXMITPSsecMcK 0mRDoQ+iTLz26WOGFdw6WLl3uo0GOrUWkxjm9h3bH+HGeWzddaKA6ym5ty5WlIjP IuwkyeRVZm+7RIR5DlIzogBmNPD5gsc66fh4CrBeOsePuQENeYV3FAbmm9hQsW4= =j4v4 -----END PGP SIGNATURE----- --jI8keyz6grp/JLjh--