From owner-freebsd-bugs@freebsd.org Mon Jul 23 12:03:03 2018 Return-Path: Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id C81D81049466 for ; Mon, 23 Jul 2018 12:03:03 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id 58A2479330 for ; Mon, 23 Jul 2018 12:03:03 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 124181049463; Mon, 23 Jul 2018 12:03:03 +0000 (UTC) Delivered-To: bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id E256C1049462 for ; Mon, 23 Jul 2018 12:03:02 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.ysv.freebsd.org (mxrelay.ysv.freebsd.org [IPv6:2001:1900:2254:206a::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 7CE897932D for ; Mon, 23 Jul 2018 12:03:02 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.ysv.freebsd.org (Postfix) with ESMTPS id C8A829AD2 for ; Mon, 23 Jul 2018 12:03:01 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id w6NC314P076253 for ; Mon, 23 Jul 2018 12:03:01 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id w6NC31cW076242 for bugs@FreeBSD.org; Mon, 23 Jul 2018 12:03:01 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 229977] geom/gpart does not care about GPT size, silently creates partitions that won't be persisted after reboot Date: Mon, 23 Jul 2018 12:03:01 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: greg@unrelenting.technology X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Jul 2018 12:03:04 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D229977 Bug ID: 229977 Summary: geom/gpart does not care about GPT size, silently creates partitions that won't be persisted after reboot Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: greg@unrelenting.technology So I've been trying to depenguinate a VPS that doesn't allow additional dri= ves to be mounted. pivot_root into a tmpfs on Linux, dd the FreeBSD memstick im= age onto the disk, reboot into the installer, partition using shell, gpart reco= ver (to move backup GPT to the end), gpart add, zpool create, etc. etc., instal= l, reboot. Oops, no ZFS pools found. Booting into the installer again, and that third GPT partition I created simply does not exist! Turns out the partition table size is limited to 2 entries. Linux's gdisk utility is smart: trying to create a partition results in an error: "No table partition entries left". While geom/gpart did not check the size and just created a partition that actually silently was not saved!! Using expert mode in gdisk, I resized the partition table from 2 entries to= 4 (using 128 results in "Main partition table overlaps the first partition by= 31 blocks! Try reducing the partition table size by 124 entries.", but hey, 4 = is enough for the VPS.) And everything worked fine. Other people have stumbled upon this before: https://lists.freebsd.org/pipermail/freebsd-questions/2018-January/280562.h= tml --=20 You are receiving this mail because: You are the assignee for the bug.=