From owner-freebsd-bugs@freebsd.org Tue Jul 12 09:32:25 2016 Return-Path: Delivered-To: freebsd-bugs@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 67152B90252 for ; Tue, 12 Jul 2016 09:32:25 +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 mx1.freebsd.org (Postfix) with ESMTPS id 3CF6011A8 for ; Tue, 12 Jul 2016 09:32:25 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id u6C9WPUu080991 for ; Tue, 12 Jul 2016 09:32:25 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 211028] [GEOM][Hyper-V] gpart can't detect the new free space after the disk capacity changes Date: Tue, 12 Jul 2016 09:32:25 +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 Some People X-Bugzilla-Who: decui@microsoft.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-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: 2.1.22 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Jul 2016 09:32:25 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D211028 Bug ID: 211028 Summary: [GEOM][Hyper-V] gpart can't detect the new free space after the disk capacity changes Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: decui@microsoft.com When testing Hyper-V's Online VHDX Resize feature (refer to Bug 211000), I noticed an issue: after resizing =E2=80=9Cda1=E2=80=9D, if there was a disk= read before "camcontrol reprobe da1", gpart couldn't detect the new =E2=80=9Cfree space= ", though it could detect the new disk capacity. To reproduce the bug, we need to run FreeBSD 12-CURRENT guest on Hyper-V (we need to make sure the 2 patches mentioned by https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D211000#c4 are used to a= void the known issues) and do the following 1. This is before the disk capacity change: [root@decui-b11 ~]# gpart show da1 =3D> 63 83886017 da1 MBR (40G) 63 83886017 - free - (40G) 2. Expand the disk capacity from 40GB to 50GB by Hyper-V management tool. 3.=20 [root@decui-b11 ~]# dd if=3D/dev/da1 of=3D/dev/null bs=3D512 count=3D1 1+0 records in 1+0 records out 512 bytes transferred in 0.000715 secs (715864 bytes/sec) [root@decui-b11 ~]# gpart show da1 =3D> 63 83886017 da1 MBR (50G) 63 83886017 - free - (40G) We can see the 'free' space can't grow to 50GB. 4. This can't help: [root@decui-b11 ~]# camcontrol reprobe da1 [root@decui-b11 ~]# gpart show da1 =3D> 63 83886017 da1 MBR (50G) 63 83886017 - free - (40G) --=20 You are receiving this mail because: You are the assignee for the bug.=