From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from attic.omnifarious.org ([206.124.142.227]:38144 "EHLO attic.omnifarious.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755769Ab3AOUya (ORCPT ); Tue, 15 Jan 2013 15:54:30 -0500 Date: Tue, 15 Jan 2013 12:44:36 -0800 From: hopper@omnifarious.org To: linux-btrfs@vger.kernel.org Subject: Rendering a btrfs filesystem unmountable with the btrfs command Message-ID: <20130115204436.GC18291@omnifarious.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="Xm/fll+QQv+hsKip" Sender: linux-btrfs-owner@vger.kernel.org List-ID: --Xm/fll+QQv+hsKip Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable mkfs.btrfs /dev/sdb mkdir /tmp/mnt mount /dev/sdb /tmp/mnt cd /tmp/mnt btrfs quota enable . btrfs subvol create foo btrfs qgroup create 1/0 btrfs qgroup assign 0/257 1/0 btrfs subvol snapshot foo bar btrfs qgroup assign 0/258 1/0 cd .. umount /dev/sdb mount /dev/sdb /tmp/mnt # Still mountable! cd mnt btrfs qgroup destroy 1/0 cd .. umount /dev/sdb mount /dev/sdb /tmp/mnt # Oops, no longer mountable, even in recovery mode! Help! BTW, I'm not a mailing list subscriber. Thanks, --=20 "They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety." -- Benjanmin Franklin -- Eric Hopper (http://www.omnifarious.org/~hopper) -- --Xm/fll+QQv+hsKip Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQGcBAEBCAAGBQJQ9b+0AAoJEA0oytveg7KquHUMAIhsX3zrbY/UJbGHvf1AHWtu Di3RRNnTKp+SO830twS8wVPdAexb7kr/0zy3iNAkrnQWYI/ghsLebvZCea77PQ3E 9pbtRTTXHs4aKhDtG2TSOlx2KN/DSFAi0+hhPJyhcpZPvYzHL0+8d2xeHilAw1ZX ljmywM1hdSjXcqs1ckIBGzLA/BF9xVYUWII/NwriBZRACcR4FwCWQlFFhN3tH0wj Ui2YTnuq40y5S+YiI1y1dvr1/hhWisrtaPo2JRXWOumWGMMc2Vj6j6cwl74eYduB wN1871Z6LdllVR8QWN5B9b0pjbi0ZQJJLgAl0e5qMAbqD3coyhI5y0YoOWZT0aQ3 GAlhtZOqNkqWH9e4qP8QHIpQBTOqarZmesMlMbp68VcvFTu9oT4Xgy5HZLJoMW3A 9TtXHCvNwBAPWVQPxn66VK1PWsZ8K3V7Dc/6ckCrKOOCX3lzKBcqu9KNLOlxHRZ0 4TRt5BftAlcew2+e0wBoucEvMx1hZJAKsvennZjBrA== =tEaR -----END PGP SIGNATURE----- --Xm/fll+QQv+hsKip--