From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from magic.merlins.org ([209.81.13.136]:57664 "EHLO mail1.merlins.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753727AbaDEWVx (ORCPT ); Sat, 5 Apr 2014 18:21:53 -0400 Date: Sat, 5 Apr 2014 15:21:49 -0700 From: Marc MERLIN To: Hugo Mills , cwillu , Qu Wenruo , linux-btrfs@vger.kernel.org Subject: Re: [PATCH 24/27] btrfs-progs: Convert man page for btrfs-zero-log Message-ID: <20140405222149.GD13857@merlins.org> References: <1396427378-10487-1-git-send-email-quwenruo@cn.fujitsu.com> <1396427378-10487-25-git-send-email-quwenruo@cn.fujitsu.com> <20140404184620.GA12124@merlins.org> <20140405220203.GB13857@merlins.org> <20140405220346.GV7442@carfax.org.uk> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="sdtB3X0nJg68CQEu" In-Reply-To: <20140405220346.GV7442@carfax.org.uk> Sender: linux-btrfs-owner@vger.kernel.org List-ID: --sdtB3X0nJg68CQEu Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Apr 05, 2014 at 11:03:46PM +0100, Hugo Mills wrote: > As far as I recall, -orecovery is read-write. -oro,recovery is > read-only. Yes, we both corrected my Email at the same time :) Actually it's better/worse than that. From my notes at http://marc.merlins.org/perso/btrfs/2014-03.html#Btrfs-Tips_-Btrfs-Scrub-an= d-Btrfs-Filesystem-Repair mount -o recovery,ro (for when regular mount isn't working). Note, you have= to use ro or it will give you a misleading error: root@polgara:~# mount -o recovery /dev/mapper/crypt /mnt/mnt8 mount: /dev/mapper/crypt already mounted or /mnt/mnt8 busy root@polgara:~# mount -o recovery,ro /dev/mapper/crypt /mnt/mnt8 root@polgara:~# In other words, for me -o recovery has never worked unless I added ,ro. I'm not saying -o recovery cannot work, but when I needed it, it didn't work because likely it failed to replay the log as you say, and adding ro fixed that problem. That said, returning mount: /dev/mapper/crypt already mounted or /mnt/mnt8 busy = =20 is not ideal :) Marc --=20 "A mouse is a device used to point at the xterm you want to type in" - A.S.= R. Microsoft is to operating systems .... .... what McDonalds is to gourmet coo= king Home page: http://marc.merlins.org/ =20 --sdtB3X0nJg68CQEu Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.15 (GNU/Linux) iQCVAwUBU0CB/X4xUKZ2O+kBAQIvmgP/QOYzoZa7Q2C9Znf2LzdWGySCDWZDW5zV m7H3FH3mi7EVZ7owoD8tPArn8gFAYXJCbwIxESrKSxVODKn/X/RG/ptY1Zl/X5BU JOJOmG0khJEIbxrm8sL/47Be0tUzlwh8UzW/nAsJ2FxC+uHFhB6XpW5rklxfS8/Z rPaUASML5Qc= =YwMP -----END PGP SIGNATURE----- --sdtB3X0nJg68CQEu--