From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx2.suse.de ([195.135.220.15]:33104 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726819AbeIMVBi (ORCPT ); Thu, 13 Sep 2018 17:01:38 -0400 Subject: Re: btrfs convert problem To: Serhat Sevki Dincer , linux-btrfs@vger.kernel.org References: From: Nikolay Borisov Message-ID: Date: Thu, 13 Sep 2018 18:51:27 +0300 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Sender: linux-btrfs-owner@vger.kernel.org List-ID: On 13.09.2018 15:22, Serhat Sevki Dincer wrote: > Hi, > > I have an external usb HDD (WD my passport, just usb cable, no > external power) with a single ext4 partition occupying the whole disk > with 698 GiB capacity and 188 GiB empty space. The data on disk is not > very important. > > I also have a laptop with Manjaro 64-bit XFCE, kernel 4.14.68, > btrfs-progs v4.17.1, all packages come with Manjaro. > > I tried to convert my disk to btrfs with > sudo btrfs-convert /dev/sdb1 > I have also tried -i, -n options, all failed with: > > create btrfs filesystem: > blocksize: 4096 > nodesize: 16384 > features: extref, skinny-metadata (default) > creating ext2 image file > ERROR: failed to create ext2_saved/image: -1 -1 seems to be EPERM, is your device write-protected, readonly or something like that ? > WARNING: an error occurred during conversion, filesystem is partially > created but not finalized and not mountable > > I could not find this error/warning combo on the net. > ext4 partition seems intact and working after these attempts. > How can I debug and complete this conversion? > > Thanks.. >