From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cn.fujitsu.com ([59.151.112.132]:7682 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S933084AbbIDNZ5 (ORCPT ); Fri, 4 Sep 2015 09:25:57 -0400 Received: from G08CNEXCHPEKD01.g08.fujitsu.local (localhost.localdomain [127.0.0.1]) by edo.cn.fujitsu.com (8.14.3/8.13.1) with ESMTP id t84DPjs2030019 for ; Fri, 4 Sep 2015 21:25:45 +0800 From: Zhao Lei To: CC: Zhao Lei Subject: [PATCH 0/5] btrfs-progs: Introduce --extra-dev option Date: Fri, 4 Sep 2015 21:24:14 +0800 Message-ID: MIME-Version: 1.0 Content-Type: text/plain Sender: linux-btrfs-owner@vger.kernel.org List-ID: Some command in current tools can't support filesystem with multiple loop device, for example: # truncate -s 200M ./1.img # truncate -s 200M ./2.img # mkfs.btrfs -f ./1.img ./2.img # # btrfs rescue chunk-recover -v ./1.img All Devices: Device: id = 1, name = ./1.img ... # btrfs rescue super-recover -v ./1.img All Devices: Device: id = 1, name = ./1.img ... # btrfs rescue zero-log ./1.img warning devid 2 not found already Clearing log on ./1.img, previous log_root 0, level 0 ... As a workaround, we can bind all of above image files to loop device, but to make things simple, this patch introduce --extra-dev option, to specify non-block-device manually, as: # btrfs rescue chunk-recover -v --extra-device=./2.img ./1.img All Devices: Device: id = 2, name = ./2.img Device: id = 1, name = ./1.img ... # btrfs rescue super-recover --extra-dev=./2.img -v ./1.img All Devices: Device: id = 2, name = ./2.img Device: id = 1, name = ./1.img ... # btrfs rescue zero-log --extra-dev=./2.img ./1.img Clearing log on ./1.img, previous log_root 0, level 0 We can add multiple extra-dev by: --extra-dev="1.img,2.img" or --extra-dev=1.img --extra-dev=2.img Zhao Lei (5): btrfs-progs: Introduce --extra-dev option btrfs-progs: Support extra-dev for btrfs rescue btrfs-progs: Avoid using uninitialized optind in cmd_rescue_zero_log btrfs-progs: add help command to btrfs rescue zero-log btrfs-progs: update manual for --extra-dev and -h for btrfs rescue Documentation/btrfs-rescue.asciidoc | 13 ++++++- cmds-rescue.c | 39 +++++++++++++++++---- utils.c | 70 +++++++++++++++++++++++++++++++++++++ utils.h | 5 +++ 4 files changed, 119 insertions(+), 8 deletions(-) -- 1.8.5.1