From: Artem Blagodarenko Subject: [PATCH v2 4/4] man: add -b option to e2image Date: Thu, 16 Nov 2017 16:55:46 +0300 Message-ID: <20171116135546.9991-5-artem.blagodarenko@gmail.com> References: <20171116135546.9991-1-artem.blagodarenko@gmail.com> Cc: adilger.kernel@dilger.ca, Artem Blagodarenko To: linux-ext4@vger.kernel.org Return-path: Received: from mail-lf0-f67.google.com ([209.85.215.67]:47640 "EHLO mail-lf0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935116AbdKPNz5 (ORCPT ); Thu, 16 Nov 2017 08:55:57 -0500 Received: by mail-lf0-f67.google.com with SMTP id f125so30240197lff.4 for ; Thu, 16 Nov 2017 05:55:56 -0800 (PST) In-Reply-To: <20171116135546.9991-1-artem.blagodarenko@gmail.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: From: Artem Blagodarenko Add manual page for e2image -b option. Signed-off-by: Artem Blagodarenko --- misc/e2image.8.in | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/misc/e2image.8.in b/misc/e2image.8.in index f28a76ea..d6125bb4 100644 --- a/misc/e2image.8.in +++ b/misc/e2image.8.in @@ -11,6 +11,14 @@ e2image \- Save critical ext2/ext3/ext4 filesystem metadata to a file .B \-r|Q ] [ +.B \-b +.I superblock +] +[ +.B \-B +.I blocksize +] +[ .B \-fr ] .I device @@ -167,6 +175,22 @@ the option will prevent analysis of problems related to hash-tree indexed directories. .PP +Option +.B \-b +.I superblock +can be used to get image from partition with broken primary superblock. +The partition is copied as is including broken primary superblock. +.PP +Option +.B \-B +.I blocksize +can be used to set superblock block size. Normally, e2fsck will search +for the superblock at various different block sizes in an attempt to find +the appropriate blocksize. This search can be fooled in some cases. This +option forces e2fsck to only try locating the superblock at a particular +blocksize. If the superblock is not found, e2fsck will terminate with a +fatal error. +.PP Note that this will work even if you substitute "/dev/hda1" for another raw disk image, or QCOW2 image previously created by .BR e2image . @@ -217,6 +241,14 @@ This can be useful to write a qcow2 image containing all data to a sparse image file where it can be loop mounted, or to a disk partition. Note that this may not work with qcow2 images not generated by e2image. .PP +Options +.B \-b +.I superblock +and +.B \-B +.I blocksize +can be used same way as for raw images. +.PP .SH INCLUDING DATA Normally .B e2image -- 2.13.6 (Apple Git-96)