There was a discussion about possibility of using superblock backup for creating images with e2image. https://www.spinics.net/lists/linux-ext4/msg30583.html Now our customer faced with situation then it would be useful to have image file from partition with broken superblock. Here is set of patches that adds this functionality. This is third version of the patch set. Changes since v2: * Moved ext2fs_try_open_fs() deletions * automatically try to open the backup superblocks * Options are sorted in alphabetical order * run_e2fsck is used for test * manual is added into the patch that adds this option Artem Blagodarenko (4): ext2fs: opening filesystem code refactoring e2image: add -b option to use supperblock backup tests: add test for e2image -b option ext2fs: automaticlly open backup superblocks e2fsck/e2fsck.h | 2 - e2fsck/message.c | 3 +- e2fsck/unix.c | 44 +++++-------- e2fsck/util.c | 73 --------------------- lib/ext2fs/ext2fs.h | 8 +++ lib/ext2fs/openfs.c | 152 +++++++++++++++++++++++++++++++++++++++++++- misc/dumpe2fs.c | 17 +---- misc/e2image.8.in | 32 ++++++++++ misc/e2image.c | 50 +++++++++++++-- tests/i_zero_super/expect.1 | 22 +++++++ tests/i_zero_super/image.gz | Bin 0 -> 13262 bytes tests/i_zero_super/script | 11 ++++ 12 files changed, 288 insertions(+), 126 deletions(-) create mode 100644 tests/i_zero_super/expect.1 create mode 100644 tests/i_zero_super/image.gz create mode 100644 tests/i_zero_super/script -- 2.13.6 (Apple Git-96)
