]
[
.B \-f
+.B \-b
+.I superblock
+]
+[
+.B \-B
+.I blocksize
+]
+[
+.B \-fr
]
.I device
.I image-file
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 .
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
static void usage(void)
{
- fprintf(stderr, _("Usage: %s [ -r|Q ] [ -f ] device image-file\n"),
+ fprintf(stderr, _("Usage: %s [ -r|Q ] [ -f ] [ -b superblock ] [ -B blocksize]"
+ "[ -fr ] device image-file\n"),
program_name);
fprintf(stderr, _(" %s -I device image-file\n"), program_name);
fprintf(stderr, _(" %s -ra [ -cfnp ] [ -o src_offset ] "
free_qcow2_image(img);
}
-static void write_raw_image_file(ext2_filsys fs, int fd, int type, int flags)
+static void write_raw_image_file(ext2_filsys fs, int fd, int type, int flags,
+ blk64_t superblock)
{
struct process_block_struct pb;
struct ext2_inode inode;
}
}
+ if (superblock) {
+ int j;
+
+ ext2fs_mark_block_bitmap2(meta_block_map, superblock);
+ meta_blocks_count++;
+
+ /*
+ * Mark the backup superblock descriptors
+ */
+ for (j = 0; j < fs->desc_blocks; j++) {
+ ext2fs_mark_block_bitmap2(meta_block_map,
+ ext2fs_descriptor_block_loc2(fs, superblock, j));
+ }
+ meta_blocks_count += fs->desc_blocks;
+ }
+
mark_table_blocks(fs);
if (show_progress)
fprintf(stderr, "%s", _("Scanning inodes...\n"));
int ignore_rw_mount = 0;
int check = 0;
struct stat st;
+ blk64_t superblock = 0;
+ int blocksize = 0;
#ifdef ENABLE_NLS
setlocale(LC_MESSAGES, "");
if (argc && *argv)
program_name = *argv;
add_error_table(&et_ext2_error_table);
- while ((c = getopt(argc, argv, "nrsIQafo:O:pc")) != EOF)
+ while ((c = getopt(argc, argv, "b:B:nrsIQafo:O:pc")) != EOF)
switch (c) {
+ case 'b':
+ superblock = strtoull(optarg, NULL, 0);
+ break;
+ case 'B':
+ blocksize = strtoul(optarg, NULL, 0);
+ break;
case 'I':
flags |= E2IMAGE_INSTALL_FLAG;
break;
"with raw or QCOW2 images."));
exit(1);
}
+ if (superblock && !img_type) {
+ com_err(program_name, 0, "%s", _("-b option can only be used "
+ "with raw or QCOW2 images."));
+ exit(1);
+ }
if ((source_offset || dest_offset) && img_type != E2IMAGE_RAW) {
com_err(program_name, 0, "%s",
_("Offsets are only allowed with raw images."));
}
}
sprintf(offset_opt, "offset=%llu", source_offset);
- retval = ext2fs_open2(device_name, offset_opt, open_flag, 0, 0,
- unix_io_manager, &fs);
+ retval = ext2fs_open2(device_name, offset_opt, open_flag,
+ superblock, blocksize, unix_io_manager, &fs);
if (retval) {
com_err (program_name, retval, _("while trying to open %s"),
device_name);
exit(1);
}
if (img_type)
- write_raw_image_file(fs, fd, img_type, flags);
+ write_raw_image_file(fs, fd, img_type, flags, superblock);
else
write_image_file(fs, fd);