(in the spirit of open source, directed back to the list) On Wed, 8 Jul 2009 14:51:55 +0000 (GMT), Stephen C. Bond wrote:
>Kees, > > can you provide an example of how to read from dd > cylinder by cylinder or even better by exact coordinates? That's hard to do, many disks don't tell you the real geometry. dd if=/dev/rdsk/cXtYdZsB of=output_file_name\ bs=block_size \ skip=nr_of_blocks_to_skip \ count=nr_of_blocks_to_copy > also if a file is fragmented is there a marker at the > end of the first piece telling where is the second? No. That kind of information is kept in the zfs administrative blocks. You'll have to study the on-disk format to get that kind of info. http://opensolaris.org/os/community/zfs/docs/ondiskformatfinal.pdf http://blogs.sun.com/storage/en_US/entry/examining_zfs_on_disk_format The zdb utility (zfs debugging tool) might be of help as well. >Thank you >Stephen C. Bond -- ( Kees Nuyt ) c[_] _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
