cswiger at mac.com
Sat May 10 11:25:12 PDT 2003
Paul English wrote:
[ ... ]
> It wants to have fsck run - if I do that with fsck -y it will
> clean the filesystem, and mount, but *everything* (all 15GB) is in
fsck should be able to salvage some of the existing directory structure
under /lost+found; are you getting a single directory full of
inode-#-named files without any subdirectories?
> If I just restore the superblock with fsck, and don't do
> anything else, then I can mount the filesystem readonly, but then when I
> mount it there is nothing there:
> #ls /mnt
> ls: /mnt: Bad file descriptor
What happened to the original disk? This sounds like the / directory
got wiped, along with the first superblock...was the disk partially erased?
> What else can I try? Pulling 15GB of data from lost+found is pretty
What are you trying to accomplish?
What you might want to do depends on whether you want to simply identify
your files from OS files (timestamps, if still meaningful could help
here), how important recovering the directory structure is, etc.
If you knew that the first XXX MB of the disk had been wiped, you might
try installing the same version of FreeBSD you were running to a new
filesystem of the same size and layout-- be sure to specify a 8K/1K
block/frag size versus 16K/2K if that's what you had. And then copy
that chunk of data over the zero'd portion of your recovered data, and
see whether that helps.
Or you could then perform an md5 hash of every file found on a clean
install, and md5 all of the recovered files under /lost+found, and only
pay attention to recovered files which don't have a checksum that matches.
PS: Given the state of employment in the tech industry, you might find
that offering, say, a 6-month subscription to a "beer of the month club"
to the person who helps you out the most would have astonishing results.
If also happened to know that modern beer and ales originated with the
Trappist abbey monks who brewed beer to serve as a meal during Lent, a
modification of .sig's with comments like "will hack for food" to "will
admin for beer" makes perfect sense. Beer is good food. :-)
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