On Sat, Feb 23, 2008 at 11:14:32PM +0100, Rekrutacja119 wrote:
> so i should use the list i got from badblocks with dd but with bs=1024? are
> you sure? i'm not sure what is my block size, but xfs_info says this:
the block size of the filesystem has no relation to the block size
badblocks uses in checking the block device.
>
[...]
>
> i think i made it with 4K stack size ... well anyways, i should use the list
> i got earlier and just try dd but with bs=1024... ? don't want to erase more
> than i have to. (i want to do it so i can smartctl -t offline /dev/sdb then,
> so maybe it will somehow see that these blocks are broken and mark them)
I don't understand what do you want to do with smartctl at all. How
would offlining the disk would help?
Again, I would:
- take the block list given by badblocks
- verify that each block can't be read first via dd if=/dev/...
of=/dev/null bs=1024 count=1 seek=NUMBER_FROM_BADBLOCK
- if confirmed that you got the right 'bad' blocks, use that for dd
with bs=1024 to write zeroes over them
As Eric confirmed, you probably already destroyed some good data on the
drive.
regards,
iustin
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