On 2007-Jun-13 21:08:48 -0700, Jeremy Chadwick <[EMAIL PROTECTED]> wrote: >Realistically, what we need on FreeBSD is a tool similar to Solaris's >format(8) "analyze" command, which does a raw disk scan (r, r/w, and a >couple other operations).
The "analyze" function is just a pattern test with the ability to restore the original content. Writing one is trivial. >[1] - If the OS is seeing bad blocks on a PATA/SATA disk, usually it means >that the internal remapping table is full, which means that there were >other bad blocks on the disk which it has silently remapped for you to >avoid pain -- and space for those blocks has been exhausted. Re-mapping generally only works on writes. If you can't read existing data off the platter then you will get a bad block error irrespective of the remapping table. A sector that could not be read can often be written. >and you're stuck simply replacing the disk entirely. Bad blocks have a >tendency to spread too... Definitely - once the number of soft errors starts increasing, it's time to replace the disk. -- Peter Jeremy
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