[mythtv-users] Is my JFS broken ?

[John Drescher]

On Wed, Aug 27, 2008 at 11:56 AM, Alex Butcher <mythlist at assursys.co.uk> wrote:
> On Wed, 27 Aug 2008, John Drescher wrote:
>
>> And when it gets kicked out of an array I run badblocks for a weekend on
>> the drive and if it finds 1 single bad block I RMA the drive since modern
>> hard drives should automatically remap bad sectors to good ones they have
>> in reserve. If you see any bad sectors then something really bad is
>> happening..
>
> In my experience, no drive remaps bad sectors on reads, only on writes. This
> kinda makes sense, since if you're writing to a block, you obviously don't
> care what's (supposed to be) there and it's completely safe to remap.
>
> Now, if they're failing to remap on write operations, they've probably run
> out of spare blocks and are truly dead.
>

I should have added that I do the rw badblocks test over the weekend
on kicked out drives. And I check do check the smart. Only once has
this yielded a drive that I put back into an array. Every other time I
did this I ended up sending the drive back.

John