disk scrubber for Linux?

[Tom Buskey]

On 12/9/05, Paul Lussier <p.lussier at comcast.net> wrote:
>
>
> While it's all well and good to claim that backups are still
> necessary, or the system should be designed better, yadda, yadda,
> yadda, the reality is this:
>
> - the quality of IDE hard drives sucks compared SCSI
> - the cost SCSI quality is more than customers will pay
> - there is big demand for low-cost, disk-based archival systems
>    scaling into the PETA-byte range
>
> Given that the servers in these clusters are usually 1u, and have 4
> drives in them, it's imperitive to maximize the storage space per
> node.  Going to scsi automatically increases your cost ridiculously,
> but more importantly, simultaneously descreases your maximum capacity
> per node.
>
> So, mod's request for something which "scrubs" disks in the background
> and re-maps bad blocks on the fly, IMO, is not only a legitimate
> request, but something sorely needed in the Linux space.