Re: Journaling pointless with today's hard disks?

Andre Hedrick
2001-11-27T00:19:03Z

On Mon, 26 Nov 2001, Andreas Dilger wrote:

> On Nov 27, 2001 00:49 +0100, Martin Eriksson wrote:
> > I sure think the drives could afford the teeny-weeny cost of a power failure
> > detection unit, that when a power loss/sway is detected, halts all
> > operations to the platters except for the writing of the current sector.
>
> What happens if you have a slightly bad power supply? Does it immediately
> go read only all the time? It would definitely need to be able to
> recover operations as soon as the power was "normal" again, even if this
> caused basically "sync" I/O to the disk. Maybe it would be able to
> report this to the user via SMART, I don't know.

ATA/SCSI SMART is already DONE!

To bad most people have not noticed.

Regards,

Andre Hedrick
CEO/President, LAD Storage Consulting Group
Linux ATA Development
Linux Disk Certification Project