Re: Journaling pointless with today's hard disks?

Matthias Andree
2001-12-04T00:21:03Z

On Tue, 27 Nov 2001, Pavel Machek wrote:

> > Note, the specifications say that the write cache setting is ignored
> > when the drive runs out of spare blocks for reassignment after defects
> > (so that the drive can return the error code right away when it cannot
> > guarantee the write actually goes to disk).
>
> They should turn off write-back after number-of-spare-block < cache-size,
> otherwise they are not safe.

I don't know exactly what they're doing, but they also need to safeguard
against defective spare blocks, so number-of-space-blocks < cache-size
is not sufficient.