Re: [POT] Which journalised filesystem ?

Alan Cox
2001-10-04T21:19:44Z

> > Alan mentioned this was something to do with the IBM hard disk
> > having strange write-cache properties that confuse ext3.
>
> Which IBM harddrive(s) does this? How can one check if it does?

Its not specifically IBM, there are two sets of things to watch out for

- Cache flush as a nop/unimplemented. This is legal in all but the
most recent ATA specification. The spec has been tightened so that
problem will go in time

- Some IBM laptop drives appeared to fail to write back the cache on
machine shutdown/suspend etc. The exact rights/wrongs/details on
that one haven't been pinned down because the folks concerned
swapped a couple of drives for different ones, saw the problem
vanish and being a large organisation had the supplier replace the
other fifty odd.

Alan