Messages in this thread |  | | Subject | Re: [POT] Which journalised filesystem ? | Date | Thu, 4 Oct 2001 22:25:12 +0100 (BST) | From | Alan Cox <> |
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> > 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.
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