Re: [PATCH] 2.4.10 improved reiserfs a lot, but could still be better

Alan Cox (alan@lxorguk.ukuu.org.uk)
Mon, 24 Sep 2001 16:45:03 +0100 (BST)

> > better. Decent write caching on IDE devices (like the 2meg buffer on the IBM)
> > can completely hide this issue.
>
> Decent write caching on IDE devices can eat your whole file system.

YM bad write caching 8)

> Turn it off (I have no idea of internals, but I presume it'll still be a
> write-through cache, so reading back will still be served from the
> buffer). Do hdparm -W0 /dev/hd[a-h].

You can't turn it off and on many drives you can't flush the cache either
the operation is not implemented.
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