Messages in this thread | | | Date | Tue, 2 Nov 1999 22:31:50 +0100 (MET) | From | Gerard Roudier <> | Subject | Re: Linux Buffer Cache Does Not Support Mirroring |
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On Mon, 1 Nov 1999, Alan Cox wrote:
> > separate (Hotfix and mirrroing ARE independent of NWFS even in Netware), > > however, there are fault tolerant dependencies that allow NWFS to handle > > some very complex data failure and recovery conditions not available > > with most other FS's. It is possible to implement without it, but then > > But can those be taught to another FS ? > > > drivers and the buffer cache. There's no obvious method of supporting > > async callbacks (which will increase file system performance by several > > hundred percent). > > This is callbacks on an I/O completion ? So you can execute some piece of fs > code in driver context ?
Callbacks on completion may help to order. What help IO performances on heavily loaded system is likely to defer, since this allows coalescence and IO sorting at O/S level. Still I donnot follow completely Jeff's statements.
Gérard.
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