Re: Linux Buffer Cache Does Not Support Mirroring

Stephen C. Tweedie (sct@redhat.com)
Tue, 2 Nov 1999 14:37:04 +0000 (GMT)


Hi,

On Tue, 2 Nov 1999 09:46:56 +0100, Ookhoi <ookhoi@dds.nl> said:

>> jfs breaks if used with RAID.

> Uhm, can you please explain why that is, or point me to some docs?
> Just curious.

Currently raid expects access to be able to do things in the buffer
cache bypassing the normal ll_rw_block() device driver interface, and
this violates the IO ordering requirements imposed by jfs. We're
working on it.

--Stephen

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