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Re: writeback on /tmp and laptop?



"Stephen C. Tweedie" <sct redhat com> writes:

>> Wwould the Linux 2.5 (or maybe even 2.4, but I don't dare to dream of
>> that) version be able to cope with -W1 through using ordered tags or
>> flush cache commands?
>
> In theory, yes, but the code is not integrated.

Well, whom do I tell that I'd really like to see that in Linux 2.6?

> To some extent, yes.  The trouble is, once you add in LVM or software
> raid, all the hardware help disappears since you now have the added
> problem of having to synchronise over multiple disks.  A cache flush is
> a much easier primitive to push down through the logical-device stack,
> though.

Well, yes, but the RAID or LVM or EVMS layer should be aware of what our
logical block unfurls to -- so are these subsystems lacking the
necessary interfaces?

-- 
Matthias Andree





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