On Sat, 14 Sep 2002, Alex Davis wrote:
> --- Andre Hedrick <andre@linux-ide.org> wrote:
> >
> > Hi Alex,
> >
> > We (T13 Standards) only recently required (shall) all non-packet device to
> > support flush cache. No where does it state that a device supporting PM
> > for a standby (shall), the key word here is "shall", issue a flush-cache.
> I am assuming that a hard drive is a non-packet device. Let me make sure I'm
Today, yes ... In the past no.
There are a handfull of these strange beasts which still exists.
> interpreting this correctly: older ( and some current ) drives may flush cache
> on standby/sleep; current and future drives may not. In addition, older drives
It means there are not rules (rules is a loose term) for how to do this in
the standard.
> may not support the flush cache command.
There is supported v/s enabled, and these can be optional.
Optional == (Mandatory Optional) because nobody wants to not have the
feature ready or they will miss the sale.
> > I will not break support for older hardware, on a whim.
> Not my intention.
Cool.
> > You said you can make a patch, please do so and apply it to your tree.
> > Now, if you want the option, submit the patch for review. For two or
> > three days there has been no patch to test.
> Still testing locally. I also want to fix the code so that the flush is
> done before the standby.
Wait, how did the order go south?
> >
> > To be absolutely honest, I really do not like to give options in the
> > kernel-config build which can cause backwards compatablity problems.
> This wouldn't be a config option. You would have to modify ide.c by
> hand to disable standby.
So a manual config option? That is more reasonable and not doable by
accident.
Cheers,
Andre Hedrick
LAD Storage Consulting Group
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This archive was generated by hypermail 2b29 : Sun Sep 15 2002 - 22:00:37 EST