Re: Changes to ide-probe.c in 2.6.9-rc2 causing improper detection

[Jens Axboe]

On Mon, Sep 13 2004, C.Y.M. wrote:
> After installing 2.6.9-rc2 on my PC today (x86 VIA Chipset motherboard and
> Athlon XP CPU), The IDE detection during boot in probing for ide2-5 and
> displaying errors, and the hard drives that it does find are telling me that
> "hda: cache flushes not supported" (when they are displayed as supported
> when using 2.6.9-rc1.

Your drive doesn't advertise FLUSH_CACHE support, the model for when we
use these commands changed between -rc1 and -rc2. This essentially means
that you have to turn off write back caching for safe operations on a
journalled drive.

Alan, I bet there are a lot of these. Maybe we should consider letting
the user manually flag support for FLUSH_CACHE, at least it is in their
hands then.

-- 
Jens Axboe

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