Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [git patches] libata hibernation fixes | Date | Tue, 4 Nov 2008 22:08:42 +0100 |
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On Tuesday, 4 of November 2008, Pavel Machek wrote: > Hi! > > > - quite possibly: we just should not spin down disks at all, and just > > flush them and do the "park" command thing. If we're _really_ powering > > off, the disks will spin down on their own when power goes away. Maybe > > that's what Windows does? > > I believe that 'emergency' spindown (on power fail) is different from > regular spindown, and that emergency spindown damages the disk more. > > But perhaps park + power fail is similar to regular spindown? > > (Is park command normally supported on modern disks? IIRC hdaps people > had issues with not all disks supporting it?)
I don't know really and that's why I'd prefer it if Tejun commented here.
Anyway, I created these patches because the people who discussed this issue believed it was the right thing to do. They are based on a Tejun's patch posted as an attachment to http://bugzilla.kernel.org/show_bug.cgi?id=8855 . Please look into that bug entry for further references.
Thanks, Rafael
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