Re: Stop SSD from waiting for "Spinning up disk..."

From: Martin Steigerwald
Date: Tue Jun 23 2015 - 14:56:03 EST

Am Dienstag, 23. Juni 2015, 20:26:12 schriebst Du:
> Hi,


> [proper In-Reply-To trail missing since now fails to provide it]
> > Greg,
> >
> > SSD is coming mainstream and it doesn't make sense wasting time
> > spinning up "disk" ...
> ...which probably is not truly being achieved
> by providing a *custom* kernel parameter
> which does apply to only those disk instances
> which some users *specifically* care about.
> Some things come to mind:
> - at this scope, generally spoken
> one shouldn't be concerned with whether "we are SSD",
> but rather whether "we (do not) need spinup"
> (which might apply to a ton of different SCSI-based storage devices,
> even some SAN-based platter-based ones)
> *This* is what this is about
> (and this could then have been reflected in kernel parameter naming)
> - the kernel must already have some mechanisms to discern between
> (non-)platters (e.g. perhaps for knowing whether to support SSD TRIM
> command)

Yep, for the first SSD in this laptop:

merkaba:/sys> cat


Martin 'Helios' Steigerwald -
GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7
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