Re: [PATCH 2/3] sd: implement START/STOP management

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Henrique de Moraes Holschuh wrote:
On Thu, 22 Mar 2007, Vladislav Bolkhovitin wrote:

Seems, there is another way of doing a bank spin up / spin down: doing it in two passes. On the first pass START_STOP will be issued with IMMED=1 on all devices, then on the second pass START_STOP will be issued with IMMED=0. So the devices will spin up / spin down in the parallel, but synchronously, hence the needed result will be achieved


And maybe trip the PSU's overcurrent defenses?  There is a reason to default
to sequential spin-up for disks...

But on spin down there is no such problem

Of course, it can be user-selectable. But should it be the default?


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