Re: [PATCH] SCSI midlayer power management

Nathan Bryant
2004-08-11T16:44:47Z

James Bottomley wrote:
> On Wed, 2004-08-11 at 10:21, Alan Cox wrote:
>
>>In addition we are not doing SCSI target so multi-initiator is ok.
>>One question James - what are the rules for power management with
>>SCSI when we provide termpwr to a shared bus ?

Well there are (at least) two reasons to do shared bus: IP over SCSI and
cluster filesystems. At least for cluster filesystems I think the answer
is "don't suspend your machine" for the foreseeable future - what
happens if your machine goes to sleep while holding cluster FS locks,
etc. I doubt any CFS vendors are going to bother to support this any
time soon, since it's a HA/server feature and power management is really
a desktop/laptop feature.