Messages in this thread | | | Subject | Re: ata_ram driver | From | James Bottomley <> | Date | Thu, 06 Mar 2008 18:39:58 -0600 |
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On Fri, 2008-03-07 at 09:28 +0900, Tejun Heo wrote: > James Bottomley wrote: > >> Yeap, sure. It's the combination of things that always made me put this > >> off. Is there a function I can call to just shutdown the host instead > >> of destroying it? > > > > Not really ... the process of unbinding the ULDs causes their remove > > methods to call shudown. It is possible to separate this in the ULDS; > > but the original design was to make remove and shutdown be similar for > > the very reason that if you're removing the driver with unflushed data > > in the cache, we'd really like it flushed (flush is called from > > shutdown) because you have no way to talk to the device after this > > without reinserting the driver. > > The problem is that libata EH and other stuff aren't ready to let go of > the SCSI host up until the last moment and that last moment can't be > moved before SCSI host destruction because shutdown sequence (flush and > spindown) requires live EH. I think this can be solved by shooting down > individual sdev's instead of destroying the scsi_host.
Basically what scsi_scan.c:scsi_forget_host() does? It's used internally at the moment, but I suppose we could export it.
James
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