Messages in this thread | | | From | Daniel Phillips <> | Subject | Re: [1/1] Block device throttling [Re: Distributed storage.] | Date | Sat, 1 Sep 2007 21:42:53 -0700 |
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On Friday 31 August 2007 14:41, Alasdair G Kergon wrote: > On Thu, Aug 30, 2007 at 04:20:35PM -0700, Daniel Phillips wrote: > > Resubmitting a bio or submitting a dependent bio from > > inside a block driver does not need to be throttled because all > > resources required to guarantee completion must have been obtained > > _before_ the bio was allowed to proceed into the block layer. > > I'm toying with the idea of keeping track of the maximum device stack > depth for each stacked device, and only permitting it to increase in > controlled circumstances.
Hi Alasdair,
What kind of circumstances did you have in mind?
Regards,
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