Re: [Xen-devel] [PATCH OSSTEST] Allow longer timeout when creating backing file for a raw disk.

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Ian Campbell writes ("[PATCH OSSTEST] Allow longer timeout when creating 
backing file for a raw disk."):
> I noticed this dd timiung out when recommissioning the 3 cubietrucks
> (picasso, metzinger, gleizes) but looking at the log shows this has
> been happening on braque too.
> 
> The current code assumes 65MB/s arriving at a timeout of 153s for the
> 10G file. On arndale-* the logs indicate that it is achieving 95MB/s
> and taking 105-107s which results in a warning but not a failure:
> 
>    execution took 105 seconds [**>153.846153846154/2**]
> 
> In experiments on a local cubietruck I observed it achieving a much
> lower throughput of 40MB/s, which seems to be consistent with what
> others are seeing:
> https://groups.google.com/forum/#!category-topic/cubieboard/troubleshooting/7R4HlCDNCTU
> 
> Therefore calculate the timeout assuming a throughput of 20MB/s, in
> practice for a 10GB file this will result in a 500s timeout.

Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>

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