Card-Reader Problem continued

Alan Stern stern at rowland.harvard.edu
Fri May 19 13:06:07 PDT 2006


On Tue, 16 May 2006, David Zeuthen wrote:

> Interesting. Tell me again, How many main block devices
> e.g. /dev/sda, /dev/sdb etc. does the device provide? One has to keep in
> mind that we poll _every one_ of these block devices every two seconds.
> So for a card reader with four main block devices (say /dev/sda
> through /dev/sdd), which is common, we poll 4 times every two seconds,
> e.g. every 0.5 seconds in average. 

The log posted by Christian showed 7 polls ocurring over a period of 515 
ms.  The LUNs addressed by those polls were 2, 2, 2, 1, 1, 1, 1.

Could it be that somehow there were four copies of hald running for each 
LUN?

Alan Stern




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