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Re: [dm-devel] multipath -ll output discrepancy for IBM 1818 on SLES 11 SP1....

On 04/01/2011 03:31 PM, Dharmesh Kamdar wrote:
> So, my question is : even if we mention 
>                              features "2 pg_init_retries 50" 
> why are we seeing " features='3 queue_if_no_path pg_init_retries 50' 
> hwhandler='1 rdac' wp=rw" in the multipath -ll output ?
> 1) Where is this "3" coming from  ? and what is it's significance ?? 

It's the count if items to parse on the rest of the features line.

> 2) Is this "3" next to the features in "multipath -ll" output as expected (even 
> though we mention "2 pg_init_retries 50" ) in our multipath.conf ??

The format of the features field is:

FeatureCount# Feature/param0 Feature/param1 ... Feature/paramN

The 3 indicates three features/parameters. The first is "queue_if_no_path"
(which is implied by the "no_path_retry 30" in your device block - no_path_retry
requires the queue_if_no_path feature be enabled at the device-mapper level).
The 2nd and 3rd are the pg_init_retries feature and its parameter.


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