Re: pdc mirror is not multipath i/o

[Heinz Mauelshagen <mauelshagen@xxxxxxxxxx>]

On Wed, May 11, 2005 at 10:23:10PM +0200, dm@xxxxxxxxx wrote:
> Hi all,
> 
> My PDC dmraid configuration is running fine using dmraid, but I discovered it 
> doesn't do multipath i/o:
> 
> # iostat 10
> Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
> hde             100.00      1029.60       104.80      10296       1048
> hdg               2.90         0.00       104.80          0       1048
> 
> hdg almost never seems to read from the disk.
> 
> Could someone please tell me what I'm doing wrong?

Nothing.

The device-mapper mirror target needs enhacing to do read balancing.

> 
> Greetings,
> Dick



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Regards,
Heinz    -- The LVM Guy --

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Heinz Mauelshagen                                 Red Hat GmbH
Consulting Development Engineer                   Am Sonnenhang 11
                                                  56242 Marienrachdorf
                                                  Germany
Mauelshagen@xxxxxxxxxx                            +49 2626 141200
                                                       FAX 924446
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