FAQ Search Today's Posts Mark Forums Read
» Video Reviews

» Linux Archive

Linux-archive is a website aiming to archive linux email lists and to make them easily accessible for linux users/developers.


» Sponsor

» Partners

» Sponsor

Go Back   Linux Archive > Redhat > Device-mapper Development

 
 
LinkBack Thread Tools
 
Old 05-19-2008, 07:11 PM
 
Default scsi_dh: attach to hardware handler fromdm-mpath

>Chandra Seetharaman wrote:
>> Hence, there is no need to attach it again from the multipath layer.

Hannes Reinecke wrote:
>Yes, you do. The user might have it's own custom configuration file,
covering new/unknown/unhandled/testing devices, which out of necessity
are _not_
>hardcoded in the device table of the device handler.
>So multipath has to have a way of attaching device handler to those
devices, too.

Quite agree. There are a lot of OEM vendors that may use for example the
LSI RDAC conrtoller but the SCSI inquiry for these devices return the
OEM device names.
The DELL MD3000 is an example of such a box. Instead of hardcoding
device tables of the handler if they could be configured using a custom
configuration file enabling new hardware becomes such a bliss.

-Shyam Iyer


--
dm-devel mailing list
dm-devel@redhat.com
https://www.redhat.com/mailman/listinfo/dm-devel
 
Old 05-19-2008, 08:01 PM
Chandra Seetharaman
 
Default scsi_dh: attach to hardware handler fromdm-mpath

Shyam,

Yes, the usefulness is understood. Hannes made that available thru the
dh_state parameter (2/7 of this series).

Just an FYI.

chandra
On Tue, 2008-05-20 at 00:41 +0530, Shyam_Iyer@Dell.com wrote:
> >Chandra Seetharaman wrote:
> >> Hence, there is no need to attach it again from the multipath layer.
>
> Hannes Reinecke wrote:
> >Yes, you do. The user might have it's own custom configuration file,
> covering new/unknown/unhandled/testing devices, which out of necessity
> are _not_
> >hardcoded in the device table of the device handler.
> >So multipath has to have a way of attaching device handler to those
> devices, too.
>
> Quite agree. There are a lot of OEM vendors that may use for example the
> LSI RDAC conrtoller but the SCSI inquiry for these devices return the
> OEM device names.
> The DELL MD3000 is an example of such a box. Instead of hardcoding
> device tables of the handler if they could be configured using a custom
> configuration file enabling new hardware becomes such a bliss.
>
> -Shyam Iyer
>

--
dm-devel mailing list
dm-devel@redhat.com
https://www.redhat.com/mailman/listinfo/dm-devel
 

Thread Tools




All times are GMT. The time now is 09:45 PM.

VBulletin, Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2007, Crawlability, Inc.
Copyright 2007 - 2008, www.linux-archive.org