[PATCH 02/24] scsi-multipath: introduce basic SCSI device support

Hannes Reinecke hare at suse.com
Mon Mar 2 22:57:12 PST 2026


On 2/25/26 16:36, John Garry wrote:
> For a scsi_device to support multipath, introduce structure
> scsi_mpath_device to hold multipath-specific details.
> 
> Like NS structure for NVME, scsi_mpath_device holds the mpath_device
> structure to device management and path selection.
> 
> Two module params are introduced to enable multipath:
> - scsi_multipath
> - scsi_multipath_always
> 
> SCSI multipath will only be available until the following conditions:
> - scsi_multipath enabled and ALUA supported and unique ID available in
>    VPD page 83.
> - scsi_multipath_always enabled and unique ID available in VPD page 83
> 
Why don't you merge these two options, and have
scsi_multipath=on
and
scsi_multipath=always
?

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                  Kernel Storage Architect
hare at suse.com                               +49 911 74053 688
SUSE Software Solutions GmbH, Frankenstr. 146, 90461 Nürnberg
HRB 36809 (AG Nürnberg), GF: I. Totev, A. McDonald, W. Knoblich



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