On 3/15/21 6:38 PM, Sagi Grimberg wrote:

quoted

From: Hannes Reinecke <hare@suse.de>

If persistent controller connections are present they should be
preferred even if no --device option is given on the commandline.
To avoid selecting a temporary non-persistent controller the
'kato' attribute is checked; any controller which does not have
this attribute or for which the attribute is '0' will be skipped.

Why?

You also need a fallback in case kato is not exposed in prior
kernels.

The idea was to make the '--device' attribute optional _iff_ the kernel 
exposes the 'kato' attribute _and_ that attribute is non-zero.

Nothing more, nothing less.

Apparently the comment was slightly misleading.
I never intended to change the current behaviour if the 'kato' attribute 
is not exposed.

Cheers

Hannes
-- 
Dr. Hannes Reinecke                Kernel Storage Architect
hare@suse.de                              +49 911 74053 688
SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 36809 (AG Nürnberg), Geschäftsführer: Felix Imendörffer

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