[dm-devel] [PATCH 78/78] multipathd: trigger all devices on startup

[Hannes Reinecke]

On 03/27/2015 06:59 AM, Benjamin Marzinski wrote:
> On Mon, Mar 16, 2015 at 01:37:05PM +0100, Hannes Reinecke wrote:
>> During startup multipathd might race with udev and device discovery.
>> During that time any information from libudev might not be fully
>> available, leading to spurious multipathd failures during startup.
>> So instead of scanning all devices on our own we should just
>> re-trigger the existing devices; with that we'll read _all_
>> devices via uevents during startup and avoid the race condition.
> 
> Should we also be sending change uevents for the dm devices?
> 
No. We just need to retrigger the 'sd' devices, as with them we'll
be reconfiguring the dm devices anyway.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		               zSeries & Storage
hare at suse.de			               +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)