On Wed, Sep 20, 2017 at 04:59:31PM +0200, Christoph Hellwig wrote: > On Wed, Sep 20, 2017 at 12:40:32PM +0200, Johannes Thumshirn wrote: > > Notify sysfs about changes of a nvme controller so user-space can watch the > > file via poll() or select() in order to react to a state change. > > Userspace has no business polling for the state.
So why exposing it then in the first time? I know you don't want dm-mpath in NVMe (neither do I) but we have to have something until your patchset and ANA is merged. And with this patch it's trivial to build a path checker that just looks at the state attribute in sysfs. -- Johannes Thumshirn Storage jthumsh...@suse.de +49 911 74053 689 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850
