On Sat, 2016-04-16 at 00:35 +0530, Ritesh Raj Sarraf wrote:
> Hello Mike,
> 
> All I can say is that I am able to see the behavior that you've mentioned (So
> marking the bug as confirmed). THis is seen on my LIO iSCSI Setup running on 2
> Guest VMs.
> 
> In doing that, I was surprised that those dev/mapper/ entries are now
> symlinks.
> My storage knowledge has rusted for some time now, but from what I recollect,
> it
> used to by direct block node names, not symlinks.

Maybe this could be of some help to you in debugging this further.

Apr 16 00:34:11 debian-sanboot systemd[1]: Started Device-Mapper Multipath
Device Controller.
Apr 16 00:34:11 debian-sanboot systemd-udevd[949]: conflicting device node
'/dev/mapper/sanroot' found, link to '/dev/dm-0' will not be created


So I think my understanding was correct about Device Mapper's behavior. Now I'm
not sure what 'systemd-udevd[949]' is reflecting here as. I doubt if that is the
ID for the rules processing because then I'd have seen the respective rule.

I hope this is of some use to you. My Debian time for today is running out :-)


-- 
Ritesh Raj Sarraf | http://people.debian.org/~rrs
Debian - The Universal Operating System

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