Hello all,

I just wanted to draw some attention to the following bug I stumbled
across yesterday when sending concurrent requests to attach a
non-multiattach volume to multiple instances :


Scanning over the v3 API code in Cinder suggests that this could be due
to a complete lack of locking when creating the initial attachment but I
might be missing something here. I've marked this as impacting both Nova
and Cinder for now while but if I'm honest this strikes me as something
we need to resolve in c-api alone.


Lee Yarwood                 A5D1 9385 88CB 7E5F BE64  6618 BCA6 6E33 F672 2D76

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