Vivek Goyal <vgo...@redhat.com> writes: > On Fri, Apr 15, 2016 at 02:46:24PM +0300, Marius Vollmer wrote: > >> Sorry, I was talking about d-s-s. Do you think it is a bug in d-s-s >> that pvcreate might prompt during its run and make it fail in a >> non-interactive use? > > No it is not a bug. If user provided a disk to dss which alrady has > signatures from other tools, we will not use that disk for thin > pool. One needs to wipe all the signatures and then provide that disk > to dss.
Just to repeat this (and then I shut up :-), in my case pvcreate found a obsolete and unaccessible signature somewhere in the middle of a disk that didn't have a partition table and looked empty to everyone involved when it was given to d-s-s. The disk did not contain a xfs partition, just a random, left-over signature that happened to be at the right place for the partition that d-s-s has created. > dss being a service does not mean it will automatically wipe off any > exisitng signatures on disk. It is very risky. I am not sure why are > you taking it so lightly. Because the current behavior of d-s-s in this area feels more like an accident than design, and I had assumed it was unintended.
