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Re: [dm-devel] [PATCH 3/3] dm: allow error target to replace immutable target



On Thu, Aug 29 2013 at 10:37am -0400,
Mikulas Patocka <mpatocka redhat com> wrote:

> As I said - I think it would be better to remove the immutable flag than 
> to create more flags to bypass it.

Immutable was introduced to prevent dangerous scenarios that weren't
accounted for in original design, etc.  It solved your crash when you
rep;aced a thin-pool with an empty table.

immutable is staying for now.  And as it turns out allowing error target
to override an immutable target was always held to be a logical/possible
future relaxation of the immutable constraint.

Mike


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