[linux-lvm] Option to silence "WARNING: Sum of all thin volume sizes exceeds the size of thin pool"

Zdenek Kabelac zdenek.kabelac at gmail.com
Mon Sep 18 20:08:19 UTC 2017

Dne 18.9.2017 v 21:07 Gionatan Danti napsal(a):
> Il 18-09-2017 20:55 David Teigland ha scritto:
>> It's definitely an irritation, and I described a configurable alternative
>> here that has not yet been implemented:
>> https://bugzilla.redhat.com/show_bug.cgi?id=1465974
>> Is this the sort of topic where we should start making use of
>> https://github.com/lvmteam/lvm2/issues ?
> Hi, the proposed solution on BZ entry seems somewhat too "invasive" to me.
> I think it generally is a good idea to warn the users about possibly 
> unexptected behavior (ie: full pool).
> However, for the specific use-case of taking read-only snapshots, something as 
> simple as "--silencepoolsizewarn" flag (or similar configuration variable) 
> would do the trick without distrupting legitimate warnings.

We can possibly print WARNING message only with the 1st. thin LV  which causes 
overprovisioining of thin-pool.

As  for 'read-only' snapshot - it really doesn't matter - the overprovisioned 
pool can in the 'worst' case end in out-of-space condition (i.e. fully 
rewritten origin)



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