[linux-lvm] unable to recover from degraded raid1 with thin pool (was: activation mode=degraded doesn't work with thin pool)

Gionatan Danti g.danti at assyoma.it
Fri Oct 20 21:06:30 UTC 2017

Il 19-10-2017 13:45 Alexander 'Leo' Bergolth ha scritto:
> On 10/17/2017 03:45 PM, Alexander 'Leo' Bergolth wrote:
>> I just tested lv activation with a degraded raid1 thin pool.
>> Unfortunately it looks like activation mode=degraded only works for
>> plain raid1 lvs. If you add a thin pool, lvm won't activate it in
>> degraded mode. (Unless you specify --activationmode partial, which is
>> IMHO rather dangerous.)
> Unfortunately I cannot even replace a faulty PV if a thin pool is 
> present.

 From you command history, I can see you are trying to remove the failed 
device (to re-add a good device later).
Instead, can you try with lvconvert --repair or lvconvert --replace? Do 
they works?


Danti Gionatan
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