Re: zpool import skips wedges due to a race condition

To: Patrick Welche <prlw1%cam.ac.uk@localhost>
Subject: Re: zpool import skips wedges due to a race condition
From: Martin Husemann <martin%duskware.de@localhost>
Date: Wed, 8 Sep 2021 09:56:03 +0200

On Wed, Sep 08, 2021 at 08:51:15AM +0100, Patrick Welche wrote:
> I see something similar in another context: when I shutdown, shutdown
> can stall on a system with dkX on cgdN, with
> 
> detaching dkX
> detaching cgdN
> detaching dkX    (same X)
> (hang)
> 
> If the dice are rolled correctly, and cgdN gets the detach before dkX,
> it shuts down properly...

No, this is something different. The kernel well knows all the dependencies.
This is a plain bug somewhere(tm).

Martin

References:
- zpool import skips wedges due to a race condition
  - From: Alexander Nasonov
- Re: zpool import skips wedges due to a race condition
  - From: Michael van Elst
- Re: zpool import skips wedges due to a race condition
  - From: Patrick Welche

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