Re: ZFS deadlock in 14

Reply: Dag-Erling_Smørgrav : "Re: ZFS deadlock in 14"
In reply to: Dag-Erling_Smørgrav : "ZFS deadlock in 14"
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From: Alan Somers <asomers_at_freebsd.org>
Date: Tue, 08 Aug 2023 17:16:47 UTC

On Tue, Aug 8, 2023 at 10:08 AM Dag-Erling Smørgrav <des@freebsd.org> wrote:
>
> At some point between 42d088299c (4 May) and f0c9703301 (26 June), a
> deadlock was introduced in ZFS.  It is still present as of 9c2823bae9 (4
> August) and is 100% reproducable just by starting poudriere bulk in a
> 16-core VM and waiting a few hours until deadlkres kicks in.  In the
> latest instance, deadlkres complained about a bash process:

Do you have ZFS block cloning enabled on your pool?  There were a lot
of bugs associated with that feature.  I think that was merged on
3-April.

> zpool get feature@block_cloning zroot
NAME   PROPERTY               VALUE                  SOURCE
zroot  feature@block_cloning  disabled               local