Re: ZFS deadlock in 14

[I had sent to the wrong list. Just fixing that here.]

On Aug 18, 2023, at 09:26, Mark Millard <marklmi@yahoo.com> wrote:

> Dag-Erling_Smørgrav <des_at_FreeBSD.org> wrote on
> Date: Fri, 18 Aug 2023 14:16:12 UTC :
> 
>> Dag-Erling Smørgrav <des@FreeBSD.org> writes:
>>> A kernel built from c47116e909 plus these two patches has so far built
>>> 2,285 packages without a hitch, whereas normally it would have
>>> deadlocked after well before reaching 500 packages. I'll do another run
>>> without the patches tomorrow just to be sure.
>> 
>> Plot twist: c47116e909 _without_ the patches also appears to be working
>> fine. The last kernel I know for sure deadlocks is b36f469a15, so I'm
>> going to test cd25b0f740 and 28d2e3b5de.
> 
> I'm confused:
> 
> Tue, 18 Jul 2023
> . . .
>    • git: b36f469a15ec - main - zfs: set autotrim default to 'off' Yuri Pankov
> 
> But you had written:
> 
> Dag-Erling_Smørgrav <des_at_FreeBSD.org>
> Date: Tue, 15 Aug 2023 17:37:45 UTC 
> The attached script successfully deadlocks 9228ac3a69c4
> 
> where:
> 
> Thu, 10 Aug 2023
> . . .
>    • git: 9228ac3a69c4 - main - ixgbe: Add support for 82599 LS Kevin Bowling
> 
> (You had previously reported a poudriere deadlock there as well.)
> 
> Later on 2023-Aug-10 there is (about 11 or so commits later):
> 
>    • git: cd25b0f740f8 - main - zfs: cherry-pick fix from openzfs Martin Matuska 
>    • git: 28d2e3b5dedf - main - zfs: cherry-pick fix from openzfs Martin Matuska
> 
> 
> I'll note there was also this:
> 
> Dag-Erling_Smørgrav <des_at_FreeBSD.org>
> Date: Sat, 12 Aug 2023 14:11:10 UTC 
> . . .
> Trying to narrow this range down, I did not get a deadlock with
> 4e8d558c9d1c (10 June) but I did with b7198dcfc039 (16 June), albeit
> after building ~1800 packages.
> . . .
> 
> So the count seems to sometimes go well above 500 or so.



===
Mark Millard
marklmi at yahoo.com