On 15.12.21 г. 11:42, Libor Klepáč wrote:

On Po, 2021-12-13 at 17:51 -0500, Zygo Blaxell wrote:

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On Thu, Dec 09, 2021 at 09:23:53AM +0000, Libor Klepáč wrote:

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Hi,
thanks for looking into it.
More bellow
 ......
Lockup happened also at second customer, where we tried to use this
solution.
Good news is, that when we stop bees, it does not happen again and
btrfs scrub says, that all data are ok.
Bad news is, we will run out of disk space soon ;)

Downgrading to 5.10.82 seems to work around the issue (probably also
.83 and .84 too, but we have more testing hours on .82).

Ok, thanks for info. I will try, if we can run this machine with debian
kernel from stable - 5.10.x

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Are you interested in trace from kernel? I saved it, but i don't
know,
if it's the same as before.

Sure.

Here it is 
https://download.bcom.cz/btrfs/trace5.txt

That's the same issue that Zygo has reported, care to also perform the
steps I outlined in the following email:

https://lore.kernel.org/linux-btrfs/c6125582-a1dc-1114-8211-48437dbf4976@suse.com/T/#m79e9da87b8ec15c40999999d3ffc348f271fbf33 (local)

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Thanks,
Libor

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