Re: Btrfs lockups on ubuntu with bees

["Libor Klepáč" <libor.klepac@bcom.cz>]

Hi,

On St, 2021-12-15 at 11:48 +0200, Nikolay Borisov wrote:
> 
> 
> On 15.12.21 г. 11:42, Libor Klepáč wrote:
> > 
> > On Po, 2021-12-13 at 17:51 -0500, Zygo Blaxell wrote:
> > > On Thu, Dec 09, 2021 at 09:23:53AM +0000, Libor Klepáč wrote:
> > > > 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
> > 
> > > > 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
> 
> 
Sorry, cannot experiment much on those machines.
I went back to kernel 5.10.x , as Zygo suggested. 
Also had minor heart attack, when it said "cannot open ctree" on first
boot with that kernel, but it was fine on next mount

Libor


> > > 
> > > > Thanks,
> > > > Libor
> > > > 
> > > > 
> > > > > >