Re: zbd/009 (btrfs on zone gaps) fail on current Linus tree

[Christoph Hellwig <hch@infradead.org>]

I've bisected the hang to:

commit 04147d8394e80acaaebf0365f112339e8b606c05 (HEAD)
Author: Naohiro Aota <naohiro.aota@wdc.com>
Date:   Wed Jul 16 16:59:55 2025 +0900

    btrfs: zoned: limit active zones to max_open_zones

with that patch zbd/009 hangs 100% for my config, and without it,
it works fine 100%.

On Wed, Oct 08, 2025 at 02:09:00PM +0000, Johannes Thumshirn wrote:
> On 10/8/25 8:07 AM, Johannes Thumshirn wrote:
> > On 10/8/25 8:02 AM, hch@infradead.org wrote:
> >> On Tue, Oct 07, 2025 at 11:16:08AM +0000, Johannes Thumshirn wrote:
> >>> hmm how reproducible is it on your side? I cannot reproduce it (yet)
> >> 100% over about a dozen runs, a few of those including unrelated
> >> patches.
> >>
> >> My kernel .config and qemu command line are attached.
> >>
> > OK I'll give it a shot. For my config + qemu it survived 250 runs of
> > zbd/009 yesterday without a hang :(
> >
> >
> Nope, even with your kconfig no success on recreating the bug.
> 
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