Re: [External] : Re: [PATCH v2 3/3] xfs: incorporate increased AGFL min requirement for minleft allocs

On 8/14/26 9:47 AM, Brian Foster wrote:
> On Fri, Aug 14, 2026 at 09: 15: 15AM -0500, Mark Tinguely wrote: > On 8/14/26 8: 57 AM, Brian Foster wrote: > > On Fri, Aug 14, 2026 at 09: 22: 39AM -0400, Brian Foster wrote: > > > Matt Fleming reports a filesystem shutdown due
>
> 
> On Fri, Aug 14, 2026 at 09:15:15AM -0500, Mark Tinguely wrote:
>> On 8/14/26 8:57 AM, Brian Foster wrote:
>> > On Fri, Aug 14, 2026 at 09:22:39AM -0400, Brian Foster wrote:
>> > > Matt Fleming reports a filesystem shutdown due to inobt block
>> > > allocation failure during sparse chunk allocation. Inode creation


(deleted text)

>> 
>> 
>> thank you for the comment clarification.
>> I was confused by that change.
>> 
>> Could you CC stable. We saw a version of this problem in Linux 5.15
>> 
> 
> Sure, though I'm not sure how far back this will apply cleanly.
> 
> Curious.. was the instance you saw also an inobt alloc failure leading
> to dirty trans cancel and shutdown, or something different but similar?
> 
> Brian
> 

yes the v5.15 problem was a similar sparse inode chunk / inode btree insert failure.
I admit that I did not have the numbers to realize why the inode btree insert failed.

although this is a fundamental allocation flaw, the sparse inode chunk allocation
seems to be the just right/wrong conditions to trigger it.

Fixes: 5419040fc0f3a xfs: introduce inode record hole mask for sparse inode chunks ??

thanks for the fix

Mark Tinguely