[ceph-users] Re: Question about PR merge

23 Apr 2024

      Hi Nigel,

For your issue I created a dedicated tracker, please see 
https://tracker.ceph.com/issues/65630.

I have found the root cause and I am still trying to find the proper way 
to fix it. Please watch the tracker.

Thanks

- Xiubo

On 4/18/24 14:22, Nigel Williams wrote:
...
Hi Xiubo,
Is the issue we provided logs on the same as Erich or is that a third 
different locking issue?
thanks,
nigel.
On Thu, 18 Apr 2024 at 12:29, Xiubo Li <xiubli@redhat.com> wrote:
On 4/18/24 08:57, Erich Weiler wrote:
    >> Have you already shared information about this issue? Please do
    if not.
    >
    > I am working with Xiubo Li and providing debugging information - in
    > progress!
    >
     From the blocked ops output it very similiar the same issue as
    Patrick's lock order fixed before.
I am still waiting the complete debug logs from Erich.
And the lock order PR is under reviewing.
- Xiubo
>>> I was
    >>> wondering if it would be included in 18.2.3 which I *think*
    should be
    >>> released soon?  Is there any way of knowing if that is true?
    >>
    >> This PR is primarily a debugging tool. It will not make 18.2.3
    as it's
    >> not even merged to main yet.
    >
    > Ah, OK.  I hope some solution can be had soon for this item if
    Xiubo
    > figures it out - it's requiring constant attention to keep my
    > filesystem from hanging, or, the restart MDS daemons multiple
    times a
    > day to "unstick" the filesystem on random cluster nodes. We
    think it's
    > due to lock contention/deadlocking.
    >
    > Possibly it's not affecting others as much as me...  We have an HPC
    > cluster hammering the filesystem (18.2.1) and the MDS daemons
    seems to
    > be reporting lock issues pretty frequently while nodes and
    processes
    > fighting to get file and directory locks, and deadlocking (we
    think).
    >
    > I'll keep working with Xiubo.
    >
    > -erich
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