Thank you Frank. My focus is actually performance tuning. After your mail, I started to investigate client-side. I think the kernel tunings work great now. After the tunings I didn't get any warning again. Now I will continue with performance tunings. I decided to distribute subvolumes across multiple pools instead of multi-active-mds. With this method I will have multiple MDS and [1x cephfs clients for each pool / Host] To hide subvolume uuids, I'm using "mount --bind kernel links" and I wonder is it able to create performance issues on cephfs clients? Best regards. Frank Schilder <frans@dtu.dk>, 27 Oca 2024 Cmt, 12:34 tarihinde şunu yazdı:
Hi Özkan,
... The client is actually at idle mode and there is no reason to fail at all. ...
if you re-read my message, you will notice that I wrote that
- its not the client failing, its a false positive error flag that - is not cleared for idle clients.
You seem to encounter exactly this situation and a simple
echo 3 > /proc/sys/vm/drop_caches
would probably have cleared the warning. There is nothing wrong with your client, its an issue with the client-MDS communication protocol that is probably still under review. You will encounter these warnings every now and then until its fixed.
Best regards, ================= Frank Schilder AIT Risø Campus Bygning 109, rum S14 _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io