[ceph-users] Re: Multi-active MDS cache pressure

2022-08-12 Thread Eugen Block
Hi, I created a tracker issue: https://tracker.ceph.com/issues/57115 Thanks, Eugen Zitat von Dhairya Parmar : Hi there, This thread contains some really insightful information. Thanks Eugen for sharing the explanation by the SUSE team. Definitely the doc can be updated with this, it might

[ceph-users] Re: Multi-active MDS cache pressure

2022-08-10 Thread Eugen Block
Hi, This thread contains some really insightful information. Thanks Eugen for sharing the explanation by the SUSE team. Definitely the doc can be updated with this, it might help a lot of people indeed. Can you help creating a tracker for this? I wish to add the info to doc and push a PR for

[ceph-users] Re: Multi-active MDS cache pressure

2022-08-10 Thread Dhairya Parmar
Hi there, This thread contains some really insightful information. Thanks Eugen for sharing the explanation by the SUSE team. Definitely the doc can be updated with this, it might help a lot of people indeed. Can you help creating a tracker for this? I wish to add the info to doc and push a PR

[ceph-users] Re: Multi-active MDS cache pressure

2022-08-09 Thread Malte Stroem
Hello Eugen, thank you very much for the full explanation. This fixed our cluster and I am sure this helps a lot of people around the world since this is a problem occuring everywhere. I think this should be added to the documentation:

[ceph-users] Re: Multi-active MDS cache pressure

2022-08-09 Thread Eugen Block
Hi, did you have some success with modifying the mentioned values? yes, the SUSE team helped identifying the issue, I can share the explanation: ---snip--- Every second (mds_cache_trim_interval config param) the mds is running "cache trim" procedure. One of the steps of this procedure is

[ceph-users] Re: Multi-active MDS cache pressure

2022-08-08 Thread Malte Stroem
Hello Eugen, did you have some success with modifying the mentioned values? Or some others from: https://docs.ceph.com/en/latest/cephfs/cache-configuration/ Best, Malte Am 15.06.22 um 14:12 schrieb Eugen Block: Hi *, I finally caught some debug logs during the cache pressure warnings. In

[ceph-users] Re: Multi-active MDS cache pressure

2022-06-15 Thread Eugen Block
Hi *, I finally caught some debug logs during the cache pressure warnings. In the meantime I had doubled the mds_cache_memory_limit to 128 GB which decreased the number cache pressure messages significantly, but they still appear a few times per day. Turning on debug logs for a few