[ceph-users] Re: "ceph fs perf stats" and "cephfs-top" don't work

2021-07-15 Thread Eugen Block
Hi, I just setup a virtual one-node cluster (16.2.5) to check out cephfs-top. Regarding the number of clients I was a little surprised, too, in the first couple of minutes the number switched back and forth between 0 and 1 although I had not connected any client yet. But after a while the

[ceph-users] Re: "ceph fs perf stats" and "cephfs-top" don't work

2021-07-15 Thread Jos Collin
Contradicting outputs, it seems immediate ones. You need to wait for a few seconds for the 'perf stats' (and of-course the cephfs-top) to display the correct the metrics. I hope you have ongoing IO while running 'perf stats' and cephfs-top. What is your kernel version? On 15/07/21 5:17 pm, Eug

[ceph-users] Re: "ceph fs perf stats" and "cephfs-top" don't work

2021-07-15 Thread Venky Shankar
On Thu, Jul 15, 2021 at 5:18 PM Eugen Block wrote: > > Hi, > > I just setup a virtual one-node cluster (16.2.5) to check out > cephfs-top. Regarding the number of clients I was a little surprised, > too, in the first couple of minutes the number switched back and forth > between 0 and 1 although I

[ceph-users] Re: "ceph fs perf stats" and "cephfs-top" don't work

2021-07-15 Thread Erwin Bogaard
If I run the commands now, I still don't get any information returned with ceph fs perf stats. cephfs-top still says there is no cluster ceph. The clients are all el7 & el8 kernel clients and show up in the Dashboard. When I execute "ceph tell mds. client ls", I can see all clients are there. For

[ceph-users] Re: "ceph fs perf stats" and "cephfs-top" don't work

2021-07-15 Thread Eugen Block
Hi, please find my 'client ls' output at the end. I was quite patient, I waited for an hour or two, and tried it again this morning. I copy a couple of GB into cephfs which takes quite a while so there is something like a constant stream of data. This is also visible in the daemonperf outp

[ceph-users] Re: "ceph fs perf stats" and "cephfs-top" don't work

2021-07-16 Thread Jos Collin
On 14/07/21 1:20 pm, Erwin Bogaard wrote: Hi, I just upgraded our cluster to pacific 16.2.5. As I'm curious what cephfs-top could give for insights, I followed the steps in the documentation. After enabling the mgr module "stats": # ceph mgr module ls ... "enabled_modules": [ "

[ceph-users] Re: "ceph fs perf stats" and "cephfs-top" don't work

2021-07-19 Thread Erwin Bogaard
Regarding: "Probably there is no IO" When I check "ceph -s", it says there is activity. Not much, but some activity: io: client: 316 KiB/s rd, 10 KiB/s wr, 1 op/s rd, 1 op/s wr And no activity doesn't explain why cephfs-top complains about not finding the cluster. Re: using the options a