`ceph pg stat` might be cleaner to watch than the `ceph status | grep pgs`. I also like watching `ceph osd pool stats` which breaks down all IO by pool. You also have the option of the dashboard mgr service which has a lot of useful information including the pool IO breakdown.
On Thu, Mar 1, 2018 at 7:22 AM Georgios Dimitrakakis <gior...@acmac.uoc.gr> wrote: > > Excellent! Good to know that the behavior is intentional! > > Thanks a lot John for the feedback! > > Best regards, > > G. > > > On Thu, Mar 1, 2018 at 12:03 PM, Georgios Dimitrakakis > > <gior...@acmac.uoc.gr> wrote: > >> I have recently updated to Luminous (12.2.4) and I have noticed that > >> using > >> "ceph -w" only produces an initial output like the one below but > >> never gets > >> updated afterwards. Is this a feature because I was used to the old > >> way that > >> was constantly > >> producing info. > > > > It's intentional. "ceph -w" is the command that follows the Ceph > > cluster log. The monitor used to dump the pg status into the cluster > > log every 5 seconds, which was useful sometimes, but also made the > > log > > pretty unreadable for anything else, because other output was quickly > > swamped with the pg status spam. > > > > To replicate the de-facto old behaviour (print the pg status every 5 > > seconds), you can always do something like `watch -n1 "ceph status | > > grep pgs"` > > > > There's work ongoing to create a nice replacement that does a status > > stream without spamming the cluster log to accomplish it here: > > https://github.com/ceph/ceph/pull/20100 > > > > Cheers, > > John > > > >> > >> Here is what I get as initial output which is not updated: > >> > >> $ ceph -w > >> cluster: > >> id: d357a551-5b7a-4501-8d8f-009c63b2c972 > >> health: HEALTH_OK > >> > >> services: > >> mon: 1 daemons, quorum node1 > >> mgr: node1(active) > >> osd: 2 osds: 2 up, 2 in > >> rgw: 1 daemon active > >> > >> data: > >> pools: 11 pools, 152 pgs > >> objects: 9786 objects, 33754 MB > >> usage: 67494 MB used, 3648 GB / 3714 GB avail > >> pgs: 152 active+clean > >> > >> > >> > >> Even if I create a new volume in my Openstack installation, assign > >> it to a > >> VM, mount it and format it, I have to stop and re-execute the "ceph > >> -w" > >> command to see the following line: > >> > >> > >> io: > >> client: 767 B/s rd, 511 B/s wr, 0 op/s rd, 0 op/s wr > >> > >> which also pauses after the first display. > >> > >> > >> Kind regards, > >> > >> > >> G. > >> _______________________________________________ > >> ceph-users mailing list > >> ceph-users@lists.ceph.com > >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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