I would just set noout for the duration of the reboot no other flags really needed. There is a better option to limit that flag to just the host being rebooted. which is "set-group noout <host>" where <host> is the servers name in CRUSH. Just the global noout will suffice though. Anyways... your not scrubbed in time warnings arent going away anytime in the short term until you finish the pg split. In fact, they will get more numerous until the pg split finishes (did you start that?). If you want to get rid of the "cosmetic" issue of the warning you can adjust the interval in which the warning comes up, but I would suggest you leave it since you are trying to address the root of the situation and want to see the resolution. Respectfully, *Wes Dillingham* wes@xxxxxxxxxxxxxxxxx LinkedIn <http://www.linkedin.com/in/wesleydillingham> On Thu, Feb 1, 2024 at 9:16 AM Michel Niyoyita <micou12@xxxxxxxxx> wrote: > And as said before still it is in warning state with pgs not deep-scrubed > in time . Hope this can be ignored and set those two flags "noout and > nobackfill" then reboot . > > Thank you again Sir > > On Thu, 1 Feb 2024, 16:11 Michel Niyoyita, <micou12@xxxxxxxxx> wrote: > >> Thank you very much Janne. >> >> On Thu, 1 Feb 2024, 15:21 Janne Johansson, <icepic.dz@xxxxxxxxx> wrote: >> >>> pause and nodown is not a good option to set, that will certainly make >>> clients stop IO. Pause will stop it immediately, and nodown will stop >>> IO when the OSD processes stop running on this host. >>> >>> When we do service on a host, we set "noout" and "nobackfill", that is >>> enough for reboots, OS upgrades and simple disk exchanges. >>> The PGs on this one host will be degraded during the down period, but >>> IO continues. >>> Of course this is when the cluster was healthy to begin with (not >>> counting "not scrubbed in time" warnings, they don't matter in this >>> case.) >>> >>> >>> >>> Den tors 1 feb. 2024 kl 12:21 skrev Michel Niyoyita <micou12@xxxxxxxxx>: >>> > >>> > Thanks Very much Wesley, >>> > >>> > We have decided to restart one host among three osds hosts. before >>> doing >>> > that I need the advices of the team . these are flags I want to set >>> before >>> > restart. >>> > >>> > 'ceph osd set noout' >>> > 'ceph osd set nobackfill' >>> > 'ceph osd set norecover' >>> > 'ceph osd set norebalance' >>> > 'ceph osd set nodown' >>> > 'ceph osd set pause' >>> > 'ceph osd set nodeep-scrub' >>> > 'ceph osd set noscrub' >>> > >>> > >>> > Would like to ask if this can be enough to set and restart the host >>> safely >>> > . the cluster has 3 as replicas. >>> > >>> > will the cluster still be accessible while restart the hosts? after >>> > restarting I will unset the flags. >>> > >>> > Kindly advise. >>> > >>> > Michel >>> > >>> > >>> > On Tue, 30 Jan 2024, 17:44 Wesley Dillingham, <wes@xxxxxxxxxxxxxxxxx> >>> wrote: >>> > >>> > > actually it seems the issue I had in mind was fixed in 16.2.11 so you >>> > > should be fine. >>> > > >>> > > Respectfully, >>> > > >>> > > *Wes Dillingham* >>> > > wes@xxxxxxxxxxxxxxxxx >>> > > LinkedIn <http://www.linkedin.com/in/wesleydillingham> >>> > > >>> > > >>> > > On Tue, Jan 30, 2024 at 10:34 AM Wesley Dillingham < >>> wes@xxxxxxxxxxxxxxxxx> >>> > > wrote: >>> > > >>> > >> You may want to consider upgrading to 16.2.14 before you do the pg >>> split. >>> > >> >>> > >> Respectfully, >>> > >> >>> > >> *Wes Dillingham* >>> > >> wes@xxxxxxxxxxxxxxxxx >>> > >> LinkedIn <http://www.linkedin.com/in/wesleydillingham> >>> > >> >>> > >> >>> > >> On Tue, Jan 30, 2024 at 10:18 AM Michel Niyoyita <micou12@xxxxxxxxx >>> > >>> > >> wrote: >>> > >> >>> > >>> I tried that on one of my pool (pool id 3) but the number of pgs >>> not >>> > >>> deep-scrubbed in time increased also from 55 to 100 but the number >>> of PGs >>> > >>> was increased. I set also autoscale to off mode. before continue >>> to other >>> > >>> pools would like to ask if so far there is no negative impact. >>> > >>> >>> > >>> ceph -s >>> > >>> cluster: >>> > >>> id: cb0caedc-eb5b-42d1-a34f-96facfda8c27 >>> > >>> health: HEALTH_WARN >>> > >>> 100 pgs not deep-scrubbed in time >>> > >>> >>> > >>> services: >>> > >>> mon: 3 daemons, quorum ceph-mon1,ceph-mon2,ceph-mon3 (age 11M) >>> > >>> mgr: ceph-mon2(active, since 11M), standbys: ceph-mon3, >>> ceph-mon1 >>> > >>> osd: 48 osds: 48 up (since 11M), 48 in (since 12M) >>> > >>> rgw: 6 daemons active (6 hosts, 1 zones) >>> > >>> >>> > >>> data: >>> > >>> pools: 10 pools, 609 pgs >>> > >>> objects: 6.03M objects, 23 TiB >>> > >>> usage: 151 TiB used, 282 TiB / 433 TiB avail >>> > >>> pgs: 603 active+clean >>> > >>> 4 active+clean+scrubbing+deep >>> > >>> 2 active+clean+scrubbing >>> > >>> >>> > >>> io: >>> > >>> client: 96 MiB/s rd, 573 MiB/s wr, 576 op/s rd, 648 op/s wr >>> > >>> >>> > >>> root@ceph-osd3:/var/log# ceph df >>> > >>> --- RAW STORAGE --- >>> > >>> CLASS SIZE AVAIL USED RAW USED %RAW USED >>> > >>> hdd 433 TiB 282 TiB 151 TiB 151 TiB 34.93 >>> > >>> TOTAL 433 TiB 282 TiB 151 TiB 151 TiB 34.93 >>> > >>> >>> > >>> --- POOLS --- >>> > >>> POOL ID PGS STORED OBJECTS USED %USED >>> MAX >>> > >>> AVAIL >>> > >>> device_health_metrics 1 1 1.1 MiB 3 3.2 MiB 0 >>> 72 >>> > >>> TiB >>> > >>> .rgw.root 2 32 3.7 KiB 8 96 KiB 0 >>> 72 >>> > >>> TiB >>> > >>> default.rgw.log 3 256 3.6 KiB 204 408 KiB 0 >>> 72 >>> > >>> TiB >>> > >>> default.rgw.control 4 32 0 B 8 0 B 0 >>> 72 >>> > >>> TiB >>> > >>> default.rgw.meta 5 32 382 B 2 24 KiB 0 >>> 72 >>> > >>> TiB >>> > >>> volumes 6 128 21 TiB 5.74M 62 TiB 22.30 >>> 72 >>> > >>> TiB >>> > >>> images 7 32 878 GiB 112.50k 2.6 TiB 1.17 >>> 72 >>> > >>> TiB >>> > >>> backups 8 32 0 B 0 0 B 0 >>> 72 >>> > >>> TiB >>> > >>> vms 9 32 870 GiB 170.73k 2.5 TiB 1.13 >>> 72 >>> > >>> TiB >>> > >>> testbench 10 32 0 B 0 0 B 0 >>> 72 >>> > >>> TiB >>> > >>> >>> > >>> On Tue, Jan 30, 2024 at 5:05 PM Wesley Dillingham < >>> wes@xxxxxxxxxxxxxxxxx> >>> > >>> wrote: >>> > >>> >>> > >>>> It will take a couple weeks to a couple months to complete is my >>> best >>> > >>>> guess on 10TB spinners at ~40% full. The cluster should be usable >>> > >>>> throughout the process. >>> > >>>> >>> > >>>> Keep in mind, you should disable the pg autoscaler on any pool >>> which >>> > >>>> you are manually adjusting the pg_num for. Increasing the pg_num >>> is called >>> > >>>> "pg splitting" you can google around for this to see how it will >>> work etc. >>> > >>>> >>> > >>>> There are a few knobs to increase or decrease the aggressiveness >>> of the >>> > >>>> pg split, primarily these are osd_max_backfills and >>> > >>>> target_max_misplaced_ratio. >>> > >>>> >>> > >>>> You can monitor the progress of the split by looking at "ceph osd >>> pool >>> > >>>> ls detail" for the pool you are splitting, for this pool pgp_num >>> will >>> > >>>> slowly increase up until it reaches the pg_num / pg_num_target. >>> > >>>> >>> > >>>> IMO this blog post best covers the issue which you are looking to >>> > >>>> undertake: >>> > >>>> >>> https://ceph.io/en/news/blog/2019/new-in-nautilus-pg-merging-and-autotuning/ >>> > >>>> >>> > >>>> Respectfully, >>> > >>>> >>> > >>>> *Wes Dillingham* >>> > >>>> wes@xxxxxxxxxxxxxxxxx >>> > >>>> LinkedIn <http://www.linkedin.com/in/wesleydillingham> >>> > >>>> >>> > >>>> >>> > >>>> On Tue, Jan 30, 2024 at 9:38 AM Michel Niyoyita < >>> micou12@xxxxxxxxx> >>> > >>>> wrote: >>> > >>>> >>> > >>>>> Thanks for your advices Wes, below is what ceph osd df tree >>> shows , >>> > >>>>> the increase of pg_num of the production cluster will not affect >>> the >>> > >>>>> performance or crush ? how long it can takes to finish? >>> > >>>>> >>> > >>>>> ceph osd df tree >>> > >>>>> ID CLASS WEIGHT REWEIGHT SIZE RAW USE DATA OMAP >>> > >>>>> META AVAIL %USE VAR PGS STATUS TYPE NAME >>> > >>>>> -1 433.11841 - 433 TiB 151 TiB 67 TiB 364 >>> MiB >>> > >>>>> 210 GiB 282 TiB 34.86 1.00 - root default >>> > >>>>> -3 144.37280 - 144 TiB 50 TiB 22 TiB 121 >>> MiB >>> > >>>>> 70 GiB 94 TiB 34.86 1.00 - host ceph-osd1 >>> > >>>>> 2 hdd 9.02330 1.00000 9.0 TiB 2.7 TiB 1021 GiB 5.4 >>> MiB >>> > >>>>> 3.7 GiB 6.3 TiB 30.40 0.87 19 up osd.2 >>> > >>>>> 3 hdd 9.02330 1.00000 9.0 TiB 2.7 TiB 931 GiB 4.1 >>> MiB >>> > >>>>> 3.5 GiB 6.4 TiB 29.43 0.84 29 up osd.3 >>> > >>>>> 6 hdd 9.02330 1.00000 9.0 TiB 3.3 TiB 1.5 TiB 8.1 >>> MiB >>> > >>>>> 4.5 GiB 5.8 TiB 36.09 1.04 20 up osd.6 >>> > >>>>> 9 hdd 9.02330 1.00000 9.0 TiB 2.8 TiB 1.0 TiB 6.6 >>> MiB >>> > >>>>> 3.8 GiB 6.2 TiB 30.97 0.89 23 up osd.9 >>> > >>>>> 12 hdd 9.02330 1.00000 9.0 TiB 4.0 TiB 2.3 TiB 13 >>> MiB >>> > >>>>> 6.1 GiB 5.0 TiB 44.68 1.28 30 up osd.12 >>> > >>>>> 15 hdd 9.02330 1.00000 9.0 TiB 3.5 TiB 1.8 TiB 9.2 >>> MiB >>> > >>>>> 5.2 GiB 5.5 TiB 38.99 1.12 30 up osd.15 >>> > >>>>> 18 hdd 9.02330 1.00000 9.0 TiB 3.0 TiB 1.2 TiB 6.5 >>> MiB >>> > >>>>> 4.0 GiB 6.1 TiB 32.80 0.94 21 up osd.18 >>> > >>>>> 22 hdd 9.02330 1.00000 9.0 TiB 3.6 TiB 1.9 TiB 10 >>> MiB >>> > >>>>> 5.4 GiB 5.4 TiB 40.25 1.15 22 up osd.22 >>> > >>>>> 25 hdd 9.02330 1.00000 9.0 TiB 3.9 TiB 2.1 TiB 12 >>> MiB >>> > >>>>> 5.7 GiB 5.1 TiB 42.94 1.23 22 up osd.25 >>> > >>>>> 28 hdd 9.02330 1.00000 9.0 TiB 3.1 TiB 1.4 TiB 7.5 >>> MiB >>> > >>>>> 4.1 GiB 5.9 TiB 34.87 1.00 21 up osd.28 >>> > >>>>> 32 hdd 9.02330 1.00000 9.0 TiB 2.7 TiB 1017 GiB 4.8 >>> MiB >>> > >>>>> 3.7 GiB 6.3 TiB 30.36 0.87 27 up osd.32 >>> > >>>>> 35 hdd 9.02330 1.00000 9.0 TiB 3.0 TiB 1.3 TiB 7.2 >>> MiB >>> > >>>>> 4.2 GiB 6.0 TiB 33.73 0.97 21 up osd.35 >>> > >>>>> 38 hdd 9.02330 1.00000 9.0 TiB 3.1 TiB 1.4 TiB 7.3 >>> MiB >>> > >>>>> 4.1 GiB 5.9 TiB 34.57 0.99 24 up osd.38 >>> > >>>>> 41 hdd 9.02330 1.00000 9.0 TiB 2.9 TiB 1.2 TiB 6.2 >>> MiB >>> > >>>>> 4.0 GiB 6.1 TiB 32.49 0.93 24 up osd.41 >>> > >>>>> 44 hdd 9.02330 1.00000 9.0 TiB 3.1 TiB 1.4 TiB 7.3 >>> MiB >>> > >>>>> 4.4 GiB 5.9 TiB 34.87 1.00 29 up osd.44 >>> > >>>>> 47 hdd 9.02330 1.00000 9.0 TiB 2.7 TiB 1016 GiB 5.4 >>> MiB >>> > >>>>> 3.6 GiB 6.3 TiB 30.35 0.87 23 up osd.47 >>> > >>>>> -7 144.37280 - 144 TiB 50 TiB 22 TiB 122 >>> MiB >>> > >>>>> 70 GiB 94 TiB 34.86 1.00 - host ceph-osd2 >>> > >>>>> 1 hdd 9.02330 1.00000 9.0 TiB 2.8 TiB 1.1 TiB 5.7 >>> MiB >>> > >>>>> 3.8 GiB 6.2 TiB 31.00 0.89 27 up osd.1 >>> > >>>>> 5 hdd 9.02330 1.00000 9.0 TiB 3.2 TiB 1.5 TiB 7.3 >>> MiB >>> > >>>>> 4.5 GiB 5.8 TiB 35.45 1.02 27 up osd.5 >>> > >>>>> 8 hdd 9.02330 1.00000 9.0 TiB 3.3 TiB 1.6 TiB 8.3 >>> MiB >>> > >>>>> 4.7 GiB 5.7 TiB 36.85 1.06 30 up osd.8 >>> > >>>>> 10 hdd 9.02330 1.00000 9.0 TiB 3.1 TiB 1.4 TiB 7.5 >>> MiB >>> > >>>>> 4.5 GiB 5.9 TiB 34.87 1.00 20 up osd.10 >>> > >>>>> 13 hdd 9.02330 1.00000 9.0 TiB 3.6 TiB 1.8 TiB 10 >>> MiB >>> > >>>>> 5.3 GiB 5.4 TiB 39.63 1.14 27 up osd.13 >>> > >>>>> 16 hdd 9.02330 1.00000 9.0 TiB 2.8 TiB 1.1 TiB 6.0 >>> MiB >>> > >>>>> 3.8 GiB 6.2 TiB 31.01 0.89 19 up osd.16 >>> > >>>>> 19 hdd 9.02330 1.00000 9.0 TiB 3.0 TiB 1.2 TiB 6.4 >>> MiB >>> > >>>>> 4.0 GiB 6.1 TiB 32.77 0.94 21 up osd.19 >>> > >>>>> 21 hdd 9.02330 1.00000 9.0 TiB 2.8 TiB 1.1 TiB 5.5 >>> MiB >>> > >>>>> 3.7 GiB 6.2 TiB 31.58 0.91 26 up osd.21 >>> > >>>>> 24 hdd 9.02330 1.00000 9.0 TiB 2.6 TiB 855 GiB 4.7 >>> MiB >>> > >>>>> 3.3 GiB 6.4 TiB 28.61 0.82 19 up osd.24 >>> > >>>>> 27 hdd 9.02330 1.00000 9.0 TiB 3.7 TiB 1.9 TiB 10 >>> MiB >>> > >>>>> 5.2 GiB 5.3 TiB 40.84 1.17 24 up osd.27 >>> > >>>>> 30 hdd 9.02330 1.00000 9.0 TiB 3.2 TiB 1.4 TiB 7.5 >>> MiB >>> > >>>>> 4.5 GiB 5.9 TiB 35.16 1.01 22 up osd.30 >>> > >>>>> 33 hdd 9.02330 1.00000 9.0 TiB 3.1 TiB 1.4 TiB 8.6 >>> MiB >>> > >>>>> 4.3 GiB 5.9 TiB 34.59 0.99 23 up osd.33 >>> > >>>>> 36 hdd 9.02330 1.00000 9.0 TiB 3.4 TiB 1.7 TiB 10 >>> MiB >>> > >>>>> 5.0 GiB 5.6 TiB 38.17 1.09 25 up osd.36 >>> > >>>>> 39 hdd 9.02330 1.00000 9.0 TiB 3.4 TiB 1.7 TiB 8.5 >>> MiB >>> > >>>>> 5.1 GiB 5.6 TiB 37.79 1.08 31 up osd.39 >>> > >>>>> 42 hdd 9.02330 1.00000 9.0 TiB 3.6 TiB 1.8 TiB 10 >>> MiB >>> > >>>>> 5.2 GiB 5.4 TiB 39.68 1.14 23 up osd.42 >>> > >>>>> 45 hdd 9.02330 1.00000 9.0 TiB 2.7 TiB 964 GiB 5.1 >>> MiB >>> > >>>>> 3.5 GiB 6.3 TiB 29.78 0.85 21 up osd.45 >>> > >>>>> -5 144.37280 - 144 TiB 50 TiB 22 TiB 121 >>> MiB >>> > >>>>> 70 GiB 94 TiB 34.86 1.00 - host ceph-osd3 >>> > >>>>> 0 hdd 9.02330 1.00000 9.0 TiB 2.7 TiB 934 GiB 4.9 >>> MiB >>> > >>>>> 3.4 GiB 6.4 TiB 29.47 0.85 21 up osd.0 >>> > >>>>> 4 hdd 9.02330 1.00000 9.0 TiB 3.0 TiB 1.2 TiB 6.5 >>> MiB >>> > >>>>> 4.1 GiB 6.1 TiB 32.73 0.94 22 up osd.4 >>> > >>>>> 7 hdd 9.02330 1.00000 9.0 TiB 3.5 TiB 1.8 TiB 9.2 >>> MiB >>> > >>>>> 5.1 GiB 5.5 TiB 39.02 1.12 30 up osd.7 >>> > >>>>> 11 hdd 9.02330 1.00000 9.0 TiB 3.6 TiB 1.9 TiB 10 >>> MiB >>> > >>>>> 5.1 GiB 5.4 TiB 39.97 1.15 27 up osd.11 >>> > >>>>> 14 hdd 9.02330 1.00000 9.0 TiB 3.5 TiB 1.7 TiB 10 >>> MiB >>> > >>>>> 5.1 GiB 5.6 TiB 38.24 1.10 27 up osd.14 >>> > >>>>> 17 hdd 9.02330 1.00000 9.0 TiB 3.0 TiB 1.2 TiB 6.4 >>> MiB >>> > >>>>> 4.1 GiB 6.0 TiB 33.09 0.95 23 up osd.17 >>> > >>>>> 20 hdd 9.02330 1.00000 9.0 TiB 2.8 TiB 1.1 TiB 5.6 >>> MiB >>> > >>>>> 3.8 GiB 6.2 TiB 31.55 0.90 20 up osd.20 >>> > >>>>> 23 hdd 9.02330 1.00000 9.0 TiB 2.6 TiB 828 GiB 4.0 >>> MiB >>> > >>>>> 3.3 GiB 6.5 TiB 28.32 0.81 23 up osd.23 >>> > >>>>> 26 hdd 9.02330 1.00000 9.0 TiB 2.9 TiB 1.2 TiB 5.8 >>> MiB >>> > >>>>> 3.8 GiB 6.1 TiB 32.12 0.92 26 up osd.26 >>> > >>>>> 29 hdd 9.02330 1.00000 9.0 TiB 3.6 TiB 1.8 TiB 10 >>> MiB >>> > >>>>> 5.1 GiB 5.4 TiB 39.73 1.14 24 up osd.29 >>> > >>>>> 31 hdd 9.02330 1.00000 9.0 TiB 2.8 TiB 1.1 TiB 5.8 >>> MiB >>> > >>>>> 3.7 GiB 6.2 TiB 31.56 0.91 22 up osd.31 >>> > >>>>> 34 hdd 9.02330 1.00000 9.0 TiB 3.3 TiB 1.5 TiB 8.2 >>> MiB >>> > >>>>> 4.6 GiB 5.7 TiB 36.29 1.04 23 up osd.34 >>> > >>>>> 37 hdd 9.02330 1.00000 9.0 TiB 3.2 TiB 1.5 TiB 8.2 >>> MiB >>> > >>>>> 4.5 GiB 5.8 TiB 35.51 1.02 20 up osd.37 >>> > >>>>> 40 hdd 9.02330 1.00000 9.0 TiB 3.4 TiB 1.7 TiB 9.3 >>> MiB >>> > >>>>> 4.9 GiB 5.6 TiB 38.16 1.09 25 up osd.40 >>> > >>>>> 43 hdd 9.02330 1.00000 9.0 TiB 3.4 TiB 1.6 TiB 8.5 >>> MiB >>> > >>>>> 4.8 GiB 5.7 TiB 37.19 1.07 29 up osd.43 >>> > >>>>> 46 hdd 9.02330 1.00000 9.0 TiB 3.1 TiB 1.4 TiB 8.4 >>> MiB >>> > >>>>> 4.4 GiB 5.9 TiB 34.85 1.00 23 up osd.46 >>> > >>>>> TOTAL 433 TiB 151 TiB 67 TiB 364 >>> MiB >>> > >>>>> 210 GiB 282 TiB 34.86 >>> > >>>>> MIN/MAX VAR: 0.81/1.28 STDDEV: 3.95 >>> > >>>>> >>> > >>>>> >>> > >>>>> Michel >>> > >>>>> >>> > >>>>> >>> > >>>>> On Tue, Jan 30, 2024 at 4:18 PM Wesley Dillingham < >>> > >>>>> wes@xxxxxxxxxxxxxxxxx> wrote: >>> > >>>>> >>> > >>>>>> I now concur you should increase the pg_num as a first step for >>> this >>> > >>>>>> cluster. Disable the pg autoscaler for and increase the volumes >>> pool to >>> > >>>>>> pg_num 256. Then likely re-asses and make the next power of 2 >>> jump to 512 >>> > >>>>>> and probably beyond. >>> > >>>>>> >>> > >>>>>> Keep in mind this is not going to fix your short term deep-scrub >>> > >>>>>> issue in fact it will increase the number of not scrubbed in >>> time PGs until >>> > >>>>>> the pg_num change is complete. This is because OSDs dont scrub >>> when they >>> > >>>>>> are backfilling. >>> > >>>>>> >>> > >>>>>> I would sit on 256 for a couple weeks and let scrubs happen then >>> > >>>>>> continue past 256. >>> > >>>>>> >>> > >>>>>> with the ultimate target of around 100-200 PGs per OSD which >>> "ceph >>> > >>>>>> osd df tree" will show you in the PGs column. >>> > >>>>>> >>> > >>>>>> Respectfully, >>> > >>>>>> >>> > >>>>>> *Wes Dillingham* >>> > >>>>>> wes@xxxxxxxxxxxxxxxxx >>> > >>>>>> LinkedIn <http://www.linkedin.com/in/wesleydillingham> >>> > >>>>>> >>> > >>>>>> >>> > >>>>>> On Tue, Jan 30, 2024 at 3:16 AM Michel Niyoyita < >>> micou12@xxxxxxxxx> >>> > >>>>>> wrote: >>> > >>>>>> >>> > >>>>>>> Dear team, >>> > >>>>>>> >>> > >>>>>>> below is the output of ceph df command and the ceph version I >>> am >>> > >>>>>>> running >>> > >>>>>>> >>> > >>>>>>> ceph df >>> > >>>>>>> --- RAW STORAGE --- >>> > >>>>>>> CLASS SIZE AVAIL USED RAW USED %RAW USED >>> > >>>>>>> hdd 433 TiB 282 TiB 151 TiB 151 TiB 34.82 >>> > >>>>>>> TOTAL 433 TiB 282 TiB 151 TiB 151 TiB 34.82 >>> > >>>>>>> >>> > >>>>>>> --- POOLS --- >>> > >>>>>>> POOL ID PGS STORED OBJECTS USED >>> %USED >>> > >>>>>>> MAX AVAIL >>> > >>>>>>> device_health_metrics 1 1 1.1 MiB 3 3.2 MiB >>> 0 >>> > >>>>>>> 73 TiB >>> > >>>>>>> .rgw.root 2 32 3.7 KiB 8 96 KiB >>> 0 >>> > >>>>>>> 73 TiB >>> > >>>>>>> default.rgw.log 3 32 3.6 KiB 209 408 KiB >>> 0 >>> > >>>>>>> 73 TiB >>> > >>>>>>> default.rgw.control 4 32 0 B 8 0 B >>> 0 >>> > >>>>>>> 73 TiB >>> > >>>>>>> default.rgw.meta 5 32 382 B 2 24 KiB >>> 0 >>> > >>>>>>> 73 TiB >>> > >>>>>>> volumes 6 128 21 TiB 5.68M 62 TiB >>> 22.09 >>> > >>>>>>> 73 TiB >>> > >>>>>>> images 7 32 878 GiB 112.50k 2.6 TiB >>> 1.17 >>> > >>>>>>> 73 TiB >>> > >>>>>>> backups 8 32 0 B 0 0 B >>> 0 >>> > >>>>>>> 73 TiB >>> > >>>>>>> vms 9 32 881 GiB 174.30k 2.5 TiB >>> 1.13 >>> > >>>>>>> 73 TiB >>> > >>>>>>> testbench 10 32 0 B 0 0 B >>> 0 >>> > >>>>>>> 73 TiB >>> > >>>>>>> root@ceph-mon1:~# ceph --version >>> > >>>>>>> ceph version 16.2.11 (3cf40e2dca667f68c6ce3ff5cd94f01e711af894) >>> > >>>>>>> pacific >>> > >>>>>>> (stable) >>> > >>>>>>> root@ceph-mon1:~# >>> > >>>>>>> >>> > >>>>>>> please advise accordingly >>> > >>>>>>> >>> > >>>>>>> Michel >>> > >>>>>>> >>> > >>>>>>> On Mon, Jan 29, 2024 at 9:48 PM Frank Schilder <frans@xxxxxx> >>> wrote: >>> > >>>>>>> >>> > >>>>>>> > You will have to look at the output of "ceph df" and make a >>> > >>>>>>> decision to >>> > >>>>>>> > balance "objects per PG" and "GB per PG". Increase he PG >>> count for >>> > >>>>>>> the >>> > >>>>>>> > pools with the worst of these two numbers most such that it >>> > >>>>>>> balances out as >>> > >>>>>>> > much as possible. If you have pools that see significantly >>> more >>> > >>>>>>> user-IO >>> > >>>>>>> > than others, prioritise these. >>> > >>>>>>> > >>> > >>>>>>> > You will have to find out for your specific cluster, we can >>> only >>> > >>>>>>> give >>> > >>>>>>> > general guidelines. Make changes, run benchmarks, >>> re-evaluate. >>> > >>>>>>> Take the >>> > >>>>>>> > time for it. The better you know your cluster and your >>> users, the >>> > >>>>>>> better >>> > >>>>>>> > the end result will be. >>> > >>>>>>> > >>> > >>>>>>> > Best regards, >>> > >>>>>>> > ================= >>> > >>>>>>> > Frank Schilder >>> > >>>>>>> > AIT Risø Campus >>> > >>>>>>> > Bygning 109, rum S14 >>> > >>>>>>> > >>> > >>>>>>> > ________________________________________ >>> > >>>>>>> > From: Michel Niyoyita <micou12@xxxxxxxxx> >>> > >>>>>>> > Sent: Monday, January 29, 2024 2:04 PM >>> > >>>>>>> > To: Janne Johansson >>> > >>>>>>> > Cc: Frank Schilder; E Taka; ceph-users >>> > >>>>>>> > Subject: Re: Re: 6 pgs not deep-scrubbed in time >>> > >>>>>>> > >>> > >>>>>>> > This is how it is set , if you suggest to make some changes >>> please >>> > >>>>>>> advises. >>> > >>>>>>> > >>> > >>>>>>> > Thank you. >>> > >>>>>>> > >>> > >>>>>>> > >>> > >>>>>>> > ceph osd pool ls detail >>> > >>>>>>> > pool 1 'device_health_metrics' replicated size 3 min_size 2 >>> > >>>>>>> crush_rule 0 >>> > >>>>>>> > object_hash rjenkins pg_num 1 pgp_num 1 autoscale_mode on >>> > >>>>>>> last_change 1407 >>> > >>>>>>> > flags hashpspool stripe_width 0 pg_num_max 32 pg_num_min 1 >>> > >>>>>>> application >>> > >>>>>>> > mgr_devicehealth >>> > >>>>>>> > pool 2 '.rgw.root' replicated size 3 min_size 2 crush_rule 0 >>> > >>>>>>> object_hash >>> > >>>>>>> > rjenkins pg_num 32 pgp_num 32 autoscale_mode on last_change >>> 1393 >>> > >>>>>>> flags >>> > >>>>>>> > hashpspool stripe_width 0 application rgw >>> > >>>>>>> > pool 3 'default.rgw.log' replicated size 3 min_size 2 >>> crush_rule 0 >>> > >>>>>>> > object_hash rjenkins pg_num 32 pgp_num 32 autoscale_mode on >>> > >>>>>>> last_change >>> > >>>>>>> > 1394 flags hashpspool stripe_width 0 application rgw >>> > >>>>>>> > pool 4 'default.rgw.control' replicated size 3 min_size 2 >>> > >>>>>>> crush_rule 0 >>> > >>>>>>> > object_hash rjenkins pg_num 32 pgp_num 32 autoscale_mode on >>> > >>>>>>> last_change >>> > >>>>>>> > 1395 flags hashpspool stripe_width 0 application rgw >>> > >>>>>>> > pool 5 'default.rgw.meta' replicated size 3 min_size 2 >>> crush_rule 0 >>> > >>>>>>> > object_hash rjenkins pg_num 32 pgp_num 32 autoscale_mode on >>> > >>>>>>> last_change >>> > >>>>>>> > 1396 flags hashpspool stripe_width 0 pg_autoscale_bias 4 >>> > >>>>>>> application rgw >>> > >>>>>>> > pool 6 'volumes' replicated size 3 min_size 2 crush_rule 0 >>> > >>>>>>> object_hash >>> > >>>>>>> > rjenkins pg_num 128 pgp_num 128 autoscale_mode on last_change >>> > >>>>>>> 108802 lfor >>> > >>>>>>> > 0/0/14812 flags hashpspool,selfmanaged_snaps stripe_width 0 >>> > >>>>>>> application rbd >>> > >>>>>>> > removed_snaps_queue >>> > >>>>>>> > >>> > >>>>>>> >>> [22d7~3,11561~2,11571~1,11573~1c,11594~6,1159b~f,115b0~1,115b3~1,115c3~1,115f3~1,115f5~e,11613~6,1161f~c,11637~1b,11660~1,11663~2,11673~1,116d1~c,116f5~10,11721~c] >>> > >>>>>>> > pool 7 'images' replicated size 3 min_size 2 crush_rule 0 >>> > >>>>>>> object_hash >>> > >>>>>>> > rjenkins pg_num 32 pgp_num 32 autoscale_mode on last_change >>> 94609 >>> > >>>>>>> flags >>> > >>>>>>> > hashpspool,selfmanaged_snaps stripe_width 0 application rbd >>> > >>>>>>> > pool 8 'backups' replicated size 3 min_size 2 crush_rule 0 >>> > >>>>>>> object_hash >>> > >>>>>>> > rjenkins pg_num 32 pgp_num 32 autoscale_mode on last_change >>> 1399 >>> > >>>>>>> flags >>> > >>>>>>> > hashpspool stripe_width 0 application rbd >>> > >>>>>>> > pool 9 'vms' replicated size 3 min_size 2 crush_rule 0 >>> object_hash >>> > >>>>>>> > rjenkins pg_num 32 pgp_num 32 autoscale_mode on last_change >>> 108783 >>> > >>>>>>> lfor >>> > >>>>>>> > 0/561/559 flags hashpspool,selfmanaged_snaps stripe_width 0 >>> > >>>>>>> application rbd >>> > >>>>>>> > removed_snaps_queue [3fa~1,3fc~3,400~1,402~1] >>> > >>>>>>> > pool 10 'testbench' replicated size 3 min_size 2 crush_rule 0 >>> > >>>>>>> object_hash >>> > >>>>>>> > rjenkins pg_num 32 pgp_num 32 autoscale_mode on last_change >>> 20931 >>> > >>>>>>> lfor >>> > >>>>>>> > 0/20931/20929 flags hashpspool stripe_width 0 >>> > >>>>>>> > >>> > >>>>>>> > >>> > >>>>>>> > On Mon, Jan 29, 2024 at 2:09 PM Michel Niyoyita < >>> micou12@xxxxxxxxx >>> > >>>>>>> <mailto: >>> > >>>>>>> > micou12@xxxxxxxxx>> wrote: >>> > >>>>>>> > Thank you Janne , >>> > >>>>>>> > >>> > >>>>>>> > no need of setting some flags like ceph osd set >>> nodeep-scrub ??? >>> > >>>>>>> > >>> > >>>>>>> > Thank you >>> > >>>>>>> > >>> > >>>>>>> > On Mon, Jan 29, 2024 at 2:04 PM Janne Johansson < >>> > >>>>>>> icepic.dz@xxxxxxxxx >>> > >>>>>>> > <mailto:icepic.dz@xxxxxxxxx>> wrote: >>> > >>>>>>> > Den mån 29 jan. 2024 kl 12:58 skrev Michel Niyoyita < >>> > >>>>>>> micou12@xxxxxxxxx >>> > >>>>>>> > <mailto:micou12@xxxxxxxxx>>: >>> > >>>>>>> > > >>> > >>>>>>> > > Thank you Frank , >>> > >>>>>>> > > >>> > >>>>>>> > > All disks are HDDs . Would like to know if I can increase >>> the >>> > >>>>>>> number of >>> > >>>>>>> > PGs >>> > >>>>>>> > > live in production without a negative impact to the >>> cluster. if >>> > >>>>>>> yes which >>> > >>>>>>> > > commands to use . >>> > >>>>>>> > >>> > >>>>>>> > Yes. "ceph osd pool set <poolname> pg_num <number larger than >>> > >>>>>>> before>" >>> > >>>>>>> > where the number usually should be a power of two that leads >>> to a >>> > >>>>>>> > number of PGs per OSD between 100-200. >>> > >>>>>>> > >>> > >>>>>>> > -- >>> > >>>>>>> > May the most significant bit of your life be positive. >>> > >>>>>>> > >>> > >>>>>>> _______________________________________________ >>> > >>>>>>> ceph-users mailing list -- ceph-users@xxxxxxx >>> > >>>>>>> To unsubscribe send an email to ceph-users-leave@xxxxxxx >>> > >>>>>>> >>> > >>>>>> >>> > _______________________________________________ >>> > ceph-users mailing list -- ceph-users@xxxxxxx >>> > To unsubscribe send an email to ceph-users-leave@xxxxxxx >>> >>> >>> >>> -- >>> May the most significant bit of your life be positive. >>> >> _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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