[ceph-users] How to change the pg numbers

Hi guys, I have a rbd pool pg_num 2048, I want to change it to 4096,  how can I do this? If I change it directly to 4096, it may cause the client slow requests, What the better step size should be? Thanks, Kern ___ ceph-users mailing list -- ceph-use

[ceph-users] Re: How to change the pg numbers

I don't think it might lead to more client slow requests if you set it to 4096 in one step, since there is a cap on how many recovery/backfill requests there can be per OSD at any given time. I am not sure though, but I am happy to be proved wrong by the senior members in this list :) Hans

[ceph-users] Re: OSDs get full with bluestore logs

It says: FAILED assert(0 == "bluefs enospc") Could it be that the OSD disks you use are very very small? Den mån 17 aug. 2020 kl 20:26 skrev Khodayar Doustar : > Hi, > > I have a 3 node cluster of mimic with 9 osds (3 osds on each node). > I use this cluster to test integration of an applicati

[ceph-users] Re: How to change the pg numbers

On 2020-08-18 11:13, Hans van den Bogert wrote: > I don't think it might lead to more client slow requests if you set it > to 4096 in one step, since there is a cap on how many recovery/backfill > requests there can be per OSD at any given time. > > I am not sure though, but I am happy to be prove

[ceph-users] fio rados ioengine

Hi all, When testing with the fio rados ioengine is it necessary to run a write test with the no-cleanup option before running read tests like is required with rados bench? thx Frank ___ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send

[ceph-users] radosgw beast access logs

Are there any plans to add access logs to the beast frontend, in the same way we can get with civetweb? Increasing the "debug rgw" setting really doesn't provide the same thing. Graham -- Graham Allan - g...@umn.edu Associate Director of Operations - Minnesota Supercomputing Institute _

[ceph-users] why ceph-fuse init Objecter with osd_timeout = 0

Hi all I'm using the mimic-13.2.4 version and ceph-fuse as client. Recently I'm suffering a strange problem: on client machine we can see the tcp has ESTAB state to osd machine, but on osd machine nothing could be found. Then the client hangs on read/write requests from this osd So I'm trying to f

[ceph-users] Re: How to change the pg numbers

A few years ago Dan van der Ster and I were working on two similar scripts for increasing pgs. Just have a look at the following link: https://github.com/cernceph/ceph-scripts/blob/master/tools/split/ceph-gentle-split ___ Clyso GmbH Am 18.08.2020 um 11:27

[ceph-users] Alpine linux librados-dev missing

I am not sure if I should try this, but I was trying to build this dovecot-ceph-plugin plugin on alpine linux to create a nice small container image. However alpine linux does not seem to have librados-dev. Did any one do something similar, and have a workaround for this? ___

[ceph-users] Re: How to change the pg numbers

Hans, I made a big change in my staging cluster before, I set a pool pg_num from 8 to 2048, it cased the cluster available for a long time :( On 18/8/2020 下午5:13, Hans van den Bogert wrote: I don't think it might lead to more client slow requests if you set it to 4096 in one step, since there i

[ceph-users] Re: How to change the pg numbers

Stefan, I agree with you about the crush rule,  but I truely met the problem for the cluster, I set the values large for a quick recover: osd_recovery_max_active 16 osd_max_backfills 32 Is it a very bad setting? Kern On 18/8/2020 下午5:27, Stefan Kooman wrote: On 2020-08-18 11:13, Hans van

[ceph-users] cephadm not working with non-root user

Hi, I am trying to install ceph 'octopus' using cephadm. In bootstrap command, I have specified a non-root user account as ssh-user. cephadm bootstrap --mon-ip xx.xxx.xx.xx --ssh-user non-rootuser when bootstrap about to complete it threw an error stating. INFO:cephadm:Non-zero exit code 2

[ceph-users] Re: How to change the pg numbers

I set the values large for a quick recover: osd_recovery_max_active 16 osd_max_backfills 32 Is it a very bad setting? Only bad for the clients. ;-) As Stefan already advised, turn down these values to 1 and let the cluster rebalance slowly. If the client performance seems fine you can inc

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