Hi John Spray,
Now I am able to update the max_misplaced parameter successfully and
validating it.
We are using balancer with mode upmap and it starts redistributing the PGs.
We observed like the backfilling wait increases a lot , can we create any
plan in balancer to restrict the PG backfilling wait and inject PG
redistribution in a controlled way or any throttle mechanism we can add to
the balancer.
cluster:
id: 82691def-be37-4209-9872-141be7954791
health: HEALTH_WARN
492230/67412085 objects misplaced (0.730%)
services:
mon: 3 daemons, quorum SGI-CN1,SGI-CN2,SGI-CN3
mgr: SGI-CN2(active), standbys: SGI-CN3, SGI-CN1
osd: 120 osds: 120 up, 120 in; 40 remapped pgs
data:
pools: 1 pools, 4096 pgs
objects: 21944k objects, 236 TB
usage: 357 TB used, 297 TB / 654 TB avail
pgs: 492230/67412085 objects misplaced (0.730%)
4056 active+clean
34 active+remapped+backfill_wait
6 active+remapped+backfilling
increases over time..
pgs: 756333/68870031 objects misplaced (1.098%)
4026 active+clean
59 active+remapped+backfill_wait
11 active+remapped+backfilling
Thanks,
Muthu
On Fri, Apr 27, 2018 at 7:54 PM, John Spray <[email protected]> wrote:
> On Fri, Apr 27, 2018 at 7:03 AM, nokia ceph <[email protected]>
> wrote:
> > Hi Team,
> >
> > I was trying to modify the max_misplaced parameter in 12.2.4 as per
> > documentation , however not able to modify it with following error,
> >
> > #ceph config set mgr mgr/balancer/max_misplaced .06
> > Invalid command: unused arguments: [u'.06']
> > config set <key> <value> : Set a configuration option at runtime (not
> > persistent)
> > Error EINVAL: invalid command
>
> Oops - the docs were added recently for the master branch, and there
> isn't a luminous version online. I suspect you won't be the last
> person to be caught out by this, so I've created a backport of the
> luminous-era commands here that will pop up on
> docs.ceph.com/docs/luminous when it's merged --
> https://github.com/ceph/ceph/pull/21699/files
>
> Anyway: the command in 12.x is "ceph config-key set
> mgr/balancer/max_misplaced ..."
>
> > Also, where I can find the balancer module configuration file , not
> > available in /var/lib/ceph/mgr
>
> ceph-mgr module config is not stored in local files -- their
> configuration is stored inside the monitors + accessed with commands.
>
> The module config in mimic is mostly unified with the main ceph store
> of configuration, so setting module config via ceph.conf may become
> possible soon, but commands are always preferable because they give us
> a chance to validate the values on the way in and give feedback.
>
> John
>
> >
> > cn6.chn6m1c1ru1c1.cdn ~# cd /var/lib/ceph/mgr/
> > cn6.chn6m1c1ru1c1.cdn /var/lib/ceph/mgr# ls
> > cn6.chn6m1c1ru1c1.cdn /var/lib/ceph/mgr#
> >
> > Thanks,
> > Muthu
> >
> > _______________________________________________
> > ceph-users mailing list
> > [email protected]
> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
> >
>
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