maybe the default value is ok, I think set it to 1 is too aggressive.
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Seems like tested on nautilus but I still see commits last month so I guess it
is good with octopus.
From: Matt Vandermeulen
Sent: Wednesday, August 30, 2023 12:44 AM
To: Szabo, Istvan (Agoda)
Cc: Ceph Users
Subject: Re: [ceph-users] Is there any way to fine
I'm using upmap with max deviation 1, maybe is it too aggressive?
From: Louis Koo
Sent: Wednesday, August 30, 2023 4:17 AM
To: ceph-users@ceph.io
Subject: [ceph-users] Re: Is there any way to fine tune peering/pg
relocation/rebalance?
Email received from
The "osdmaptool" can be used.
like this:
$ ceph osd getmap -o om
$ osdmaptool om --upmap out.txt --upmap-pool xxx --upmap-deviation 5
--upmap-max 10
$ cat out.txt
$ source out.txt
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We have had success using pgremapper[1] for this sort of thing, in both
index and data augments.
1. Set nobackfill, norebalance
2. Add OSDs
3. pgremapper cancel-backfill
4. Unset flags
5. Slowly loop `pgremapper undo-upmaps` at our desired rate, or allow
the balancer to do this work
There's
