I restarted all of our osd nodes last week and observed it on all of them. They are also fairly balanced. I have really no idea WHY this happens.
Am 14.06.2020 um 22:36 schrieb Frank R <frankaritchie@gmail.com>:
I have seen this when there is one OSD on the node being rebooted that is using more space than the others. Max avail for the pool is based on the fullest OSD as far as I know.
On Sun, Jun 14, 2020 at 4:29 PM KervyN <bb@kervyn.de> wrote:
Does someone got any ideas on this?
The mgr nodes are separate, pg_autoscaler is also not active (I don‘t know how the impact will be on a 1pb storage), and it also happens when I turn of an osd service on any node.
it’s the latest ceph nautilus.
Cheers - Boris
Am 28.05.2020 um 23:42 schrieb Boris Behrens <bb@kervyn.de>:
Dear people on this mailing list,
I've got the "problem" that our MAX AVAIL value increases by about 5-10 TB when I reboot a whole OSD node. After the reboot the value goes back to normal.
I would love to know WHY.
Under normal circumstances I would ignore this behavior, but because I am very new to the whole ceph software I would like to know why stuff like this happens. What I read is, that this value will be calculated by the most filled OSD.
I've set noout and norebalance while the node is offline and I unset both values after the reboot.
We are currently on nautilus.
Cheers and thanks in advance Boris
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