Hi,
has no one a idea what could cause this issue. Or how I could debug it?
In some days I have to go live with this cluster. If I don't have a
solution I have to go live with nautilus.
Manuel
On Mon, 7 Jun 2021 15:46:18 +0200
Manuel Lausch <manuel.lausch(a)1und1.de> wrote:
Hello,
I implemented a new cluster with 48 Nodes á 24 OSDs.
I have a replicated pool with 4 replica. The crushrule distributes the
replicas to different racks.
With this cluster I tested a upgrade from Nautilis (14.2.20) to
Octopus (15.2.13). The update itself worked well until I began the
restarts of the OSDs in the 4th rack. Since then I get slow ops while
stopping OSDs. I think something happend here, after all replica
partners are running on the new version. This issue remains after
completing the upgrade.
With Nautilus I had similar issues with slow ops when stopping OSDs. I
could resolve this with the option „osd_fast_shutdown → false“. I let
this option set to false while upgrading. For testing/debugging, I set
this to true (default value) and got better results when stopping
OSDs, but the problem is not completely vanished.
Had someone else this problem and could fix it? What can I do to get
rid of slow ops when resarting OSDs?
All Servers are connected with 2x10G network links
Manuel
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