28 Jul
2023
28 Jul
'23
10:13 p.m.
Currently I am checking usage on ssd drives with
ceph osd df| egrep 'CLASS|ssd'
I have a use % between 48% and 57%, and assume that with a node failure 1/3 (only using 3x
repl.) of this 57% needs to be able to migrate and added to a different node.
Is there a better way of checking this (on old Nautilus)?
29 Jul
29 Jul
12:34 p.m.
On Fri, Jul 28, 2023 at 07:13:33PM +0000, Marc wrote:
I have a use % between 48% and 57%, and assume that
with a node failure 1/3 (only using 3x repl.) of this 57% needs to be able to migrate and
added to a different node.
If you by this mean you have 3 nodes with 3x replica and failure domain set to
host, it's my understanding no data will be migrated/backfilled when a node
fails.
The reason is that there is nowhere to copy the data to, to fulfill the crush rule
one copy on 3 different hosts.
--
Kai Stian Olstad
296
days inactive
297
days old
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Kai Stian Olstad -
Marc