On 9/24/21 08:33, Rainer Krienke wrote:
Hallo Dan,
I am also running a productive 14.2.22 Cluster with 144 HDD-OSDs and I
am thinking if I should stay with this release or upgrade to octopus. So
your info is very valuable...
One more question: You described that OSDs do an expected fsck and that
this took roughly 10min. I guess the fsck is done in parallel for all
OSDs of one host? So the total down-time for one host regarding fsck
should not be much more than say 15min, isn't it?
You can also turn it off and do that separately at a more convenient time:
ceph config set osd bluestore_fsck_quick_fix_on_mount false
After the upgrade is done, you can do the OSD bluestore fsck
systemctl stop ceph-osd.target
wait till processes are finished
for osd in `ls /var/lib/ceph/osd/`; do ceph-bluestore-tool repair --path
/var/lib/ceph/osd/$osd;done
...
bunch of output like Dan posted earlier
...
systemctl start ceph-osd.target
That works at least for OSDs without a separate WAL+DB.
Gr. Stefan
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