I googled "got 0x6706be76, expected" and found some hits regarding ceph, so
whatever it is, you are not the first, and that number has some internal
meaning.
Redhat solution for similar issue says that checksum is for seeing all
zeroes, and hints at a bad write cache on the controller or something that
ends up clearing data instead of writing the correct information on
shutdowns.
Den tis 8 sep. 2020 kl 23:21 skrev David Orman <ormandj(a)corenode.com>om>:
We're seeing repeated inconsistent PG warnings, generally on the order of
3-10 per week.
pg 2.b9 is active+clean+inconsistent, acting [25,117,128,95,151,15]
Every time we look at them, we see the same checksum
(0x6706be76):
debug 2020-08-13T18:39:01.731+0000 7fbc037a7700 -1
bluestore(/var/lib/ceph/osd/ceph-25) _verify_csum bad crc32c/0x1000
checksum at blob offset 0x0, got 0x6706be76, expected 0x61f2021c, device
location [0x12b403c0000~1000], logical extent 0x0~1000, object
2#2:0f1a338f:::rbd_data.3.20d195d612942.0000000001db869b:head#
This looks a lot like:
https://tracker.ceph.com/issues/22464
That said, we've got the following versions in play (cluster was created
with 15.2.3):
ceph version 15.2.4 (7447c15c6ff58d7fce91843b705a268a1917325c) octopus
(stable)
--
May the most significant bit of your life be positive.