Take a look at the available SMR drives:
https://www.ixsystems.com/community/resources/list-of-known-smr-drives.141/
I wouldn’t put a single one of those drives into a Ceph system. You won’t save
any money. In fact, it’s likely a sink-hole for labor on your part. In fact,
you couldn’t pay me
Ditto, I had a bad optic on 48x10 switch. The only way I detected it was my
prometheus tcp fail retrans count. Looking back over the previous 4 weeks, I
could seen it increment in small bursts, but Ceph was able to handle it and
then it went crazy and a bunch of OSD’s just dropped out.
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Are you mounting the RO with noatime?
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