When is the rctime updated in CephFS?

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Hi,

I've been playing around a bit with the recursive statistics for CephFS
today and I'm seeing some behavior with the rstats what I don't understand.

I /A/B/C in my CephFS.

I changed a file in 'C' and the ceph.dir.rctime xattr changed
immediately. I've been waiting for 60 minutes now, but /A and /A/B still
have their old rctime.

A: 1418905422 (18-12-2014 13:23:42)
B: 1418905422 (18-12-2014 13:23:42)
C: 1418909134 (18-12-2014 14:25:34)

It's 15:21:34 right now, so after 1 hour the rctime of A and B still
hasn't updated.

How long does this take? I know the MDS is lazy in updating the rstats,
but one hour is quite long, isn't it?

Ceph version 0.89
Linux 3.18 kernel client
Ceph fuse client 0.89

-- 
Wido den Hollander
42on B.V.
Ceph trainer and consultant

Phone: +31 (0)20 700 9902
Skype: contact42on
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