ceph-mds jewel backports leak

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Hi John,

While testing the CephFS jewel backports found in the jewel-backports branch, we ran into a memory leak that consistently happen:

http://pulpito.ceph.com/loic-2016-06-16_02:28:14-fs-jewel-backports---basic-smithi/263842

and that is not present in the jewel branch

http://pulpito.ceph.com/loic-2016-06-28_23:43:39-fs-jewel---basic-smithi/282493/

Meaning one of the backports is doing something wrong. Or there is a backport fixing the leak that is missing.

This one looks interesting to me

https://github.com/ceph/ceph/commit/37b7b09ee19ad64362c2faf63461353c03a36ada

There also are related to leaks but I'm not so sure.

https://github.com/ceph/ceph/commit/89f74c98ea43df46291c8bec890b3a75c7ce38b4
https://github.com/ceph/ceph/commit/4c52bf9ed47d52510536ebc34bd6c56adba1df53

If you have ideas on how to approach this and save random exploration time, it would be most welcome. If not, I'll get it eventually, no worries :-)

Cheers

-- 
Loïc Dachary, Artisan Logiciel Libre
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