On 08/18/2014 01:57 PM, Loic Dachary wrote:
Hi Ceph,
In RHEL 6.5, is the following scenario possible :
a) an OSD dlopen a shared library for erasure-code,
b) the shared library file is replaced while the OSD is running,
c) the OSD starts using the new file instead of the old one.
It seems unlikely but it would explain a weird stack trace at
http://tracker.ceph.com/issues/9153#note-5 so I'm double checking ;-)
Well, it could be that it does so. I'm not 100% sure, but afaik it could
happen that when you replace a library certain parts might not be in memory.
See:
http://stackoverflow.com/questions/7767325/replacing-shared-object-so-file-while-main-program-is-running
Cheers
--
Wido den Hollander
Ceph consultant and trainer
42on B.V.
Phone: +31 (0)20 700 9902
Skype: contact42on
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