Hi, i had a problem with one application (seafile) which uses CEPH backend with librados. The corresponding pools are defined with size=3 and each object copy is on a different host. The cluster health is OK: all the monitors see all the hosts.
Now, a network problem just happens between my RADOS client and a single host. Then, when my application/client tries to access an object which is situed on the unreachable host (primary for the corresponding PG), it does not failover to another copy/host (and my application crashes later because after a while, with many requests, too many files are opened on Linux). Is it the normal behavior? My storage is resilient (great!) but not its access... If on the host, i stop the OSDs or change the affinity to zero, it solves, so it seems like the librados just check and trust the osdmap And doing a tcpdump show the client tries to access the same OSD without timeout. It can be easily reproduced with defining a netfilter rule on a host to drop packets coming from the client. Note: i am still on Luminous (both on lient and cluster sides). Thanks for reading. D. _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
