Hey folks,
I keep getting ceph health warnings about clients failing to respond to cache
pressure. They always refer to sessions from ganesha exports. I've read all
threads regarding this issue, but none of my changes resolved it. What I’ve
done so far:
Ganesha.conf:
MDCACHE {
Dir_Chunk = 0;
NParts = 1;
Cache_Size = 1;
}
Attr_Expiration_Time = 0 in every export
mds_cache_memory_limit = 17179869184 on MDS Servers
I even set “client_oc = false” on the ganesha server, but this doesn’t seem to
be applied
My setup is ceph version 14.2.8 (All Server and clients. One active MDS.
Ganesha 2.8.3 runs on a dedicated Server.
ceph daemon mds.<active_mds> dump_mempools (filtered out the empty pools):
"mempool": {
"by_pool": {
"bloom_filter": {
"items": 1414723,
"bytes": 1414723
},
"buffer_anon": {
"items": 180992,
"bytes": 2404306271
},
"buffer_meta": {
"items": 178660,
"bytes": 15722080
},
"osdmap": {
"items": 4121,
"bytes": 75912
},
"mds_co": {
"items": 221728924,
"bytes": 16320868177
},
},
"total": {
"items": 223507420,
"bytes": 18742387163
Every hint how to resolve the issue are welcome. If more information is needed,
I am glad to provide it.
Regards Felix
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Forschungszentrum Juelich GmbH
52425 Juelich
Sitz der Gesellschaft: Juelich
Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498
Vorsitzender des Aufsichtsrats: MinDir Dr. Karl Eugen Huthmacher
Geschaeftsfuehrung: Prof. Dr.-Ing. Wolfgang Marquardt (Vorsitzender),
Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt
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