Hello,
Yesterday I upgraded one of my filesystems from Lustre 2.10.5 to Lustre
2.12.0
everything apparently went well. I Also upgraded form zfs 0.7.9 to zfs
0.7.12
I also ahve another cluster with a clean 2.12.0 install and it works
well and performs well
Today after the yesterday's upgrade I noticed that the clients could not
mount the filesystem anymore and the clients had this error
Mar 1 14:41:15 psexport07 kernel: LustreError:
1355:0:(lmv_obd.c:1412:lmv_statfs()) can't stat MDS #0
(ana15-MDT0000-mdc-ffff9cf3b03e0000), error -11
Mar 1 14:41:16 psexport07 kernel: LustreError:
1355:0:(lov_obd.c:831:lov_cleanup()) ana15-clilov-ffff9cf3b03e0000: lov
tgt 1 not cleaned! deathrow=0, lovrc=1
mount operation would just hang with no error on the MDS or on the OSS
After rebooting the MDS/MDT server everything is apparently fixed.
I wonder what could be the cause of this. I have checked the networking
and LNet configuration and everything is properly configured.
lctl ping works and anyway nothing has been changed in the configuration
from 2.10.5 to 2.12.0
Any hints are very appreciated.
thanks
Rick
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