[lustre-discuss] new mounted client shows lower disk space

fırat yılmaz firatyilmazz at gmail.com
Mon Nov 12 00:46:22 PST 2018

Hi All
OS=Redhat 7.4
Lustre Version: Intel® Manager for Lustre* software

I have 72 osts over 6 oss with HA and 1 mdt serving to 195 clients over
infiniband EDR.

After a reboot on client, lustre filesystem mounts on startup. It should be
2.1 TB area but lt starts with 350TB.

lfs osts command shows 90 percent of even numbered osts are ACTIVE and no
information about other OSTs, as time passes like 1 hour or so, all OSTs
become active and lustre area can be seen as 2.1 PB

dmesg on lustre oss server:
LustreError: 137-5: lustre-OST0009_UUID: not available for connect from at o2ib (no target). If you are running an HA pair check that the
target is mounted on the other server.

dmesg on client:
LNet: 5419:0:(o2iblnd_cb.c:3192:kiblnd_check_conns()) Timed out tx for at o2ib: 15 seconds
Lustre: 5546:0:(client.c:2114:ptlrpc_expire_one_request()) @@@ Request sent
has failed due to network error: [sent 1542009416/real 1542009426]
req at ffff885f47610000 x1616909446641136/t0(0)
o8->lustre-OST0030-osc-ffff885f75219800 at lens 520/544 e 0
to 1 dl 1542009696 ref 1 fl Rpc:eXN/0/ffffffff rc 0/-1

I tested infiniband with ib_send_lat, ib_read_lat and no error occured
I tested lnet ping with lctl ping at o2ib , no error occured
12345-0 at lo
12345- at o2ib

Why some OST's  can be accesible while some are not in the same server?
Best Regards.
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