Hello,
I am trying to test SSK in  lustre 2.12.2
1.when setup  flavor=skn,  mount  filesystem oklctl conf_param 
testfs2.srpc.flavor.o2ib.cli2mdt=skn

2.when setup  flavor=skn,  mount  filesystem failed and report  verify_hmac()) 
Token received too short error.lctl conf_param 
testfs2.srpc.flavor.o2ib.cli2mdt=ska

Is there any suggestion to correct it? Thanks.
02000000:08000000:7.0F:1565232419.439330:0:32607:0:(gss_sk_mech.c:366:sk_verify_hmac())
 Token received too short, expected 40 received 
6402000000:00020000:7.0:1565232419.439338:0:32607:0:(sec_gss.c:242:gss_verify_msg())
 mic verify error: 
0009000002000000:00020000:7.0:1565232419.439342:0:32607:0:(sec_gss.c:2125:gss_svc_verify_request())
 failed to verify request: 
9000002000000:08000000:11.0F:1565232421.762611:0:4536:0:(sec.c:1341:sptlrpc_sec_create())
 mgs MGS: reverse sec using flavor 
null00000100:02000000:11.0:1565232421.762620:0:4536:0:(import.c:1555:ptlrpc_import_recovery_state_machine())
 MGS: Connection restored to af635414-8eef-eea9-4d9f-5c4771b69970 (at 
172.20.0.221@o2ib)02000000:08000000:7.0:1565232422.496054:0:32607:0:(sec_gss.c:1991:gss_svc_handle_init())
 processing gss init(1) request from 
172.20.0.221@o2ib02000000:08000000:15.0F:1565232422.567642:0:24943:0:(gss_sk_mech.c:256:gss_import_sec_context_sk())
 successfully imported sk 
context02000000:08000000:7.0:1565232422.567780:0:32607:0:(gss_svc_upcall.c:1031:gss_svc_upcall_handle_init())
 cache_check is 
good02000000:08000000:7.0:1565232422.567794:0:32607:0:(gss_svc_upcall.c:1066:gss_svc_upcall_handle_init())
 server create rsc 
ffff9501841ece00(0->172.20.0.221@o2ib)02000000:08000000:7.0:1565232422.567801:0:32607:0:(gss_svc_upcall.c:1120:gss_svc_upcall_handle_init())
 create rsc with idx 
0x11385fb66f98787502000000:00000400:7.0:1565232422.567806:0:32607:0:(sec_gss.c:2066:gss_svc_handle_init())
 create svc ctx ffff9501841ece40: user from 172.20.0.221@o2ib authenticated as 
root02000000:08000000:7.0:1565232422.603215:0:32607:0:(gss_sk_mech.c:366:sk_verify_hmac())
 Token received too short, expected 40 received 
6402000000:00020000:7.0:1565232422.603220:0:32607:0:(sec_gss.c:242:gss_verify_msg())
 mic verify error: 
0009000002000000:00020000:7.0:1565232422.603223:0:32607:0:(sec_gss.c:2125:gss_svc_verify_request())
 failed to verify request: 
9000002000000:00020000:7.0:1565232422.603227:0:32607:0:(sec_gss.c:2288:gss_svc_handle_data())
 svc 1 failed: major 0x00090000: req xid 1641259602038800 ctx ffff9501841ece40 
idx 0x11385fb66f987875(0->172.20.0.221@o2ib)Debug log: 15 lines, 15 kept, 0 
dropped, 0 bad.


regards,jacky
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