[  348.159674] Lustre: 13490:0:(gss_mech_switch.c:72:lgss_mech_register()) Register gssnull mechanism
[  348.159684] Key type lgssc registered
[  348.174576] Lustre: 13501:0:(sec_gss.c:378:gss_cli_ctx_uptodate()) client refreshed ctx ffff96c4ffb15b00 idx 0x5065a837013ad3f9 (0->testfs-MDT0000_UUID), expiry 1557979128(+50s)
[  348.174593] Lustre: 13501:0:(gss_svc_upcall.c:872:gss_svc_upcall_install_rvs_ctx()) create reverse svc ctx ffff96c4b6433a40 to testfs-MDT0000_UUID: idx 0xd1afc5cc51f714e6
[  348.190687] Lustre: Mounted testfs-client
[  423.173104] Lustre: 13269:0:(sec_gss.c:316:cli_ctx_expire()) ctx ffff96c4ffb15b00(0->testfs-MDT0000_UUID) get expired: 1557979128(-25s)
[  423.180959] Lustre: 13269:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) gss.keyring@ffff96c4a626bf00: destroy ctx ffff96c4ffb15b00(0->testfs-MDT0000_UUID)
[  423.186296] LustreError: 13537:0:(gss_keyring.c:1426:gss_kt_update()) negotiation: rpc err 0, gss err 0
[  473.182304] LustreError: 13551:0:(gss_keyring.c:1426:gss_kt_update()) negotiation: rpc err 0, gss err 0
[  473.182365] Lustre: 13551:0:(sec_gss.c:316:cli_ctx_expire()) ctx ffff96c4587e0300(0->testfs-MDT0000_UUID) get expired: 1557979403(+200s)
[  473.182368] Lustre: 13551:0:(sec_gss.c:316:cli_ctx_expire()) Skipped 1 previous similar message
[  473.182418] Lustre: 13270:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) gss.keyring@ffff96c4a626bf00: destroy ctx ffff96c4587e0300(0->testfs-MDT0000_UUID)
[  473.182423] Lustre: 13270:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) Skipped 1 previous similar message
[  479.034723] LustreError: 13555:0:(gss_keyring.c:1426:gss_kt_update()) negotiation: rpc err 0, gss err 0
[  479.034789] Lustre: 13555:0:(sec_gss.c:316:cli_ctx_expire()) ctx ffff96c4bedaa300(0->testfs-MDT0000_UUID) get expired: 1557979408(+200s)
[  479.034827] Lustre: 13552:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) gss.keyring@ffff96c4a626bf00: destroy ctx ffff96c4bedaa300(0->testfs-MDT0000_UUID)
[  479.046493] LustreError: 13552:0:(file.c:3644:ll_inode_revalidate_fini()) testfs: revalidate FID [0x200000402:0x2:0x0] error: rc = -1
[  479.052572] LustreError: 13552:0:(lmv_obd.c:1387:lmv_statfs()) can't stat MDS #0 (testfs-MDT0000-mdc-ffff96b5e8f2a800), error -1
[  479.052631] LustreError: 13552:0:(llite_lib.c:1759:ll_statfs_internal()) md_statfs fails: rc = -1
[  491.160547] LustreError: 13568:0:(gss_keyring.c:1426:gss_kt_update()) negotiation: rpc err 0, gss err 0
[  491.160597] LustreError: 13568:0:(gss_keyring.c:1426:gss_kt_update()) Skipped 3 previous similar messages
[  491.160643] Lustre: 13568:0:(sec_gss.c:316:cli_ctx_expire()) ctx ffff96c4b8fea000(0->testfs-MDT0000_UUID) get expired: 1557979420(+200s)
[  491.160645] Lustre: 13568:0:(sec_gss.c:316:cli_ctx_expire()) Skipped 3 previous similar messages
[  491.160663] Lustre: 13395:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) gss.keyring@ffff96c4a626bf00: destroy ctx ffff96c4b8fea000(0->testfs-MDT0000_UUID)
[  491.160668] Lustre: 13395:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) Skipped 3 previous similar messages
[  491.171341] LustreError: 13395:0:(file.c:3644:ll_inode_revalidate_fini()) testfs: revalidate FID [0x200000402:0x2:0x0] error: rc = -1
[  491.541937] LustreError: 13588:0:(gss_cli_upcall.c:300:gss_do_ctx_init_rpc()) import has been deactivated
[  491.544761] LustreError: 13576:0:(lmv_obd.c:605:lmv_disconnect_mdc()) Target testfs-MDT0000_UUID disconnect error -1
[  491.545319] Lustre: Unmounted testfs-client
[  519.811305] LustreError: 13638:0:(gss_keyring.c:1426:gss_kt_update()) negotiation: rpc err 0, gss err 0
[  519.811353] LustreError: 13638:0:(gss_keyring.c:1426:gss_kt_update()) Skipped 6 previous similar messages
[  519.811397] Lustre: 13638:0:(sec_gss.c:316:cli_ctx_expire()) ctx ffff96c457a6b680(0->testfs-MDT0000_UUID) get expired: 1557979449(+200s)
[  519.811400] Lustre: 13638:0:(sec_gss.c:316:cli_ctx_expire()) Skipped 6 previous similar messages
[  536.452450] IPMI message handler: Event queue full, discarding incoming events
[  544.810531] LustreError: 13662:0:(gss_keyring.c:1426:gss_kt_update()) negotiation: rpc err 0, gss err 0
[  544.810598] Lustre: 13662:0:(sec_gss.c:316:cli_ctx_expire()) ctx ffff96c46d3e5e00(0->testfs-MDT0000_UUID) get expired: 1557979474(+200s)
[  544.810658] Lustre: 13264:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) gss.keyring@ffff96c4b6d05b00: destroy ctx ffff96c46d3e5e00(0->testfs-MDT0000_UUID)
[  544.810663] Lustre: 13264:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) Skipped 6 previous similar messages
[  594.813416] LustreError: 13668:0:(gss_keyring.c:1426:gss_kt_update()) negotiation: rpc err 0, gss err 0
[  594.813470] Lustre: 13668:0:(sec_gss.c:316:cli_ctx_expire()) ctx ffff96c46d3e40c0(0->testfs-MDT0000_UUID) get expired: 1557979524(+200s)
[  594.813504] Lustre: 13264:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) gss.keyring@ffff96c4b6d05b00: destroy ctx ffff96c46d3e40c0(0->testfs-MDT0000_UUID)
[  644.808160] LustreError: 13672:0:(gss_keyring.c:1426:gss_kt_update()) negotiation: rpc err 0, gss err 0
[  644.808243] Lustre: 13672:0:(sec_gss.c:316:cli_ctx_expire()) ctx ffff96c46d3e4480(0->testfs-MDT0000_UUID) get expired: 1557979574(+200s)
[  644.808284] Lustre: 13264:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) gss.keyring@ffff96c4b6d05b00: destroy ctx ffff96c46d3e4480(0->testfs-MDT0000_UUID)
[  694.806838] Lustre: 13264:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) gss.keyring@ffff96c4b6d05b00: destroy ctx ffff96c46d3e4000(0->testfs-MDT0000_UUID)
[  744.809404] LustreError: 13679:0:(gss_keyring.c:1426:gss_kt_update()) negotiation: rpc err 0, gss err 0
[  744.809448] LustreError: 13679:0:(gss_keyring.c:1426:gss_kt_update()) Skipped 1 previous similar message
[  744.809492] Lustre: 13679:0:(sec_gss.c:316:cli_ctx_expire()) ctx ffff96c46d3e5140(0->testfs-MDT0000_UUID) get expired: 1557979674(+200s)
[  744.809495] Lustre: 13679:0:(sec_gss.c:316:cli_ctx_expire()) Skipped 1 previous similar message
[  752.474963] LustreError: 13597:0:(lmv_obd.c:1387:lmv_statfs()) can't stat MDS #0 (testfs-MDT0000-mdc-ffff96c4bd579800), error -4
[  752.481180] LustreError: 13597:0:(lov_obd.c:878:lov_cleanup()) testfs-clilov-ffff96c4bd579800: lov tgt 0 not cleaned! deathrow=0, lovrc=1
[  752.482905] Lustre: Unmounted testfs-client
[  752.484405] LustreError: 13597:0:(obd_mount.c:1582:lustre_fill_super()) Unable to mount  (-4)
[root@mds-s1 ~]# tail -n 100 /var/log/messages
May 15 23:57:57 mds-s1 kernel: RPC: Registered udp transport module.
May 15 23:57:57 mds-s1 kernel: RPC: Registered tcp transport module.
May 15 23:57:57 mds-s1 kernel: RPC: Registered tcp NFSv4.1 backchannel transport module.
May 15 23:57:57 mds-s1 lsvcgssd[10889]: successfully open /proc/net/rpc/auth.sptlrpc.init/channel
May 15 23:57:57 mds-s1 kernel: Lustre: 13490:0:(gss_mech_switch.c:72:lgss_mech_register()) Register gssnull mechanism
May 15 23:57:57 mds-s1 kernel: Key type lgssc registered
May 15 23:57:58 mds-s1 kernel: Lustre: 13501:0:(sec_gss.c:378:gss_cli_ctx_uptodate()) client refreshed ctx ffff96c4ffb15b00 idx 0x5065a837013ad3f9 (0->testfs-MDT0000_UUID), expiry 1557979128(+50s)
May 15 23:57:58 mds-s1 kernel: Lustre: 13501:0:(gss_svc_upcall.c:872:gss_svc_upcall_install_rvs_ctx()) create reverse svc ctx ffff96c4b6433a40 to testfs-MDT0000_UUID: idx 0xd1afc5cc51f714e6
May 15 23:57:58 mds-s1 kernel: Lustre: Mounted testfs-client
May 15 23:58:43 mds-s1 systemd-logind: New session 3 of user root.
May 15 23:58:43 mds-s1 systemd: Started Session 3 of user root.
May 15 23:59:13 mds-s1 kernel: Lustre: 13269:0:(sec_gss.c:316:cli_ctx_expire()) ctx ffff96c4ffb15b00(0->testfs-MDT0000_UUID) get expired: 1557979128(-25s)
May 15 23:59:13 mds-s1 kernel: Lustre: 13269:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) gss.keyring@ffff96c4a626bf00: destroy ctx ffff96c4ffb15b00(0->testfs-MDT0000_UUID)
May 15 23:59:13 mds-s1 lgss_keyring: [13537]:ERROR:lgssc_negotiation_manual(): zero length context or token received
May 15 23:59:13 mds-s1 kernel: LustreError: 13537:0:(gss_keyring.c:1426:gss_kt_update()) negotiation: rpc err 0, gss err 0
May 15 23:59:13 mds-s1 lgss_keyring: [13537]:ERROR:lgssc_kr_negotiate_manual(): key 386be05c: failed to negotiate
May 16 00:00:01 mds-s1 systemd: Started Session 4 of user root.
May 16 00:00:03 mds-s1 lgss_keyring: [13551]:ERROR:lgssc_negotiation_manual(): zero length context or token received
May 16 00:00:03 mds-s1 kernel: LustreError: 13551:0:(gss_keyring.c:1426:gss_kt_update()) negotiation: rpc err 0, gss err 0
May 16 00:00:03 mds-s1 kernel: Lustre: 13551:0:(sec_gss.c:316:cli_ctx_expire()) ctx ffff96c4587e0300(0->testfs-MDT0000_UUID) get expired: 1557979403(+200s)
May 16 00:00:03 mds-s1 kernel: Lustre: 13551:0:(sec_gss.c:316:cli_ctx_expire()) Skipped 1 previous similar message
May 16 00:00:03 mds-s1 kernel: Lustre: 13270:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) gss.keyring@ffff96c4a626bf00: destroy ctx ffff96c4587e0300(0->testfs-MDT0000_UUID)
May 16 00:00:03 mds-s1 kernel: Lustre: 13270:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) Skipped 1 previous similar message
May 16 00:00:03 mds-s1 lgss_keyring: [13551]:ERROR:lgssc_kr_negotiate_manual(): key 2c64175e: failed to negotiate
May 16 00:00:08 mds-s1 lgss_keyring: [13555]:ERROR:lgssc_negotiation_manual(): zero length context or token received
May 16 00:00:08 mds-s1 lgss_keyring: [13555]:ERROR:lgssc_kr_negotiate_manual(): key 24186738: failed to negotiate
May 16 00:00:08 mds-s1 kernel: LustreError: 13555:0:(gss_keyring.c:1426:gss_kt_update()) negotiation: rpc err 0, gss err 0
May 16 00:00:08 mds-s1 kernel: Lustre: 13555:0:(sec_gss.c:316:cli_ctx_expire()) ctx ffff96c4bedaa300(0->testfs-MDT0000_UUID) get expired: 1557979408(+200s)
May 16 00:00:08 mds-s1 kernel: Lustre: 13552:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) gss.keyring@ffff96c4a626bf00: destroy ctx ffff96c4bedaa300(0->testfs-MDT0000_UUID)
May 16 00:00:08 mds-s1 lgss_keyring: [13558]:ERROR:lgssc_negotiation_manual(): zero length context or token received
May 16 00:00:08 mds-s1 lgss_keyring: [13558]:ERROR:lgssc_kr_negotiate_manual(): key 2cb3ae12: failed to negotiate
May 16 00:00:08 mds-s1 lgss_keyring: [13561]:ERROR:lgssc_negotiation_manual(): zero length context or token received
May 16 00:00:08 mds-s1 kernel: LustreError: 13552:0:(file.c:3644:ll_inode_revalidate_fini()) testfs: revalidate FID [0x200000402:0x2:0x0] error: rc = -1
May 16 00:00:08 mds-s1 lgss_keyring: [13561]:ERROR:lgssc_kr_negotiate_manual(): key 3f401ab1: failed to negotiate
May 16 00:00:08 mds-s1 lgss_keyring: [13564]:ERROR:lgssc_negotiation_manual(): zero length context or token received
May 16 00:00:08 mds-s1 kernel: LustreError: 13552:0:(lmv_obd.c:1387:lmv_statfs()) can't stat MDS #0 (testfs-MDT0000-mdc-ffff96b5e8f2a800), error -1
May 16 00:00:08 mds-s1 kernel: LustreError: 13552:0:(llite_lib.c:1759:ll_statfs_internal()) md_statfs fails: rc = -1
May 16 00:00:08 mds-s1 lgss_keyring: [13564]:ERROR:lgssc_kr_negotiate_manual(): key 0414fca8: failed to negotiate
May 16 00:00:20 mds-s1 lgss_keyring: [13568]:ERROR:lgssc_negotiation_manual(): zero length context or token received
May 16 00:00:20 mds-s1 lgss_keyring: [13568]:ERROR:lgssc_kr_negotiate_manual(): key 1a4460a6: failed to negotiate
May 16 00:00:20 mds-s1 kernel: LustreError: 13568:0:(gss_keyring.c:1426:gss_kt_update()) negotiation: rpc err 0, gss err 0
May 16 00:00:20 mds-s1 kernel: LustreError: 13568:0:(gss_keyring.c:1426:gss_kt_update()) Skipped 3 previous similar messages
May 16 00:00:20 mds-s1 kernel: Lustre: 13568:0:(sec_gss.c:316:cli_ctx_expire()) ctx ffff96c4b8fea000(0->testfs-MDT0000_UUID) get expired: 1557979420(+200s)
May 16 00:00:20 mds-s1 kernel: Lustre: 13568:0:(sec_gss.c:316:cli_ctx_expire()) Skipped 3 previous similar messages
May 16 00:00:20 mds-s1 kernel: Lustre: 13395:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) gss.keyring@ffff96c4a626bf00: destroy ctx ffff96c4b8fea000(0->testfs-MDT0000_UUID)
May 16 00:00:20 mds-s1 kernel: Lustre: 13395:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) Skipped 3 previous similar messages
May 16 00:00:21 mds-s1 lgss_keyring: [13571]:ERROR:lgssc_negotiation_manual(): zero length context or token received
May 16 00:00:21 mds-s1 lgss_keyring: [13571]:ERROR:lgssc_kr_negotiate_manual(): key 24dc76a9: failed to negotiate
May 16 00:00:21 mds-s1 lgss_keyring: [13574]:ERROR:lgssc_negotiation_manual(): zero length context or token received
May 16 00:00:21 mds-s1 kernel: LustreError: 13395:0:(file.c:3644:ll_inode_revalidate_fini()) testfs: revalidate FID [0x200000402:0x2:0x0] error: rc = -1
May 16 00:00:21 mds-s1 lgss_keyring: [13574]:ERROR:lgssc_kr_negotiate_manual(): key 33bcf5a6: failed to negotiate
May 16 00:00:21 mds-s1 lgss_keyring: [13579]:ERROR:lgssc_negotiation_manual(): zero length context or token received
May 16 00:00:21 mds-s1 lgss_keyring: [13579]:ERROR:lgssc_kr_negotiate_manual(): key 39f2a62a: failed to negotiate
May 16 00:00:21 mds-s1 lgss_keyring: [13582]:ERROR:lgssc_negotiation_manual(): zero length context or token received
May 16 00:00:21 mds-s1 lgss_keyring: [13582]:ERROR:lgssc_kr_negotiate_manual(): key 2bfc795d: failed to negotiate
May 16 00:00:21 mds-s1 lgss_keyring: [13585]:ERROR:lgssc_negotiation_manual(): zero length context or token received
May 16 00:00:21 mds-s1 lgss_keyring: [13585]:ERROR:lgssc_kr_negotiate_manual(): key 091fdbb3: failed to negotiate
May 16 00:00:21 mds-s1 lgss_keyring: [13588]:ERROR:do_nego_rpc(): lustre ioctl err: Invalid argument
May 16 00:00:21 mds-s1 kernel: LustreError: 13588:0:(gss_cli_upcall.c:300:gss_do_ctx_init_rpc()) import has been deactivated
May 16 00:00:21 mds-s1 lgss_keyring: [13588]:ERROR:lgssc_negotiation_manual(): negotiation rpc error -13
May 16 00:00:21 mds-s1 lgss_keyring: [13588]:ERROR:lgssc_kr_negotiate_manual(): key 33ebc6d6: failed to negotiate
May 16 00:00:21 mds-s1 kernel: LustreError: 13576:0:(lmv_obd.c:605:lmv_disconnect_mdc()) Target testfs-MDT0000_UUID disconnect error -1
May 16 00:00:21 mds-s1 kernel: Lustre: Unmounted testfs-client
May 16 00:00:49 mds-s1 lgss_keyring: [13638]:ERROR:lgssc_negotiation_manual(): zero length context or token received
May 16 00:00:49 mds-s1 lgss_keyring: [13638]:ERROR:lgssc_kr_negotiate_manual(): key 246965d4: failed to negotiate
May 16 00:00:49 mds-s1 kernel: LustreError: 13638:0:(gss_keyring.c:1426:gss_kt_update()) negotiation: rpc err 0, gss err 0
May 16 00:00:49 mds-s1 kernel: LustreError: 13638:0:(gss_keyring.c:1426:gss_kt_update()) Skipped 6 previous similar messages
May 16 00:00:49 mds-s1 kernel: Lustre: 13638:0:(sec_gss.c:316:cli_ctx_expire()) ctx ffff96c457a6b680(0->testfs-MDT0000_UUID) get expired: 1557979449(+200s)
May 16 00:00:49 mds-s1 kernel: Lustre: 13638:0:(sec_gss.c:316:cli_ctx_expire()) Skipped 6 previous similar messages
May 16 00:01:01 mds-s1 systemd: Started Session 5 of user root.
May 16 00:01:06 mds-s1 kernel: IPMI message handler: Event queue full, discarding incoming events
May 16 00:01:14 mds-s1 lgss_keyring: [13662]:ERROR:lgssc_negotiation_manual(): zero length context or token received
May 16 00:01:14 mds-s1 lgss_keyring: [13662]:ERROR:lgssc_kr_negotiate_manual(): key 27ca7996: failed to negotiate
May 16 00:01:14 mds-s1 kernel: LustreError: 13662:0:(gss_keyring.c:1426:gss_kt_update()) negotiation: rpc err 0, gss err 0
May 16 00:01:14 mds-s1 kernel: Lustre: 13662:0:(sec_gss.c:316:cli_ctx_expire()) ctx ffff96c46d3e5e00(0->testfs-MDT0000_UUID) get expired: 1557979474(+200s)
May 16 00:01:14 mds-s1 kernel: Lustre: 13264:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) gss.keyring@ffff96c4b6d05b00: destroy ctx ffff96c46d3e5e00(0->testfs-MDT0000_UUID)
May 16 00:01:14 mds-s1 kernel: Lustre: 13264:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) Skipped 6 previous similar messages
May 16 00:02:04 mds-s1 lgss_keyring: [13668]:ERROR:lgssc_negotiation_manual(): zero length context or token received
May 16 00:02:04 mds-s1 lgss_keyring: [13668]:ERROR:lgssc_kr_negotiate_manual(): key 06f474c1: failed to negotiate
May 16 00:02:04 mds-s1 kernel: LustreError: 13668:0:(gss_keyring.c:1426:gss_kt_update()) negotiation: rpc err 0, gss err 0
May 16 00:02:04 mds-s1 kernel: Lustre: 13668:0:(sec_gss.c:316:cli_ctx_expire()) ctx ffff96c46d3e40c0(0->testfs-MDT0000_UUID) get expired: 1557979524(+200s)
May 16 00:02:04 mds-s1 kernel: Lustre: 13264:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) gss.keyring@ffff96c4b6d05b00: destroy ctx ffff96c46d3e40c0(0->testfs-MDT0000_UUID)
May 16 00:02:54 mds-s1 lgss_keyring: [13672]:ERROR:lgssc_negotiation_manual(): zero length context or token received
May 16 00:02:54 mds-s1 lgss_keyring: [13672]:ERROR:lgssc_kr_negotiate_manual(): key 0ca11216: failed to negotiate
May 16 00:02:54 mds-s1 kernel: LustreError: 13672:0:(gss_keyring.c:1426:gss_kt_update()) negotiation: rpc err 0, gss err 0
May 16 00:02:54 mds-s1 kernel: Lustre: 13672:0:(sec_gss.c:316:cli_ctx_expire()) ctx ffff96c46d3e4480(0->testfs-MDT0000_UUID) get expired: 1557979574(+200s)
May 16 00:02:54 mds-s1 kernel: Lustre: 13264:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) gss.keyring@ffff96c4b6d05b00: destroy ctx ffff96c46d3e4480(0->testfs-MDT0000_UUID)
May 16 00:03:44 mds-s1 lgss_keyring: [13675]:ERROR:lgssc_negotiation_manual(): zero length context or token received
May 16 00:03:44 mds-s1 kernel: Lustre: 13264:0:(sec_gss.c:1226:gss_cli_ctx_fini_common()) gss.keyring@ffff96c4b6d05b00: destroy ctx ffff96c46d3e4000(0->testfs-MDT0000_UUID)
May 16 00:03:44 mds-s1 lgss_keyring: [13675]:ERROR:lgssc_kr_negotiate_manual(): key 36e2033f: failed to negotiate
May 16 00:04:34 mds-s1 lgss_keyring: [13679]:ERROR:lgssc_negotiation_manual(): zero length context or token received
May 16 00:04:34 mds-s1 lgss_keyring: [13679]:ERROR:lgssc_kr_negotiate_manual(): key 1d04212b: failed to negotiate
May 16 00:04:34 mds-s1 kernel: LustreError: 13679:0:(gss_keyring.c:1426:gss_kt_update()) negotiation: rpc err 0, gss err 0
May 16 00:04:34 mds-s1 kernel: LustreError: 13679:0:(gss_keyring.c:1426:gss_kt_update()) Skipped 1 previous similar message
May 16 00:04:34 mds-s1 kernel: Lustre: 13679:0:(sec_gss.c:316:cli_ctx_expire()) ctx ffff96c46d3e5140(0->testfs-MDT0000_UUID) get expired: 1557979674(+200s)
May 16 00:04:34 mds-s1 kernel: Lustre: 13679:0:(sec_gss.c:316:cli_ctx_expire()) Skipped 1 previous similar message
May 16 00:04:42 mds-s1 kernel: LustreError: 13597:0:(lmv_obd.c:1387:lmv_statfs()) can't stat MDS #0 (testfs-MDT0000-mdc-ffff96c4bd579800), error -4
May 16 00:04:42 mds-s1 kernel: LustreError: 13597:0:(lov_obd.c:878:lov_cleanup()) testfs-clilov-ffff96c4bd579800: lov tgt 0 not cleaned! deathrow=0, lovrc=1
May 16 00:04:42 mds-s1 kernel: Lustre: Unmounted testfs-client
May 16 00:04:42 mds-s1 kernel: LustreError: 13597:0:(obd_mount.c:1582:lustre_fill_super()) Unable to mount  (-4)