[LU-3552] 2.4.0<->2.3 interop: sanity test_180a: error: create: #1 - Name not unique on network

• Type: Bug
• Resolution: Cannot Reproduce
• Priority: Minor
• Affects Version/s: Lustre 2.4.0
• Labels: yuc2

Environment

Lustre server build: https://build.whamcloud.com/job/lustre-chris/25/
Lustre client build: http://build.whamcloud.com/job/lustre-b2_4/13/

• Severity: 3
• Assignee: Bob Glossman (Inactive)
• Reporter: Jian Yu

Description

sanity test 180a failed as follows:

== sanity test 180a: test obdecho on osc == 20:19:52 (1372821592)
Creating new osc for lustre-OST0000 on 10.10.18.136@tcp
CMD: wtm-50 /usr/sbin/lctl attach echo_client ec ec_uuid
CMD: wtm-50 /usr/sbin/lctl --device ec setup lustre-OST0000_osc
CMD: wtm-50 /usr/sbin/lctl --device ec create 1
error: create: #1 - Name not unique on network
New object id is 
CMD: wtm-50 /usr/sbin/lctl --device ec  cleanup
CMD: wtm-50 /usr/sbin/lctl --device ec  detach
obecho_create_test failed: 3
 sanity test_180a: @@@@@@ FAIL: test_180a failed with 2

Dmesg on client node showed that:

Lustre: DEBUG MARKER: == sanity test 180a: test obdecho on osc == 20:19:52 (1372821592)
Lustre: DEBUG MARKER: /usr/sbin/lctl attach echo_client ec ec_uuid
Lustre: DEBUG MARKER: /usr/sbin/lctl --device ec setup lustre-OST0000_osc
Lustre: DEBUG MARKER: /usr/sbin/lctl --device ec create 1
LustreError: 116008:0:(echo_client.c:2306:echo_create_object()) Cannot create objects: rc = -76
LustreError: 116008:0:(echo_client.c:2330:echo_create_object()) create object failed with: rc = -76
Lustre: DEBUG MARKER: /usr/sbin/lctl --device ec cleanup
Lustre: DEBUG MARKER: /usr/sbin/lctl --device ec detach
Lustre: DEBUG MARKER: /usr/sbin/lctl mark  sanity test_180a: @@@@@@ FAIL: test_180a failed with 2 
Lustre: DEBUG MARKER: sanity test_180a: @@@@@@ FAIL: test_180a failed with 2

Dmesg on OSS node showed that:

Lustre: DEBUG MARKER: == sanity test 180a: test obdecho on osc == 20:19:52 (1372821592)
LustreError: 45459:0:(filter.c:4176:filter_create()) lustre-OST0000: this export (nid 10.10.17.219@tcp) used object group 2 earlier; now it's trying to use group 1! This could be a bug in the MDS. Please report to http://bugzilla.lustre.org/
Lustre: DEBUG MARKER: /usr/sbin/lctl mark  sanity test_180a: @@@@@@ FAIL: test_180a failed with 2 

Maloo report: https://maloo.whamcloud.com/test_sets/c1e8769c-e398-11e2-9137-52540035b04c