[LU-3546] 2.4.0<->2.3 interop: sanity test 56w: MDS unknown opcode 61

• Type: Bug
• Resolution: Fixed
• Priority: Blocker
• Fix Version/s: Lustre 2.4.1, Lustre 2.5.0
• Affects Version/s: Lustre 2.4.0
• Labels: mn1 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: Jinshan Xiong (Inactive)
• Reporter: Jian Yu

Description

sanity test 56w hung as follows:

== sanity test 56w: check lfs_migrate -c stripe_count works == 00:42:51 (1372405371)
/usr/bin/lfs_migrate -y -c 6 /mnt/lustre/d0.sanity/d56w/file1

Console log on the MDS showed that:

00:39:22:Lustre: DEBUG MARKER: == sanity test 56w: check lfs_migrate -c stripe_count works == 00:42:51 (1372405371)
00:39:44:LustreError: 14887:0:(mdt_handler.c:3026:mdt_msg_check_version()) MDS unknown opcode 61
00:39:44:LustreError: 14887:0:(mdt_handler.c:3065:mdt_handle0()) mdt drops mal-formed request
00:40:25:Lustre: lustre-MDT0000: Client ca0ab3a3-a02f-6aeb-30e4-9241dc18b04d (at 10.10.4.121@tcp) reconnecting
00:40:25:LustreError: 22982:0:(mdt_handler.c:3026:mdt_msg_check_version()) MDS unknown opcode 61
00:40:25:LustreError: 22982:0:(mdt_handler.c:3065:mdt_handle0()) mdt drops mal-formed request
00:41:07:Lustre: lustre-MDT0000: Client ca0ab3a3-a02f-6aeb-30e4-9241dc18b04d (at 10.10.4.121@tcp) reconnecting
00:41:07:LustreError: 14887:0:(mdt_handler.c:3026:mdt_msg_check_version()) MDS unknown opcode 61
00:41:07:LustreError: 14887:0:(mdt_handler.c:3065:mdt_handle0()) mdt drops mal-formed request
00:41:49:Lustre: lustre-MDT0000: Client ca0ab3a3-a02f-6aeb-30e4-9241dc18b04d (at 10.10.4.121@tcp) reconnecting

Maloo report: https://maloo.whamcloud.com/test_sets/0219094e-e0f0-11e2-b3fd-52540035b04c