[LU-3765] 2.5.0<->2.1.5 interop: sanity test 24u: (mdt_handler.c:224:mdt_lock_pdo_init()) ASSERTION( namelen > 0 ) failed

• Type: Bug
• Resolution: Duplicate
• Priority: Blocker
• Affects Version/s: Lustre 2.1.6, Lustre 2.5.0
• Labels: HB mn1

Environment

Lustre client build: http://build.whamcloud.com/job/lustre-master/1613/
Lustre server build: http://build.whamcloud.com/job/lustre-b2_1/191/ (2.1.5)
Distro/Arch: RHEL6.4/x86_64

• Severity: 3
• Assignee: Lai Siyao
• Reporter: Jian Yu

Description

sanity test 24u hit the following failure on MDS:

11:06:31:Lustre: DEBUG MARKER: == sanity test 24u: create stripe file == 11:06:31 (1376417191)
11:06:31:LustreError: 13255:0:(mdt_handler.c:224:mdt_lock_pdo_init()) ASSERTION( namelen > 0 ) failed: 
11:06:31:LustreError: 13255:0:(mdt_handler.c:224:mdt_lock_pdo_init()) LBUG
11:06:31:Pid: 13255, comm: mdt_01
11:06:31:
11:06:31:Call Trace:
11:06:31: [<ffffffffa04d0785>] libcfs_debug_dumpstack+0x55/0x80 [libcfs]
11:06:31: [<ffffffffa04d0d97>] lbug_with_loc+0x47/0xb0 [libcfs]
11:06:31: [<ffffffffa0bdea65>] mdt_lock_pdo_init+0xe5/0xf0 [mdt]
11:06:31: [<ffffffffa0c127c6>] mdt_reint_open+0x1f6/0x2940 [mdt]
11:06:31: [<ffffffffa077b764>] ? lustre_msg_add_version+0x74/0xd0 [ptlrpc]
11:06:32: [<ffffffffa0ba256e>] ? md_ucred+0x1e/0x60 [mdd]
11:06:32: [<ffffffffa0be15d5>] ? mdt_ucred+0x15/0x20 [mdt]
11:06:32: [<ffffffffa0bf84ec>] ? mdt_root_squash+0x2c/0x3e0 [mdt]
11:06:32: [<ffffffffa0bfcc51>] mdt_reint_rec+0x41/0xe0 [mdt]
11:06:32: [<ffffffffa0bf3ed4>] mdt_reint_internal+0x544/0x8e0 [mdt]
11:06:32: [<ffffffffa0bf453d>] mdt_intent_reint+0x1ed/0x500 [mdt]
11:06:32: [<ffffffffa0bf2c09>] mdt_intent_policy+0x379/0x690 [mdt]
11:06:32: [<ffffffffa0737391>] ldlm_lock_enqueue+0x361/0x8f0 [ptlrpc]
11:06:32: [<ffffffffa075d1ed>] ldlm_handle_enqueue0+0x48d/0xf50 [ptlrpc]
11:06:32: [<ffffffffa0bf3586>] mdt_enqueue+0x46/0x130 [mdt]
11:06:32: [<ffffffffa0be8772>] mdt_handle_common+0x932/0x1750 [mdt]
11:06:32: [<ffffffffa0be9665>] mdt_regular_handle+0x15/0x20 [mdt]
11:06:32: [<ffffffffa078bbae>] ptlrpc_main+0xc4e/0x1a40 [ptlrpc]
11:06:32: [<ffffffffa078af60>] ? ptlrpc_main+0x0/0x1a40 [ptlrpc]
11:06:32: [<ffffffff8100c0ca>] child_rip+0xa/0x20
11:06:32: [<ffffffffa078af60>] ? ptlrpc_main+0x0/0x1a40 [ptlrpc]
11:06:32: [<ffffffffa078af60>] ? ptlrpc_main+0x0/0x1a40 [ptlrpc]
11:06:32: [<ffffffff8100c0c0>] ? child_rip+0x0/0x20
11:06:32:
11:06:32:Kernel panic - not syncing: LBUG

Maloo report: https://maloo.whamcloud.com/test_sets/e3f3b3d8-0525-11e3-8d88-52540035b04c

More instances:
https://maloo.whamcloud.com/test_sets/369e054c-0059-11e3-bb00-52540035b04c
https://maloo.whamcloud.com/test_sets/0bf3fdbc-f8f5-11e2-8917-52540035b04c
https://maloo.whamcloud.com/test_sets/59b2a818-f504-11e2-a8f6-52540035b04c

Issue Links

• duplicates: LU-3544 Writing to new files under NFS export from Lustre will result in ENOENT (SLES11SP2)
• is related to: LU-3233 tgt_cb_last_committed()) ASSERTION( ccb->llcc_exp->exp_obd == ccb->llcc_tgt->lut_obd ) failed:
• is related to: LU-2875 Remove LASSERT()s on return values from req_capsule_client_get() and similar