[LU-1483] Test failure on test suite lustre-rsync-test

• Type: Bug
• Resolution: Duplicate
• Priority: Minor
• Environment: client: 2.1.1-rhel6; server: lustre-master-tag-2.2.54-rhel6
• Severity: 3
• Assignee: WC Triage
• Reporter: Maloo

Description

This issue was created by maloo for bobijam <[e-mail]>

This issue relates to the following test suite run: https://maloo.whamcloud.com/test_sets/81757bd0-ad72-11e1-8152-52540035b04c.

The MDS was busy in htable_lookup while handling one request and refused the client further reconnection.

in MDS console log

19:37:39:INFO: task mdt_03:991 blocked for more than 120 seconds.
19:37:39:"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
19:37:39:mdt_03 D 0000000000000000 0 991 2 0x00000080
19:37:40: ffff880036f53ab0 0000000000000046 ffff880072ab3d80 ffff880036f53b30
19:37:40: ffff880036f53a60 ffffc900019e402c 0000000000000246 0000000000000246
19:37:41: ffff88005ef7baf8 ffff880036f53fd8 000000000000f4e8 ffff88005ef7baf8
19:37:41:Call Trace:
19:37:41: [<ffffffffa0494ce4>] ? htable_lookup+0x1a4/0x1c0 [obdclass]
19:37:41: [<ffffffffa09e161e>] cfs_waitq_wait+0xe/0x10 [libcfs]
19:37:41: [<ffffffffa0494db0>] lu_object_find_at+0xb0/0x450 [obdclass]
19:37:41: [<ffffffff8105ea30>] ? default_wake_function+0x0/0x20
19:37:41: [<ffffffff8126af85>] ? _atomic_dec_and_lock+0x55/0x80
19:37:41: [<ffffffffa049518f>] lu_object_find_slice+0x1f/0x80 [obdclass]
19:37:41: [<ffffffffa0958160>] mdd_object_find+0x10/0x70 [mdd]
19:37:41: [<ffffffffa0960137>] mdd_path+0x2e7/0xe50 [mdd]
19:37:41: [<ffffffffa0494d8c>] ? lu_object_find_at+0x8c/0x450 [obdclass]
19:37:41: [<ffffffffa095fe50>] ? mdd_path+0x0/0xe50 [mdd]
19:37:41: [<ffffffffa08dadb4>] cml_path+0x74/0x150 [cmm]
19:37:41: [<ffffffffa0a515ea>] ? mdt_object_find+0x7a/0x100 [mdt]
19:37:41: [<ffffffffa0a558bf>] mdt_get_info+0x50f/0x810 [mdt]
19:37:41: [<ffffffffa0a516c7>] ? mdt_unpack_req_pack_rep+0x57/0x430 [mdt]
19:37:41: [<ffffffffa0a577ed>] mdt_handle_common+0x74d/0x1400 [mdt]
19:37:42: [<ffffffffa0a58575>] mdt_regular_handle+0x15/0x20 [mdt]
19:37:42: [<ffffffffa061e261>] ptlrpc_server_handle_request+0x3c1/0xcb0 [ptlrpc]
19:37:42: [<ffffffffa09e14fe>] ? cfs_timer_arm+0xe/0x10 [libcfs]
19:37:42: [<ffffffffa09eec09>] ? lc_watchdog_touch+0x79/0x110 [libcfs]
19:37:42: [<ffffffffa0618312>] ? ptlrpc_wait_event+0xb2/0x2c0 [ptlrpc]
19:37:42: [<ffffffff81051ba3>] ? __wake_up+0x53/0x70
19:37:42: [<ffffffffa061f26f>] ptlrpc_main+0x71f/0x1210 [ptlrpc]
19:37:42: [<ffffffffa061eb50>] ? ptlrpc_main+0x0/0x1210 [ptlrpc]
19:37:42: [<ffffffff8100c14a>] child_rip+0xa/0x20
19:37:42: [<ffffffffa061eb50>] ? ptlrpc_main+0x0/0x1210 [ptlrpc]
19:37:42: [<ffffffffa061eb50>] ? ptlrpc_main+0x0/0x1210 [ptlrpc]
19:37:42: [<ffffffff8100c140>] ? child_rip+0x0/0x20

Issue Links

• duplicates: LU-1640 Test failure on test suite lustre-rsync-test, subtest test_2c