[LU-559] 1.8<->2.1 interop: LBUG: ASSERTION(diff >= 0) failed: lustre-OST0000: 1 - 33 = -32

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.1.0
• Affects Version/s: Lustre 2.1.0, Lustre 1.8.6

Environment

Lustre Clients:
Tag: 1.8.6-wc1
Distro/Arch: RHEL6/x86_64 (kernel version: 2.6.32_131.2.1.el6)
Build: http://newbuild.whamcloud.com/job/lustre-b1_8/100/arch=x86_64,build_type=client,distro=el6,ib_stack=inkernel/
Network: IB (inkernel OFED)
ENABLE_QUOTA=yes

Lustre Servers:
Tag: v2_0_66_0
Distro/Arch: RHEL6/x86_64 (kernel version: 2.6.32-131.2.1.el6_lustre)
Build: http://newbuild.whamcloud.com/job/lustre-master/228/arch=x86_64,build_type=server,distro=el6,ib_stack=inkernel/
Network: IB (inkernel OFED)

• Severity: 3
• Bugzilla ID: 20,324
• Assignee: Niu Yawei (Inactive)
• Reporter: Jian Yu

Description

While running obdfilter-survey test 2a, the following LBUG occurred on the OSS node:

LustreError: 20123:0:(filter.c:3688:filter_handle_precreate()) ASSERTION(diff >= 0) failed: lustre-OST0000: 1 - 33 = -32
LustreError: 20123:0:(filter.c:3688:filter_handle_precreate()) LBUG
Pid: 20123, comm: ll_ost_119

Call Trace:
[<ffffffffa069d855>] libcfs_debug_dumpstack+0x55/0x80 [libcfs]
[<ffffffffa069de95>] lbug_with_loc+0x75/0xe0 [libcfs]
[<ffffffffa0be7a0d>] filter_create+0x153d/0x1570 [obdfilter]
[<ffffffffa0805498>] ? lustre_msg_check_version+0xc8/0xe0 [ptlrpc]
[<ffffffff8126d016>] ? vsnprintf+0x2b6/0x5f0
[<ffffffffa0808310>] ? lustre_swab_ost_body+0x0/0x10 [ptlrpc]
[<ffffffffa0bb7278>] ost_handle+0x48c8/0x4b90 [ost]
[<ffffffffa06a85d1>] ? libcfs_debug_vmsg2+0x4d1/0xb50 [libcfs]
[<ffffffffa0803144>] ? lustre_msg_get_opc+0x94/0x100 [ptlrpc]
[<ffffffffa080588c>] ? lustre_msg_get_status+0x3c/0xa0 [ptlrpc]
[<ffffffffa0813d3e>] ptlrpc_main+0xb8e/0x1900 [ptlrpc]
[<ffffffff8100c1ca>] child_rip+0xa/0x20
[<ffffffffa08131b0>] ? ptlrpc_main+0x0/0x1900 [ptlrpc]
[<ffffffff8100c1c0>] ? child_rip+0x0/0x20

Kernel panic - not syncing: LBUG
Pid: 20123, comm: ll_ost_119 Tainted: G           ---------------- T 2.6.32-131.2.1.el6_lustre.x86_64 #1
Call Trace:
[<ffffffff814db1b8>] ? panic+0x78/0x143
[<ffffffffa069deeb>] ? lbug_with_loc+0xcb/0xe0 [libcfs]
[<ffffffffa0be7a0d>] ? filter_create+0x153d/0x1570 [obdfilter]
[<ffffffffa0805498>] ? lustre_msg_check_version+0xc8/0xe0 [ptlrpc]
[<ffffffff8126d016>] ? vsnprintf+0x2b6/0x5f0
[<ffffffffa0808310>] ? lustre_swab_ost_body+0x0/0x10 [ptlrpc]
[<ffffffffa0bb7278>] ? ost_handle+0x48c8/0x4b90 [ost]
[<ffffffffa06a85d1>] ? libcfs_debug_vmsg2+0x4d1/0xb50 [libcfs]
[<ffffffffa0803144>] ? lustre_msg_get_opc+0x94/0x100 [ptlrpc]
[<ffffffffa080588c>] ? lustre_msg_get_status+0x3c/0xa0 [ptlrpc]
[<ffffffffa0813d3e>] ? ptlrpc_main+0xb8e/0x1900 [ptlrpc]
[<ffffffff8100c1ca>] ? child_rip+0xa/0x20
[<ffffffffa08131b0>] ? ptlrpc_main+0x0/0x1900 [ptlrpc]
[<ffffffff8100c1c0>] ? child_rip+0x0/0x20

Maloo report: https://maloo.whamcloud.com/test_sets/39a9f35c-bc24-11e0-8bdf-52540025f9af

This is an known issue: bug 20324