[LU-5766] osc_cache.c:2881:osc_cache_writeback_range() ASSERTION( !ext->oe_hp )

• Status: Resolved
• Project: Lustre
• Affects Version/s: Lustre 2.5.3
• Type: Bug
• Priority: Critical
• Reporter: John Lewis (Inactive)
• Assignee: WC Triage
• Resolution: Cannot Reproduce
• Severity: 3

Description

LustreError: 2553:0:(osc_cache.c:2881:osc_cache_writeback_range()) extent ffff8803bee019c0@

{[1223168 -> 1223423/1223423], [1|0|+|cache|wihuY|ffff88020f85db18], [1048576|256|+|-|ffff8803e675e228|256| (null)]}

LustreError: 2553:0:(osc_cache.c:1167:osc_extent_tree_dump0()) Dump object ffff88020f85db18 extents at osc_cache_writeback_range:2881, mppr: 256.
LustreError: 2553:0:(osc_cache.c:1172:osc_extent_tree_dump0()) extent ffff8803bee01e58@

{[1221888 -> 1222143/1222143], [3|0|+|rpc|wiY|ffff88020f85db18], [1048576|256|+|+|ffff8803e675e228|256|ffff88020d0be7e0]}

in tree 1.
LustreError: 2553:0:(osc_cache.c:1172:osc_extent_tree_dump0()) extent ffff8803fd5c7480@

{[1222144 -> 1222399/1222399], [2|0|-|rpc|wiY|ffff88020f85db18], [1048576|0|-|-|ffff8803e675e228|256|ffff88020d0be7e0]}

in tree 2.
...
LustreError: 2553:0:(osc_cache.c:1176:osc_extent_tree_dump0()) extent ffff8805d4f3c138@

{[1360640 -> 1360895/1360895], [1|0|+|cache|wihuY|ffff88020f85db18], [1048576|256|+|-|ffff8803e675e228|256| (null)]}

hp 18.
LustreError: 2553:0:(osc_cache.c:2881:osc_cache_writeback_range()) ASSERTION( !ext->oe_hp ) failed:
LustreError: 2553:0:(osc_cache.c:2881:osc_cache_writeback_range()) LBUG
Pid: 2553, comm: ptlrpcd_11
Call Trace:
[<ffffffff81006591>] try_stack_unwind+0x161/0x1a0
[<ffffffff81004de9>] dump_trace+0x89/0x440
[<ffffffffa015d897>] libcfs_debug_dumpstack+0x57/0x80 [libcfs]
[<ffffffffa015dde7>] lbug_with_loc+0x47/0xc0 [libcfs]
[<ffffffffa063e33f>] osc_cache_writeback_range+0x101f/0x1070 [osc]
[<ffffffffa0629d71>] osc_lock_flush+0x81/0x260 [osc]
[<ffffffffa062a031>] osc_lock_cancel+0xe1/0x1c0 [osc]
[<ffffffffa02aba7d>] cl_lock_cancel0+0x6d/0x150 [obdclass]
[<ffffffffa02aec86>] cl_lock_hold_release+0x1c6/0x2a0 [obdclass]
[<ffffffffa062c679>] osc_lock_upcall+0x149/0x5f0 [osc]
[<ffffffffa060e12d>] osc_enqueue_fini+0x9d/0x240 [osc]
[<ffffffffa0610e57>] osc_enqueue_interpret+0xe7/0x1c0 [osc]
[<ffffffffa03cc2ac>] ptlrpc_check_set+0x52c/0x1e20 [ptlrpc]
[<ffffffffa03f7893>] ptlrpcd_check+0x523/0x540 [ptlrpc]
[<ffffffffa03f7f33>] ptlrpcd+0x3a3/0x420 [ptlrpc]
[<ffffffff810669ce>] kthread+0x9e/0xb0
[<ffffffff81338874>] kernel_thread_helper+0x4/0x10
Kernel panic - not syncing: LBUG

Comments

[Andreas Dilger]

It would help a great deal to understand this problem if you mentioned what was running on the client when this problem was hit. Is this a production system or a test system?

[James A Simmons]

We haven't seen this problem is sometime. You can close this ticket.

[Peter Jones]

ok