[LU-6271] (osc_cache.c:3150:discard_cb()) ASSERTION( (!(page->cp_type == CPT_CACHEABLE) || (!PageDirty(cl_page_vmpage(page)))) ) failed:

• Type: Bug
• Resolution: Fixed
• Priority: Blocker
• Fix Version/s: Lustre 2.8.0
• Affects Version/s: Lustre 2.7.0
• Labels: patch
• Environment: Hyperon
• Severity: 3
• Assignee: Jinshan Xiong (Inactive)
• Reporter: Cliff White (Inactive)

Description

While performing failover testing:

LustreError: 167-0: lustre-OST0000-osc-ffff88083b339000: This client was evicted by lustre-OST0000; in progress operations using this service will fail.
Feb 23 09:22:48 iwc260 kernel: LustreError: 51585:0:(ldlm_resource.c:777:ldlm_resource_complain()) lustre-OST0000-osc-ffff88083b339000: namespace resource [0x2d097bb:0x0:0x0].0 (ffff88106a992e40) refcount nonzero (1) after lock cleanup; forcing cleanup.
Feb 23 09:22:48 iwc260 kernel: LustreError: 51585:0:(ldlm_resource.c:1374:ldlm_resource_dump()) --- Resource: [0x2d097bb:0x0:0x0].0 (ffff88106a992e40) refcount = 3
Feb 23 09:22:48 iwc260 kernel: LustreError: 51585:0:(ldlm_resource.c:1377:ldlm_resource_dump()) Granted locks (in reverse order):
Feb 23 09:22:48 iwc260 kernel: LustreError: 51585:0:(ldlm_resource.c:1380:ldlm_resource_dump()) ### ### ns: lustre-OST0000-osc-ffff88083b339000 lock: ffff88106a60d540/0xa1f402a8812988f4 lrc: 3/0,1 mode: PW/PW res: [0x2d097bb:0x0:0x0].0 rrc: 3 type: EXT [0->18446744073709551615] (req 0->8191) flags: 0x126400020000 nid: local remote: 0x72a9f4c80e66e07b expref: -99 pid: 51570 timeout: 0 lvb_type: 1
Feb 23 09:22:48 iwc260 kernel: Lustre: lustre-OST0000-osc-ffff88083b339000: Connection restored to lustre-OST0000 (at 192.168.120.13@o2ib)
Feb 23 09:22:49 iwc260 kernel: LustreError: 90252:0:(osc_cache.c:3150:discard_cb()) ASSERTION( (!(page->cp_type == CPT_CACHEABLE) || (!PageDirty(cl_page_vmpage(page)))) ) failed:
Feb 23 09:22:49 iwc260 kernel: LustreError: 90252:0:(osc_cache.c:3150:discard_cb()) ASSERTION( (!(page->cp_type == CPT_CACHEABLE) || (!PageDirty(cl_page_vmpage(page)))) ) failed:
Feb 23 09:22:49 iwc260 kernel: LustreError: 90252:0:(osc_cache.c:3150:discard_cb()) LBUG
Feb 23 09:22:49 iwc260 kernel: LustreError: 90252:0:(osc_cache.c:3150:discard_cb()) LBUG
Feb 23 09:22:49 iwc260 kernel: Pid: 90252, comm: ldlm_bl_36
Feb 23 09:22:49 iwc260 kernel:
Feb 23 09:22:49 iwc260 kernel: Call Trace:
Feb 23 09:22:49 iwc260 kernel: [<ffffffffa0435895>] libcfs_debug_dumpstack+0x55/0x80 [libcfs]
Feb 23 09:22:49 iwc260 kernel: [<ffffffffa0435e97>] lbug_with_loc+0x47/0xb0 [libcfs]
Feb 23 09:22:49 iwc260 kernel: [<ffffffffa0b2ba56>] discard_cb+0x156/0x190 [osc]
Feb 23 09:22:49 iwc260 kernel: [<ffffffffa0b2bdcc>] osc_page_gang_lookup+0x1ac/0x330 [osc]
Feb 23 09:22:49 iwc260 kernel: [<ffffffffa0b2b900>] ? discard_cb+0x0/0x190 [osc]
Feb 23 09:22:49 iwc260 kernel: [<ffffffffa0b2c094>] osc_lock_discard_pages+0x144/0x240 [osc]
Feb 23 09:22:49 iwc260 kernel: [<ffffffffa04461c1>] ? libcfs_debug_msg+0x41/0x50 [libcfs]
Feb 23 09:22:49 iwc260 kernel: [<ffffffffa0b2b900>] ? discard_cb+0x0/0x190 [osc]
Feb 23 09:22:49 iwc260 kernel: [<ffffffffa0b2298b>] osc_lock_flush+0x8b/0x260 [osc]
Feb 23 09:22:49 iwc260 kernel: [<ffffffffa0b22e08>] osc_ldlm_blocking_ast+0x2a8/0x3c0 [osc]
Feb 23 09:22:49 iwc260 kernel: [<ffffffffa0761a6c>] ldlm_cancel_callback+0x6c/0x170 [ptlrpc]
Feb 23 09:22:49 iwc260 kernel: [<ffffffffa077450a>] ldlm_cli_cancel_local+0x8a/0x470 [ptlrpc]
Feb 23 09:22:49 iwc260 kernel: [<ffffffffa0779120>] ldlm_cli_cancel+0x60/0x360 [ptlrpc]
Feb 23 09:22:49 iwc260 kernel: [<ffffffffa0b22c3b>] osc_ldlm_blocking_ast+0xdb/0x3c0 [osc]
Feb 23 09:22:49 iwc260 kernel: [<ffffffffa04461c1>] ? libcfs_debug_msg+0x41/0x50 [libcfs]
Feb 23 09:22:49 iwc260 kernel: [<ffffffffa077cb60>] ldlm_handle_bl_callback+0x130/0x400 [ptlrpc]
Feb 23 09:22:49 iwc260 kernel: [<ffffffffa077d0c1>] ldlm_bl_thread_main+0x291/0x3f0 [ptlrpc]
Feb 23 09:22:49 iwc260 kernel: [<ffffffff81061d00>] ? default_wake_function+0x0/0x20
Feb 23 09:22:49 iwc260 kernel: [<ffffffffa077ce30>] ? ldlm_bl_thread_main+0x0/0x3f0 [ptlrpc]
Feb 23 09:22:49 iwc260 kernel: [<ffffffff8109abf6>] kthread+0x96/0xa0
Feb 23 09:22:49 iwc260 kernel: [<ffffffff8100c20a>] child_rip+0xa/0x20
Feb 23 09:22:49 iwc260 kernel: [<ffffffff8109ab60>] ? kthread+0x0/0xa0
Feb 23 09:22:49 iwc260 kernel: [<ffffffff8100c200>] ? child_rip+0x0/0x20

Issue Links

• is blocking: LU-6843 Support RHEL7 on b2_5_fe
• is duplicated by: LU-7066 osc_cache.c:2944:osc_cache_writeback_range()) ASSERTION( hp == 0 && discard == 0 ) failed
• is related to: LU-12142 Hang in OSC on eviction - threads stuck in read() and ldlm_bl_NN