Hi, Running 2.6.39-rc3+ and now again on 2.6.39-rc4+ (I've not tested -rc1 or -rc2) I've hit a "dying machine" where processes writing to disk end up in D state. From occurrence with -rc3+ I don't have logs as those never hit the disk, for -rc4+ I have the following (sysrq+t was too big, what I have of it misses a dozen of kernel tasks - if needed, please ask): The -rc4 kernel is at commit 584f79046780e10cb24367a691f8c28398a00e84 (+ 1 patch of mine to stop disk on reboot), full dmesg available if needed; kernel config attached (only selected options). In case there is something I should do at next occurrence please tell. Unfortunately I have no trigger for it and it does not happen very often. Thanks, Bruno [ 0.000000] Linux version 2.6.39-rc4-00120-g73b5b55 (kbuild@neptune) (gcc version 4.4.5 (Gentoo 4.4.5 p1.2, pie-0.4.5) ) #12 Thu Apr 21 19:28:45 CEST 2011 [32040.120055] INFO: task flush-8:0:1665 blocked for more than 120 seconds. [32040.120068] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [32040.120077] flush-8:0 D 00000000 4908 1665 2 0x00000000 [32040.120099] f55efb5c 00000046 00000000 00000000 00000000 00000001 e0382924 00000000 [32040.120118] f55efb0c f55efb5c 00000004 f629ba70 572f01a2 00001cfe f629ba70 ffffffc0 [32040.120135] f55efc68 f55efb30 f889d7f8 f55efb20 00000000 f55efc68 e0382900 f55efc94 [32040.120153] Call Trace: [32040.120220] [<f889d7f8>] ? xfs_bmap_search_multi_extents+0x88/0xe0 [xfs] [32040.120239] [<c109ce1d>] ? kmem_cache_alloc+0x2d/0x110 [32040.120294] [<f88c88ca>] ? xlog_space_left+0x2a/0xc0 [xfs] [32040.120346] [<f88c85cb>] xlog_wait+0x4b/0x70 [xfs] [32040.120359] [<c102ca00>] ? try_to_wake_up+0xc0/0xc0 [32040.120411] [<f88c948b>] xlog_grant_log_space+0x8b/0x240 [xfs] [32040.120464] [<f88c936e>] ? xlog_grant_push_ail+0xbe/0xf0 [xfs] [32040.120516] [<f88c99db>] xfs_log_reserve+0xab/0xb0 [xfs] [32040.120571] [<f88d6dc8>] xfs_trans_reserve+0x78/0x1f0 [xfs] [32040.120625] [<f88c560a>] xfs_iomap_write_allocate+0x27a/0x3a0 [xfs] [32040.120680] [<f88df192>] xfs_map_blocks+0x1d2/0x210 [xfs] [32040.120733] [<f88dfbde>] xfs_vm_writepage+0x2be/0x4e0 [xfs] [32040.120749] [<c107ab4b>] __writepage+0xb/0x30 [32040.120760] [<c107bb06>] write_cache_pages+0x156/0x350 [32040.120771] [<c107ab40>] ? set_page_dirty+0x60/0x60 [32040.120784] [<c107bd3b>] generic_writepages+0x3b/0x60 [32040.120836] [<f88def91>] xfs_vm_writepages+0x21/0x30 [xfs] [32040.120847] [<c107bd77>] do_writepages+0x17/0x30 [32040.120859] [<c10c1667>] writeback_single_inode+0x77/0x1d0 [32040.120869] [<c10c1c36>] writeback_sb_inodes+0x96/0x130 [32040.120880] [<c10c21ae>] writeback_inodes_wb+0x6e/0xf0 [32040.120890] [<c10c2442>] wb_writeback+0x212/0x260 [32040.120901] [<c10c2655>] wb_do_writeback+0x1c5/0x1d0 [32040.120912] [<c10c26d1>] bdi_writeback_thread+0x71/0x130 [32040.120923] [<c10c2660>] ? wb_do_writeback+0x1d0/0x1d0 [32040.120936] [<c10458c4>] kthread+0x74/0x80 [32040.120946] [<c1045850>] ? kthreadd+0xc0/0xc0 [32040.120959] [<c13332f6>] kernel_thread_helper+0x6/0xd [32040.120989] INFO: task kworker/0:2:6126 blocked for more than 120 seconds. [32040.120996] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [32040.121003] kworker/0:2 D e05a3dfc 6400 6126 2 0x00000000 [32040.121024] e05a3e6c 00000046 00002925 e05a3dfc c104b7f1 00000296 1b84e819 e05a3e04 [32040.121042] e05a3e1c e05a3e6c 00000004 f4502ec0 8c876f48 00001cfb f4502ec0 2d2b9b93 [32040.121059] 0000189c dd283f80 00000000 0016e360 e05a3e50 c10086c7 e05a3ee0 0009201a [32040.121077] Call Trace: [32040.121089] [<c104b7f1>] ? sched_clock_tick+0x51/0x80 [32040.121105] [<c10086c7>] ? time_cpufreq_notifier+0x57/0x120 [32040.121117] [<c109ce1d>] ? kmem_cache_alloc+0x2d/0x110 [32040.121169] [<f88c88ca>] ? xlog_space_left+0x2a/0xc0 [xfs] [32040.121220] [<f88c85cb>] xlog_wait+0x4b/0x70 [xfs] [32040.121231] [<c102ca00>] ? try_to_wake_up+0xc0/0xc0 [32040.121283] [<f88c948b>] xlog_grant_log_space+0x8b/0x240 [xfs] [32040.121335] [<f88c936e>] ? xlog_grant_push_ail+0xbe/0xf0 [xfs] [32040.121402] [<f88c99db>] xfs_log_reserve+0xab/0xb0 [xfs] [32040.121455] [<f88d6dc8>] xfs_trans_reserve+0x78/0x1f0 [xfs] [32040.121506] [<f88bafe1>] xfs_fs_log_dummy+0x41/0x90 [xfs] [32040.121559] [<f88e9f12>] xfs_sync_worker+0x62/0x70 [xfs] [32040.121570] [<c104075c>] process_one_work+0xfc/0x320 [32040.121621] [<f88e9eb0>] ? xfs_syncd_init+0xb0/0xb0 [xfs] [32040.121633] [<c1042206>] worker_thread+0x106/0x330 [32040.121643] [<c1042100>] ? manage_workers+0x340/0x340 [32040.121654] [<c10458c4>] kthread+0x74/0x80 [32040.121664] [<c1045850>] ? kthreadd+0xc0/0xc0 [32040.121675] [<c13332f6>] kernel_thread_helper+0x6/0xd [32040.121685] INFO: task tar:9048 blocked for more than 120 seconds. [32040.121692] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [32040.121699] tar D e4907dac 5540 9048 9039 0x00000000 [32040.121720] e4907db4 00200082 00000000 e4907dac f88c88ca f4a58d24 00000002 00000000 [32040.121737] e4907d64 e4907db4 00000004 e0ee2310 e349aa9d 00001cf9 e0ee2310 e4907d94 [32040.121755] 008d71a4 00000000 00001fbd 00947400 f606d880 0000402e 00000000 e4907db4 [32040.121772] Call Trace: [32040.121823] [<f88c88ca>] ? xlog_space_left+0x2a/0xc0 [xfs] [32040.121876] [<f88c936e>] ? xlog_grant_push_ail+0xbe/0xf0 [xfs] [32040.121929] [<f88c94f2>] xlog_grant_log_space+0xf2/0x240 [xfs] [32040.121941] [<c102ca00>] ? try_to_wake_up+0xc0/0xc0 [32040.121992] [<f88c99db>] xfs_log_reserve+0xab/0xb0 [xfs] [32040.122047] [<f88d6dc8>] xfs_trans_reserve+0x78/0x1f0 [xfs] [32040.122100] [<f88dae3d>] xfs_create+0x14d/0x520 [xfs] [32040.122152] [<f88e69da>] xfs_vn_mknod+0x9a/0x180 [xfs] [32040.122204] [<f88e6ad8>] xfs_vn_mkdir+0x18/0x20 [xfs] [32040.122216] [<c10adf5e>] vfs_mkdir+0x6e/0xa0 [32040.122266] [<f88e6ac0>] ? xfs_vn_mknod+0x180/0x180 [xfs] [32040.122278] [<c10b0928>] sys_mkdirat+0xc8/0xe0 [32040.122292] [<c108e46f>] ? remove_vma+0x3f/0x60 [32040.122303] [<c108f23c>] ? do_munmap+0x20c/0x2f0 [32040.122314] [<c10b0960>] sys_mkdir+0x20/0x30 [32040.122325] [<c1332dd0>] sysenter_do_call+0x12/0x26
Attachment:
config
Description: Binary data
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