Ну как проявляется. Сидим себе на Stable или Unstable, киношки смотрим, скайп, в общем пользуемся. И тут внезапно, все замирает, DE целиком зависает. Переходим в один из TTY, логинимся рутом и смотрим что же у нас тут такое .
Сокращенный вариант выхлопа:
[13320.484042] INFO: task kcminit_startup:7427 blocked for more than 120 seconds.
[13320.489878] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[13320.495806] kcminit_startup D ffff880137c13780 0 7427 1 0x00000000
[13320.495810] ffff8800536c7710 0000000000000082 0000000000000000 ffffffff8160d020
[13320.495814] 0000000000013780 ffff880130cebfd8 ffff880130cebfd8 ffff8800536c7710
[13320.495817] ffffffff8110a27a 0000000181070fc1 0000000000000246 ffffc900116ed000
[13320.495820] Call Trace:
[13320.495826] [<ffffffff8110a27a>] ? __d_rehash+0x19/0x4c
[13320.495842] [<ffffffffa00b7bc3>] ? queue_log_writer+0x7e/0xac [reiserfs]
[13320.495846] [<ffffffff8103f6c4>] ? try_to_wake_up+0x197/0x197
[13320.495852] [<ffffffffa00bc4ea>] ? do_journal_begin_r+0x193/0x252 [reiserfs]
[13320.495855] [<ffffffff810ece31>] ? kmem_cache_alloc+0x86/0xea
[13320.495857] [<ffffffff8110cbf9>] ? inode_init_always+0xfa/0x1aa
[13320.495863] [<ffffffffa00bc662>] ? journal_begin+0xb9/0xf2 [reiserfs]
[13320.495868] [<ffffffffa00a4fe4>] ? reiserfs_create+0xef/0x213 [reiserfs]
[13320.495871] [<ffffffff811046f1>] ? vfs_create+0x66/0x88
[13320.495874] [<ffffffff81102709>] ? d_alloc_and_lookup+0x3a/0x60
[13320.495876] [<ffffffff81105135>] ? do_last+0x25b/0x58d
[13320.495878] [<ffffffff81105a5f>] ? path_openat+0xce/0x33a
[13320.495881] [<ffffffff81105d8d>] ? do_filp_open+0x2a/0x6e
[13320.495884] [<ffffffff8134deec>] ? _cond_resched+0x7/0x1c
[13320.495887] [<ffffffff811b41f9>] ? __strncpy_from_user+0x18/0x48
[13320.495890] [<ffffffff8110eb13>] ? alloc_fd+0x64/0x109
[13320.495893] [<ffffffff810f9d59>] ? do_sys_open+0x5e/0xe5
[13320.495896] [<ffffffff81354212>] ? system_call_fastpath+0x16/0x1b
[13320.495900] INFO: task kaccess:7452 blocked for more than 120 seconds.
[13320.501905] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[13320.507970] kaccess D ffff880137c13780 0 7452 7451 0x00000000
[13320.507973] ffff88012892a140 0000000000000082 ffff880100000000 ffffffff8160d020
[13320.507976] 0000000000013780 ffff880018c51fd8 ffff880018c51fd8 ffff88012892a140
[13320.507979] 0000000000000000 0000000181070fc1 0000000000000246 ffffc900116ed000
[13320.507982] Call Trace:
[13320.507989] [<ffffffffa00b7bc3>] ? queue_log_writer+0x7e/0xac [reiserfs]
[13320.507991] [<ffffffff8103f6c4>] ? try_to_wake_up+0x197/0x197
[13320.507997] [<ffffffffa00bc4ea>] ? do_journal_begin_r+0x193/0x252 [reiserfs]
[13320.508000] [<ffffffff810bb3cf>] ? __alloc_pages_nodemask+0x186/0x7aa
[13320.508008] [<ffffffffa00bc662>] ? journal_begin+0xb9/0xf2 [reiserfs]
[13320.508014] [<ffffffffa00aea86>] ? reiserfs_dirty_inode+0x37/0x74 [reiserfs]
[13320.508017] [<ffffffff8104b2ae>] ? current_fs_time+0x31/0x37
[13320.508020] [<ffffffff8111718f>] ? __mark_inode_dirty+0x22/0x17a
[13320.508022] [<ffffffff8110c789>] ? file_update_time+0xda/0x105
[13320.508025] [<ffffffff810b5ce0>] ? __generic_file_aio_write+0x160/0x278
[13320.508028] [<ffffffff810ceca5>] ? __do_fault+0x371/0x3ac
[13320.508031] [<ffffffff81036628>] ? should_resched+0x5/0x23
[13320.508033] [<ffffffff810b5e55>] ? generic_file_aio_write+0x5d/0xb5
[13320.508036] [<ffffffff810fa054>] ? do_sync_write+0xb4/0xec
[13320.508039] [<ffffffff810eb124>] ? kmem_cache_free+0x2d/0x69
[13320.508042] [<ffffffff81164649>] ? security_file_permission+0x16/0x2d
[13320.508044] [<ffffffff810fa745>] ? vfs_write+0xa2/0xe9
[13320.508046] [<ffffffff810fa922>] ? sys_write+0x45/0x6b
[13320.508048] [<ffffffff81354212>] ? system_call_fastpath+0x16/0x1b
[13440.508042] INFO: task kdeinit4:7409 blocked for more than 120 seconds.
[13440.511599] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[13440.515122] kdeinit4 D ffff88006a7d95d0 0 7409 1 0x00000000
[13440.515127] ffff88006a7d95d0 0000000000000086 ffff88013312adf8 ffff8800536c7020
[13440.515133] 0000000000013780 ffff880128627fd8 ffff880128627fd8 ffff88006a7d95d0
[13440.515138] ffff88006a7d95d0 ffffffff811aa985 0000000000000001 ffff880023530dd8
[13440.515143] Call Trace:
[13440.515150] [<ffffffff811aa985>] ? cpumask_any_but+0x24/0x37
[13440.515155] [<ffffffff8134e7ec>] ? __mutex_lock_common.isra.5+0xff/0x164
[13440.515158] [<ffffffff8134e6da>] ? mutex_lock+0x1a/0x2d
[13440.515162] [<ffffffff810b5e36>] ? generic_file_aio_write+0x3e/0xb5
[13440.515167] [<ffffffff810d1454>] ? handle_pte_fault+0x739/0x79f
[13440.515170] [<ffffffff810fa054>] ? do_sync_write+0xb4/0xec
[13440.515174] [<ffffffff81164649>] ? security_file_permission+0x16/0x2d
[13440.515178] [<ffffffff810fa745>] ? vfs_write+0xa2/0xe9
[13440.515180] [<ffffffff810fa922>] ? sys_write+0x45/0x6b
[13440.515184] [<ffffffff81354212>] ? system_call_fastpath+0x16/0x1b
[13440.515187] INFO: task kded4:7412 blocked for more than 120 seconds.
[13440.518606] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[13440.521979] kded4 D ffff88012fc2b7d0 0 7412 1 0x00000000
[13440.521983] ffff88012fc2b7d0 0000000000000086 ffff88012e156198 ffff880131662a70
[13440.521988] 0000000000013780 ffff880126eedfd8 ffff880126eedfd8 ffff88012fc2b7d0
[13440.521993] ffff880126eedc74 0000000000000006 0000000000000006 ffff880126a771f8
[13440.521998] Call Trace:
[13440.522001] [<ffffffff8134e7ec>] ? __mutex_lock_common.isra.5+0xff/0x164
[13440.522005] [<ffffffff8134e6da>] ? mutex_lock+0x1a/0x2d
[13440.522009] [<ffffffff81103188>] ? walk_component+0x1f4/0x406
[13440.522012] [<ffffffff8110fce2>] ? mntget+0x17/0x1c
[13440.522015] [<ffffffff81104041>] ? path_lookupat+0x7c/0x2bd
[13440.522019] [<ffffffff81036628>] ? should_resched+0x5/0x23
[13440.522022] [<ffffffff8134deec>] ? _cond_resched+0x7/0x1c
[13440.522025] [<ffffffff8110429e>] ? do_path_lookup+0x1c/0x87
[13440.522028] [<ffffffff81105d27>] ? user_path_at_empty+0x47/0x7b
[13440.522032] [<ffffffff810fdbad>] ? cp_new_stat+0xe6/0xfa
[13440.522035] [<ffffffff810fdd7a>] ? vfs_fstatat+0x32/0x60
[13440.522038] [<ffffffff810fdeb0>] ? sys_newstat+0x12/0x2b
[13440.522041] [<ffffffff81354212>] ? system_call_fastpath+0x16/0x1b
[13440.522044] INFO: task kglobalaccel:7422 blocked for more than 120 seconds.
[13440.525531] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[13440.528958] kglobalaccel D ffff880137c93780 0 7422 1 0x00000000
[13440.528962] ffff8800855ec830 0000000000000086 ffffffff00000000 ffff880132eaa0c0
[13440.528967] 0000000000013780 ffff880128f0bfd8 ffff880128f0bfd8 ffff8800855ec830
[13440.528972] ffff880128f0bc64 0000000100000006 ffff880128f0bc74 ffff880126a771f8
[13440.528976] Call Trace:
[13440.528980] [<ffffffff8134e7ec>] ? __mutex_lock_common.isra.5+0xff/0x164
[13440.528983] [<ffffffff8134e6da>] ? mutex_lock+0x1a/0x2d
[13440.528986] [<ffffffff81103188>] ? walk_component+0x1f4/0x406
[13440.528989] [<ffffffff81104041>] ? path_lookupat+0x7c/0x2bd
[13440.528992] [<ffffffff81036628>] ? should_resched+0x5/0x23
[13440.528994] [<ffffffff8134deec>] ? _cond_resched+0x7/0x1c
[13440.528997] [<ffffffff8110429e>] ? do_path_lookup+0x1c/0x87
[13440.529000] [<ffffffff81105d27>] ? user_path_at_empty+0x47/0x7b
[13440.529004] [<ffffffff81105d33>] ? user_path_at_empty+0x53/0x7b
[13440.529006] [<ffffffff8134deec>] ? _cond_resched+0x7/0x1c
[13440.529010] [<ffffffff810fdbad>] ? cp_new_stat+0xe6/0xfa
[13440.529014] [<ffffffff8111c833>] ? user_statfs+0x1f/0x48
[13440.529016] [<ffffffff8111c8ae>] ? sys_statfs+0x12/0x2b
[13440.529019] [<ffffffff810fdec1>] ? sys_newstat+0x23/0x2b
[13440.529022] [<ffffffff81354212>] ? system_call_fastpath+0x16/0x1b
Это был хомяк. Прочекал, пока тихо. Похоже оно пыталось записывать данные на этот раздел, если ситуация повторится... придется перевести хомяка на ext3/ext4
