From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marcin Subject: Re: [bcachefs][tier] INFO: task bch_tier_read:21414 blocked for more than 120 seconds. Date: Wed, 12 Oct 2016 21:51:17 +0200 Message-ID: <856aa94d33dfbd22dbb377b5de22b0cc@mejor.pl> References: <20161012012600.s2cq5ac37hwwrp3e@kmo-pixel> <20161012121105.ym3sed4tgc2vx3dh@kmo-pixel> <8312944b83a28b36f054c7a44d0fcbd8@mejor.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Return-path: Received: from jowisz.mejor.pl ([81.4.120.72]:5920 "EHLO jowisz.mejor.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932603AbcJLTvd (ORCPT ); Wed, 12 Oct 2016 15:51:33 -0400 In-Reply-To: Sender: linux-bcache-owner@vger.kernel.org List-Id: linux-bcache@vger.kernel.org To: Kent Overstreet Cc: linux-bcache@vger.kernel.org W dniu 2016-10-12 21:19, Kent Overstreet napisał(a): > It needs to return true, not false. It's not a bash, ok:) With: --- a/drivers/md/bcache/journal.h +++ b/drivers/md/bcache/journal.h @@ -184,7 +184,8 @@ static inline unsigned jset_u64s(unsigned u64s) static inline bool journal_flushes_device(struct cache *ca) { - return ca->mi.tier == 0; + /** return ca->mi.tier == 0; **/ + return true; } void bch_journal_start(struct cache_set *); I'm getting: [ 89.029997] WARNING: CPU: 0 PID: 2356 at mm/page_alloc.c:3421 __alloc_pages_nodemask+0x9d4/0xdb0 while mounting. WHile copying I'm getting: [ 489.430063] INFO: task bch_tier_read:2383 blocked for more than 120 seconds. [ 489.430066] Tainted: G W 4.8.0+ #1 [ 489.430067] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 489.430069] bch_tier_read D ffff88002e447848 0 2383 2 0x00000000 [ 489.430075] ffff88002e447848 ffffffff8180b4c0 ffff88002ebf9a80 ffffffff81353740 [ 489.430079] ffff88002e448000 ffff88003fc16d80 7fffffffffffffff ffff880037649728 [ 489.430083] ffff8800376496f8 ffff88002e447860 ffffffff81473730 0000000000000000 [ 489.430087] Call Trace: [ 489.430095] [] ? scsi_init_io+0x40/0x1d0 [ 489.430099] [] schedule+0x30/0x80 [ 489.430103] [] schedule_timeout+0x24d/0x300 [ 489.430105] [] ? scsi_host_alloc_command+0x3f/0xb0 [ 489.430109] [] ? ktime_get+0x37/0xa0 [ 489.430111] [] io_schedule_timeout+0x9f/0x110 [ 489.430115] [] get_request+0x40d/0x840 [ 489.430119] [] ? wake_atomic_t_function+0x60/0x60 [ 489.430122] [] blk_queue_bio+0x117/0x3c0 [ 489.430125] [] generic_make_request+0xcb/0x1a0 [ 489.430161] [] bch_submit_bbio+0x66/0xf0 [bcache] [ 489.430182] [] bch_submit_bbio_replicas+0xf8/0x190 [bcache] [ 489.430204] [] __bch_write+0x2f6/0x710 [bcache] [ 489.430225] [] bch_write+0x85/0x3b0 [bcache] [ 489.430246] [] do_pending_writes+0xa7/0x150 [bcache] [ 489.430275] [] bch_move_ctxt_wait+0x38/0xb0 [bcache] [ 489.430278] [] ? wake_atomic_t_function+0x60/0x60 [ 489.430297] [] read_tiering+0x143/0x4c0 [bcache] [ 489.430300] [] ? __schedule+0x2cd/0x720 [ 489.430316] [] ? bch_bucket_stats_read_cache+0xda/0x150 [bcache] [ 489.430335] [] bch_tiering_thread+0x247/0x250 [bcache] [ 489.430354] [] ? read_tiering+0x4c0/0x4c0 [bcache] [ 489.430357] [] kthread+0xc4/0xe0 [ 489.430360] [] ret_from_fork+0x1f/0x40 [ 489.430362] [] ? kthread_worker_fn+0x160/0x160 [ 612.310040] INFO: task kworker/0:1:31 blocked for more than 120 seconds. [ 612.310043] Tainted: G W 4.8.0+ #1 [ 612.310044] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 612.310046] kworker/0:1 D ffff88003e34fcc8 0 31 2 0x00000000 [ 612.310085] Workqueue: events_freezable btree_node_write_work [bcache] [ 612.310088] ffff88003e34fcc8 ffffffff8180b4c0 ffff88003e261a80 0000000200000000 [ 612.310092] ffff88003e350000 ffff880009de7618 ffff88003e261a80 0000000000000000 [ 612.310096] ffff880009de7630 ffff88003e34fce0 ffffffff81473730 7fffffffffffffff [ 612.310100] Call Trace: [ 612.310106] [] schedule+0x30/0x80 [ 612.310110] [] schedule_timeout+0x24d/0x300 [ 612.310132] [] ? six_lock_type+0x60/0x340 [bcache] [ 612.310135] [] __down+0x5f/0xa0 [ 612.310138] [] down+0x3c/0x50 [ 612.310157] [] __bch_btree_node_write+0x25/0xa0 [bcache] [ 612.310175] [] bch_btree_node_write_dirty+0x36/0x50 [bcache] [ 612.310193] [] btree_node_write_work+0x12/0x20 [bcache] [ 612.310196] [] process_one_work+0x15b/0x470 [ 612.310199] [] worker_thread+0x46/0x4e0 [ 612.310201] [] ? process_one_work+0x470/0x470 [ 612.310203] [] ? process_one_work+0x470/0x470 [ 612.310206] [] kthread+0xc4/0xe0 [ 612.310210] [] ret_from_fork+0x1f/0x40 [ 612.310213] [] ? kthread_worker_fn+0x160/0x160 [ 612.310218] INFO: task kworker/u8:5:71 blocked for more than 120 seconds. [ 612.310219] Tainted: G W 4.8.0+ #1 [ 612.310220] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 612.310221] kworker/u8:5 D ffff880037513798 0 71 2 0x00000000 [ 612.310228] Workqueue: writeback wb_workfn (flush-bcache-1) [ 612.310231] ffff880037513798 ffff88003e144f80 ffff88003cfab500 ffff88003a3fc860 [ 612.310235] ffff880037514000 ffff8800375137e0 0000000000000004 0000000000000004 [ 612.310238] ffff8800376cd850 ffff8800375137b0 ffffffff81473730 0000000000000002 [ 612.310242] Call Trace: [ 612.310245] [] schedule+0x30/0x80 [ 612.310274] [] six_lock_type+0x232/0x340 [bcache] [ 612.310290] [] btree_node_lock_write+0x8e/0xc0 [bcache] [ 612.310306] [] btree_node_lock_for_insert+0x51/0x90 [bcache] [ 612.310322] [] __bch_btree_insert_at+0x230/0x990 [bcache] [ 612.310338] [] ? bch_btree_iter_peek_with_holes+0x8a/0x290 [bcache] [ 612.310356] [] __bch_write_inode+0x22c/0x2b0 [bcache] [ 612.310360] [] ? find_busiest_group+0x118/0x930 [ 612.310377] [] bch_vfs_write_inode+0x3c/0x90 [bcache] [ 612.310380] [] __writeback_single_inode+0x24f/0x320 [ 612.310382] [] writeback_sb_inodes+0x1d5/0x490 [ 612.310385] [] __writeback_inodes_wb+0x8d/0xc0 [ 612.310387] [] wb_writeback+0x22a/0x2e0 [ 612.310390] [] wb_workfn+0x2e8/0x3b0 [ 612.310392] [] process_one_work+0x15b/0x470 [ 612.310394] [] worker_thread+0x46/0x4e0 [ 612.310396] [] ? process_one_work+0x470/0x470 [ 612.310398] [] kthread+0xc4/0xe0 [ 612.310401] [] ret_from_fork+0x1f/0x40 [ 612.310403] [] ? kthread_worker_fn+0x160/0x160 [ 612.310425] INFO: task bch_tier_read:2383 blocked for more than 120 seconds. [ 612.310427] Tainted: G W 4.8.0+ #1 [ 612.310427] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 612.310428] bch_tier_read D ffff88002e447848 0 2383 2 0x00000000 [ 612.310432] ffff88002e447848 ffffffff8180b4c0 ffff88002ebf9a80 ffffffff81353740 [ 612.310435] ffff88002e448000 ffff88003fc16d80 7fffffffffffffff ffff880037649728 [ 612.310438] ffff8800376496f8 ffff88002e447860 ffffffff81473730 0000000000000000 [ 612.310441] Call Trace: [ 612.310444] [] ? scsi_init_io+0x40/0x1d0 [ 612.310446] [] schedule+0x30/0x80 [ 612.310449] [] schedule_timeout+0x24d/0x300 [ 612.310451] [] ? scsi_host_alloc_command+0x3f/0xb0 [ 612.310454] [] ? ktime_get+0x37/0xa0 [ 612.310456] [] io_schedule_timeout+0x9f/0x110 [ 612.310459] [] get_request+0x40d/0x840 [ 612.310462] [] ? wake_atomic_t_function+0x60/0x60 [ 612.310465] [] blk_queue_bio+0x117/0x3c0 [ 612.310467] [] generic_make_request+0xcb/0x1a0 [ 612.310485] [] bch_submit_bbio+0x66/0xf0 [bcache] [ 612.310503] [] bch_submit_bbio_replicas+0xf8/0x190 [bcache] [ 612.310521] [] __bch_write+0x2f6/0x710 [bcache] [ 612.310539] [] bch_write+0x85/0x3b0 [bcache] [ 612.310558] [] do_pending_writes+0xa7/0x150 [bcache] [ 612.310576] [] bch_move_ctxt_wait+0x38/0xb0 [bcache] [ 612.310578] [] ? wake_atomic_t_function+0x60/0x60 [ 612.310597] [] read_tiering+0x143/0x4c0 [bcache] [ 612.310600] [] ? __schedule+0x2cd/0x720 [ 612.310616] [] ? bch_bucket_stats_read_cache+0xda/0x150 [bcache] [ 612.310635] [] bch_tiering_thread+0x247/0x250 [bcache] [ 612.310654] [] ? read_tiering+0x4c0/0x4c0 [bcache] [ 612.310656] [] kthread+0xc4/0xe0 [ 612.310659] [] ret_from_fork+0x1f/0x40 [ 612.310661] [] ? kthread_worker_fn+0x160/0x160 [...]