Hi, arggh. seems the mail reader decided to wrap things a bit too hard. The kernel-messages are: The specific kernel message when it disables itself is: 2014-03-25T23:55:03.525100+00:00 machine1 kernel: [6822460.984018] bcache: error on 5acb2ff8-db07-4d13-a6ca-dbfdbf1d87eb: key too stale: 97, need_gc 97, disabling caching The potentially root cause message is: 2014-03-24T13:47:34.973100+00:00 machine1 kernel: [6699681.169256] WARNING: CPU: 5 PID: 293092 at /home/thorkild/kernel-w-bcace/drivers/md/bcache/alloc.c:80 bch_inc_gen+0x9a/0xe0 [bcache]() 2014-03-24T13:47:34.973104+00:00 machine1 kernel: [6699681.169258] Modules linked in: iptable_nat nf_nat_ipv4 nf_nat xt_LOG xt_limit xt_tcpudp nf_conntrack_ipv4 nf_defrag_ipv4 xt_set xt_conntrack nf_conntrack iptable_filter ip_tables x_tables ip_set_hash_ip ip_set nfnetlink ipip ip_tunnel tunnel4 eeepc_wmi asus_wmi sparse_keymap mei_me serio_raw video mei mac_hid lpc_ich wmi lp parport bcache raid10 raid456 async_pq async_xor async_memcpy async_raid6_recov async_tx raid1 raid0 multipath linear btrfs raid6_pq e1000e ahci libahci ptp pps_core xor zlib_deflate 2014-03-24T13:47:34.973106+00:00 machine1 kernel: [6699681.169277] CPU: 5 PID: 293092 Comm: kworker/5:0 Not tainted 3.11.10-15-generic #23~f5 2014-03-24T13:47:34.973130+00:00 machine1 kernel: [6699681.169278] Hardware name: System manufacturer System Product Name/P8B WS, BIOS 2106 07/16/2012 2014-03-24T13:47:34.973131+00:00 machine1 kernel: [6699681.169283] Workqueue: bcache bch_journal [bcache] 2014-03-24T13:47:34.973132+00:00 machine1 kernel: [6699681.169284] 0000000000000050 ffff88028e3dba98 ffffffff8173bc0e 0000000000000007 2014-03-24T13:47:34.973133+00:00 machine1 kernel: [6699681.169286] 0000000000000000 ffff88028e3dbad8 ffffffff810653ac ffff88028e3dbad8 2014-03-24T13:47:34.973134+00:00 machine1 kernel: [6699681.169288] ffffc90007764bbc ffff8807f34b6000 000007ffffffffff 0000000000000000 2014-03-24T13:47:34.973134+00:00 machine1 kernel: [6699681.169290] Call Trace: 2014-03-24T13:47:34.973136+00:00 machine1 kernel: [6699681.169294] [<ffffffff8173bc0e>] dump_stack+0x46/0x58 2014-03-24T13:47:34.973137+00:00 machine1 kernel: [6699681.169297] [<ffffffff810653ac>] warn_slowpath_common+0x8c/0xc0 2014-03-24T13:47:34.973138+00:00 machine1 kernel: [6699681.169299] [<ffffffff810653fa>] warn_slowpath_null+0x1a/0x20 2014-03-24T13:47:34.973139+00:00 machine1 kernel: [6699681.169302] [<ffffffffa01d033a>] bch_inc_gen+0x9a/0xe0 [bcache] 2014-03-24T13:47:34.973140+00:00 machine1 kernel: [6699681.169304] [<ffffffff81743ae9>] ? mutex_lock+0x39/0x41 2014-03-24T13:47:34.973140+00:00 machine1 kernel: [6699681.169308] [<ffffffffa01d2b48>] btree_node_free+0x138/0x210 [bcache] 2014-03-24T13:47:34.973141+00:00 machine1 kernel: [6699681.169311] [<ffffffffa01d78a1>] btree_split+0x3f1/0x740 [bcache] 2014-03-24T13:47:34.973142+00:00 machine1 kernel: [6699681.169315] [<ffffffffa01dc509>] ? bch_btree_iter_next_filter+0x39/0x50 [bcache] 2014-03-24T13:47:34.973143+00:00 machine1 kernel: [6699681.169318] [<ffffffffa01d7feb>] bch_btree_insert_recurse+0x3fb/0x510 [bcache] 2014-03-24T13:47:34.973144+00:00 machine1 kernel: [6699681.169322] [<ffffffffa01d7f78>] bch_btree_insert_recurse+0x388/0x510 [bcache] 2014-03-24T13:47:34.973145+00:00 machine1 kernel: [6699681.169325] [<ffffffffa01d8256>] bch_btree_insert+0x156/0x330 [bcache] 2014-03-24T13:47:34.973146+00:00 machine1 kernel: [6699681.169330] [<ffffffffa01e490a>] bch_btree_insert_async+0x1a/0xe0 [bcache] 2014-03-24T13:47:34.973147+00:00 machine1 kernel: [6699681.169333] [<ffffffffa01df429>] bch_journal+0x49/0x300 [bcache] 2014-03-24T13:47:34.973147+00:00 machine1 kernel: [6699681.169336] [<ffffffff81081060>] process_one_work+0x170/0x4a0 2014-03-24T13:47:34.973148+00:00 machine1 kernel: [6699681.169338] [<ffffffff81082121>] worker_thread+0x121/0x390 2014-03-24T13:47:34.973149+00:00 machine1 kernel: [6699681.169339] [<ffffffff81082000>] ? manage_workers.isra.21+0x170/0x170 2014-03-24T13:47:34.973150+00:00 machine1 kernel: [6699681.169342] [<ffffffff81088fe0>] kthread+0xc0/0xd0 2014-03-24T13:47:34.973151+00:00 machine1 kernel: [6699681.169343] [<ffffffff81088f20>] ? flush_kthread_worker+0xb0/0xb0 2014-03-24T13:47:34.973151+00:00 machine1 kernel: [6699681.169346] [<ffffffff817508ac>] ret_from_fork+0x7c/0xb0 2014-03-24T13:47:34.973152+00:00 machine1 kernel: [6699681.169348] [<ffffffff81088f20>] ? flush_kthread_worker+0xb0/0xb0 2014-03-24T13:47:34.973153+00:00 machine1 kernel: [6699681.169349] ---[ end trace 9b2a76687ddee9b0 ]--- -- Thorkild -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html