Hello tryed bcache on 3.13-1-amd64 (from debian) Steps: git clone https://github.com/g2p/bcache-tools.git cd bcache-tools/ make dd if=/dev/zero of=data bs=1M count=64 losetup -d /dev/loop0; losetup /dev/loop0 /tmp/bb/bcache-tools/data make-bcache -C /dev/ram0 -B /dev/ram1 modprobe bcache echo /dev/ram0 > /sys/fs/bcache/register echo /dev/loop0 > /sys/fs/bcache/register Got: May 19 17:32:55 bump kernel: [670838.280487] bcache: register_bdev() registered backing device ram0 May 19 17:33:02 bump kernel: [670845.209612] bcache: run_cache_set() invalidating existing data May 19 17:33:02 bump kernel: [670845.277214] bcache: bch_cached_dev_attach() Caching ram0 as bcache0 on set d01c215c-f038-4e85-9f7f-d1133f080b55 May 19 17:33:02 bump kernel: [670845.277230] bcache: register_cache() registered cache device loop0 May 19 17:35:28 bump kernel: [670991.228242] INFO: task bcache_writebac:6378 blocked for more than 120 seconds. May 19 17:35:28 bump kernel: [670991.228246] Tainted: G C 3.13-1-amd64 #1 May 19 17:35:28 bump kernel: [670991.228247] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 19 17:35:28 bump kernel: [670991.228248] bcache_writebac D ffff8804f2ab2350 0 6378 2 0x00000000 May 19 17:35:28 bump kernel: [670991.228251] ffff8804f2ab2010 0000000000000046 0000000000014280 0000000000014280 May 19 17:35:28 bump kernel: [670991.228252] ffff880725423fd8 ffff8804f2ab2010 ffff8805de3bba40 ffff8807f8410000 May 19 17:35:28 bump kernel: [670991.228254] ffffffffa0866790 0000000000000000 0000000000000000 0000000000000000 May 19 17:35:28 bump kernel: [670991.228255] Call Trace: May 19 17:35:28 bump kernel: [670991.228262] [<ffffffffa0866790>] ? write_dirty_finish+0x210/0x210 [bcache] May 19 17:35:28 bump kernel: [670991.228265] [<ffffffff8107bb2d>] ? kthread+0x9d/0xe0 May 19 17:35:28 bump kernel: [670991.228266] [<ffffffff8107ba90>] ? kthread_create_on_node+0x180/0x180 May 19 17:35:28 bump kernel: [670991.228270] [<ffffffff814aeacc>] ? ret_from_fork+0x7c/0xb0 May 19 17:35:28 bump kernel: [670991.228271] [<ffffffff8107ba90>] ? kthread_create_on_node+0x180/0x180 May 19 17:37:28 bump kernel: [671111.112160] INFO: task bcache_writebac:6378 blocked for more than 120 seconds. May 19 17:37:28 bump kernel: [671111.112165] Tainted: G C 3.13-1-amd64 #1 May 19 17:37:28 bump kernel: [671111.112166] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 19 17:37:28 bump kernel: [671111.112167] bcache_writebac D ffff8804f2ab2350 0 6378 2 0x00000000 May 19 17:37:28 bump kernel: [671111.112170] ffff8804f2ab2010 0000000000000046 0000000000014280 0000000000014280 May 19 17:37:28 bump kernel: [671111.112172] ffff880725423fd8 ffff8804f2ab2010 ffff8805de3bba40 ffff8807f8410000 May 19 17:37:28 bump kernel: [671111.112174] ffffffffa0866790 0000000000000000 0000000000000000 0000000000000000 May 19 17:37:28 bump kernel: [671111.112175] Call Trace: May 19 17:37:28 bump kernel: [671111.112183] [<ffffffffa0866790>] ? write_dirty_finish+0x210/0x210 [bcache] May 19 17:37:28 bump kernel: [671111.112186] [<ffffffff8107bb2d>] ? kthread+0x9d/0xe0 May 19 17:37:28 bump kernel: [671111.112188] [<ffffffff8107ba90>] ? kthread_create_on_node+0x180/0x180 May 19 17:37:28 bump kernel: [671111.112191] [<ffffffff814aeacc>] ? ret_from_fork+0x7c/0xb0 May 19 17:37:28 bump kernel: [671111.112193] [<ffffffff8107ba90>] ? kthread_create_on_node+0x180/0x180 May 19 17:39:28 bump kernel: [671230.996097] INFO: task bcache_writebac:6378 blocked for more than 120 seconds. May 19 17:39:28 bump kernel: [671230.996101] Tainted: G C 3.13-1-amd64 #1 May 19 17:39:28 bump kernel: [671230.996102] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 19 17:39:28 bump kernel: [671230.996103] bcache_writebac D ffff8804f2ab2350 0 6378 2 0x00000000 May 19 17:39:28 bump kernel: [671230.996106] ffff8804f2ab2010 0000000000000046 0000000000014280 0000000000014280 May 19 17:39:28 bump kernel: [671230.996108] ffff880725423fd8 ffff8804f2ab2010 ffff8805de3bba40 ffff8807f8410000 May 19 17:39:28 bump kernel: [671230.996109] ffffffffa0866790 0000000000000000 0000000000000000 0000000000000000 May 19 17:39:28 bump kernel: [671230.996111] Call Trace: May 19 17:39:28 bump kernel: [671230.996118] [<ffffffffa0866790>] ? write_dirty_finish+0x210/0x210 [bcache] May 19 17:39:28 bump kernel: [671230.996121] [<ffffffff8107bb2d>] ? kthread+0x9d/0xe0 May 19 17:39:28 bump kernel: [671230.996123] [<ffffffff8107ba90>] ? kthread_create_on_node+0x180/0x180 May 19 17:39:28 bump kernel: [671230.996126] [<ffffffff814aeacc>] ? ret_from_fork+0x7c/0xb0 May 19 17:39:28 bump kernel: [671230.996127] [<ffffffff8107ba90>] ? kthread_create_on_node+0x180/0x180 May 19 17:41:28 bump kernel: [671350.880041] INFO: task bcache_writebac:6378 blocked for more than 120 seconds. May 19 17:41:28 bump kernel: [671350.880045] Tainted: G C 3.13-1-amd64 #1 May 19 17:41:28 bump kernel: [671350.880046] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 19 17:41:28 bump kernel: [671350.880047] bcache_writebac D ffff8804f2ab2350 0 6378 2 0x00000000 May 19 17:41:28 bump kernel: [671350.880050] ffff8804f2ab2010 0000000000000046 0000000000014280 0000000000014280 May 19 17:41:28 bump kernel: [671350.880051] ffff880725423fd8 ffff8804f2ab2010 ffff8805de3bba40 ffff8807f8410000 May 19 17:41:28 bump kernel: [671350.880060] ffffffffa0866790 0000000000000000 0000000000000000 0000000000000000 May 19 17:41:28 bump kernel: [671350.880062] Call Trace: May 19 17:41:28 bump kernel: [671350.880069] [<ffffffffa0866790>] ? write_dirty_finish+0x210/0x210 [bcache] May 19 17:41:28 bump kernel: [671350.880073] [<ffffffff8107bb2d>] ? kthread+0x9d/0xe0 May 19 17:41:28 bump kernel: [671350.880074] [<ffffffff8107ba90>] ? kthread_create_on_node+0x180/0x180 May 19 17:41:28 bump kernel: [671350.880078] [<ffffffff814aeacc>] ? ret_from_fork+0x7c/0xb0 May 19 17:41:28 bump kernel: [671350.880079] [<ffffffff8107ba90>] ? kthread_create_on_node+0x180/0x180 -- 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
