Hi, while running 3.10 or 3.18 kernel i've problems enabling discard. Strangely this only appears on reboot or crash. While these situations work fine without discard. bcache completely fails when discard is enabled for reboot or crash. Strangely it works fine while "running". After a reboot dmesg looks like this (for all 3 cache and all backing devices): bcache: prio_read() bad csum reading priorities bcache: prio_read() bad magic reading priorities bcache: prio_read() bad csum reading priorities bcache: prio_read() bad magic reading priorities bcache: prio_read() bad csum reading priorities bcache: prio_read() bad magic reading priorities WARNING: at drivers/md/bcache/alloc.c:79 bch_inc_gen+0x5f/0x70 [bcache]() Modules linked in: bcache sg sd_mod crc32_pclmul ghash_clmulni_intel isci(+) libsas ahci scsi_transport_sas libahci igb i2c_algo_bit i2c_core ixgbe(O) ptp pps_core CPU: 0 PID: 438 Comm: bcache-register Tainted: G O 3.18.1 #1 [<ffffffffa007305f>] bch_inc_gen+0x5f/0x70 [bcache] [<ffffffffa0073234>] __bch_invalidate_one_bucket+0x44/0xe0 [bcache] [<ffffffffa007ba06>] bch_initial_gc_finish+0xe6/0x190 [bcache] [<ffffffffa0093747>] ? bch_crc64+0x37/0x50 [bcache] [<ffffffffa008bb38>] run_cache_set+0x3c8/0x900 [bcache] [<ffffffffa008d517>] register_bcache+0xd37/0x13c0 [bcache] bcache: error on d85a7b6f-50cf-4293-8f20-cdd16d5d16e0: key too stale: 97, need_gc 128, disabling caching CPU: 1 PID: 438 Comm: bcache-register Tainted: G W O 3.18.1 #1 [<ffffffffa00805e5>] bch_extent_bad+0x1b5/0x1c0 [bcache] [<ffffffffa0074c2a>] bch_ptr_bad+0xa/0x10 [bcache] [<ffffffffa00750e1>] btree_mergesort+0x2d1/0x560 [bcache] [<ffffffffa0074c20>] ? bch_ptr_invalid+0x10/0x10 [bcache] [<ffffffffa007571e>] ? bch_bset_init_next+0x8e/0xf0 [bcache] [<ffffffffa007712c>] ? bch_btree_iter_init+0x7c/0xc0 [bcache] [<ffffffffa0077705>] bch_btree_sort_into+0x55/0x80 [bcache] [<ffffffffa007b421>] btree_node_alloc_replacement+0x81/0xc0 [bcache] [<ffffffffa007bd1c>] btree_split+0xbc/0x6d0 [bcache] [<ffffffffa007c5ea>] bch_btree_insert_node+0x2ba/0x3a0 [bcache] [<ffffffffa007c6d0>] ? bch_btree_insert_node+0x3a0/0x3a0 [bcache] [<ffffffffa007c6f8>] btree_insert_fn+0x28/0x50 [bcache] [<ffffffffa007b098>] bch_btree_map_nodes_recurse+0x38/0x160 [bcache] [<ffffffffa00762b7>] ? __bch_bset_search+0x187/0x4a0 [bcache] [<ffffffffa0080372>] ? bch_btree_ptr_invalid+0x12/0x20 [bcache] [<ffffffffa007acb8>] ? bch_btree_node_get+0x78/0x290 [bcache] [<ffffffffa007c6d0>] ? bch_btree_insert_node+0x3a0/0x3a0 [bcache] [<ffffffffa007b133>] bch_btree_map_nodes_recurse+0xd3/0x160 [bcache] [<ffffffffa007ddf4>] __bch_btree_map_nodes+0x104/0x120 [bcache] [<ffffffffa007c6d0>] ? bch_btree_insert_node+0x3a0/0x3a0 [bcache] [<ffffffffa007def1>] bch_btree_insert+0xe1/0x150 [bcache] [<ffffffffa008264a>] bch_journal_replay+0x12a/0x250 [bcache] [<ffffffffa0093747>] ? bch_crc64+0x37/0x50 [bcache] [<ffffffffa008bcdf>] run_cache_set+0x56f/0x900 [bcache] [<ffffffffa008d517>] register_bcache+0xd37/0x13c0 [bcache] bcache: bch_journal_replay() journal replay done, 4390 keys in 57 entries, seq 2406219 bcache: register_cache() registered cache device sda5 bcache: prio_read() bad csum reading priorities bcache: prio_read() bad magic reading priorities bcache: prio_read() bad csum reading priorities bcache: prio_read() bad magic reading priorities bcache: prio_read() bad csum reading priorities bcache: prio_read() bad magic reading priorities bcache: error on 157e5dc9-4017-410b-b1f6-450385345128: key too stale: 107, need_gc 128, disabling caching CPU: 1 PID: 447 Comm: bcache-register Tainted: G W O 3.18.1 #1 [<ffffffffa00805e5>] bch_extent_bad+0x1b5/0x1c0 [bcache] [<ffffffffa0074c2a>] bch_ptr_bad+0xa/0x10 [bcache] [<ffffffffa00750e1>] btree_mergesort+0x2d1/0x560 [bcache] [<ffffffffa0074c20>] ? bch_ptr_invalid+0x10/0x10 [bcache] [<ffffffffa007571e>] ? bch_bset_init_next+0x8e/0xf0 [bcache] [<ffffffffa007712c>] ? bch_btree_iter_init+0x7c/0xc0 [bcache] [<ffffffffa0077705>] bch_btree_sort_into+0x55/0x80 [bcache] [<ffffffffa007b421>] btree_node_alloc_replacement+0x81/0xc0 [bcache] [<ffffffffa007bd1c>] btree_split+0xbc/0x6d0 [bcache] [<ffffffffa007c5ea>] bch_btree_insert_node+0x2ba/0x3a0 [bcache] [<ffffffffa007c6d0>] ? bch_btree_insert_node+0x3a0/0x3a0 [bcache] [<ffffffffa007c6f8>] btree_insert_fn+0x28/0x50 [bcache] [<ffffffffa007b098>] bch_btree_map_nodes_recurse+0x38/0x160 [bcache] [<ffffffffa00762b7>] ? __bch_bset_search+0x187/0x4a0 [bcache] [<ffffffffa0080372>] ? bch_btree_ptr_invalid+0x12/0x20 [bcache] [<ffffffffa007acb8>] ? bch_btree_node_get+0x78/0x290 [bcache] [<ffffffffa007c6d0>] ? bch_btree_insert_node+0x3a0/0x3a0 [bcache] [<ffffffffa007b133>] bch_btree_map_nodes_recurse+0xd3/0x160 [bcache] [<ffffffffa007ddf4>] __bch_btree_map_nodes+0x104/0x120 [bcache] [<ffffffffa007c6d0>] ? bch_btree_insert_node+0x3a0/0x3a0 [bcache] [<ffffffffa007def1>] bch_btree_insert+0xe1/0x150 [bcache] [<ffffffffa008264a>] bch_journal_replay+0x12a/0x250 [bcache] [<ffffffffa009374f>] ? bch_crc64+0x3f/0x50 [bcache] [<ffffffffa008bcdf>] run_cache_set+0x56f/0x900 [bcache] [<ffffffffa008d517>] register_bcache+0xd37/0x13c0 [bcache] bcache: bch_journal_replay() journal replay done, 4355 keys in 56 entries, seq 435045 bcache: register_cache() registered cache device sdb3 bcache: register_bdev() registered backing device sdd1 bcache: bch_cached_dev_attach() Can't attach sdd1: shutting down bcache: register_bdev() registered backing device sdc1 bcache: register_bdev() registered backing device sde1 bcache: bch_cached_dev_attach() Can't attach sde1: shutting down bcache: cache_set_free() Cache set d85a7b6f-50cf-4293-8f20-cdd16d5d16e0 unregistered bcache: prio_read() bad csum reading priorities bcache: prio_read() bad magic reading priorities bcache: error on b755d45b-9fa1-490f-9eca-6b739618aaf1: accessing priorities, disabling caching bcache: prio_read() bad csum reading priorities bcache: prio_read() bad magic reading priorities bcache: prio_read() bad csum reading priorities bcache: prio_read() bad magic reading priorities bcache: register_cache() registered cache device sdi5 bcache: cache_set_free() Cache set b755d45b-9fa1-490f-9eca-6b739618aaf1 unregistered bcache: register_bdev() registered backing device sdf1 bcache: register_bdev() registered backing device sdh1 bcache: bch_cached_dev_attach() Can't attach sdh1: shutting down bcache: register_bdev() registered backing device sdg1 bcache: bch_cached_dev_attach() Can't attach sdg1: shutting down bcache: error on d85a7b6f-50cf-4293-8f20-cdd16d5d16e0: key too stale: 105, need_gc 128, disabling caching CPU: 1 PID: 1184 Comm: bcache-register Tainted: G W O 3.18.1 #1 [<ffffffffa00805e5>] bch_extent_bad+0x1b5/0x1c0 [bcache] [<ffffffffa0074c2a>] bch_ptr_bad+0xa/0x10 [bcache] [<ffffffffa00750e1>] btree_mergesort+0x2d1/0x560 [bcache] [<ffffffffa0074c20>] ? bch_ptr_invalid+0x10/0x10 [bcache] [<ffffffffa007571e>] ? bch_bset_init_next+0x8e/0xf0 [bcache] [<ffffffffa007712c>] ? bch_btree_iter_init+0x7c/0xc0 [bcache] [<ffffffffa0077705>] bch_btree_sort_into+0x55/0x80 [bcache] [<ffffffffa007b421>] btree_node_alloc_replacement+0x81/0xc0 [bcache] [<ffffffffa007bd1c>] btree_split+0xbc/0x6d0 [bcache] [<ffffffffa007c5ea>] bch_btree_insert_node+0x2ba/0x3a0 [bcache] [<ffffffffa007c6d0>] ? bch_btree_insert_node+0x3a0/0x3a0 [bcache] [<ffffffffa007c6f8>] btree_insert_fn+0x28/0x50 [bcache] [<ffffffffa007b098>] bch_btree_map_nodes_recurse+0x38/0x160 [bcache] [<ffffffffa00762b7>] ? __bch_bset_search+0x187/0x4a0 [bcache] [<ffffffffa0080372>] ? bch_btree_ptr_invalid+0x12/0x20 [bcache] [<ffffffffa007acb8>] ? bch_btree_node_get+0x78/0x290 [bcache] [<ffffffffa007c6d0>] ? bch_btree_insert_node+0x3a0/0x3a0 [bcache] [<ffffffffa007b133>] bch_btree_map_nodes_recurse+0xd3/0x160 [bcache] [<ffffffffa007ddf4>] __bch_btree_map_nodes+0x104/0x120 [bcache] [<ffffffffa007c6d0>] ? bch_btree_insert_node+0x3a0/0x3a0 [bcache] [<ffffffffa007def1>] bch_btree_insert+0xe1/0x150 [bcache] [<ffffffffa008264a>] bch_journal_replay+0x12a/0x250 [bcache] [<ffffffffa008bcdf>] run_cache_set+0x56f/0x900 [bcache] [<ffffffffa008d517>] register_bcache+0xd37/0x13c0 [bcache] bcache: bch_journal_replay() journal replay done, 4390 keys in 58 entries, seq 2406220 bcache: bch_cached_dev_attach() Can't attach sde1: shutting down bcache: bch_cached_dev_attach() Can't attach sdd1: shutting down bcache: register_cache() registered cache device sda5 bcache: prio_read() bad csum reading priorities bcache: prio_read() bad magic reading priorities bcache: error on b755d45b-9fa1-490f-9eca-6b739618aaf1: accessing priorities, disabling caching bcache: prio_read() bad csum reading priorities bcache: prio_read() bad magic reading priorities bcache: prio_read() bad csum reading priorities bcache: prio_read() bad magic reading priorities bcache: register_cache() registered cache device sdi5 bcache: cache_set_free() Cache set b755d45b-9fa1-490f-9eca-6b739618aaf1 unregistered bcache: cache_set_free() Cache set d85a7b6f-50cf-4293-8f20-cdd16d5d16e0 unregistered bcache: cache_set_free() Cache set 157e5dc9-4017-410b-b1f6-450385345128 unregistered Stefan -- 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
