I'm trying bcache merged with linus' git head (-rc9). I suppose I should really try it with a
vanilla bcache-dev tree.
Anyway, I can register the cache and backing device but when I try and attach the cache set to the
backing device this happens :
Cache is /dev/sde. Backing device is /dev/md10 (4 disk RAID10)
[ 129.896180] bio: create slab <bio-2> at 2
[ 129.972092] bcache: journal replay done, 0 keys in 2 entries, seq 1-2
[ 157.704117] md: resync of RAID array md10
[ 157.704161] ------------[ cut here ]------------
[ 157.704168] kernel BUG at drivers/scsi/scsi_lib.c:1152!
[ 157.704174] invalid opcode: 0000 [#1] SMP
[ 157.704179] CPU 0
[ 157.704181] Modules linked in: nfs ipt_MASQUERADE xt_tcpudp iptable_filter iptable_nat nf_nat
nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables x_tables deflate zlib_deflate des_generic
cbc ecb crypto_blkcipher sha1_generic md5 hmac crypto_hash cryptomgr aead crypto_algapi af_key fuse
w83627ehf hwmon_vid netconsole configfs vhost_net powernow_k8 mperf kvm_amd kvm i2c_piix4 xhci_hcd
k10temp ohci_hcd ehci_hcd atl1c ahci libahci usbcore megaraid_sas [last unloaded: scsi_wait_scan]
[ 157.704233]
[ 157.704239] Pid: 1422, comm: md10_raid10 Not tainted 3.1.0-rc9-00143-g9468c19 #5 To Be Filled By
O.E.M. To Be Filled By O.E.M./890GX Extreme4 R2.0
[ 157.704249] RIP: 0010:[<ffffffff812a541e>] [<ffffffff812a541e>] scsi_setup_fs_cmnd+0xae/0xf0
[ 157.704263] RSP: 0018:ffff88041ba33be0 EFLAGS: 00010046
[ 157.704268] RAX: 0000000000000000 RBX: ffff88041bbe3428 RCX: 0000000000001000
[ 157.704273] RDX: 0000000000000000 RSI: ffff88041bbe3428 RDI: ffff88041d42b000
[ 157.704278] RBP: ffff88041d42b000 R08: 0000000000000000 R09: 0000000000000001
[ 157.704282] R10: a080000000000000 R11: dead000000100100 R12: ffff88041d42b000
[ 157.704287] R13: 000000000e9c3408 R14: ffff88041d42b048 R15: ffff88041c6a7400
[ 157.704293] FS: 00007fa45e67e700(0000) GS:ffff88042fc00000(0000) knlGS:0000000000000000
[ 157.704298] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 157.704305] CR2: 0000000000824008 CR3: 0000000407f12000 CR4: 00000000000006f0
[ 157.704309] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 157.704314] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 157.704320] Process md10_raid10 (pid: 1422, threadinfo ffff88041ba32000, task ffff88041c779880)
[ 157.704323] Stack:
[ 157.704326] 0000000000000000 ffff88041bbe3428 ffff88041b998000 ffffffff812aff1c
[ 157.704333] 01ff88041d42b800 ffff880400000001 ffff880400001000 0000000000000000
[ 157.704339] ffff88041bbe3428 ffff88041bbe3428 ffff88041bbe3428 ffff88041b998000
[ 157.704346] Call Trace:
[ 157.704356] [<ffffffff812aff1c>] ? sd_prep_fn+0x15c/0xa50
[ 157.704364] [<ffffffff811c29e4>] ? blk_peek_request+0xb4/0x1d0
[ 157.704371] [<ffffffff812a4940>] ? scsi_request_fn+0x50/0x4a0
[ 157.704377] [<ffffffff811c3398>] ? blk_flush_plug_list+0x188/0x210
[ 157.704384] [<ffffffff811c342b>] ? blk_finish_plug+0xb/0x30
[ 157.704392] [<ffffffff812f2688>] ? raid10d+0x908/0xb50
[ 157.704400] [<ffffffff813ffed5>] ? schedule_timeout+0x1c5/0x230
[ 157.704408] [<ffffffff81055e91>] ? sched_clock_cpu+0x61/0xf0
[ 157.704415] [<ffffffff8130649f>] ? md_thread+0x10f/0x140
[ 157.704423] [<ffffffff81050130>] ? wake_up_bit+0x40/0x40
[ 157.704430] [<ffffffff81306390>] ? md_register_thread+0x100/0x100
[ 157.704437] [<ffffffff81306390>] ? md_register_thread+0x100/0x100
[ 157.704443] [<ffffffff8104fcd6>] ? kthread+0x96/0xa0
[ 157.704452] [<ffffffff814030f4>] ? kernel_thread_helper+0x4/0x10
[ 157.704459] [<ffffffff8104fc40>] ? kthread_worker_fn+0x120/0x120
[ 157.704467] [<ffffffff814030f0>] ? gs_change+0xb/0xb
[ 157.704470] Code: 80 00 00 00 00 48 83 c4 08 5b 5d c3 90 48 89 ef be 20 00 00 00 e8 73 a2 ff ff
48 85 c0 48 89 c7 74 d7 48 89 83 d8 00 00 00 eb 8d <0f> 0b eb fe 48 8b 00 48 85 c0 0f 84 67 ff ff ff
48 8b 40 50 48
[ 157.704510] RIP [<ffffffff812a541e>] scsi_setup_fs_cmnd+0xae/0xf0
[ 157.704517] RSP <ffff88041ba33be0>
[ 157.704522] ---[ end trace 3cdc1163f94b6a24 ]---
[ 157.704526] Kernel panic - not syncing: Fatal exception
[ 157.704532] Pid: 1422, comm: md10_raid10 Tainted: G D 3.1.0-rc9-00143-g9468c19 #5
[ 157.704536] Call Trace:
[ 157.704542] [<ffffffff813feb89>] ? panic+0x92/0x193
[ 157.704549] [<ffffffff81035341>] ? kmsg_dump+0x41/0xf0
[ 157.704557] [<ffffffff8100504d>] ? oops_end+0x8d/0xa0
[ 157.704564] [<ffffffff81002e34>] ? do_invalid_op+0x84/0xa0
[ 157.704569] [<ffffffff812a541e>] ? scsi_setup_fs_cmnd+0xae/0xf0
[ 157.704577] [<ffffffff811d078e>] ? cfq_set_request+0x15e/0x3b0
[ 157.704584] [<ffffffff81402f75>] ? invalid_op+0x15/0x20
[ 157.704590] [<ffffffff812a541e>] ? scsi_setup_fs_cmnd+0xae/0xf0
[ 157.704598] [<ffffffff812aff1c>] ? sd_prep_fn+0x15c/0xa50
[ 157.704604] [<ffffffff811c29e4>] ? blk_peek_request+0xb4/0x1d0
[ 157.704609] [<ffffffff812a4940>] ? scsi_request_fn+0x50/0x4a0
[ 157.704615] [<ffffffff811c3398>] ? blk_flush_plug_list+0x188/0x210
[ 157.704622] [<ffffffff811c342b>] ? blk_finish_plug+0xb/0x30
[ 157.704628] [<ffffffff812f2688>] ? raid10d+0x908/0xb50
[ 157.704635] [<ffffffff813ffed5>] ? schedule_timeout+0x1c5/0x230
[ 157.704641] [<ffffffff81055e91>] ? sched_clock_cpu+0x61/0xf0
[ 157.704648] [<ffffffff8130649f>] ? md_thread+0x10f/0x140
[ 157.704655] [<ffffffff81050130>] ? wake_up_bit+0x40/0x40
[ 157.704661] [<ffffffff81306390>] ? md_register_thread+0x100/0x100
[ 157.704668] [<ffffffff81306390>] ? md_register_thread+0x100/0x100
[ 157.704675] [<ffffffff8104fcd6>] ? kthread+0x96/0xa0
[ 157.704682] [<ffffffff814030f4>] ? kernel_thread_helper+0x4/0x10
[ 157.704689] [<ffffffff8104fc40>] ? kthread_worker_fn+0x120/0x120
[ 157.704696] [<ffffffff814030f0>] ? gs_change+0xb/0xb
[ 157.707104] Rebooting in 10 seconds..
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