BTW I tried again today after updating to latest DRBD bits in the ppa repo and
still seeing the same problem.
<snip>
root@elysium-test01:~# drbd-overview
0:.drbdctrl/0 Connected(2*) Secondary(2*) UpToDa/UpToDa
1:.drbdctrl/1 Connected(2*) Secondary(2*) UpToDa/UpToDa
100:data01/0 Connected(2*) Secondary(2*) UpToDa/UpToDa
root@elysium-test01:~# mount -o discard,defaults /dev/drbd100 /mnt/disks/data01
root@elysium-test01:~# drbd-overview
0:.drbdctrl/0 Connected(2*) Secondary(2*) UpToDa/UpToDa
1:.drbdctrl/1 Connected(2*) Secondary(2*) UpToDa/UpToDa
100:data01/0 Connected(2*) Primar/Second UpToDa/UpToDa /mnt/disks/data01
ext4 83G 60M 79G 1%
</snip>
Then a second or so later on the second node:
<snip>
Jul 15 17:52:33 elysium-test02 kernel: [ 221.275172] drbd data01
elysium-test01: Preparing remote state change 3047474975 (primary_nodes=0,
weak_nodes=0)
Jul 15 17:52:33 elysium-test02 kernel: [ 221.276435] drbd data01
elysium-test01: Committing remote state change 3047474975
Jul 15 17:52:33 elysium-test02 kernel: [ 221.276451] drbd data01
elysium-test01: peer( Secondary -> Primary )
Jul 15 17:52:33 elysium-test02 kernel: [ 221.291707] drbd data01/0 drbd100
elysium-test01: received new current UUID: 9032C1469604AE0B
Jul 15 17:52:35 elysium-test02 kernel: [ 222.650019] BUG: unable to handle
kernel NULL pointer dereference at (null)
Jul 15 17:52:35 elysium-test02 kernel: [ 222.658340] IP: [<ffffffff813ff18d>]
memcpy_orig+0x9d/0x110
Jul 15 17:52:35 elysium-test02 kernel: [ 222.664197] PGD ba137067 PUD ba136067
PMD 0
Jul 15 17:52:35 elysium-test02 kernel: [ 222.668930] Oops: 0002 [#1] SMP
Jul 15 17:52:35 elysium-test02 kernel: [ 222.672650] Modules linked in:
drbd_transport_tcp(OE) drbd(OE) ppdev ip6table_filter ip6_tables iptable_filter
ip_tables x_tables serio_raw parport_pc parport pvpanic ib_iser rdma_cm iw_cm
ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi
scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov
async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0
multipath linear crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw
gf128mul glue_helper ablk_helper cryptd psmouse virtio_scsi
Jul 15 17:52:35 elysium-test02 kernel: [ 222.726524] CPU: 0 PID: 2244 Comm:
drbd_r_data01 Tainted: G OE 4.4.0-31-generic #50-Ubuntu
Jul 15 17:52:35 elysium-test02 kernel: [ 222.735933] Hardware name: Google
Google/Google, BIOS Google 01/01/2011
Jul 15 17:52:35 elysium-test02 kernel: [ 222.742650] task: ffff880037639b80
ti: ffff8800afffc000 task.ti: ffff8800afffc000
Jul 15 17:52:35 elysium-test02 kernel: [ 222.750244] RIP:
0010:[<ffffffff813ff18d>] [<ffffffff813ff18d>] memcpy_orig+0x9d/0x110
Jul 15 17:52:35 elysium-test02 kernel: [ 222.758769] RSP:
0018:ffff8800affff9a8 EFLAGS: 00010202
Jul 15 17:52:35 elysium-test02 kernel: [ 222.764652] RAX: 0000000000000000
RBX: 0000000000000012 RCX: 0000000000000210
Jul 15 17:52:35 elysium-test02 kernel: [ 222.771889] RDX: 0000000000000012
RSI: ffff88003719a8ae RDI: 0000000000000000
Jul 15 17:52:35 elysium-test02 kernel: [ 222.779124] RBP: ffff8800affff9e0
R08: 0000000000000000 R09: 0000000000000000
Jul 15 17:52:35 elysium-test02 kernel: [ 222.786458] R10: 0000000000000000
R11: 0000000000000000 R12: ffff8800affffbb0
Jul 15 17:52:35 elysium-test02 kernel: [ 222.793820] R13: 0000000000000012
R14: 0000000000000012 R15: ffff8800affffb90
Jul 15 17:52:35 elysium-test02 kernel: [ 222.801189] FS:
0000000000000000(0000) GS:ffff88012fc00000(0000) knlGS:0000000000000000
Jul 15 17:52:35 elysium-test02 kernel: [ 222.809529] CS: 0010 DS: 0000 ES:
0000 CR0: 0000000080050033
Jul 15 17:52:35 elysium-test02 kernel: [ 222.815376] CR2: 0000000000000000
CR3: 00000000ba130000 CR4: 00000000001406f0
Jul 15 17:52:35 elysium-test02 kernel: [ 222.822636] Stack:
Jul 15 17:52:35 elysium-test02 kernel: [ 222.824788] ffffffff81403db6
ffff88003719a8c0 0000000000000210 000000000000003e
Jul 15 17:52:35 elysium-test02 kernel: [ 222.832781] 0000000000000012
0000000000000012 000000000000002c ffff8800affffa40
Jul 15 17:52:35 elysium-test02 kernel: [ 222.840779] ffffffff81715488
0000000000000000 ffff8800ba033480 0000000000000002
Jul 15 17:52:35 elysium-test02 kernel: [ 222.848761] Call Trace:
Jul 15 17:52:35 elysium-test02 kernel: [ 222.851320] [<ffffffff81403db6>] ?
copy_to_iter+0x1b6/0x260
Jul 15 17:52:35 elysium-test02 kernel: [ 222.857101] [<ffffffff81715488>]
skb_copy_datagram_iter+0x68/0x280
Jul 15 17:52:35 elysium-test02 kernel: [ 222.863649] [<ffffffff8176f953>]
tcp_recvmsg+0x613/0xbe0
Jul 15 17:52:35 elysium-test02 kernel: [ 222.869288] [<ffffffff8179d87e>]
inet_recvmsg+0x7e/0xb0
Jul 15 17:52:35 elysium-test02 kernel: [ 222.874709] [<ffffffff81705eab>]
sock_recvmsg+0x3b/0x50
Jul 15 17:52:35 elysium-test02 kernel: [ 222.880235] [<ffffffff81706001>]
kernel_recvmsg+0x61/0x80
Jul 15 17:52:35 elysium-test02 kernel: [ 222.885935] [<ffffffffc02e6703>]
dtt_recv_short+0x63/0x80 [drbd_transport_tcp]
Jul 15 17:52:35 elysium-test02 kernel: [ 222.893359] [<ffffffffc02e67e0>]
dtt_recv+0xc0/0x180 [drbd_transport_tcp]
Jul 15 17:52:35 elysium-test02 kernel: [ 222.900385] [<ffffffffc033b5c8>]
drbd_recv+0x48/0x1f0 [drbd]
Jul 15 17:52:35 elysium-test02 kernel: [ 222.906353] [<ffffffff81705eab>] ?
sock_recvmsg+0x3b/0x50
Jul 15 17:52:35 elysium-test02 kernel: [ 222.911974] [<ffffffffc0344878>]
read_in_block+0xa8/0x3b0 [drbd]
Jul 15 17:52:35 elysium-test02 kernel: [ 222.918186] [<ffffffffc0346f00>] ?
e_end_resync_block+0x130/0x130 [drbd]
Jul 15 17:52:35 elysium-test02 kernel: [ 222.925096] [<ffffffffc0347010>]
receive_Data+0x110/0xcc0 [drbd]
Jul 15 17:52:35 elysium-test02 kernel: [ 222.931326] [<ffffffffc02e6803>] ?
dtt_recv+0xe3/0x180 [drbd_transport_tcp]
Jul 15 17:52:35 elysium-test02 kernel: [ 222.938496] [<ffffffffc033b5c8>] ?
drbd_recv+0x48/0x1f0 [drbd]
Jul 15 17:52:35 elysium-test02 kernel: [ 222.944533] [<ffffffffc0346f00>] ?
e_end_resync_block+0x130/0x130 [drbd]
Jul 15 17:52:35 elysium-test02 kernel: [ 222.951614] [<ffffffffc0346f00>] ?
e_end_resync_block+0x130/0x130 [drbd]
Jul 15 17:52:35 elysium-test02 kernel: [ 222.958762] [<ffffffffc034bd26>]
drbd_receiver+0x3e6/0x620 [drbd]
Jul 15 17:52:35 elysium-test02 kernel: [ 222.965069] [<ffffffffc03563c0>] ?
idr_has_entry+0x10/0x10 [drbd]
Jul 15 17:52:35 elysium-test02 kernel: [ 222.971368] [<ffffffffc035641e>]
drbd_thread_setup+0x5e/0x110 [drbd]
Jul 15 17:52:35 elysium-test02 kernel: [ 222.977943] [<ffffffffc03563c0>] ?
idr_has_entry+0x10/0x10 [drbd]
Jul 15 17:52:35 elysium-test02 kernel: [ 222.984244] [<ffffffff810a0808>]
kthread+0xd8/0xf0
Jul 15 17:52:35 elysium-test02 kernel: [ 222.989235] [<ffffffff810a0730>] ?
kthread_create_on_node+0x1e0/0x1e0
Jul 15 17:52:35 elysium-test02 kernel: [ 222.996225] [<ffffffff8182decf>]
ret_from_fork+0x3f/0x70
Jul 15 17:52:35 elysium-test02 kernel: [ 223.001744] [<ffffffff810a0730>] ?
kthread_create_on_node+0x1e0/0x1e0
Jul 15 17:52:35 elysium-test02 kernel: [ 223.008380] Code: 57 e8 4c 89 5f e0
48 8d 7f e0 73 d2 83 c2 20 48 29 d6 48 29 d7 83 fa 10 72 24 4c 8b 06 4c 8b 4e
08 4c 8b 54 16 f0 4c 8b 5c 16 f8 <4c> 89 07 4c 89 4f 08 4c 89 54 17 f0 4c 89 5c
17 f8 c3 90 83 fa
Jul 15 17:52:35 elysium-test02 kernel: [ 223.035611] RIP [<ffffffff813ff18d>]
memcpy_orig+0x9d/0x110
Jul 15 17:52:35 elysium-test02 kernel: [ 223.041512] RSP <ffff8800affff9a8>
Jul 15 17:52:35 elysium-test02 kernel: [ 223.045112] CR2: 0000000000000000
Jul 15 17:52:35 elysium-test02 kernel: [ 223.048566] ---[ end trace
076e40e204e41f38 ]---
</snip>
Anyone have any idea whats going on and/or how to fix this?
Thanks!
—jason
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