We're running a openstack deployment using kolla-ansible on machines with btrfs filesystems.
kolla-ansible deploys everything as docker images, which in turn uses btrfs subvolumes and does some heavy-magic^tm Anyway, a while ago, we restarted one docker instance on four machines, as you do - pretty common, but this caused a kernel panic on all four machines.... I'm wondering if there is a known bug in btrfs, that we might have hit? especially since the kernel panic is truncated... =/ Screenshot: https://goo.gl/photos/zJzLV7QruNqMFKRBA OCR:ed and fixed up trace: [4492428.611565] do_syscall_64+0x67/0x180 [4492428.611713] entry_SYSCALL64_slow_path+0x25/0x25 [4492428.611860] RIP: 0033:0x6ba79a [4492428.612005] RSP: 002b:000000c421cc0ac0 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [4492428.612292] RAX: ffffffffffffffda RBX: 000000c42001550c RCX: 00000000006ba79a [4492428.612576] RDX: 000000c4214e6a40 RSI: 000000c4216a67e0 RDI: 000000c4214e6a38 [4492428.612862] RBP: 000000c421cc0b70 R08: 000000c4226597c0 RB9: 0000000000000000 [4492428.613146] R10: 000000000000000e R11: 0000000000000206 R12: 0000000000000a40 [4492428.613435] R13: 00000000000000af R14: 000000000000001f R15: 0000000000000004 [4492428.613723] Code: ee cb f4 00 48 8b 3d ef cb f4 00 48 39 fa 48 8b 72 10 0f 84 69 01 00 00 48 3b 86 d8 00 00 00 74 24 48 8b 92 d8 00 00 00 48 39 d7 <48> 8b 72 10 0f 84 40 01 00 00 48 3b 86 d8 00 00 00 75 e3 48 B9 [4492428.614213] RIP: propagate_one+0xa1/0x200 RSP: ffffc9002eac3d78 [4492428.614363] CR2: 0000000000000010 [4492428.614881] ---[ end trace ce6357ccc7c57710 I--- [4492428.615067] Kernel panic - not syncing: Fatal exception [4492428.615286] Kernel 0ffset: disabled [4492428.615478] ---[ end Kernel panic - not syncing: Fatal exception --- the propagate_one bit makes me think it could be filesystem related - so, that's why i'm asking =)
[4492428.611565] do_syscall_64+0x67/0x180 [4492428.611713] entry_SYSCALL64_slow_path+0x25/0x25 [4492428.611860] RIP: 0033:0x6ba79a [4492428.612005] RSP: 002b:000000c421cc0ac0 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [4492428.612292] RAX: ffffffffffffffda RBX: 000000c42001550c RCX: 00000000006ba79a [4492428.612576] RDX: 000000c4214e6a40 RSI: 000000c4216a67e0 RDI: 000000c4214e6a38 [4492428.612862] RBP: 000000c421cc0b70 R08: 000000c4226597c0 RB9: 0000000000000000 [4492428.613146] R10: 000000000000000e R11: 0000000000000206 R12: 0000000000000a40 [4492428.613435] R13: 00000000000000af R14: 000000000000001f R15: 0000000000000004 [4492428.613723] Code: ee cb f4 00 48 8b 3d ef cb f4 00 48 39 fa 48 8b 72 10 0f 84 69 01 00 00 48 3b 86 d8 00 00 00 74 24 48 8b 92 d8 00 00 00 48 39 d7 <48> 8b 72 10 0f 84 40 01 00 00 48 3b 86 d8 00 00 00 75 e3 48 B9 [4492428.614213] RIP: propagate_one+0xa1/0x200 RSP: ffffc9002eac3d78 [4492428.614363] CR2: 0000000000000010 [4492428.614881] ---[ end trace ce6357ccc7c57710 I--- [4492428.615067] Kernel panic - not syncing: Fatal exception [4492428.615286] Kernel 0ffset: disabled [4492428.615478] ---[ end Kernel panic - not syncing: Fatal exception
