Hi Aurélien, The VMs become completely unresponsive, so we can't run commands in a separate shell. I've included a stack trace below. I'm considering trying the cache=loose mount option. Cheers, James Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.616360] INFO: task dockerd:786 blocked for more than 120 seconds. Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.621073] Not tainted 5.0.0-25-generic #26~18.04.1-Ubuntu Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.625436] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629464] dockerd D 0 786 1 0x00000000 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629467] Call Trace: Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629477] __schedule+0x2bd/0x850 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629482] ? __switch_to_asm+0x35/0x70 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629484] schedule+0x2c/0x70 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629485] schedule_preempt_disabled+0xe/0x10 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629487] __mutex_lock.isra.9+0x183/0x4e0 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629488] ? schedule_timeout+0x171/0x360 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629490] __mutex_lock_slowpath+0x13/0x20 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629491] ? __mutex_lock_slowpath+0x13/0x20 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629492] mutex_lock+0x2f/0x40 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629528] smb2_reconnect+0x106/0x7f0 [cifs] Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629531] ? __switch_to+0x123/0x4e0 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629533] ? __switch_to_asm+0x35/0x70 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629537] ? __switch_to_asm+0x41/0x70 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629540] ? wait_woken+0x80/0x80 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629556] smb2_plain_req_init+0x34/0x270 [cifs] Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629577] SMB2_open_init+0x6d/0x730 [cifs] Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629595] SMB2_open+0x148/0x4f0 [cifs] Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629609] ? SMB2_open+0x148/0x4f0 [cifs] Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629624] open_shroot+0x16c/0x210 [cifs] Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629637] ? open_shroot+0x16c/0x210 [cifs] Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629654] smb2_query_path_info+0x11c/0x1b0 [cifs] Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629656] ? _cond_resched+0x19/0x40 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629660] ? kmem_cache_alloc_trace+0x151/0x1c0 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629673] cifs_get_inode_info+0x3e3/0xb70 [cifs] Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629685] ? build_path_from_dentry_optional_prefix+0x103/0x430 [cifs] Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629699] cifs_revalidate_dentry_attr+0xe9/0x3d0 [cifs] Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629712] cifs_getattr+0x5d/0x1a0 [cifs] Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629715] ? common_perm_cond+0x4c/0x70 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629719] vfs_getattr_nosec+0x73/0x90 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629720] vfs_getattr+0x36/0x40 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629721] vfs_statx+0x8d/0xe0 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629723] __do_sys_newlstat+0x3d/0x70 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629725] __x64_sys_newlstat+0x16/0x20 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629729] do_syscall_64+0x5a/0x120 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629731] entry_SYSCALL_64_after_hwframe+0x44/0xa9 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629734] RIP: 0033:0x55fd5a4b1e40 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629739] Code: Bad RIP value. Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629741] RSP: 002b:000000c421af6948 EFLAGS: 00000212 ORIG_RAX: 0000000000000006 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629742] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000055fd5a4b1e40 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629743] RDX: 0000000000000000 RSI: 000000c421491488 RDI: 000000c4227a4060 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629743] RBP: 000000c421af69b0 R08: 0000000000000000 R09: 0000000000000000 Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629744] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff Sep 4 13:36:36 prod-worker-1a kernel: [ 3384.629745] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000055
