[19827.250737] WARNING: MMP writes to pool 'lustre-ost6' have not succeeded in over 60s; suspending pool
[19827.252472] Kernel panic - not syncing: Pool 'lustre-ost6' has encountered an uncorrectable I/O failure and the failure mode property for this pool is set to panic.
[19827.254913] CPU: 1 PID: 10177 Comm: mmp Kdump: loaded Tainted: P OE ------------ 3.10.0-957.12.2.el7_lustre.x86_64 #1
[19827.256880] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
[19827.257837] Call Trace:
[19827.258340] [] dump_stack+0x19/0x1b
[19827.259223] [] panic+0xe8/0x21f
[19827.260306] [] zio_suspend+0x116/0x120 [zfs]
[19827.261338] [] mmp_thread+0x41c/0x4c0 [zfs]
[19827.262380] [] ? mmp_write_done+0x140/0x140 [zfs]
[19827.263485] [] thread_generic_wrapper+0x73/0x80 [spl]
[19827.264611] [] ? __thread_exit+0x20/0x20 [spl]
[19827.265657] [] kthread+0xd1/0xe0
[19827.266492] [] ? insert_kthread_work+0x40/0x40
[19827.267531] [] ret_from_fork_nospec_begin+0x21/0x21
[19827.268644] [] ? insert_kthread_work+0x40/0x40