[Lustre] Resource temporarily unavailable

Infiniband switch 장애 시 아래와 같은 메시지와 함께 마운팅이 되지 않았음

# lfs check servers
ngs_BiO-MDT0000-mdc-ffff810869cf7400: check error: Resource temporarily unavailable
ngs_BiO-OST0000-osc-ffff810869cf7400: check error: Resource temporarily unavailable
ngs_BiO-OST0001-osc-ffff810869cf7400: check error: Resource temporarily unavailable
ngs_BiO-OST0002-osc-ffff810869cf7400: check error: Resource temporarily unavailable
ngs_BiO-OST0003-osc-ffff810869cf7400: check error: Resource temporarily unavailable
ngs_BiO-OST0004-osc-ffff810869cf7400: check error: Resource temporarily unavailable
ngs_BiO-OST0005-osc-ffff810869cf7400: check error: Resource temporarily unavailable

 

oss # dmesg

rejecting I/O to dead device

..