故障:
带库驱动器,定期自动DOWN,查看/var/log/message日志,Unable to open HP.ULTRIUM4-SCSI.000 (device 0, /dev/nst0) thru sg driver, Cannot allocate memory, DOWN'ing it
解决方案:修改内核参数,如下
[root@nbumaster ~]# sysctl vm.zone_reclaim_mode
vm.zone_reclaim_mode = 0
[root@nbumaster ~]# sysctl -w vm.zone_reclaim_mode=1
vm.zone_reclaim_mode = 1
[root@nbumaster ~]# sysctl -p
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