如何模拟拔盘操作
这个对测试和运维drill run还是很有帮助的
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Linux has a nifty way of allowing disk state modification via /sys/ interface. Very useful when debugging LVM mirroring, disk disaster recovery etc.
To put a SATA disk offline/running:
echo offline > /sys/block/sda/device/state
echo running > /sys/block/sda/device/state
To delete a device (for unplugging):
echo 1 > /sys/block/sda/device/delete
To scan for new devices (hotplugging):echo "0 0 0" >/sys/class/scsi_host/host/scan
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