如何优雅的拔掉 /dev/sdl？
#lsscsi
[6:0:0:0] disk ATA ST2000NM0011 SN02 /dev/sda
[6:0:1:0] disk ATA ST2000NM0011 SN02 /dev/sdb
[6:0:2:0] disk ATA ST2000NM0011 SN02 /dev/sdc
[6:0:3:0] disk ATA ST2000NM0011 SN02 /dev/sdd
[6:0:4:0] disk ATA ST2000NM0011 SN02 /dev/sde
[6:0:5:0] disk ATA ST2000NM0011 SN02 /dev/sdf
[6:0:6:0] disk ATA ST2000NM0011 SN02 /dev/sdg
[6:0:7:0] disk ATA ST2000NM0011 SN02 /dev/sdh
[6:0:8:0] disk ATA ST2000NM0011 SN02 /dev/sdi
[6:0:9:0] disk ATA ST2000NM0011 SN02 /dev/sdj
[6:0:10:0] disk ATA ST2000NM0011 SN02 /dev/sdk
[6:0:11:0] disk ATA ST2000NM0011 SN02 /dev/sdl
[6:0:12:0] enclosu SAS/SATA Expander RevA -
#echo "scsi remove-single-device 6 0 11 0" > /proc/scsi/scsi
然后插上：
#echo "scsi add-single-device 6 0 11 0" > /proc/scsi/scsi