linux在线添加硬盘、扫盘

1：查看scsi 硬盘设备
[root@web02 ~]# ls /sys/class/scsi_host
host0 host1 host2

2：检查本机现有硬盘
[root@web02 ~]# fdisk /dev/sda
sda sda1 sda2 sda3

3：刷新scsi驱动器
[root@web02 ~]# echo "- - -" > /sys/class/scsi_host/host0/scan
[root@web02 ~]# echo "- - -" > /sys/class/scsi_host/host1/scan
[root@web02 ~]# echo "- - -" > /sys/class/scsi_host/host2/scan
[root@web02 ~]# fdisk /dev/sd
sda sda1 sda2 sda3 sdb sdc
[root@web02 ~]# fdisk /dev/sd^C
[root@web02 ~]# fdisk -l

Disk /dev/sda: 53.7 GB,  bytes
 heads,  sectors/track,  cylinders
Units = cylinders of  *  =  bytes
Sector size (logical/physical):  bytes /  bytes
I/O size (minimum/optimal):  bytes /  bytes
Disk identifier: 0x0007f7e4

Device Boot Start End Blocks Id System
/dev/sda1 *     Linux
Partition  does not end on cylinder boundary.
/dev/sda2     Linux
/dev/sda3     Linux swap / Solaris

Disk /dev/sdb: 10.7 GB,  bytes
 heads,  sectors/track,  cylinders
Units = cylinders of  *  =  bytes
Sector size (logical/physical):  bytes /  bytes
I/O size (minimum/optimal):  bytes /  bytes
Disk identifier: 0x00000000

Disk /dev/sdc: 10.7 GB,  bytes
 heads,  sectors/track,  cylinders
Units = cylinders of  *  =  bytes
Sector size (logical/physical):  bytes /  bytes
I/O size (minimum/optimal):  bytes /  bytes
Disk identifier: 0x00000000

[root@web02 ~]#