linux 添加硬盘如何不重启

1. 添加了磁盘后查看，没有刷新出来

 

[root@node /]# fdisk -l

 

Disk /dev/sda: 17.2 GB, 17179869184 bytes

255 heads, 63 sectors/track, 2088 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x000aa84a

 

   Device Boot Start End Blocks Id System

/dev/sda1 * 1 2089 16775168 83 Linux

/dev/sda2 2089 2089 1024 82 Linux swap / Solaris

 

 

2. 查看主机总线号

 

 

root@node /]# ls /sys/class/scsi_host/

host0 host1 host2

 

3.重新扫描SCSI总线来添加设备

 

echo "- - -" > /sys/class/scsi_host/host0/scan

echo "- - -" > /sys/class/scsi_host/host1/scan

echo "- - -" > /sys/class/scsi_host/host2/scan

 

4. 查看磁盘，可以看到 /dev/sdb :53.7G 这个就是新加的盘

 

 

[root@node /]# fdisk -l

 

Disk /dev/sda: 17.2 GB, 17179869184 bytes

255 heads, 63 sectors/track, 2088 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x000aa84a

 

   Device Boot Start End Blocks Id System

/dev/sda1 * 1 2089 16775168 83 Linux

/dev/sda2 2089 2089 1024 82 Linux swap / Solaris

 

Disk /dev/sdb: 53.7 GB, 53687091200 bytes

255 heads, 63 sectors/track, 6527 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

 

 

 

原文：https://blog.csdn.net/zhengwei125/article/details/53928061