linux 添加硬盤如何不重啟


linux 添加硬盤如何不重啟
1. 添加了磁盤後查看，沒有刷新出來[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. 查看主機總線號 root@node /]# ls /sys/class/scsi_host/ host0  host1  host2
3.重新掃描SCSI總線來添加設備[root@node /]# echo "- - -" > /sys/class/scsi_host/host0/scan [root@node /]# echo "- - -" > /sys/class/scsi_host/host1/scan [root@node /]# echo "- - -" > /sys/class/scsi_host/host2/scan
4. 查看磁盤，可以看到 /dev/sdb :53.7G 這個就是新加的盤 [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