ll /sys/class/scsi_host/ root@data01 ~]# ll /sys/class/scsi_host/ ls: cannot access ls: No such file or directory /sys/class/scsi_host/: total 0 lrwxrwxrwx 1 root root 0 Mar 23 10:49 host0 -> …/…/devices/pci0000:00/0000:00:07.1/ata1/host0/scsi_host/host0 lrwxrwxrwx 1 root root 0 Mar 23 10:49 host1 -> …/…/devices/pci0000:00/0000:00:07.1/ata2/host1/scsi_host/host1 lrwxrwxrwx 1 root root 0 Mar 23 10:49 host2 -> …/…/devices/pci0000:00/0000:00:10.0/host2/scsi_host/host2 [root@data01 ~]#

看有几个目录，分别在目录下插入刷新磁盘 [root@data01 ~]# echo “- - -” > /sys/class/scsi_host/host0/scan [root@data01 ~]# echo “- - -” > /sys/class/scsi_host/host1/scan [root@data01 ~]# echo “- - -” > /sys/class/scsi_host/host2/scan [root@data01 ~]#

新磁盘已经刷新出现在系统里，sdc [root@data01 ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT fd0 2:0 1 4K 0 disk sda 8:0 0 40G 0 disk ├─sda1 8:1 0 1G 0 part /boot └─sda2 8:2 0 39G 0 part ├─centos-root 253:0 0 35G 0 lvm / └─centos-swap 253:1 0 4G 0 lvm [SWAP] sdb 8:16 0 100G 0 disk └─sdb1 8:17 0 99G 0 part └─data_vg0-data_lv0 253:2 0 99G 0 lvm /data sdc 8:32 0 50G 0 disk sr0 11:0 1 1024M 0 rom [root@data01 ~]#