首先把500G硬盘插入 然后查看
[root@localhost ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 20G 0 disk ├─sda1 8:1 0 1G 0 part /boot ├─sda2 8:2 0 2G 0 part [SWAP] └─sda3 8:3 0 17G 0 part / sr0 11:0 1 918M 0 rom
没有识别硬盘
查看当前系统的host目录
[root@linux-host1 ~]# ls /sys/class/scsi_host/ -l total 0 lrwxrwxrwx. 1 root root 0 Nov 4 16：22 host0 -> ../../devices/pci0000:00/0000:00:10.0/host0/scsi_host/host0 lrwxrwxrwx. 1 root root 0 Nov 4 16：22 host1 -> ../../devices/pci0000:00/0000:00:07.1/ata1/host1/scsi_host/host1 lrwxrwxrwx. 1 root root 0 Nov 4 16：22 host2 -> ../../devices/pci0000:00/0000:00:07.1/ata2/host2/scsi_host/host2 lrwxrwxrwx. 1 root root 0 Nov 4 16：22 host3 -> ../../devices/pci0000:00/0000:00:07.1/ata3/host3/scsi_host/host3
接着执行
echo "- - -"> /sys/class/scsi_host/host0/scan echo "- - -"> /sys/class/scsi_host/host1/scan echo "- - -"> /sys/class/scsi_host/host2/scan echo "- - -"> /sys/class/scsi_host/host3/scan
再次查看
[root@localhost ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 20G 0 disk ├─sda1 8:1 0 1G 0 part /boot ├─sda2 8:2 0 2G 0 part [SWAP] └─sda3 8:3 0 17G 0 part / sdb 8：16 0 500G 0 disk sr0 11:0 1 918M 0 rom
[root@localhost ~]# fdisk /dev/sdb Welcome to fdisk (util-linux 2.23.2). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. Device does not contain a recognized partition table Building a new DOS disklabel with disk identifier 0x4822f5b8. Command (m for help): n Partition type: p primary (0 primary, 0 extended, 4 free) e extended Select (default p): p Partition number (1-4, default 1): First sector (2048-1048575999, default 2048): Using default value 2048 Last sector, +sectors or +size{K,M,G} (2048-1048575999, default 1048575999): Using default value 1048575999 Partition 1 of type Linux and of size 500 GiB is set Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. Syncing disks. [root@localhost ~]# [root@localhost ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 20G 0 disk ├─sda1 8:1 0 1G 0 part /boot ├─sda2 8:2 0 2G 0 part [SWAP] └─sda3 8:3 0 17G 0 part / sdb 8:16 0 500G 0 disk └─sdb1 8:17 0 500G 0 part sr0 11:0 1 918M 0 rom [root@localhost ~]# [root@localhost ~]# [root@localhost ~]# mkfs.ext4 /dev/sdb1 mke2fs 1.42.9 (28-Dec-2013) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 32768000 inodes, 131071744 blocks 6553587 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=2279604224 4000 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 102400000 Allocating group tables: done Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done [root@localhost ~]# [root@localhost ~]# vim /etc/fstab [root@localhost ~]# [root@localhost ~]# cat /etc/fstab # # /etc/fstab # Created by anaconda on Sat Oct 26 16:30:05 2019 # # Accessible filesystems, by reference, are maintained under '/dev/disk' # See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info # UUID=8741f8b3-f01d-4e6b-bfa1-99b38551ea2c / xfs defaults 0 0 UUID=301fa7cc-ec30-442a-8795-76d98b31b0c6 /boot xfs defaults 0 0 UUID=933d254a-8dec-41dd-9f84-f4d08d396796 swap swap defaults 0 0 /dev/sdb1 /data/log ext4 defaults 0 0 [root@localhost ~]# [root@localhost ~]# mkdir -pv /data/log mkdir: created directory ‘/data’ mkdir: created directory ‘/data/log’ [root@localhost ~]# [root@localhost ~]# mount -a