vmware linux添加新磁盘后刷新--重新扫描 SCSI 总线，在不重启虚拟机的情况下添加 SCSI 设备

Linux VMWare 添加新磁盘：不重启刷新SCSI

最新推荐文章于 2025-10-20 20:18:22 发布

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本文介绍了如何在VMware中为Linux系统添加新磁盘后，通过重新扫描SCSI总线来识别新设备，无需重启虚拟机。操作包括对host0, host1, host2等进行`echo "- - -" > /sys/class/scsi_host/hostX/scan`的命令执行，但可能会导致开机进入dracut#的情况。" 48976245,5101559,iOS开发：深入理解Provisioning Profile,"['ios开发', 'Provisioning profile', '真机运行', '打包', '证书管理']

部署运行你感兴趣的模型镜像

[root@centos4 scsi_host]# ls

host0 host1 host2

有几个host就刷几次
[root@centos4 scsi_host]# echo "- - -" > /sys/class/scsi_host/host0/scan
[root@centos4 scsi_host]# echo "- - -" > /sys/class/scsi_host/host1/scan
[root@centos4 scsi_host]# echo "- - -" > /sys/class/scsi_host/host2/scan

[root@centos4 scsi_host]# fdisk -l

Disk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x00081e99

   Device Boot      Start         End      Blocks   Id System
/dev/sda1   *        2048     2099199     1048576   83 Linux
/dev/sda2         2099200    41943039    19921920   8e Linux LVM

Disk /dev/mapper/centos-root: 18.2 GB, 18249416704 bytes, 35643392 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk /dev/mapper/centos-swap: 2147 MB, 2147483648 bytes, 4194304 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

[root@centos4 scsi_host]# echo "- - -" > /sys/class/scsi_host/host0/scan
[root@centos4 scsi_host]# fdisk -l

Disk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x00081e99

   Device Boot      Start         End      Blocks   Id System
/dev/sda1   *        2048     2099199     1048576   83 Linux
/dev/sda2         2099200    41943039    19921920   8e Linux LVM

Disk /dev/mapper/centos-root: 18.2 GB, 18249416704 bytes, 35643392 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk /dev/mapper/centos-swap: 2147 MB, 2147483648 bytes, 4194304 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk /dev/sdb: 21.5 GB, 21474836480 bytes, 41943040 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

[root@centos4 scsi_host]# 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   19G 0 part
├─centos-root 253:0    0   17G 0 lvm /
└─centos-swap 253:1    0    2G 0 lvm [SWAP]
sdb               8:16   0   20G 0 disk
sr0              11:0    1 4.2G 0 rom

[root@centos4 scsi_host]#

重新扫描 SCSI 总线，在不重启虚拟机的情况下添加 SCSI 设备会导致

开机进入dracut#