In vmware linux, after a new disk is added, refresh the disk, scan the SCSI bus again, and add the SCSI device without restarting the VM.

In vmware linux, after a new disk is added, refresh the disk, scan the SCSI bus again, and add the SCSI device without restarting the VM.

[Root @ centos4 scsi_host] # ls

Host0 host1 host2

[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

Ipv── 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 1 4.2G 0 rom

[Root @ centos4 scsi_host] #

Re-scan the SCSI bus. Adding a SCSI device without restarting the VM will cause

Boot into dracut #