Add extra disk without rebooting

Problem

User wants to add extra disk to the Linux. But when running fdisk -l to list all the partitions the new device is not available

Solution

Run hardware scan to detect the new installed disk

echo "- - -" | tee /sys/class/scsi_host/host*/scan

or

for host in /sys/class/scsi_host/*; do echo "- - -" | sudo tee $host/scan; ls /dev/sd* ; done

When see a list of disk not initialized for example

Disk /dev/sdb: 85.9 GB, 85899345920 bytes, 167772160 sectors

you can mount it directlry

first run

fdisk /dev/sdb

create new partition

then format the disk

mkfs.xfs /dev/sdb1

then mount the disk

mount /dev/sdb1 /mnt

Attachment: commands.txt

another option

echo "- - -" >> /sys/class/scsi_host/host_$i/scan