How to re-check a resized virtual disk in linux

To recognize a newly added disk:

root@host:#echo "- - -" > /sys/class/scsi_host/host*/scan

To recognize the modified size of old disk:

root@host:# fdisk -l

[...]
Disk /dev/sdb: 11.7 GB, 10737418240 bytes
[...]

Disk /dev/sdb: 214.7 GB, 214748364800 bytesroot@host:# ls /sys/class/scsi_disk/
0:0:0:0  0:0:1:0
root@host:# echo '1' > /sys/class/scsi_disk/0\:0\:1\:0/device/rescan
root@host:# fdisk -l

[...]

Disk /dev/sdb: 236.5 GB, 214748364800 bytes