Increasing disk space in a RHEL 7 VM on BTRFS

Change size of virtual disk in VMware (increase only)

Rescan the SCSI bus / devices

# echo "- - -" > /sys/class/scsi_host/host0/scan
# echo 1 > /sys/class/scsi_device/0\:0\:0\:0/device/rescan
# echo 1 > /sys/class/scsi_device/2\:0\:0\:0/device/rescan

Destroy & recreate the partition with the new boundary (hopefully you used the last partition on the disk!)

# fdisk /dev/sda
   p            (print) 
   d            (delete partition)
   3            (third partition)
   n            (new partition)
   p            (a primary partition)
   3            (the third one)
   [return]     (start block default)
   [return]     (end block default)
   w            (write changes to disk)

Pray
```
# reboot
```
Let BTRFS know
```
# btrfs filesystem resize max /
```

ADUFRAY