How to prevent filesystem resize of guest boot device on first boot ?

Solution In Progress - Updated -


  • Is there a way to partition the root disk when initially booting an instance ?

  • For example, when flavor (disk: 80GB) is used, 80GB is allocated to /dev/sda first partition

  • Scenario 1: Can we allocate space to partitions as follows instead ?

/dev/sda - 40GB
/dev/sda1 - 20GB
/dev/sda2 - 20GB
  • Scenario 2: Can we keep the unused space as unallocated :
/dev/sda - 40GB
Unallocated - 40GB


  • Red Hat OpenStack Platform 13.0 (RHOSP)
  • Red Hat Enterprise Linux 7.x (RHEL)

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