ironic-python-agent/releasenotes/notes/prevent-deletion-of-shared-...

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---
fixes:
- |
Previously when the ``ironic-python-agent`` would undergo erasure of block
devices during cleaning, it would automatically attempt to erase the
contents of any "Shared Device" clustered filesystems which may be in use
by distinct multiple machines over a storage fabric. In particular
IBM GPFS, Red Hat Global File System 2, and VmWare Virtual Machine File
System (VMFS), are now identified and cleaning is halted. This is important
because should an active cluster be using the this disk, cleaning could
potentially cause the cluster to go down forcing restoration from backups.
Ideally, infrastructure operators should check their environment's storage
configuration and un-map any clustered filesystems from being visible to
Ironic nodes, unless explicitly needed and expected. Please see the
Ironic-Python-Agent troubleshooting documentation for more information.
issues:
- |
Logic to guard VMFS filesystems from being destroyed *may* not recognize
VMFS extents. Operators with examples of partitioning for extent usage
are encouraged to contact the Ironic community.