When Wipe After Delete (WAD) and Enable Discard are both enabled for a VM disk, discarded data might not be wiped after the disk is removed
Issue
A customers RHV system could have a VM disk with WAD and Enable discard checked but when an attempt to remove the disk blocks that were unmapped by the guest would not be wiped, reading them back by a new disk owner (that uses the same blocks) could return the data itself rather than zeroes.
Environment
RHV 4.1 all releases before 4.1.8 that have both Wipe After Delete (WAD) and Enable Discard enabled.
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.
Close
Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.