https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=241070
Bug ID: 241070
Summary: dumpon: dumpon opens geom devices non-exclusively
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Many People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
dumpon opens geom devices non-exclusively. This might be required in order to
share a device for swap and dump purposes. However, it's also dangerous as it
allows a single device to be used as both a dump device and a storage device.
Steps to reproduce:
> sudo dumpon vtbd1
> sudo zpool create foo vtbd1
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