If a device contains an active logical volume, BLKRRPART will report that the
device is busy. This will cause this device to be filtered by
"non-install-devices" procedure, which is not desired.
Make sure to deactivate all logical volumes before device probing.
Fixes <https://issues.guix.gnu.org/42683>.
* gnu/installer.scm (installer-program): Add lvm2-static to the inputs.
* gnu/installer/parted.scm (remove-logical-devices): New procedure,
(init-parted): call it.