Prevent udev waking up mdadm later. #539
Merged
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Reasoning: At least on RHEL6 when parted created a raid partition on disk,
udev (via /lib/udev/rules.d/65-md-incremental.rules) wakes up mdadm which locks the disk,
so further parted commands with the disk will fail since the disk is busy now.
The /lib/udev/rules.d/65-md-incremental.rules detects anaconda (the Red Hat installer),
and if it find itself running under anaconda, it will not run.
Accordingly also for other installers (in particular the rear installer)
this rule should not be there (and other Linux distros probably do not have it)
which means removing it is the right solution to make rear work also for RHEL6.
See #533