Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Description of problem:
If I validate a RHEL6 kickstart on a RHEL7 server using pykickstart's ksvalidator (pykickstart-1.99.43.17-1.el7), it errors saying that "reserved-percent" is not valid.  Using the older version supplied with RHEL6 (pykickstart-1.74.20-1.el6) does not error.
The documentation for RHEL6 indicated that the option is in fact supported (confirm with a test deploy):
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Installation_Guide/s1-kickstart2-options.html
--reserved-percent= — Specify a percentage of total volume group space to leave unused. Only usable when creating a new volume group. 

Version-Release number of selected component (if applicable):
Rhel 7.0
Rhel 7.1
Rhel 7.2

How reproducible:
Every time

Steps to Reproduce:
1. include  "--reserved-percent=" on a Rhel 6 kickstart
2. run ksvalidator -v RHEL6 /location/of/kickstart


Actual results:
no such option: --reserved-percent

Expected results:
--reserved-percent is a valid option. 

Additional info:
This is a valid option for RHEL 7 kickstart as well. Thus, running ksvalidator against the kickstart without specifying the version will work (So long as no removed options are used)

Just a bit more info:

This does work properly in 1.74 (the version in RHEL6).  The validation function for volgroup differs between these versions:

From volgroup.py v.1.74:
 class RHEL6_VolGroup(F16_VolGroup):

And from v.1.99:
 class RHEL6_VolGroup(FC3_VolGroup):

FC16_VolGroup inherits from FC3_VolGroup and adds "--reserved-percent" as a valid option.  Using FC16_VolGroup in 1.99 allows it to work as expected (as well as adjusting the parse line later in the function).

Needs a cherry-pick of 207ca9a5f371415096a2a3f3d9d88798a7ecd9ef.

FYI: One of my coworkers submitted a patch for this issue which was merged in the upstream project:

https://github.com/rhinstaller/pykickstart/pull/53

Ah I see that is the commit that was referred to.  Awesome, sorry for the noise.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-2184.html