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Description of problem:
The description of 'help append' is not accurately, it add the kernel options to libguestfs appliance not the guest kernel


Version-Release number of selected component (if applicable):
libguestfs-1.28.1-1.10.el7


How reproducible:
100%


Steps to Reproduce:
1. Prepare a image file
# dd if=/dev/zero  of=test.img bs=1M count=1 seek=100

2. # guestfish  -a test.img
><fs> set-append test=TEST
><fs> run
><fs> debug sh "cat /proc/cmdline"
panic=1 console=ttyS0 udevtimeout=6000 udev.event-timeout=6000 no_timer_check acpi=off printk.time=1 cgroup_disable=memory root=/dev/sda selinux=0 TERM=xterm-256color test=TEST


Actual results:


Expected results:


Additional info:

Upstream fix is 6dd371f913332a840b34ad00d52e9fa52711fb0e.

><fs> help append
NAME
    set-append - add options to kernel command line


Verified as above.

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-2015-0303.html