Documentation: Huge pages in nova

[Javier Charne]

- [X] This doc is inaccurate in this way:

I think echo command should append, instead of overwrite /etc/default/grub:

# echo 'GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX hugepagesz=2M hugepages=2048 transparent_hugepage=never"' > /etc/default/grub

-----------------------------------
Release: 26.0.1.dev7 on 2021-02-22 12:52:17
SHA: c9de185ea1ac1e8d4435c5863b2ad7cefdb28c76
Source: https://opendev.org/openstack/nova/src/doc/source/admin/huge-pages.rst
URL: https://docs.openstack.org/nova/zed/admin/huge-pages.html

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/nova/+/869689

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/nova/+/869689
Committed: https://opendev.org/openstack/nova/commit/0826ee1c686bc1880d9933d1bcc56e4925e71cdc
Submitter: "Zuul (22348)"
Branch: master

commit 0826ee1c686bc1880d9933d1bcc56e4925e71cdc
Author: Rajesh Tailor <email address hidden>
Date: Tue Jan 10 17:49:55 2023 +0530

    Fix huge-page doc

    This change updates the echo command as per description [1],
    to append huge-page specific paramters instead of overwriting.

    [1] https://docs.openstack.org/nova/zed/admin/huge-pages.html

    Closes-Bug: #2002317

    Change-Id: Ibd8b555c4d6a70cd221b12821d6e9d88cf132a4a

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/nova 27.0.0.0rc1 release candidate.