No space on device errors building kubernetes and qemu

[Scott Little]

Brief Description
-----------------
qemu and kubernetes fail repeatedly to build on small ramdisks with error 'No space on device'.

Severity
--------
Minor

Steps to Reproduce
------------------
build-pkgs

Expected Behavior
------------------
all packages build. 'No space on device' errors are never seen.

Actual Behavior
----------------
qemu and kubernetes fail repeatedly to build on small ramdisks with error 'No space on device'. A lot of compute time is wasted before the packages gets a chance to build successfully on a harddisk.

Reproducibility
---------------
intermittent, depends on available ram

System Configuration
--------------------
N/A

Branch/Pull Time/Commit
-----------------------
March 14, 2022

Last Pass
---------
N/A

Timestamp/Logs
--------------

17:21:26 17:21:26 compute_resources: MAX_WORKERS=4, MOCKCHAIN_RESOURCE_ALLOCATION=0:11:6:3

18:49:59 18:49:59 IOError: [Errno 28] No space left on device
18:49:59 18:49:59 Error building kubernetes-1.21.8-1.21.8-1.tis.4.src.rpm on 'b3'.

18:50:07 18:50:07 IOError: [Errno 28] No space left on device
18:50:07 18:50:07 Error building qemu-kvm-ev-3.0.0-0.tis.1246.src.rpm on 'b3'.

Test Activity
-------------
Build

Workaround
----------
N/A

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/starlingx/integ/+/833846

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/starlingx/integ/+/833846
Committed: https://opendev.org/starlingx/integ/commit/01a95fc6ca1325d7995fd0f371be23503e8656ce
Submitter: "Zuul (22348)"
Branch: master

commit 01a95fc6ca1325d7995fd0f371be23503e8656ce
Author: Scott Little <email address hidden>
Date: Tue Mar 15 11:38:56 2022 -0400

    Fix qemu and kubernetes build resource requirements

    Qemu and kubernetes build failed to build under a 3 GB ramdisk.
    The 6 GB ramdisk was ok.

    Increase the minimum resources for these packages to 6 GB.

    Closes-bug: 1964980
    Signed-off-by: Scott Little <email address hidden>
    Change-Id: I6027a4c02c15ef87a405ad300e967499c103b452