openstack/diskimage-builder
Code Issues Proposed changes
3d133a3eaf
diskimage-builder/elements/rhel
History
Pino Toscano f35aace69f Use shorter temporary file names for kpartx 
The loopback handling in the Linux kernel limits the filenames of
files associated to loopback devices, see also linux/loop.h.
This is reflected also on userspace, as kpartx will silently do nothing
(exiting with 0) when requesting to remove a filename longer than 64
characters, as that name will obviously not match the truncated
filename. The result of this is that, when extracting qcow2 images for
the first time, if the qcow2 filename is long enough then the loopback
device will not be removed, remaining as stale in the host.

As a workaround, use a temporary file name when convering a qcow2 image
to raw, instead of using the base name of the qcow2 file.
While this still will not fix the issue when manually using a long
temporary directory (e.g. TMP_DIR=/very/long/etc...), at least should
avoid it in other cases.

Change-Id: Ibf46cd313a9d89412c0e1068fa0993be6c5a29db
2015-04-21 10:36:33 +02:00
..
bin Check python with flake8 instead of dib-lint 2014-11-21 09:04:52 -08:00
environment.d Set DISTRO_NAME in OS environment.d 2014-05-28 12:22:02 -04:00
finalise.d Standarise tracing for scripts 2015-02-12 10:41:32 +11:00
root.d Use shorter temporary file names for kpartx 2015-04-21 10:36:33 +02:00
element-deps Adds RHEL common element 2014-07-25 14:17:03 -04:00
element-provides Use provides to note an element provides an OS 2014-04-10 14:42:04 +01:00
README.rst Create docs site containing element READMEs 2015-02-10 11:45:35 -08:00

README.rst

rhel

# Overrides:

## General * Downloading the Red Hat Enterprise Linux cloud image requires a valid Red Hat Network login and a subscription to Red Hat Enterprise Linux 6 Server product. * diskimage-builder does not integrate directly with RHN, so a manual download is required. Please visit https://rhn.redhat.com/rhn/software/channel/downloads/Download.do?cid=16952 to download the qcow2 file. * Set DIB_CLOUD_IMAGES to "file:///download_path" * Overriding of DIB_RELEASE is necessary when a new version of the RHEL qcow2 image is available and the default image has not yet been updated in diskimage-builder.

## Red Hat Subscription Manager (RHSM)

Certificate-based Red Hat Subscription Management (RHSM) is the default registration type.

  • Set DIB_RHSM_USER and DIB_RHSM_PASSWORD to register the system with RHSM during the image building process. This will apply the associated Red Hat Enterprise Linux Server subscription so the latest package updates can be applied. At the end of the image building process, the system will be unregistered from RHSM.
  • Set DIB_RHSM_POOL to a subscription pool if you do not want the system to use the --auto-attach feature of subscription-manager.
  • Set DIB_RHSM_REPOS to a space-separated list of Red Hat repositories to enable.

## Red Hat Network (RHN)

Set DIB_REG_TYPE=rhn for Red Hat Network (RHN classic) registration. The image building process will register the system to RHN and apply the associated Red Hat Enterprise Linux Server subscription so the latest package updates can be applied. At the end of the image building process, the system will be unregistered from RHN.

  • For RHN username/password authentication set DIB_RHSM_USER and DIB_RHSM_PASSWORD. To use a Satellite server activation key set DIB_SAT_KEY. If adding RHN channels username and password must be set.
  • When registering to Satellite set DIB_SAT_URL to the Satellite server URL and DIB_SAT_CERT_RPM_URL to the Satellite certificate.
  • Set DIB_RHN_CHANNELS to a space-separated list of RHN channels to add. Example: DIB_RHN_CHANNELS=rhel-x86_64-server-6 rhel-x86_64-server-6-rhscl-1. RHN username/password is required for this.