IBM Support

Error installing MVFS RPM on Red Hat 9 from some ClearCase versions

Troubleshooting


Problem

Due to deprecation of SHA1 on Red Hat Enterprise Linux 9, the system might block the installation of the MVFS RPM from some ClearCase® versions.

Symptom

ClearCase® multiversion file system (MVFS) cannot be installed on Red Hat Enterprise Linux 9.

Cause

On ClearCase® versions 9.0.1.14, 9.0.2.6, and 9.1.0.3, the MVFS RPM is signed using SHA1. SHA1 checksum is deprecated by default on Red Hat Enterprise Linux 9, which causes the system to refuse the MVFS RPM installation.

Environment

ClearCase® 9.0.1.14, 9.0.2.6, and 9.1.0.3.
Red Hat Enterprise Linux 9.

Diagnosing The Problem

Check if you are running one of the ClearCase® versions listed in the Environment section:
# /opt/rational/clearcase/bin/cleartool -ver
Check what is the cryptographic policy for your system:
# update-crypto-policies --show
DEFAULT
If it is DEFAULT, then SHA1 is blocked.
Run this command to extract the source code from the SRPM MVFS package:
#  /opt/rational/clearcase/etc/install_mvfs.sh -v makesrc "" /tmp  | grep BAD
Your system is affected if the output shows something like this:
error: /var/adm/rational/clearcase/mvfs/rpm/src/mvfs-9.0.2.06-5.14.0_70.13.1_20220627.el9_0.src.rpm: Header V4 RSA/SHA1 Signature, key ID 12345678: BAD

Resolving The Problem

The MVFS RPM is signed using SHA256 as of ClearCase versions 9.0.2.7, 9.1.0.4, and 10.0.
If installing a release prior to those, this issue can be worked around by temporarily modifying the cryptographic policy for your system if the current configuration blocks the installation of RPM packages with a SHA1 signature.
  • Use this command to show the current policy setting:
    # update-crypto-policies --show
  • Use this command to allow the installation of the MVFS RPM if dynamic or automatic view features are going to be installed:
    # update-crypto-policies --set DEFAULT:SHA1

    After the installation, this setting can be reverted to the setting that was in effect previously.

Document Location

Worldwide

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Document Information

Modified date:
22 January 2024

UID

ibm16837627

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