07 Aug

Gentoo Linux – Failed on WHIRLPOOL verification

Recently I worked on Linux Gentoo server, that was unable to perform system updates due to verification error: Reason: Failed on WHIRLPOOL verification.

Unfortunately I couldn’t find solution online, so I decided to post it here, for people that may run into similar problem.
The error is due to the old version of the Portage installed on the system,
if system is not constantly updated at least with core packages, it might run into this kind of problems.

Solution is to disable WHIRLPOOL verification, and perform the portage updates with the dependencies, and then re-enable it again.

Inside the file /usr/portage/metadata/layout.conf we can find a variable manifest-hashes.
comment it out:

#manifest-hashes = SHA256 SHA512 WHIRLPOOL
manifest-hashes = SHA256 SHA512

Now update portage with all dependencies and uncomment the original manifest-hashes.

We done, and do not forget to update and maintain your Linux System.

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