[CentOS-devel] VDO on CentOS Stream

Brian Stinson

brian at bstinson.com
Wed Sep 25 19:46:35 UTC 2019

On Wed, Sep 25, 2019, at 14:39, Andrew Walsh wrote:
> Hello,
> First, let me express how excited I am by the news of the CentOS
> Stream offering.  I am really looking forward to how this works out in
> the long run.
> I am in the group that builds VDO, and it is currently delivered as a
> kmod in CentOS Stream, RHEL, and CentOS.  This requires that if the
> signatures of the symbols that VDO uses change from one kernel to the
> next, we may need to rebuild the package against the more recent
> kernel.
> The current version of kmod-kvdo ( delivered in
> CentOS Stream is the equivalent of the RHEL-8.0/CentOS-8.0 GA, while
> the version of the kernel (4.18.0-144.el8) is newer.  In the time
> between the kernel that kmod-kvdo was built against (4.18.0-72.el8)
> and the current kernel in CentOS Stream, the signatures have changed.
> As a result, the kernel modules delivered in the kmod-kvdo package
> cannot be loaded due to symbol mismatches (all device mapper related
> symbols that change periodically, from what I've experienced).
> I believe that a simple rebuild of kmod-kvdo- against
> kernel-4.18.0-144.el8 should be effective enough to get it working
> again.
> How can I help facilitate this rebuild now and/or moving forward?  I
> realize that things are still very much in motion and not fully
> implemented/decided at this point.
> Andy Walsh
> _______________________________________________
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> CentOS-devel at centos.org
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Would a rebuild of kmod-vdo happen from these sources:


or are there changes needed?

Brian Stinson 

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