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Description of problem:

The cluster mirror (cmirror) capability is not functional in RHEL8 because it depended on clvmd which has been replaced by lvmlockd.  LVM should prevent a mirror LV from being activated concurrently on multiple nodes in a cluster.  LVM will require a mirror LV to be activated exclusively (on a single node.)  If the mirror LV is converted to a linear LV, then it can be activated on multiple nodes using lvmlockd.

The cmirrord daemon can also be removed since it will no longer be used.

Users of cmirror should contact us for more information or help.

Version-Release number of selected component (if applicable):


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Additional info:

pvmove depends on mirroring, so pvmove will not work while an LV is active on multiple nodes (which would require cmirror).  To use pvmove, activate the LV exclusively on a single node.