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Blivet currently supports creating cached LVM logical volumes, where it creates the logical volume and the cache pool in one step, but doesn't support creating the cache pool separately. This means it is not possible to create a cache pool and attach it to an existing logical volume.
This feature is already available in upstream[1] and will be used to enhance LVM cache support in the RHEL system roles[2].
[1] https://github.com/storaged-project/blivet/pull/1004
[2] https://github.com/linux-system-roles/storage/issues/252
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (python-blivet bug fix and enhancement update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2022:7605