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Description of problem:
If a VDO device is suspended, and a new table is loaded that points to a new backing device, after resuming the VDO will continue to write some metadata to the original device. (This especially affects metadata related to the deduplication index.) It also retains a reference to the original device, possibly preventing the original device from being removed.
Version-Release number of selected component (if applicable):
How reproducible:
Steps to Reproduce:
1. Create a VDO, add some data, and suspend it.
2. Change the underlying device stack, for example by adding a cache or replacing the backing store with a RAID.
3. Load a new table for the VDO reflecting the new backing device, and resume the VDO.
Actual results:
The exact effect likely varies but at a minimum it may result in a loss of deduplication information.
Expected results:
Normal VDO operation
Additional info:
This issue can be worked around by stopping the VDO device completely and restarting it with the new table.
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 (new packages: kmod-kvdo), 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-2022:3919