Note: This is a beta release of Red Hat Bugzilla 5.0. The data contained within is a snapshot of the live data so any changes you make will not be reflected in the production Bugzilla. Also email is disabled so feel free to test any aspect of the site that you want. File any problems you find or give feedback here.
Bug 1691095 - remove cluster mirror capability
Summary: remove cluster mirror capability
Status: POST
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: lvm2
Version: 8.1
Hardware: Unspecified
OS: Unspecified
Target Milestone: rc
: 8.1
Assignee: LVM and device-mapper development team
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 2019-03-20 20:46 UTC by David Teigland
Modified: 2019-04-04 18:44 UTC (History)
7 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed:
Type: Bug
Target Upstream Version:

Attachments (Terms of Use)

Description David Teigland 2019-03-20 20:46:58 UTC
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The cluster mirror (cmirror) capability is not functional in RHEL8 because it depended on clvmd which has been replaced by lvmlockd.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):

How reproducible:

Steps to Reproduce:

Actual results:

Expected results:

Additional info:

Comment 2 David Teigland 2019-04-03 21:55:20 UTC
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.

Note You need to log in before you can comment on or make changes to this bug.