Hi all,

I merged today the last patches for supporting external leases.

In storage domain version 4 (the default in ovirt 4.1), there is now
a new volume named "xleases".

When upgrading older storage domain (version 3), we create and
format the new volume.

If you used a development version with storage domain version 4,
your storage domain may not work with current master. You should
recreated such storage domain.

As a workaround, you can create the special volume manually:

File storage:

    sudo -u vdsm truncate -s 1G
/rhev/data-center/mnt/server:_path/domain_uuid/dom_md/xleases

Block storage:

    lvcreate --name xleases --size 1g domain_uuid

Note that the volume should be also be formatted to actually use
external leases,
but having it should be good enough to keep the system happy.

Thanks,
Nir
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