Are you referring to the description of this passage?
Detailed Description
VM/Template configurations (including disks info) are stored on the master
storage domain only for backup purposes and in order to provide the ability
to run VMs without having a running engine/db. This feature aims to change
the current place in which the OVFs are stored while using the existing
<
https://www.ovirt.org/develop/release-management/features/storage/ovfautoup
dater.html> OvfAutoUpdater feature (asynchronous incremental OVF updates).
The expected benefits are:
1. Having "self contained" Storage Domains which will enable to recover
in case of data loss (oVirt supports registration of unknown disks stored on
storage domain in the engine and adding VM from OVF configuration - so
having the VM OVF stored on the same Storage Domain of it's disks will allow
to recover the vm "completeness" from that Storage Domain to the oVirt
engine).
2. Moving out from using the master_fs on the storage domain, as part
of this change the OVFs will be stored on a designated volume located on
each Storage Domain.
3. Adding support for streaming files from the engine to vdsm (will be
discussed later on).
-----Original Message-----
From: Vojtech Juranek <vjuranek(a)redhat.com
Sent:
Wednesday, September 22, 2021 6:12 PM
To: users(a)ovirt.org
Cc: Tommy Sway <sz_cuitao(a)163.com>
Subject: Re: [ovirt-users] about the OVF_STORE and the xleases volume
On Wednesday, 22 September 2021 10:39:34 CEST Tommy Sway wrote:
I wonder if the xleases volume mentioned here refers to ovf_store ?
No, xleases is part of the disk space used internally by oVirt (to manage
concurrent access to the resources, e.g. disk image) and shouldn't be
touched by the user.
OVF store is Open Virtualization Format [1] and it's used for storing these
files, see [2] for more details.
[1] <
https://en.wikipedia.org/wiki/Open_Virtualization_Format>
https://en.wikipedia.org/wiki/Open_Virtualization_Format
[2] <
https://www.ovirt.org/develop/release-management/features/storage/>
https://www.ovirt.org/develop/release-management/features/storage/
importstoragedomain.html
* A new xleases volume to support VM leases - this feature adds
the
ability to acquire a lease per virtual machine on shared storage
without attaching the lease to a virtual machine disk.
A VM lease offers two important capabilities:
* Avoiding split-brain.
* Starting a VM on another host if the original host becomes
non-responsive, which improves the availability of HA VMs.