Repository navigation
KV Host HA/instance HA with shared mountpoint #9750
Description
ISSUE TYPE
- Enhancement Request
COMPONENT NAME
KV Host HA/instance HA
CLOUDSTACK VERSION
N/A
CONFIGURATION
N/A
OS / ENVIRONMENT
KVM
SUMMARY
Host HA support for shared mountpoint.
Many VMware users looking at Cloudstack have FC/iSCSI block storage devices for their VMs.
Has there been any investigation/are there any plans to add KVM HA support for shared mountpoint using clustered filesystems such as OCFS2/GFS2?
Activity
NuxRo commented on Oct 1, 2024
I do not think so, but for now as a workaround one could just run a small (but solid) NFS storage.
You can even keep it disabled in Cloudstack so it doesn't get used by the VMs.
Looking at /usr/share/cloudstack-common/scripts/vm/hypervisor/kvm/kvmheartbeat.sh it doesn't seem like modifying it for shared mountpoint would be too difficult.
nomisunrider commented on Oct 1, 2024
That workaround would be for enabling HA hosts, but would not give any HA instances, correct? As I read the documentation I understand the instances must be hosted on NFS storage, so not sure what the workaround would really achieve.
Thank you
NuxRo commented on Oct 3, 2024
@nomisunrider I'm a bit lost in translation, so let me try to put my ideas in order.
What do you want to achieve, VM HA on a shared mount point?
Then in order to achieve that you need to:
1 - disable Host HA if you have enabled it, perhaps even out of band control if you have it (ipmi etc)
2 - add primary storage based on NFS, it can be disabled in Cloudstack if you do not plan to use it for VMs
After you have done that, your VMs hosted on shared mountpoint should be HA, even if they are not on the NFS.
nomisunrider commented on Oct 5, 2024
Yes, I am looking if VM HA can be supported on a shared mount point in the event of a host failure.
Following your two steps would would result in VM HA in the event a host goes offline? The VMs would power back up on another host?
Thank you
github-actions commented on Dec 26, 2025
This issue is stale because it has been open for 120 days with no activity. It may be removed by administrators of this project at any time. Remove the stale label or comment to request for removal of it to prevent this.
sureshanaparti commented on Apr 10, 2026
Addressed in #12773