Show HN: Open Lustre in the cloud, with ZFS OSTs on object storage not disks

Posted by suprasam on Thursday August 06, 2026 @11:17AM
from the show-hn dept.

https://github.com/zettalane-systems/open-lustre-cloud

Open Lustre is a full working Lustre filesystem - MGS, MDT, an OST per node, active-active HA with failover - brought up on GCP or Azure with one command. The unconventional part is that the OSTs sit on cloud object storage, not disks.

That is possible because of objbacker.io: a ZFS vdev that writes directly to object storage.

The managed Lustre CSI drivers that GKE and AKS ship for their own managed Lustre services mount this filesystem transparently.

( 3 comments | on HN )

Re:Show HN: Open Lustre in the cloud, with ZFS OSTs on objec... by suprasam on Thursday August 06, 2026 @11:23AM (#49197975)

This work was presented at LUG 2026 https://www.opensfs.org/wp-content/uploads/16-ZettaLane_LUG_...

[ Parent | on HN ]

Re:Show HN: Open Lustre in the cloud, with ZFS OSTs on objec... by rahuldhole on Thursday August 06, 2026 @11:41AM (#49198185)

Very nice!

[ Parent | on HN ]

Re:Show HN: Open Lustre in the cloud, with ZFS OSTs on objec... by suprasam on Thursday August 06, 2026 @12:04PM (#49198548)

Thanks. The part that surprised me most was how well ZFS fits object storage and extended to pNFS too!

[ Parent | on HN ]