In this session, Philipp provides a concise introduction and overview of LINSTOR and DRBD, explaining how they offer highly available block storage to VMs in CloudStack clusters. From there, Philipp presents the recently introduced features and improvements of LINSTOR and DRBD, including a discussion of the rationale behind the changes and the next items on the project’s roadmap. On the LINSTOR side, this includes: satellite restart time with thousands of resources, general scalability improvements in the range of 1,000 to 10,000 virtual volumes, and storing the master passphrase using systemd credentials (TPM chip), as well as multipathing of DRBD replication links. On the DRBD side: resync without replication, higher bitmap granularity, performance optimizations, zero-copy receive, and more. On the LINSTOR driver in CloudStack: thoughts on online migrating storage volume between primary storage.
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The CloudStack Collaboration Conference 2025 took place in November 19-21 in Milan, Italy, bringing together CloudStack users, developers, and operators from 40+ countries. This annual, in-person event provided a unique opportunity for the global CloudStack community to connect, collaborate, and help shape the future of the open-source platform.
We would like to express our sincere gratitude to our sponsors for their support in making this event possible: ShapeBlue, US Signal, LINBIT, StorPool, CYSO Cloud, DIMSI, CDLAN, Your.Online, Ampere, Stack Console, Yotta, proIO and weSystems.
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Registration is now open for #CloudStackCollab 2026, taking place in Edinburgh, Scotland, on November 18 – 20. Register early and save €130 with the Super Early Bird ticket.
👉 https://cloudstack.short.gy/tzuewW
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