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IL-0422Metadata inconsistencies in Crusoe Cloud's VAST storage in eu-iceland1-a caused I/O errors and failed VM operationsCrusoe Cloud2025- Symptoms
On 16 December 2025 at 17:13 UTC, Crusoe Cloud reported slowness in Shared Storage in its eu-iceland1-a region, which runs on storage from its vendor VAST. Within half an hour the scope was widened to significant slowness and intermittent access problems for Shared Storage users, affecting shared disks and GPU virtual machines in eu-iceland1.
- Root cause
- Component
- Contributing factor
- Remediation
- Implemented a fix for the storage performance issues, returning latency and throughput to normal
- Ran a targeted integrity verification with the storage cluster in a protective maintenance state
- Lifted the broad protective maintenance restrictions after the critical phase of the verification
- Changed the configuration to isolate background recovery processes from active customer workloads
- Ran integrity scans and automated remediation workflows modelled on validated manual recovery procedures
- Upgraded the VAST storage software to add automated tooling for recovery
- Rebooted the VAST cluster to restore access to shared volumes and VM operations
- Applied a configuration update to the storage nodes to speed up recovery workflows
- Remediated the storage node failures of 28 December
- Applied further VAST storage software upgrades on 28, 30 and 31 December and 1 January
- Action items
- VAST to run a full post-incident review and add automation and safeguards that remove reliance on manual steps
- Review the recent stability of the storage cluster with the vendor to prevent recurrences
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