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Lustre sources raise xattr errors during restic backup

Backups from Lustre sources hit 'numerical result out of range' errors on hundreds of extended attributes, and the errors grow over time.

Tier II · Emerging Problems that are still building up.

4 public reports · first reported 24 September 2026 · last reported 8 October 2026

Idea report · $9 · No contacts · All sales final

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What's going wrong

People who back up data stored on a Lustre parallel filesystem with restic report that extended attribute reads start failing on a growing number of files, even though the same backups ran cleanly for months.

AI-assisted: written with the help of AI from the reports. The idea report has the full summary.

In the idea report

  • The full summary.
  • The products the 4 reports are about, and how many came each month.
  • Related problems.

No business has been found with this problem yet, so the report has no contacts. All sales are final — no refunds. Pricing.