1611094 : some issues when copy file from dust to pnfs¶

Created: 2026-06-22T13:38:45Z - current status: new¶

Anonymized Summary:¶

A user reports intermittent failures when copying files from /data/dust/[USER]/... to pnfs/desy.de/cms/... using gfal-copy. Errors occur sporadically post-maintenance, with messages like: SSL handshake failed: unexpected EOF while reading (destination). Files succeed upon retries, suggesting transient issues.

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Possible Solution / Next Steps:¶

1. Check SSL/TLS Configuration: Verify if recent dCache updates modified SSL settings (e.g., certificate validity, protocol versions).
2. Monitor Load: Investigate if high demand on the storage backend (dcache-cms-webdav.desy.de) correlates with failures.
3. Test Alternative Protocols: Temporarily switch to non-DAVS protocols (e.g., gsiftp, xrootd) to isolate whether WebDAV-specific SSL issues exist.
4. Logs & Retry Logic: Collect server-side logs during failures; consider adding retry delays in scripts to mitigate transient EOFs.

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Placeholders used: [USER] replaces username/path identifiers. No other PII retained.*