SQLITE_IOERR_DATAFATALTier 3 — Handle with care⚠️ MEDIUM confidenceI/O error: data integrity check failed
Category: I/O ErrorVersions: 3.35.0+
🔴 Production Risk Error
Critical — physical storage corruption; restore from backup.
What this means
SQLITE_IOERR_DATA (8202) is returned when a hardware-level data integrity check (such as NVMe end-to-end data protection) detects corrupted data during a read. The data read from the storage device does not match its stored checksum.
Why it happens
- 1NVMe or SCSI end-to-end data protection detected a checksum mismatch.
- 2Storage device returned corrupt data (bit rot, bad sector).
How to reproduce
Read operations on storage with end-to-end data protection enabled.
trigger — this will ERROR
# Surfaces as:
# sqlite3.DatabaseError: disk I/O error
# Check system logs: dmesg | grep -i nvmesqlite3.DatabaseError: disk I/O error
Fix 1
Why this works
Check system logs for storage controller errors: dmesg | grep -i ioerr
Fix 2
Why this works
Run SMART diagnostics: smartctl -a /dev/nvme0
Fix 3
Why this works
Restore from backup — the data on disk is physically corrupt.
Version notes
Sources
📚 Official docs: https://www.sqlite.org/rescode.html#ioerr_data
🔧 Source ref: sqlite3.h — SQLITE_IOERR_DATA = 8202
Confidence assessment
⚠️ MEDIUM confidence
Stable.
See also
⚙️ This error reference was generated with AI assistance and reviewed for accuracy. Examples are provided to illustrate common scenarios and may not cover every case. Always test fixes in a development environment before applying to production. Spotted an error? Suggest a correction →