OneLinersCommand workbench
Verified diagnostic signature

The kernel reported a storage or filesystem integrity failure.

Match output from linux-kernel, understand the likely cause, then continue with sourced, read-only checks.

Confidence
high
Platforms
linux
Verified
2026-07-24
Recognized output

Signature matched locally

Buffer I/O error

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Likely causes

What usually produces this signal

  1. Failing device
  2. Transport or controller error
  3. Filesystem corruption
  4. Forced read-only remount
Safe next checks

Collect evidence before changing the system

01

Show the latest kernel messages

dmesg | tail -30

Re-run the corresponding read-only inspection and confirm the intended state.

02

Show free disk space in human-readable units

df -h

The output matches the expected target and exits without an error.