redis io_error ai_generated true

MISCONF: Failed saving RDB snapshot: disk full

ID: redis/rdb-save-failed-disk-full

Also available as: JSON · Markdown · 中文
90%Fix Rate
88%Confidence
1Evidence
2023-11-20First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
Redis 6.0 active — — —
Redis 7.0 active — — —
Redis 7.2 active — — —

Root Cause

The filesystem where Redis stores RDB files ran out of space, preventing snapshot persistence.

generic

中文

Redis 存储 RDB 文件的文件系统空间不足，无法进行快照持久化。

Official Documentation

https://redis.io/docs/latest/operate/oss_and_stack/management/persistence/

Workarounds

  1. 90% success Free disk space by moving or deleting old RDB/AOF files: find /var/lib/redis -name '*.rdb' -mtime +7 -delete (adjust path). 
    Free disk space by moving or deleting old RDB/AOF files: find /var/lib/redis -name '*.rdb' -mtime +7 -delete (adjust path).
  2. 85% success Add more disk space or mount a larger volume to the Redis data directory, then trigger a manual BGSAVE. 
    Add more disk space or mount a larger volume to the Redis data directory, then trigger a manual BGSAVE.

中文步骤

  1. 通过移动或删除旧的 RDB/AOF 文件释放磁盘空间：find /var/lib/redis -name '*.rdb' -mtime +7 -delete（调整路径）。
  2. 向 Redis 数据目录添加更多磁盘空间或挂载更大的卷，然后手动触发 BGSAVE。

Dead Ends

Common approaches that don't work:

  1. Delete random files from the disk to free space without checking Redis data 50% fail

    May delete critical system files or other application data, causing instability.

  2. Disable RDB persistence entirely with CONFIG SET save '' 30% fail

    Removes all snapshot persistence, risking data loss on crash or restart.