Backup Failure

Note:
This topic has been translated from a Chinese forum by GPT and might contain errors.

Original topic: br备份失败

| username: TiDBer_freGslX6

【TiDB Usage Environment】Production Environment
【TiDB Version】v4.0.14
【Reproduction Path】Error occurs during backup execution
【Encountered Problem: Phenomenon and Impact】
【Resource Configuration】
【Attachments: Screenshots/Logs/Monitoring】
Previously, there were no issues executing the backup. The scheduled task has been running for about a month without problems. Suddenly, an issue has arisen. I have mounted Tencent Cloud’s object storage on the server. Although read and write speeds are very slow, it was usable before.


| username: TiDBer_freGslX6 | Original post link

The cluster status is also normal.

| username: 像风一样的男子 | Original post link

Reported an IO error. Can you check if the mounted shared disk can read and write normally?

| username: TiDBer_freGslX6 | Original post link

I previously only checked if it could be read. Just now I discovered that a KV cannot be written. Thanks, I’ll go investigate~

| username: Daniel-W | Original post link

What is the status of the BR (Backup & Restore)? Are there any errors?

| username: TiDBer_freGslX6 | Original post link

I don’t know why a large number of files in the deleted state were generated, which filled up the system file count and caused the backup to fail.

| username: TiDBer_freGslX6 | Original post link

Problem solved.

| username: system | Original post link

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