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Help Center/ MapReduce Service/ Component Operation Guide (Normal)/ Using ClickHouse/ ClickHouse FAQ/ How Do I Do If the Disk Status Displayed in the System.disks Table Is fault or abnormal?

How Do I Do If the Disk Status Displayed in the System.disks Table Is fault or abnormal?

Updated on 2022-12-09 GMT+08:00

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Question

How do I do if the disk status displayed in the System.disks table is fault or abnormal?

Answer

This problem is caused by I/O errors on the disk. To rectify the fault, perform the following steps:

Method 1: Log in to FusionInsight Manager and check whether an alarm is generated indicating that the disk I/O is abnormal. If yes, replace the faulty disk by referring to the alarm help.
Method 2: Log in to FusionInsight Manager and restart the ClickHouse instance to restore the disk status.
NOTE:

If an I/O error occurs but the disk is not replaced, the disk status will still turn to fault or abnormal.

Parent topic: ClickHouse FAQ

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Next topic: How Do I Migrate Data from Hive/HDFS to ClickHouse?

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