Slow write of storage data

Hello, friend!

What's the model of your storage?

Have you performed any operations before writing data to the storage device is slow?

Storage performance problems may occur due to many causes. You are advised to collect storage logs and performance logs and contact the local TAC for professional analysis.

https://e.huawei.com/en/service-hotline-query

Hi, olive!

We did not perform any abnormal operations. We only added 210 disks to the disk domain on February 5, 2021.

Our storage is Huawei OceanStor 2600 V3.

Thanks!

Well, it could be because you add 210 disks to the disk domain and generate a lot of formatting information that needs to be recorded. The memory resources used to store formatting information have reached a bottleneck. As a result, the flash module enters the overload control state on February 16, 2021. In this case, the number of concurrent write operations decreases according to the overload control level, and the disk write latency increases.

You are advised to pause the data balancing task and start the formatting task to release memory resources.

Note:

If your storage is production storage, contact the local TAC to analyze logs.

Hope this can help you!