Setting Readahead for MongoDB volume

Solution Unverified - Updated 2024-08-05T06:16:09+00:00 -

Issue

We are receiving warning in MongoDB related to Readahead of the MongoDB volume

WARNING: Readahead for /var/lib/mongodb/data is set to 4096KB",
We suggest setting it to 256KB (512 sectors) or less",

The readhead setting was adjusted by using the command:
```
blockdev --setra 256 /dev/mapper/vg_os-mongodb
```
How can this setting be made persistent?

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