How to hard set readahead in centos 7.4
Oct 19, 2021
What I found out is that since the startup scripts no longer run serially, they now run in parallel, adding startup parameters to rc.local may not work properly.
In the case of readahead, I ended up having to set the following:
vi /usr/lib/tuned/throughput-performance/tuned.conf[disk]
type=disk
devices=*
readahead=8
Where the devices=* could be set to something like devices=vd* or whatever your prefix is for the device you want to set.
