CentOS LSI Raid card timeout constantly going into read only

[knifebunny]

This can be caused by PCIE Power Management

to disable PCIE Active-State Power Management

First check the current policy using

cat /sys/module/pcie_aspm/parameters/policy

you should see something like

default [powersave] performance

vi /etc/grub.conf
add this to end of the kernel parameters:

pcie_aspm=off

vi /etc/rc.d/rc.local
add this to end:

echo performance > /sys/module/pcie_aspm/parameters/policy

reboot then test with:

cat /sys/module/pcie_aspm/parameters/policy
should show:

default [performance] powersave