Brian Atkinson
New Member
I am currently receiving the following error whenever I go to adjust the smp_affinity/smp_affinity_list files for IRQ's associated the Samsung NVMe SDD PM1725a installed in a Dell PowerEdge R7425 server:
echo: write error: Input/output error
I have stopped/disabled irqbalance using the following:
systemctl stop irqbalance
systemctl disable irqbalance
However, I still get the Input/output error when I try and echo any values into either the smp_affinity or smp_affinity_list files. What is really peculiar about this, is I have no issues updating the values in these files as long as I am on the stock kernel 3.10.0-514 that came with CentOS 7.3; however, whenever I get this error on the following kernels 3.10.0-862.11.6, 4.4.153-1, and 4.18.5-1. Since I am only experiencing this issue in these newer kernels, I imagine there is some setting I do not have set that is preventing me from updating the SMP affinity values for the NVMe SDD's IRQ's. Has anyone else experienced this issue and possibly know how to correct it?
echo: write error: Input/output error
I have stopped/disabled irqbalance using the following:
systemctl stop irqbalance
systemctl disable irqbalance
However, I still get the Input/output error when I try and echo any values into either the smp_affinity or smp_affinity_list files. What is really peculiar about this, is I have no issues updating the values in these files as long as I am on the stock kernel 3.10.0-514 that came with CentOS 7.3; however, whenever I get this error on the following kernels 3.10.0-862.11.6, 4.4.153-1, and 4.18.5-1. Since I am only experiencing this issue in these newer kernels, I imagine there is some setting I do not have set that is preventing me from updating the SMP affinity values for the NVMe SDD's IRQ's. Has anyone else experienced this issue and possibly know how to correct it?
