ExpressCluster X 3.1 for Linux Getting Started Guide - Nec

Chapter 5 Notes and RestrictionsAfter start operating ExpressClusterNotes on situations you may encounter after start operating ExpressCluster are described in thissection.Error message in the load of the mirror driver in an environmentsuch as udevIn the load of the mirror driver in an environment such as udev, logs like the following may berecorded into the message file:kernel: [I] NMP1 device does not exist.(liscal_make_request)kernel: [I] - This message can berecorded on udev environment when liscal is initializing NMPx.kernel: [I] - Ignore this and followingmessages 'Buffer I/O error on device NMPx' on udev environment.kernel: Buffer I/O error on device NMP1, logical block 0kernel: NMP1 device does not exist.kernel: Buffer I/O error on device NMP1, logical block 112This phenomenon is not abnormal.When you want to prevent the output of the error message in the udev environment, add thefollowing file in /etc/udev/rules.d.filename: 50-liscal-udev.rulesACTION=="add", DEVPATH=="/block/NMP*", OPTIONS+="ignore_device"ACTION=="add", DEVPATH=="/devices/virtual/block/NMP*", OPTIONS+="ignore_device"File operating utility on X-WindowSome of the file operating utilities (coping and moving files and directories via GUI) onX-Window perform the following: Checks if the block device is usable.Mounts the file system if there is any that can be mounted.Make sure not to use file operating utility that perform above operations. They may cause problemto the operation of ExpressCluster.136ExpressCluster X 3.1 for Linux Getting Started Guide