If you need to find out which process is doing io on your Linux server maybe these steps help to find the process.....

If you need to find out which process is doing io on your Linux server maybe these steps help to find the process.....
To reset the ILOM SP, you can do any of the following:....
On Unix and Linux operating systems, a zombie process or defunct process is a process that has completed execution but still has an entry in the process table.....
A core dump of the process will show all process activity for dump time. But without information about the process call you couldn't analyze dump file.....
Use the following method to offline/online or scan the specific HBA. This can be done without reloading the HBA module, nor rebooting the system.....
This documentation shows how to migrate existing logical volumes to other new drives without any downtime. Before moving further, I would like to give some useful information about Logical Volume Management(LVM).....