Hi sanpad,  PowerPath-for-Linux-5.7-and-Minor-Releases-Installation-and-Administration-Guide (attached) describes the process in page 42:  1. Blacklist all devices in /etc/multipath.conf     a. Save a copy of /etc/multipath.conf as /etc/multipath.conf.bak for backup if it already exists.     b. Edit /etc/multipath.conf so that it contains only the following lines:           blacklist {               devnode "*"           } 2. Ensure dm-multipath does not start automatically at boot.     # chkconfig multipathd off     # chkconfig --list multipathd -- - -Service should be off on all run levels 3. Recreate initramfs so that dm-multipath is excluded from initramfs.     # dracut /boot/initramfs-wo-DM-$(uname -r).img $(uname -r) 4. Add a new boot entry with the initramfs file created in previous step in the /boot/grub/menu.lst file. 5. Reboot the host with the new initramfs image and ensure dm-multipath does not have any devices configured.     # multipath -ll --- should not return any dm devices  As you can see, removing dm-mpio requires rebooting the host. PowerPath installation doesn't require any reboot.  Regards  Javier Soriano PowerPath Corporate Systems Engineer
Is migrating the multipath to EMC powerpath from Linux Device Mapper is a disruptive or non-disruptive process?? Is there any document which gives the instructions on doing that?  Thanks
Migrating to EMC powerpath from Linux DM