Skip to main content
ONTAP FLI

ONTAP FLI HP host remediation

Contributors netapp-aherbin netapp-barbe
PDFs

Before running the ONTAP FLI migration on an HP host, complete these pre-migration steps. There are separate steps for offline and online migrations.

Pre-Migration - Offline FLI

These steps are common for both online and offline FLI. Before unprovisioning the source LUN from the host, ensure the following steps are completed.

Filesystem (LVM & Non-LVM) Host Cluster (SCSI3 PR) SANBOOT

Step 1: Collect end-to-end Block Device configuration: multipath health/paths, LVM layout on the boot LUN, and UEFI settings confirming the correct boot device and boot parameters.

Step 1: Capture overall cluster details and the disks involved in the migration.

Step 1: Collect end-to-end SAN-boot configuration: multipath health/paths, LVM layout on the boot LUN, and UEFI settings confirming the correct boot device and boot parameters.

Step 2: Make sure the /etc/fstab entries for the respective data devices (LVM/Non-LVM) are proper.

Step 2: Shut down cluster services gracefully as per the recommended procedure.

Step 2: Make sure the /etc/fstab entries for SAN Boot device including the data devices (lvm/nonlvm) are proper

Step 3: Ensure all the operations to the target mount points are paused. Ensure there are no processess still accessing the blockdevice . If required drain/kill the open process handles.

Step 3: Remove the SCSI block devices associated with the multipath device.

Step 3: From the UEFI shell, verify the device mapping table and boot into hpux from the Storage device

Step 4: Umount the filesystem & perform the LVM volume group configuration backup. Deactivate the VG & export the VG

Step 4: Rescan the host to ensure there are no stale entries in the existing device mapping.

Step 4: Make sure primary boot device is set to Storage device so that it will automatically boot on subsequent reboots

Step 5: Remove all the stale SCSI device files.

Step 5: Reboot the host to ensure the host can come up fine the above changes. Once the host comes up fine, understand the host pre remediation for FLI migration is ready.

Step 6: Rescan the sci bus so that the host has the updated device list eg: ioscan -fnC disk

Step 6: Now shutdown the sanboot host, to proceed with ONTAP FLI workflow.

Pre-Migration - Online FLI

Below are specific steps of Online FLI but these steps must be preceded by steps in the Pre-Migration OFfline FLI The following steps must be carried out after the NetApp LUN is provisioned to the Host.

Filesystem Block device LVM (FS) Sanboot

Step 1: Rescan storage on all the mapped HP-UX hosts

Step 1: Rescan storage on all the mapped HP-UX hosts.

Step 1: Rescan storage on all the mapped HP-UX hosts

Step 1: PowerON the server

Step 2: identify the multipath devices

Step 2: identify the multipath devices

Step 2: identify the multipath devices

Step 2: From the UEFI shell, verify the device mapping table and boot into hpux from the new Storage device

Step 3: Check for the filesystem details

Step 3: Identify the multipath device ID and present it to the respective application.

Step 3: Ensure the new LVM device files are properly created

Step 3: modify the primary boot device to new Storage lun Restart the host to boot from newly mapped LUN that is part of LUN Import

Step 4: Mount the devices back to the respective folders

Step 4: Import the VG/LVM

Step 5: Activate the VG

Step 6: List down the LVs present on the VG

Step 7: Mount the LVMs back to the respective folders
Note Refer to OS Vendor Documentation for Latest and updated command list.
Steps

  1. Identify storage devices.

    ioscan -fnC disk
sanlun lun show all (Works on Netapp Storage)
sanlun lun show all -pv
sanlun lun show -wwpn

  2. Identify the volume group and filesystems.

    vgdisplay -v /dev/vg_name
vgdisplay /dev/vg_name
lvdisplay /dev/vg_name/lv_name

  3. Unmount filesystem and export VG.

    bdf
umount /mount_point
vgchange -a n /dev/vg_name
vgexport /dev/hpux_vg_online

  4. Rescan after detaching to confirm clean state.

    insf -e
ioscan -fnC disk