Skip to main content
ONTAP FLI

Perform ONTAP FLI AIX post-migration host remediation

Contributors netapp-barbe
PDFs

After migration, AIX hosts require remediation steps to ensure the newly imported LUNs are properly recognized and functional.

Post-Migration - Offline FLI

For Offline FLI, bring the LUN online after deleting the lun import and confirming host initiators are connected.

Filesystem Block device LVM (FS) Cluster Sanboot

Step 1: Rescan storage on all the mapped AIX hosts

Step 1: Rescan storage on all the mapped AIX hosts.

Step 1: Rescan storage on all the mapped AIX hosts

Step 1: Rescan storage on all the mapped AIX 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: identify the multipath devices

Step 2: Verify the boot device list from the IPLInitial Program Load/SMS menu will list the new LUNs referencing the devices list coming from new Storage device. Set the boot order to the new device list path

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 LUNs are discovered

Step 3: Check for the filesystem details

Step 3: Ensure that the server boots up properly

Step 4: Mount the devices back to the respective folders

Step 4: Activate the VG

Step 4: verify the required cluster configuration and start the cluster application

Step 4: Restart the host to boot from newly mapped LUN that is part of LUN Import

Step 5: List down the LVs present on the VG

Step 5: Validate the cluster status and the application that is consuming.

Step 6: Mount the LVMs back to the respective folders
Note Refer to OS Vendor Documentation for Latest and updated command list.
Steps

  1. Rescan after detaching to confirm clean state.

    cfgmgr

  2. Identify storage devices.

    lsdev -Cc disk
sanlun lun show all
sanlun lun show all -pv
lsmpio -l hdiskx

  3. Verify device is attached.

    lspv |grep hdiskx

  4. Identify the volume group and filesystems.

    lspv
lsvg <vg_name>
lsvg -l <vg_name>
lsvg -p <vs_name>

  5. Varyonvg and mount filesystems.

    varyonvg <vg_name>
mount /mount_point
df -g

Post-Migration - Online FLI

After deleting the import relationship, confirm the new LUN operates independently with UNMAP enabled. After deleting the LUN import, check if the LUN is set with -space-reserve disabled and -space-allocation enabled. If not, modify it accordingly.

Filesystem Block device LVM (FS) Sanboot

Step 1: Rescan storage on all the mapped AIX hosts

Step 1: Rescan storage on all the mapped AIX hosts.

Step 1: Rescan storage on all the mapped AIX hosts

Step 1: Rescan storage on all the mapped AIX hosts

SCSI UNMAP is automatically enabled if the device is thin provisioned.

SCSI UNMAP is automatically enabled if the device is thin provisioned.
Steps

  1. Rescan after detaching to confirm clean state.

    cfgmgr

  2. Identify storage devices.

    lsdev -Cc disk
sanlun lun show all
sanlun lun show all -pv
lsmpio -l hdiskx

  3. Verify device is attached.

    lspv |grep hdiskx

  4. Verify UNMAP on the device:

    chfs -a reclaim=normal /mount_point
lvmstat -v vg_name -r
AIX/PowerVM

Step 1

Capture host information.

Step 2

Unmount the filesystem.

Step 3

Take a backup of the VG.

Step 4

Deactivate the VG.

Step 5

Export the VG.