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This post will describe the replacement of a failed rootvg disk.
Postico 1 5 3 – a modern postgresql client setting. In short the procedure is the following:
1. unmirrorvg rootvg hdisk0 (savebase -v) 2. reducevg rootvg hdisk0 3. rmdev -Rdl hdisk0 4. diag (safely remove hot swap device/drive), physically remove the old disk 5. insert the new disk (diag – hotplug task) 6. cfgmgr -vl scsi0 7. extendvg -f rootvg hdisk0 8. mirrorvg -m rootvg hdisk0 9. bosboot -ad hdisk0 10. bootlist -m normal hdisk0 hdisk1 11. bootlist -m normal -o
In more detail the procedure is described below starting with the errpt logs indicating a drive problem.
In the errpt output we can see that there is some problem with a disk:
Lets have a detailed look at the first error: Transmit 5 5 2.
Having a look at the disk using lsvg and lspv commands indicates that the disk is in a missing state
An attempt to read from the disk using dd failed. So it really looks like the disk died. (actually it could also be that there is a problem with the controller/cable, but in this scenario it is the disk.)
Disk Diag 1 6 3 X 4
In order to replace the disk we have to do the following:
Now, remove the disk from the VG and also remove the disk from the system using rmdev, afterwards use diag to safely remove the physical disk from the system
For the safe physical insertion of the new disk also use the diag command.
Now we need the system to detect and identify the drive, put it into the VG,mirror the drive and install BOS on the BLV and set the boot order.