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Full Discussion: AIX upgrade fails
Homework and Emergencies Emergency UNIX and Linux Support AIX upgrade fails Post 302875843 by rbatte1 on Wednesday 20th of November 2013 12:58:46 PM
Old 11-20-2013
When you un-mirrored, do you expect to be able to reboot from the removed disk? This is not the case. If you did something like:-
Code:
unmirrorvg rootvg hdisk1
reducevg hdisk1
rmdev -dl hdisk1

... and then pulled it, then hdisk1 is empty if the reducevg completes.

It seems counter intuitive, but assuming that the two disks were completely mirrored and bootable, you would have been safer to shutdown, pull the disk, boot. That way, if you need to, you could have forced the boot via SMS to start from the disk you pulled out.

If hd5 is not on hdisk0, this would suggest that it was only on hdisk1. The unmirror will not move LVs that are not mirrored. This would mean that you could not take hdisk1 out the VG of course, so that would suggest that something was wrong at that point.


Before we panic too much. Are you happy that you have recent mksysb media to recover with?



Robin
 

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bootconf(4)						     Kernel Interfaces Manual						       bootconf(4)

NAME
bootconf - boot device configuration table DESCRIPTION
The file contains the address and disk layout type of the system's boot devices or lif volumes. It is used by the and HP-UX kernel control scripts (fileset to determine how and where to update the initial boot loader. Normally the kernel's script queries the system's hardware and creates the file. In rare cases when either the system configuration cannot be automatically determined or additional and/or alternate boot devices should be automatically updated, the administrator must edit the file manually. There is one line in the file for each boot device. Each line contains the following blank-separated fields in the order shown: disk type A flag indicating how the file system(s) on the disk are laid out. The flag must be one of the following: Indicates that the root disk is in LVM or VERITAS Volume Manager (VxVM) format. If LVM or VxVM mirrors are used, then each of the "mirrors" must have its own line in the file. Indicates that the root disk is in the "whole disk" format with no partitions, but boot and swap space are reserved outside the file system. device file The absolute path of the device special file that accesses the physical device where the boot area is located. For LVM root disks, the device special file is the physical volume(s) returned by the command. For "whole disks" this is the device file that references the entire disk. Blank lines are permitted. Any line beginning with a is considered to be a comment. DIAGNOSTICS
The Software Distributor log file contains diagnostic messages under the fileset if the file is incorrect. Most of the messages are self- explanatory; a few warrant additional explanation: If there are no other messages about the file is probably empty. Otherwise, the file is not in the proper format, and the other messages will explain what the problem is. The specified device file does not point to a disk where there is a lif which contains the file Some character other than or is in the first field of a line. As of release 10.0, the boot areas in must all be on the same type of disk layout. There are characters after the device file specification. EXAMPLES
The boot area is on an LVM root disk: l /dev/disk/disk7_p2 The boot area is on a whole disk layout: w /dev/disk/disk7 WARNINGS
All of the boot devices in the file must have the same disk layout. AUTHOR
was developed by the Hewlett-Packard Company. FILES
SEE ALSO
mediainit(1), hpux(1M), hpux.efi(1M), mkboot(1M), vgdisplay(1M), lif(4), intro(7). documentation. bootconf(4)
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