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Operating Systems AIX access data from a new disk was assigned another rootvg Post 302666751 by bakunin on Thursday 5th of July 2012 05:42:38 AM
Old 07-05-2012
Quote:
Originally Posted by Voran
It seem not assigned to any vg
Yes: it is not assigned to a VG in this system. The information about which disk belongs to which volume group is stored on the disk (the LVCB, etc.) but maintained in the ODM. Operations like importvg read the information stored on the disk to (re-)build the ODM information. synclvodm try to solve conflicts in the case of these two data sets becoming unsynchronized.

Do an importvg without the "-L" (learning) option. naming conflicts will be automatically resolved. You can tell from a PVID being shown in the output of lspv that the disk has to have been part of a VG already. This PVID is also stored on the disk and - by importing the VG - copied into the ODM.

Quote:
but if I tried to assigned hdisk1 to rootvg
Be glad that this won't work: by assigning a PV to a VG the volume is reformatted. This - if successful - would have erased all the data you wanted to import.

A further hint: after importing the VG check /etc/filesystems. Mount points are part of the FS properties and accordingly this file (which is also a representation of ODM information) is updated. Still, you probably might not want the mount points automatically assigned by the system to resolve the conflicts. Therefore, before the mount -a do override the mount points there.

I hope this helps.

bakunin
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KFS(4)							     Kernel Interfaces Manual							    KFS(4)

NAME
kfs - disk file system SYNOPSIS
disk/kfs [ -rc ] [ -b n ] [ -f file ] [ -n name ] [ -s ] DESCRIPTION
Kfs is a local user-level file server for a Plan 9 terminal with a disk. It maintains a hierarchical Plan 9 file system on the disk and offers 9P (see intro(5)) access to it. Kfs begins by checking the file system for consistency, rebuilding the free list, and placing a file descriptor in /srv/name, where name is the service name (default kfs). If the file system is inconsistent, the user is asked for per- mission to ream (q.v.) the disk. The file system is not checked if it is reamed. The options are b n If the file system is reamed, use n byte blocks. Larger blocks make the file system faster and less space efficient. 1024 and 4096 are good choices. N must be a multiple of 512. c Do not check the file system. f file Use file as the disk. The default is /dev/sd0fs. n name Use kfs.name as the name of the service. r Ream the file system, erasing all of the old data and adding all blocks to the free list. s Post file descriptor zero in /srv/service and read and write protocol messages on file descriptor one. EXAMPLES
Create a file system with service name kfs.local and mount it on /n/kfs. % kfs -rb4096 -nlocal % mount -c /srv/kfs.local /n/kfs FILES
/dev/sd0fs Default file holding blocks. SOURCE
/sys/src/cmd/disk/kfs SEE ALSO
kfscmd(8), mkfs(8), prep(8), wren(3) KFS(4)
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