8 More Discussions You Might Find Interesting
1. AIX
Hi,
This is follow up to the post https://www.unix.com/aix/233361-san-disk-appearing-double-aix.html
When I connected Pseries Machine HBA Card ( Dual Port ) directly to the SAN Storage DS4300 , I was able to see Host Port Adapter WWN numbers , although I was getting this message... (2 Replies)
Discussion started by: filosophizer
2 Replies
2. AIX
Hello everyone
I would like to hear your opinions about Aix 6.1 and Aix 5.3 with Storage Hitachi the model is USP VM.
We buy it and I want to know day to day task with this storage and Aix.
Thanks for your comments.
Best wishes for this 2010 (2 Replies)
Discussion started by: lo-lp-kl
2 Replies
3. Shell Programming and Scripting
The source number is always in megabytes and I need a script to covert into either MB,GB or TB displayed in a specific format.
Source number examples:
5345376635
34255
5453645846353
The result has to be maximum 2 numbers after the comma
1.13 TB
134.17 TB
413.46 GB
678.45 MB
I... (3 Replies)
Discussion started by: TehOne
3 Replies
4. AIX
Host Name - xxxxxxx
IP Address - xxxxxxxxx
Alert Msg - The percentage of available storage space (DMXMemory) is low (49.54374442289481 percent).
Time received - 14:23
Time Logged - 14:55
Suggested Group - MR-UNIX (5 Replies)
Discussion started by: Nyiko
5 Replies
5. AIX
Hi Guys,
It's me again with this unending support of AIX43 ML 9.
I finally able to test a migration from SSA to SAN, no problem. One problem, I bought some expansion of DS4300, two arrays. The IBM tech told me that before I can connect to the existing DS4300, I need to upgrade the firmware... (1 Reply)
Discussion started by: itik
1 Replies
6. AIX
Hi,
How do I query for unused partition in AIX 4.3 with DAS and SAA storage?
I know most unix administrator don't put all the capacity on the system at once.
thanks,
vene (1 Reply)
Discussion started by: venerayan
1 Replies
7. AIX
Hi:-
What is the best way to determine what type of storage is attached to an AIX server?
Thanks, (2 Replies)
Discussion started by: janet
2 Replies
8. UNIX for Advanced & Expert Users
Hello,
We're setting up a solution for a group of customers with 2 p520 servers and 1 DS4300 unit with 9 disks (at this stage). The meaning is to create two arrays on the DS4300. Both servers will be connected to the DS4300 unit and to both controllers (e.g. Controller 1 connected to server 1... (0 Replies)
Discussion started by: EricBE
0 Replies
vgchgid(1M) vgchgid(1M)
NAME
vgchgid - modify the Volume Group ID (VGID) on a given set of physical devices
SYNOPSIS
PhysicalVolumePath [PhysicalVolumePath] ...
DESCRIPTION
The command is designed to change the LVM Volume Group ID (VGID) on a supplied set of disks. will work with any type of storage, but it is
primarily targeted at disk arrays that are able to create "snapshots" or "clones" of mirrored LUNs. accepts a set of raw physical devices
and ensures that they all belong to the same volume group, before altering the VGID (see section).
The same VGID is set on all the disks and it should be noted that in cases of multi-PV volume groups, all the physical volumes should be
supplied in a single invocation of the command.
Options
recognizes the following options and arguments:
PhysicalVolumePath The raw devices path name of a physical volume.
Background
Some storage subsystems have a feature which allows a user to split off a set of mirror copies of physical storage (termed or just as LVM
splits off logical volumes with the command. As the result of the "split," the split-off devices will have the same VGID as the original
disks. is needed to modify the VGID on the BCV devices. Once the VGID has been altered, the BCV disks can be imported into a new volume
group by using
WARNINGS
Once the VGID has been changed, the original VGID is lost until a disk device is re-mirrored with the original devices. If is used on a
subset of disk devices (for example, two out of four disk devices), the two groups of disk devices would not be able to be imported into
the same volume group since they have different VGIDs on them. The solution is to re-mirror all four of the disk devices and re-run on all
four BCV devices at the same time, and then use to import them into the same new volume group.
If a disk is newly added to an existing volume group and no subsequent LVM operations has been performed to alter the structures (in other
words, operations which perform an automated vgcfgbackup(1M)); then it is possible a subsequent will fail. It will report that the disk
does not belong to the volume group. This may be overcome by performing a structure changing operation on the volume group (for example,
using
It is the system administrator's responsibility to make sure that the devices provided in the command line are all Business Copy volumes of
the existing standard physical volumes and are in the ready state and writable. Mixing the standard and BC volumes in the same volume
group can cause data corruption.
RETURN VALUE
returns the following values:
0 VGID was modified with no error
1 VGID was not modified
EXAMPLES
An example showing how might be used:
1. The system administrator uses the following commands to create the Business Continuity (BCV or BC) copy:
1) For EMC Symmetrix disks, the commands are and
2) For XP disk array, the commands are and
Three BCV disks are created.
2. Change the VGID on the BCV disks.
3. Make a new volume group using the BCV disks.
This step can be skipped as the group file will be created automatically. If the file is manually created it will have different major
and minor numbers (see lvm(7)).
4. Import the BCV disks into the new volume group.
5. Activate the new volume group.
6. Backup the new volume group's LVM data structure.
7. Mount the associated logical volumes.
SEE ALSO
vgimport(1M), vgscan(1M), vgcfgbackup(1M).
vgchgid(1M)