What version of AIX are you running? Have you installed the appropriate software to merge the disks together?
We have a 5.1 system that blends together two or more hdisks with the same serial number as a vpath. We use the command lsvpcfg to display what is matched up. We then add the vpath device to the volume group.
Just a snippet:-
Code:
RBATTE1 @ /usr/home/RBATTE1>lsvpcfg
vpath1 (Avail pv db1vg02) 50715182 = hdisk688 (Avail ) hdisk906 (Avail )
vpath2 (Avail pv db1vg02) 50815182 = hdisk689 (Avail ) hdisk907 (Avail )
vpath3 (Avail pv db1vg02) 50915182 = hdisk690 (Avail ) hdisk908 (Avail )
etc.
etc.
RBATTE1 @ /usr/home/RBATTE1>lsvg -p db1vg02
db1vg02:
PV_NAME PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTION
vpath1 active 521 3 00..00..00..00..03
vpath2 active 521 1 00..00..00..00..01
vpath3 active 521 1 00..00..00..00..01
vpath4 active 521 1 00..00..00..00..01
vpath5 active 521 1 00..00..00..00..01
vpath6 active 521 1 00..00..00..00..01
vpath7 active 521 1 00..00..00..00..01
If you are newer, then you would need MPIO, which I'm not familiar with, but I think that would blend multiple-path devices into hdisks, so it would seem more normal.
I would also recommend splitting your fibre connections. If you lose a path and feel that you have to replace the fibre card, then you are looking at downtime (well all SAN disks off-line anyway) to do so. If it really is for testing, then splitting would still be a good idea as you could pull a cable and see how it all reacts.
Robin
Liverpool/Blackburn
UK
Last edited by rbatte1; 08-15-2013 at 12:23 PM..
Reason: Added the snippet of output
Hi All,
I have mirrored SAN volume on my B80 rootvg. Can I just remove the mirror and "Remove a P V from a V G" and it will be a diskless AIX?
Is that going to boot on SAN rootvg volume?
Thanks in advance,
itik (3 Replies)
Hello everyone
I got several aix boxes with aix 5.3
I got a ibm san ds4500
My question is
How can I do a match between my disks on aix and the san?
I try to do a match with the LUN but for example. In my san I got several 1 LUN and on one of my aix box I got this
If I type lscfg... (4 Replies)
We are considering a DR strategy of booting AIX 5.3 and 5.3 logical partitions from EMC Symmetrix SAN disks, so that we can replicate via SRDF to a recovery site. Has anyone tried configuring AIX 5.x systems to boot from SAN disk? If so, can you provide any information on the pros and cons of... (6 Replies)
hi all,
have a solaris 9 OS and a SAN disk which used to work fine is not getting picked up by my machine. can anyone point out things to check in order to troubleshoot this ??
thanks in advance. (3 Replies)
Scenario:
I've got 2 M5000's connected to a 9985 SAN storage array. I have configured the SAN disks with stmsboot, format and newfs. I can access the same SAN space from both systems. I have created files from both systems on the SAN space.
Question:
Why can't I see the file created... (3 Replies)
Hi all,
My main function is as a DBA. Another person manages the server and the SAN.
I just want to know if I should be worried about high disk I/O or is it irrelevant as the I/O "load balancing" will be "taken care" of by the SAN?
For example, I have hdisk1-5 and I can see that there are... (2 Replies)
Hi,
I have a production solaris 10 SPARC system (portal). Yesterday legato/Networker gave an I/O Error on one of the files on its SAN mounted disk.
I went to that particular file on the system, did an ls and it showed the file. However, ls -l did not work and it said IO error.
... (6 Replies)
Hello All,
Our servers having emc clarion for the data disks. Is that possible to see those san disks raid level from AIX ?
Am having AIX 6.1 and EMC clarion 5.5.
Regards,
Gowtham.G (3 Replies)
Hi guys, :)
I'm a studient in IT field (AIX)
I'm trying to map a LUN from a SAN (DS3400) to an AIX server (5300-04-00)
I know there is no MPIO on this version of AIX, and i see double my LUN from the SAN
root@localhost # lscfg | grep hdisk
+ hdisk7 ... (13 Replies)
I am in the market looking to purchase a new E950 server and I am trying to decide between using local SSD drives or SSD based SAN. The application that will be running on this server is read-intensive so I am looking for the most optimal configuration to support this application. There are no... (2 Replies)
Discussion started by: ikx
2 Replies
LEARN ABOUT CENTOS
mkqdisk
mkqdisk(8) Quorum Disk Management mkqdisk(8)NAME
mkqdisk - Cluster Quorum Disk Utility
WARNING
Use of this command can cause the cluster to malfunction.
SYNOPSIS
mkqdisk [-?|-h] | [-L] | [-f label] [-c device -l label] [-d [-d ...]]
DESCRIPTION
The mkqdisk command is used to create a new quorum disk or display existing quorum disks accessible from a given cluster node.
OPTIONS -c device -l label
Initialize a new cluster quorum disk. This will destroy all data on the given device. If a cluster is currently using that device
as a quorum disk, the entire cluster will malfunction. Do not run this on an active cluster when qdiskd is running. Only one
device on the SAN should ever have the given label; using multiple different devices is currently not supported (it is expected a
RAID array is used for quorum disk redundancy). The label can be any textual string up to 127 characters - and is therefore enough
space to hold a UUID created with uuidgen(1).
-f label
Find the cluster quorum disk with the given label and display information about it.
-L Display information on all accessible cluster quorum disks.
-d Increase debugging level. Specify multiple times for more information. Currently, specifying more than twice has no effect.
SEE ALSO qdisk(5), qdiskd(8), uuidgen(1)
July 2006 mkqdisk(8)
08-15-2013
