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:-
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 DEBIAN
mod-active
MOD-ACTIVE(8) InterNetNews Documentation MOD-ACTIVE(8)NAME
mod-active - Batch processing of newsgroups creation and removal commands
SYNOPSIS
mod-active [ctlinnd-command-file ...]
DESCRIPTION
mod-active is a Perl script that updates the active file based on its input lines of ctlinnd "newgroup", "rmgroup" and "changegroup"
commands. It pauses the server briefly while the existing active file is read and rewritten, which not only keeps innd from updating the
active file but also locks against other instances of mod-active.
The script must be run as the news user.
The input to mod-active can come either from one or more ctlinnd-command-file files named on the command line, or from the standard input.
Typically its input is the output from the docheckgroups or actsync commands. Every line which contains the string "ctlinnd newgroup",
"ctlinnd rmgroup", or "ctlinnd changegroup", optionally preceded by whitespace and/or the path to ctlinnd, is noted for the update.
Redundant commands, such as a newgroup directive for a group that already exists, are silently ignored. All other lines in the input are
also silently ignored. After the new active file has been generated, the existing one is renamed to active.old and the new one is moved
into place. The script then displays the differences between the two files. Any groups that were added to the active file are also added
to the active.times file with the string "checkgroups-update".
Please note that no syntax checking is performed on group names by mod-active.
BUGS
Though innd is paused while mod-active works, it is not inconceivable that there could be a conflict if something else tries to update the
active file during the relatively short time that mod-active is working. The two most realistic ways for this to happen are either by an
administrator concurrently doing a manual ctlinnd command, or by innd receiving a control message, then mod-active pausing the server, then
the control message handler script that innd forked running its own ctlinnd command while mod-active is working. Note that such scenarios
are very unlikely to happen.
HISTORY
Written by David C Lawrence <tale@isc.org> for InterNetNews. Converted to POD by Julien Elie.
SEE ALSO active(5), active.times(5), actsync(8), ctlinnd(8), docheckgroups(8), innd(8).
INN 2.5.3 2011-06-10 MOD-ACTIVE(8)