We have a 2 node cluster in which only the primary actually mounts the shared VGs at any specific time. We recently added a volume group to the primary.
* The disks in it are visible to both nodes, but the secondary does not know about the new VG.
* The new VG is not a "shared volume group"
* The new VG is in production
I need to find a way to make the (existing/active) VG on the primary into a "shared VG" available to both nodes.
1. Is there a way to do this without taking both nodes down?
2. How do I make an existing VG a "shared VG"?
Thanks in advance for any guidance you can provide. Procedures I'm finding seem to involve creating the VG and making it shared before actually mounting it and using it on a node.
Are you doing MPIO? Are these physical systems or lpars? Is this HACMP? How do you open the volume group on the system you say that can see the disk?
AIX is not my "native language", I do much more Solaris, so please forgive any terminology mistakes!
Our luns are served from an EMC Clariion san, and are SATA. The cluster is HACMP, with no standalone management server. OS is 5.3. Servers are P6 550s.
Here's the VG from the Primary/active node:
Code:
bash-2.05b# lsvg vg_arc2
VOLUME GROUP: vg_arc2 VG IDENTIFIER: 00cbd24200004c0000000135104bc85d
VG STATE: active PP SIZE: 64 megabyte(s)
VG PERMISSION: read/write TOTAL PPs: 36460 (2333440 megabytes)
MAX LVs: 256 FREE PPs: 0 (0 megabytes)
LVs: 4 USED PPs: 36460 (2333440 megabytes)
OPEN LVs: 4 QUORUM: 5 (Enabled)
TOTAL PVs: 8 VG DESCRIPTORS: 8
STALE PVs: 0 STALE PPs: 0
ACTIVE PVs: 8 AUTO ON: no
MAX PPs per VG: 65536 MAX PVs: 1024
LTG size (Dynamic): 256 kilobyte(s) AUTO SYNC: no
HOT SPARE: no BB POLICY: relocatable
bash-2.05b# lsvg -p vg_arc2
vg_arc2:
PV_NAME PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTION
hdiskpower32 active 7197 0 00..00..00..00..00
hdiskpower33 active 7197 0 00..00..00..00..00
hdiskpower34 active 7197 0 00..00..00..00..00
hdiskpower35 active 7197 0 00..00..00..00..00
hdiskpower41 active 1918 0 00..00..00..00..00
hdiskpower42 active 1918 0 00..00..00..00..00
hdiskpower43 active 1918 0 00..00..00..00..00
hdiskpower44 active 1918 0 00..00..00..00..00
bash-2.05b# lsvg -l vg_arc2
vg_arc2:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
lv_arc9 jfs2 9115 9115 2 open/syncd /archive9
lv_arc10 jfs2 9115 9115 2 open/syncd /archive10
lv_arc11 jfs2 9115 9115 2 open/syncd /archive11
lv_arc12 jfs2 9115 9115 2 open/syncd /archive12
bash-2.05b# lspv |grep vg_arc2
hdiskpower32 00cbd2427b2ff68d vg_arc2 active
hdiskpower33 00cbd2427b35914d vg_arc2 active
hdiskpower34 00cbd2427b279500 vg_arc2 active
hdiskpower35 00cbd2427b2b3c06 vg_arc2 active
hdiskpower41 00cbd24203dcdec2 vg_arc2 active
hdiskpower42 00cbd24203e5c4dc vg_arc2 active
hdiskpower43 00cbd24203df9ccd vg_arc2 active
hdiskpower44 00cbd24203e5eb16 vg_arc2 active
Here are the same commands from the Secondary/inactive node:
Code:
bash-2.05b# lsvg vg_arc2
0516-306 : Unable to find volume group vg_arc2 in the Device
Configuration Database.
bash-2.05b# lsvg -p vg_arc2
0516-306 : Unable to find volume group vg_arc2 in the Device
Configuration Database.
bash-2.05b# lsvg -l vg_arc2
0516-306 : Unable to find volume group vg_arc2 in the Device
Configuration Database.
bash-2.05b# lspv |grep vg_arc2
bash-2.05b# lspv | egrep 'hdiskpower3|hdiskpower4'
hdiskpower32 00cbd2427b2ff68d None
hdiskpower33 00cbd2427b35914d None
hdiskpower34 00cbd2427b279500 None
hdiskpower35 00cbd2427b2b3c06 None
hdiskpower41 none None
hdiskpower42 none None
hdiskpower43 none None
hdiskpower44 none None
The secondary node at least sees the PVIDs of 4 of the disks, the 4 it doesn't see PVIDs for were just added.
"smit cl_admin" shows that this volume group is not shared at all, while various other VGs are shared:
Code:
#Volume Group Resource Group Node List
hbvg <None> cmax1,cmax2
vg_arc cmax_res cmax1,cmax2
vg_bkp cmax_res cmax1,cmax2
vg_cmax cmax_res cmax1,cmax2
vg_dba cmax_res cmax1,cmax2
Thanks...
Last edited by Scott; 08-08-2013 at 11:11 AM..
Reason: Use code tags, please...
My understanding is we don't use (or want) concurrent access, as we only have one node active at a time. The Redbook I'm looking at says
"Shared logical volumesWhile not explicitly configured as part of a resource group, each logical volume in a shared volume group will be available on a node when the resource group is online. These shared logical volumes can be configured to be accessible by one node at a time or concurrently by a number of nodes in case the volume group is
part of a concurrent Resource Group."
We never need the nodes to be accessible by a number of nodes, just one node at a time. Problem now is that the volume group is in production, but not shared, as indicated by what you see when you look at "smit cl_admin -> HACMP Logical Volume Management -> Shared Volume Groups". The volume group in question, vg_arc2, is not even listed there, so it is not yet a shared vg. Thanks again.
I think that you might need to make them visible (although varied off) to each node, so there is an update to make to the VG. If I can find the course notes I will dig in a bit more.
Hello.
System : opensuse leap 42.3
I have a bash script that build a text file.
I would like the last command doing :
print_cmd -o page-left=43 -o page-right=22 -o page-top=28 -o page-bottom=43 -o font=LatinModernMono12:regular:9 some_file.txt
where :
print_cmd ::= some printing... (1 Reply)
Hello Guys,
I want to create a file system dedicated for an application installation. But there is no space in volume group to create a new logical volume. There is enough space in other logical volume which is being mounted on /var.
I know we can use that logical volume and create a virtual... (2 Replies)
How to use "mailx" command to do e-mail reading the input file containing email address, where column 1 has name and column 2 containing “To” e-mail address
and column 3 contains “cc” e-mail address to include with same email.
Sample input file, email.txt
Below is an sample code where... (2 Replies)
Hi ,
can any one tell me,"How to extract the same format from existing excel file to new excel file " using Spreadsheet::WriteExcel or Spreadsheet::ParseExcel module ???
Example_pgm:
Below program is used to read existing excel file..In this program "my $cell = $_;" line is used to... (0 Replies)
Hi,
I have line in input file as below:
3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL
My expected output for line in the file must be :
"1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL"
Can someone... (7 Replies)
This is the script:
#!/bin/sh
if ; then rm -rf /usr/share/WallpaperChanger; fi
if ; then rm -rf /usr/bin/wallch; fi;
if ; then rm -rf /usr/share/applications/wallch.desktop; fi
if ; then rm -rf /usr/share/doc/wallch; fi
if ; then rm -rf /usr/share/man/man1/wallch.1.gz; fi
echo "Delete... (4 Replies)
Hi Friends,
Can any of you explain me about the below line of code?
mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'`
Im not able to understand, what exactly it is doing :confused:
Any help would be useful for me.
Lokesha (4 Replies)
I have written following code to do: ls -l | wc -w, it works:
but when there are not only a single "|", if there are more such as:
ls -l | sort -r | sort | sort -r, This program does not work, i want to know how could i deal with it when there are more "|", another situation is that, if it mixes... (2 Replies)
