ipldevice is critical to the operation of installing certain products. It should be a hard link of your boot device.

We may receive ipldevice related problem during installation or while taking mksysb backup.

During OS update

==============

I have received the below error message when I try to update the TL 6100-07-03-1207 from 6100-05-01-1016

When I check the ipldevice on the location /dev , it is not found.

To solve this problem :

I checked the luns under rootvg
 

To find Which lun is having the boot device hd5

Goto /dev path and searched for the rhdisk25 and rhdisk26

Now checked with the major number and minor number like below :-

And didn’t find the ipldevice. Hence created the hardlink from source as character device file.

In our case “rhdisk25”

If ipldevice already exist then we have to force the hard link creation

During mksysb backup

====================

While taking mksysb backup and facing the ipldevice missing problem , then
We can follow the same procedure as shown above.
After performing it, then create the boot image

 
Now rectified the ipldevice problem and good to go for mksysb backup

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0516-034 : Failed to open VG special file is the error message

VG information not found in hacmp

We have faced a problem while reading the vg (volume group) information as (0516-034 : Failed to open VG special file in hacmp). Our San team was doing some maintenance activity and we disabled 1 lun path on the mirrored vg.
The HACMP cluster’s resource group is showing as online,however due to some reason vg information not found while trying to read using lsvg vgname. The file systems of that volume group were used by processes where as our application team was unable to connect with the application.

In order to solve the vg problem we requested the (sap) application team to bring down the application and they were unable to do it.

We have performed the below steps in order to solve the vg information reading problem.
Checked the vg is online

Tried to read the vg information

There are 2 luns, hdisk56 which is working fine and hdisk57 which is one of the lun from the storage which is currently under maintenance.

To identify which lun is good

No output from lquerypv command for hdisk57 . This means some problem with the PV .

The below command is used to identify the LVs details about a volume group on a pv

To check the mount point of the faulty vg whether it is currently mounted or not

While trying to read the LVs information we are getting the below error as ? mark

Identify which processes are utilizing the file system

Use the below details to bring the resource group offline / online

Then varyoff the volume group using varyoffvg vgname, export the volume group , using exportvg vgname.
Tried to do learning import

Reading the lun config

Since it is the enhanced concurrent VG, we are using the -c option

Imports the definition of a volume group.

For changing quorum, chvg is erroring to varyon the vg

As we know the problem ,using the force varyon option

Now able to read the vg information

File system check is done

Now fixing the problem

Testing the mount now manually

Unmount the filesystem, varyoff the vg and test it on the cluster level now

Now using the clRGinfo checking the cluster status

“0516-034 : Failed to open VG special file” issue resolved .. Enjoy

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In this article, I have explained the problem which I faced while adding memory to the LPAR using HMC command line (with the error code HSCL297A). When I tried to add the memory using command line due to network problem the connection with HMC got disconnected and less memory got add to the LPAR than the requested value.

On server the current memory 38 GB as you can see in below output

To find the LPAR resides on which frame run the below for loop

Out Put

Checking the memory information in Frame

Searching the memory information using LPAR name

Searching the memory information using lpar Id

I have ran the following command to add the memory but command hung

Pressed control C , now tried to run the same command with 5 minutes time out duration and got failed.

Hence restarting the ctrmc daemon

Now if we check the memory on the lpar 428544 MB got added as we interrupted the memory addition process

Again tried to add the pending memory and getting the below error

Now lets try the command rsthwres . The use of rsthwres is – “Restores the hardware resource configuration of a managed system, following the failure of a dynamic logical partitioning operation.”

Now add the required memory value in mb 35328

Now update the profile for the memory , to avoid the loss of the additional memory details in case of reboot of the
lpar

Check the profile now in GUI from HMC

Resolve the problem with HSCL297A error … Have fun HSCL297A !!!!!!!!!!!11

The post add memory to lpar using hmc command line,HSCL297A some mismatches between pending and current appeared first on web-manual.net.

On this tutorial , I just want to share few details about Log Files in PowerHA SystemMirror  or HACMP from IBM PowerHA SystemMirror 7.1 redbook..

Log Files in PowerHA SystemMirror : The PowerHA SystemMirror software writes the messages it generates to the system console and to several log files. Because each log file contains a different level of detail, system administrators can focus on different aspects of PowerHA SystemMirror processing by viewing different log files. PowerHA SystemMirror allows you to view, redirect, save and change parameters of the Log Files in PowerHA SystemMirror, so you can customized them to your particular needs.

The main log files include:

• /var/hacmp/adm/cluster.log : This file tracks cluster events.
• /var/hacmp/log/hacmp.out : This file records the output generated by configuration scripts as they execute. Event summaries appear after the verbose output for events initiated by the Cluster Manager, making it easier to scan the hacmp.out file for important information. In addition, event summaries provide HTML links to the corresponding events within the hacmp.out file.
• /var/hacmp/adm/history/cluster.mmddyyyy : This log file logs the daily cluster history.
•  /var/hacmp/clverify/clverify.log : This file contains the verbose messages output during verification.Cluster verification consists of a series of checks performed against various PowerHA SystemMirror configurations. Each check attempts to detect either a cluster consistency issue or an error. The messages output by the verification utility indicate where the error occurred (for example, the node, device, command, and so forth).

The post Log Files in PowerHA SystemMirror ( HACMP ) appeared first on web-manual.net.

On my first article on VIO server backup, I have explained how to “Backing up a VIO server or Creating a “nim_resources.tar” file using ‘backupios’ ” command, on this article we will see “Backing up VIOS using command backupios with -mksysb flag” which takes less time and space ..

Difference

When the  command backupios is used with -mksysb flag  is , the resources used by the installios command are not saved in the image. Therefore to restore a VIO server from this image can be used only with NIM.

Whereas Creating a “nim_resources.tar for Virtual I/O Server allows this backup can be reinstalled from the HMC using the installios command.

Procedure to run the command  backupios with -mksysb flag.

Task 1: Login with padmin priviledge to VIO server
Task 2: Change to root priviledge using command

Task 3: Create a mount directory where the backup image, .mksysb will be written to

Task 4: Mount a filesystem from the NIM master on the mount directory /vios01/backup on VIOS01

Task 5: Run exit to go back to the padmin privilege for running backupios command

Task 6. Run the backupios command with the –file option. Make sure to specify the path to the mounted directory

Enjoy backupios with -mksysb flag command !!!!!!

The post Backup VIOS using command backupios with -mksysb flag appeared first on web-manual.net.

On this article we have just published the VIOS vs AIX matrix or VIOS vs AIX OS level .. I find this matrix very helpful while making decision to upgrade VIO of my client environment  .. Please have a look and let me know for any confusion.

To determine AIX level , run the command  :

To determine VIOS level  :
1) Login in to the VIO partition using the user “padmin”

2) Issue the ioslevel command:

The post VIOS vs AIX matrix appeared first on web-manual.net.

Concurrent status not showing on lspv output: Cluster vg problem
As we know that if we run the lspv command to list the lun’s the HACMP cluster VG should show as concurrent on both nodes.When I check the HACMP cluster volume groups found that cllsvg not showing a volume group which Should be on cluster.
The problems will be :
1. Can’t visible newly added luns on the pair node with the clustervg.
2. Can’t extend the file system using cluster commands.
3. Fail over may not happen due to the cluster vg problem
In my case one node in cluster showing as concurrent and the pair node didn’t show it
On Node 1: sapP11datavg is showing as concurrent.

On Node 2: sapP11datavg is not showing as concurrent. It understands like a local vg

The cllsvg command is not showing the volume group sapP11datavg

To solve this problem : from lspv output on node1 , note down the major number for it

The major number is 102 for the vg sapP11datavg

Now on the node2, the vg is shows like the local volume group

We can find the major number as different for this vg in respect to node1

Bring down the resource group, cluster on the problem node 1^st

Type or select values in entry fields.
Press Enter AFTER making all desired changes.
[Entry Fields]

* Stop now, on system restart or both now +
Stop Cluster Services on these nodes [node2]
BROADCAST cluster shutdown? true
* Select an Action on Resource Groups Bring Resource Groups Offline +

Repeat the same step for the other node
Before doing learning import on the problem node, we notice the total number of luns is 68

Now do the learning import with concurrent option for the problem vg on the problem node side

After doing import, now shows as 72 luns as total for the sapP11datavg

Check the major number for the vg on both nodes

Do export on the problem node

Now importvg with concurrent mode and along with the same node1’s major number and the problem is solved now.

Now Start the cluster services and resource group

Check the cluster stable state

Proceed the same on another node

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Sometime you need to download the all pages of a particular directory. You can do it with FTP but what if you are not the valid user to do so.

Let’s Try This to download entire website:

-m, –mirror
shortcut for -N -r -l inf –no-remove-listing.

-r, –recursive
Specify recursive download.
-l, –level=NUMBER
Maximum recursion depth (inf or 0 for infinite).
-k, –convert-links
Make links in downloaded HTML point to local files.
-p, –page-requisites
Get all images, etc. needed to display HTML page.

The web is so vulnerable because of its open nature. But there are are ways to protect this. Open developer uses robot.txt file to stop download from the server. In such case you might trick the command in this way…

There are lot more option to use with wget read the man page for other options available.

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Artha is the off-lilne English Dictionary for users. It is an Open Source cross-platform English thesaurus that works completely off-line and is based on WordNet(A superb database).

If you are using Debian or its derivatives like Ubuntu, Kubuntu, Xubuntu, etc. then Artha is already available in the repositories. You can install it by:

Both Debian and Ubuntu has the version 1.0.2 of Artha in their respective repositories; so by installing using the above command, you’ll not get the latest 1.0.3 release. Hence if you prefer to have the latest version, there are two options available ~ PPA and direct .deb download.

1. PPA
Artha now has a PPA in launchpad. This can be added to your system’s repository sources through

This will prompt you to accept adding the PPA’s keys to your system. Accept it by pressing RETURN. Once this is done, update the package data and install Artha.

DEB

Alternatively, you can also download the deb file below for your architecture and install the same (instructions below). This is more of a manual method and the PPA method is encouraged over this one, since this method lacks automatic updation of the package, should there be a newer version of Artha.

Architecture Binary
i386  artha_1.0.3-1_i386.deb
AMD64 artha_1.0.3-1_amd64.deb

The post English Dictionary for Ubuntu – Artha appeared first on web-manual.net.

This article explain How to run remote command on VIO server . Few days back , I came across a situation where I had to check IBM Virtual I/O server version ( ioslevel ) on more than 200 servers. Then only I came to know that lot experienced people as well as myself do not know how to run command remotely on a Restricted Shell as we all know VIO server is supplied with Restricted Korn Shell and we login with primary administrator user id padmin .

Restricted shell : 

After logging in with padmin user id on a VIO server, you will be placed into a restricted Korn shell. The restricted Korn shell works in the same way as a standard Korn shell, except that you cannot perform the following:

• Change the current working directory
• Set the value of the SHELL, ENV, or PATH variables
• Specify the path name of the command that contains a forward slash (/)
• Redirect output of a command using any of the following characters: >, >|, <>, >>

As a result of these restrictions, you cannot execute commands that are not accessible to your PATH variables. In addition, these restrictions prevent you from sending command output directly to a file. Instead, command output can be piped to the tee command.

Work Around :

Secure Shell (SSH) is shipped with the Virtual I/O Server. Hence, scripts and commands can run remotely after an exchange of SSH keys .

Step 1 ) Generate the public ssh key on the remote system. To know how to generate ssh key in details, please visit my earlier article SSH to a server without password for Admin Ease

Step 2 ) Transfer the ssh key to the Virtual I/O Server. The transfer can be done using File Transfer Protocol (FTP).

Step 3 ) On the Virtual I/O Server, type the following command to copy the public key to the .ssh directory:

Step 4) Run any command from remote server with ioscli flag as below example . The command might prompts for a password for first time if it has not already been added as a known host.
Example :

Then I have wrote a script vioversion.sh on our NIM server to ran remotely above command on more 200 servers and my work was finished in 10 mins .. and rest of the day I was free to roam

for i in `cat /tmp/vioversion/$input`
do
echo “————————————————————————–”
echo ” IOSLEVEL on VIO $i ”
ssh padmin@$i ioscli ioslevel > /tmp/vioversion/vioversion.out
echo “————————————————————————–”
done

This script will put the out put in a file with name vioversion.out under /tmp/vioversion/.. Have fun and  run remote command on VIO server!!!

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