RSINFOMINDS: 05/01/2012

About Us

RSInfoMinds, a web based IT Training and Consultancy firm. It is established with high dreams in training people in IT Infrastructure Field. We provide Online and Class Room training in various fields of IT Infrastructure Management.

Join Us: http://www.facebook.com/RSInfoMinds

Mail Us: rsinfominds@gmail.com

Twitter: @RSInfoMinds

We are specialized in the below courses:

Redhat Linux Admin Redhat Linux Cluster

Redhat Virutualization IBM AIX Admin

IBM AIX Virtualization IBM AIX Cluster

HP Unix Admin HP Unix Cluster

HP Unix Virtualization Shell Scripting

Veritas Volume Manager Veritas Cluster

Oracle Core DBA VMWare

We provide training in such a way, So that you get in depth knowledge on the Courses you look for.

And we ensure you are very confident from each and every Techincal aspect that the IT Industry needs and expects from you.

We also conduct Workshops on the latest technology and the real time faculties sharing their work experiences to make you the best.

Wednesday 23 May 2012

Hpunix Storage Troubleshooting Command

Hi All..The post mainly foucs on how to handle storage relelated problems from the Server End.

# cat /var/adm/syslog/syslog.log : Analyze the file to find what kind problem has been reported.

# ioscan -funC disk/tape : Command to check the status of the disk and tape and not the device is "no_hw" state.

# ioscan -funH : Command to check the status of the Hardware path from the syslog.log.

# ioscan -fun fc : Command to check the status of the FC HBA.

# fcmsutil /dev/fcd# : Command to check the status of the HBA. Status should be "online" not "Awaiting Link up"

# fcmsutil /dev/fcd# stat -s : Command to check the statistics of the FC HBA.

# fcmsutil /dev/fcd# get remote all : Command to get all the remote ports connected to this FC HBA.

Tuesday 8 May 2012

Multipath in Linux

We all know the concept of Multipathing, which is configured for redundancy purpose to ensure the L UN's from the Storage Team is always available at the server.

1) # multipath -l : Command to view the configured multipath devices.

2) # cd /proc/scsi : Location of the HBA file which contains the WWN Number. In Linux, the HBA files are stored as 0,1.... The same numbering notation reflects in the "multipath" output.

3) /etc/multipath.conf : Configuration file for multipath.

4) # multipathd -k : Command which opens the interactive console with the ">" prompt.

>show paths : Command shows all the configured multipaths.
>show maps : Command shows all mapping of LUN.

Sunday 6 May 2012

mksysb error while taking OS backup

# mksysb -vipX /file_system

The above is the command to take a backup of rootvg (Operating System) in AIX.

When the above command fails:

1) Need to check the size of the destination filesystem, which has to match the rootvg.

2) Need to check the # ulimit values.

3) Need to check the /etc/exclude.rootvg file.