In Unix administration, everyone wants to be expert on any of the cluster technologies. Especially on veritas cluster due to its market capitalization.But not every body will get the opportunity to work on it since VCS will be running on critical environment. Then how to learn ? Just reading the text books and attending 5 days training […]
Veritas
Installation of veritas cluster and volume manager-SFHA
In this post we will see how to install storage foundation high availability packages on two servers using the installer on vmware Solaris guest operating systems.This installation same on actual Solaris physical servers and Linux servers. The simple installer will help you what product you want to install on the servers. If you want to install veritas cluster server along with veritas volume […]
How to add new filesystem in VCS cluster ?
How to add a new filesystem on Veritas Cluster? Once the filesystem is provisioned, we will be adding it in vfstab/fstab to mount if it’s a non-cluster filesystem. On Cluster nodes, Most of the application filesystem will be managed under cluster to mount the filesystem. This will ensure that filesystem will be mounted during the […]
Veritas cluster concepts
VCS Basics A single VCS cluster consists of multiple systems connected in various combinations to shared storage devices. VCS monitors and controls applications running in the cluster, and restarts applications in response to a variety of hardware or software faults. Client applications continue operation with little or no downtime. Client workstations receive service over the […]
How to fix the corrupted VXFS Filesystem with Symantec help
Recently i have faced strange issue in HP-UX v11.31 with VXVM 5.0 . When we tried to extend one of the file system,vxresize command returns the following error messages. UX:vxfs fsadm: ERROR: V-3-20295: device record checksum is invalidUX:vxfs fsadm: ERROR: V-3-20291: could not initialize devicesVxVM vxresize ERROR V-5-1-7514 Problem running fsadm command for volume test5, in […]
How to use the mirror VXVM volume for backout reason
Normally Unix admin will come across the root volume back-out.Here we are going to see how to perform data volume back-out on veritas volume manager’s mirrored volume.For an example, database team wants to restore the DB but you want to preserve current copy of the volume before the restore starts.This can be done if you are using […]
veritas cluster-LLT configuration & Removing LLT links
In Veritas cluster, When you add or remove LLT links, you need not shut down GAB or the high availability daemon(HAD). Your changes will be taken effect immediately.But it will be lost on the next server reboot. To make your changes to persist, you have to update in /etc/llttab where all the cluster communications are […]
How to cleanup veritas volume manager device tree ?
In Solaris , Sometimes veritas volume manger device tree will be messed up with newly assigned LUNS and you have to perform the device tree cleanup in a order to fix the device tree mess up. Below are two options for resolving device tree inconsistencies in VXVM. The first option does not require a reboot. […]
VXVM Failures
we may very often to fight with volume issues in day to day UNIX administration. When its come to veritas volume manager,it will be very less compare to other volume mangers. In rare cases you may need to face such a issues due environment(Like SAN issue),volume may go in to I/O error state or LUN paths will […]
Solaris OS and veritas patching procedure with VCS
We have seen many post about Solaris 10 OS patching using Liveupgrade method.Here we are going to see traditional OS patching where your root filesystem is UFS.The setup which i took is some what complex one. Here the global zone is part of veritas cluster and couple of zones are controlled by VCS and one zone is non-cluster.Here the root […]