VxVm

Veritas for bigenners

VERITAS Volume Manager software is an advance system-level disk and storage array solution that alleviates downtime during system maintenance by enabling easy, online disk administration and configuration. By providing a logical volume management layer, VERITAS Volume Manager overcomes the physical restriction imposed by hardware disk devices. let we start with feature of VxVM

 

Bring a Disk into veritas Control

we will see how to scan the disks and bringing the disks in to veritas volume manager control and various disks  operations. Instead of digging in to theory we will concentrate more on piratical. Here we will see about how to scan new disk in vxvm,disk naming convention and how to bring it in veritas control.Adding disk in to diskgroup ,we will see in diskgroup operation

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Brief Abt VxVm

The Veritas Volume Manager (VVM or VxVM) is a proprietary logical volume manager from Veritas (which was part of Symantec until January 2016). It is available for Windows, AIX, Solaris, Linux, and HP-UX. A modified version is bundled with HP-UX as its built-in volume manager. It offers volume management and Multipath I/O functionalities (when used with Veritas Dynamic Multi-Pathing feature).

 

Vxtasking

The vxtask utility performs basic administrative operations on VERITAS Volume Manager (VxVM) tasks that are running on the system. Operations include listing tasks (subject to filtering), modifying the state of a task (aborting, pausing, resuming), and modifying the rate of progress of a task. VERITAS Volume Manager Tasks represent long-term operations in progress on the system. Every task provides the time the operation started, the size and progress of the operation, and the operation’s state and rate of progress (throttle).

Step by Step Installation of VxVm

installation of  VXVM on Solaris node and initialization issues with vxvm after the package installation. Unlike other packages installation,we have installer available in storage foundation bundle to minimize the complex.So no need to use pkgadd commands unless until there is an issue with the installer.Here is step by step guide for vxvm installation with putty output. Environment: Operating system:Solaris 10 Storage Foundation:6.0 you

States of Plexes

Plex states reflect whether or not plexes are complete and are consistent copies (mirrors) of the volume contents. VxVM utilities automatically maintain the plex state. However, if a volume should not be written to because there are changes to that volume and if a plex is associated with that volume, you can modify the state of the plex. For example, if a disk with a particular plex located on it begins to fail, you can temporarily disable that plex.
A plex does not have to be associated with a volume. A plex can be created with the vxmake plex command and be attached to a volume later.

Root Mirror Breaking 

This procedure is designed to preserve the root mirror disk before applying patches or upgrading. It provides an efficient path for recovery if the upgrade or patch installation is unsuccessful

VxVm Failure / Issues

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 be disconnected to the server.However you should know how to fix these rare issues in veritas volume manager.

Disk Repairs

This article contains a procedure for troubleshooting the “failed,” or “failed was” status, as reported by vxdisk.
A “failed” status is a record of a disk that is no longer accessible. This is often caused by sustained I/O errors to the disk that prevents it from being read by the operating system (OS). It may also be the result of corruption within the Veritas private region.
The private region is the portion of the disk where Veritas stores records about the disk group, such as disks, volumes, subdisks and plexes. This can be contrasted with the public region, which contains the actual volumes, including user data.

Veritas Dynamic Multipathing (VxDMP)

Veritas Dynamic Multi-Pathing (DMP) provides the multi-pathing capability to the native devices on the system. DMP creates DMP metadevices (DMP nodes) to represent all the device e paths to the same physical LUN.

Veritas Disk Replacement

In this post we will discussing about most common issue of replacing the faulty VxVM disk in UNIX server.
Every Unix System Admin should gone through this situation where they removing/replacing the faulty VxVM disk. Here we can see the procedure for replacing the faulty disk through “vxdiskadm” command, however we can also do the same in command line mode which is preferred.
 Volboot Issues : 

Server is suddenly rebooted or intentionally rebooted after the server came up fine Volume Manager does not started automatically or Volume Manager not starting  during boot up after installation, we have some do some workaround need to follow some below steps…