Freeze The Veritas Cluster

Sometimes we have to do shutdown / restart the database in a cluster environment, there are several ways that make us not so sure. Or even if not careful will lead to a more complex problem again.

Here are steps to restart / shutdown the database in a cluster environment:

Freezing Veritas Cluster-group service to existing group:
#haconf -makerw
#hagrp -freeze Oracle-LDAPDB
#hagrp -freeze cvm
#hagrp -freeze vtape
#haconf –dump -makero

See whether the service group status was the Freeze
#hastatus –sum |grep G

(Restart / shutdown Oracle DB, or other actions)

To unfreeze Veritas Cluster-group service to existing group:
#haconf -makerw
#hagrp -unfreeze Oracle-LDAPDB
#hagrp -unfreeze cvm
#hagrp -unfreeze vtape
#haconf –dump -makero

Veritas Volume manager Command quick reference

Disk commands

Operation	Command	Example
Initialise Disk	vxdisksetup	vxdisksetup -i c1t9d0
Uninitialise Disks	vxdiskunsetup	vxdiskunsetup -C c1t9d0
List Disks	vxdisk list
List Disk Header	vxdisk list	vxdisk list disk01
List Disk Private Region	vxprivutil list	vxprivutil list /dev/rdsk/c1t9d0s2
Reserve a Disk	vxedit	vxedit -g my-dg set reserve=on my-disk

Disk Group commands

Operation	Command	Example
Create disk group	vxdg init	vxdg init my-dg disk01=c1t9d0
Remove disk group	vxdg destroy	vxdg destroy my-dg
Add disk	vxdg adddisk	vxdg -g my-dg adddisk disk02=c1t8d0
Remove disk	vxdg rmdisk	vxdg -g my-dg rmdisk disk02
Import diskgroup	vxdg import	vxdg import otherdg
Deport diskgroup	vxdg deport	vxdg deport my-dg
List diskgroups	vxdg list
List free space	vxdg free	vxdg -g my-dg free
List total free space	vxassist	vxassist -g my-dg maxsize layout=concat

Plex commands

peration	Command	Example
Create a plex	vxmake	vxmake -g my-dg plex my-plex sd=my-sd
Associate a plex	vxplex	vxplex -g my-dgatt my-vol my-plex
Dis-associate a plex	vxplex	vxplex -g my-dg dis my-plex
Attach a plex	vxplex	vxplex -g my-dg att my-vol my-plex
Detach a plex	vxplex	vxplex -g my-dg det my-plex
List Plexes	vxprint	vxprint -lp
Remove a plex	vxedit	vxedit -g my-dg rm my-plex

Subdisk Command

Operation	Command	Example
Create a subdisk	vxmake sd	vxmake -g my-dg my-sd disk1,1,5000
Remove subdisk	vxedit rm	vxedit -g my-dg rm my-sd
Display subdisk info	vxprint -st
Associate subdisk to plex	vxsd assoc	vxsd -g my-dg assoc my-plex my-sd
Disassociate subdisk	vxsd dis	vxsd -g my-dg dis my-sd

Volume commands

Operation	Command	Example
Create a volume	vxassist	vxassist -g my-dg make my-vol 1G
		vxassist make my-vol 1G layout=stripe
Delete a volume	vxedit	vxedit -g my-dg -r rm my-vol
Display volume info	vxprint	vxprint -g my-dg -vt
Display volume info	vxinfo	vxinfo -g my-dg my-vol
Resize a volume	vxassist	vxassist -g my-dg growto my-vol 2G
		vxassist -g my-dg growby my-vol 600M
Start a volume	vxvol	vxvol -g my-dg start my-vol
Stop a volume	vxvol	vxvol -g my-dg stop my-vol
Initialise a volume	vxvol	vxvol -g my-dg init active my-vol
Recover a volume	vxrecover	vxrecover -g my-dg my-vol
Mirror a volume	vxassist	vxassist -g my-dg mirror my-vol
Add log to a volume	vxassist	vxassist -g my-dg addlog my-vol
Snapshot a volume	vxassist	vxassist -g my-dg snapstart my-vol
		vxassist -g my-dg snapshot my-vol my-snap
Change volume layout	vxassist	vxassist -g my-dg relayout my-vol layout=stripe
Convert volume type	vxassist	vxassist -g my-dg convert my-vol layout=stripe-mirror

Source : users.telenet.be

Hitachi Data Systems Introduces New Agile Cloud Solutions

Hitachi Data Systems Corporation announced the new portfolio of agile cloud technologies to accelerate and simplify the adoption of enterprise cloud computing environments. Specifically, the portfolio delivers the industry’s most integrated set of computing resources to create a single pool of virtualized block, file and content storage to support the diverse uses that are evolving in cloud computing today, and enables organizations to adopt cloud services at their own pace. As part of the cloud offerings, Hitachi Data Systems also unveiled the new Hitachi Content Platform that provides essential security, reliability and multitenancy for cloud infrastructures.


Hitachi Cloud Customer Benefits
With sophisticated storage virtualization, Hitachi Data Systems enables a secure, multitenant environment that ensures privacy among various constituents within a shared infrastructure that can be managed from a single command suite. Supporting a variety of protocols and third party technology, enterprises and service providers can further leverage existing investments in hardware and software and allow legacy devices to inherit cloud attributes, thereby preventing cloud from becoming just another silo and eliminating the need for a complete refresh or update of hardware and software or the need to rewrite applications. As a result, Hitachi Data Systems cloud solutions enable enterprise customers to choose the best possible technologies to address their challenges at their desired pace and budget resources. By offering an integrated set of cloud solutions, Hitachi Data Systems can deliver an agile cloud infrastructure that empowers customers to look at their existing IT infrastructure in new ways, enabling them to:

• Provide efficient IT management and increase productivity through automation
• Meet changing performance, availability and storage needs
• Ensure security in a shared environment
• Cost effectively improve data protection
• Make information easy to locate and use, anywhere, at any time

For more information about Hitachi Data Systems Agile Cloud can be found at this datasheest link.

Source : www.hds.com