VXVM in POWERHA 6.1 Post: 302910967

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Operating Systems AIX VXVM in POWERHA 6.1 Post 302910967 by bakunin on Tuesday 29th of July 2014 10:41:44 AM

07-29-2014

Registered User

HACMP does not deal with disks (disk devices), it only deals with volume groups. Basically, a "resource group" in HACMP is:

- a bundle of filesystems, organized in certain volume groups
- a number of processes to be started/stopped
- an (several) IP addresses to serve up data/services

When a resource group starts: the VGs are activated (varyonvg), the respective filesystems are mounted, the processes are started (via start-scripts) and the IP-address is activated on some interface.

When the resource group stops this process is reversed: the IP address is deleted from the interface, the processes are stopped (via stop-scripts) and the filesystems are unmounted, then the VGs are deactivated.

How and from what devices these VGs are built is transparent for HACMP. The only requirement is that HACMP is able to activate the VGs from every cluster node.

I hope this helps.

bakunin

bakunin

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all-swaps

all-swaps(7)						 Miscellaneous Information Manual					      all-swaps(7)

NAME

       all-swaps - event signalling that all swap partitions have been activated

SYNOPSIS

       all-swaps [ENV]...

DESCRIPTION

       The  all-swaps  event  is  generated  by the mountall(8) daemon after it has activated all swap partitions listed in fstab(5).  mountall(8)
       emits this event as an informational signal, services and tasks started or stopped by this event will do so in parallel with  other  activ-
       ity.

       When this event occurs, common filesystems such as /usr may not be mounted.

EXAMPLE

       A service that wishes to be running once swap partitions are activated might use:

	      start on all-swaps

SEE ALSO

       mounting(7) mounted(7) virtual-filesystems(7) local-filesystems(7) remote-filesystems(7) filesystem(7)

mountall							    2009-12-21							      all-swaps(7)

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