Solaris - physical to virtual migration on the same M5000 Post: 302558225

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Operating Systems Solaris Solaris - physical to virtual migration on the same M5000 Post 302558225 by hartz on Friday 23rd of September 2011 05:57:22 AM

09-23-2011

Registered User

Q-E-D

Hello nm-longnumber.

It is easier than you think so .... Just do it :-)

What exactly is Veritas SAN filesystems? Are you using vxfs and/or vxvm ?

If your applications and data is on external disk then this will realy be quite easy.

Steps:
Create a flar for each domain. Google how-to-do-it
1. make a text file of the file systems to exclude (everything on external disk, as well as the path to where you store the flar image).
2. run the flarcreate command to create the archive.

shut down the second domain.
Add the systemboards to the ACL for the first domain.
add the boards to the domain.
restart the first domain.
check the hardware - you should see double the disks, cpus, memory, IO controllers. (cfgadm is your friend)
Import the vxfs file systems from the other host.
create a new data structure / file system layout for your zones.

This is where it becomes difficult. No solution seems perfect. Do you use snapshot file systems?
Do you have to have raw device access in the zones?
Do you use ZFS quotas?
Should you pool all the disks into a single pool and let ZFS manage space across everything in a single pool?

Unless you want to do something specific, steer clear of raw device allocations. Mount the file systems in the global one. use lofs to re-mount them into the zones.

Create your zones.
Do your resource management the way you want.
boot up the zones and test.

You can get fancy - minimize some downtime by not killing the second domain at the start. In stead you share the disks via NFS from the second domain to the first, create the zone for domain 2, stop the apps in the second domain, start them in the domain-2 zone, create the zone for domain-1, move the apps from global to zone, etc. It becomes a bit difficult only about deciding exactly where you rename the first domain to have a different name from the new zone which takes over its workload. Use sys-unconfig, reboot the domain and give the zone the name of the first domain (sys-unconfig the zone and reboot the zone). You move the IO controllers and CPU resources once you are sure that all is working, then re-configure the domain-2-zone to use the disks directly in stead of via NFS.

With more detail you can plan and perform this without issues. Just accept that you will access file systems indirectly. :-)

hartz

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install-solaris

install-solaris(1M)                                                                                                            install-solaris(1M)

NAME

       install-solaris - install the Solaris operating system

SYNOPSIS

       install-solaris

       install-solaris  invokes  the  Solaris  Install  program. Depending on graphical capability and available memory at the time of invocation,
       install-solaris invokes either a text-based installer or a graphical installer.

       The following minimum requirements for physical memory dictate which features are available during installation:

       For SPARC machines:

       128 MB

           Minimum physical memory for all installation types

       128 MB

           Minimum physical memory required for windowing system

       384 MB

           Minimum physical memory required for graphical-based installation

       For x86 machines:

       256 MB

           Minimum physical memory for all installation types

       256 MB

           Minimum physical memory required for windowing system

       512 MB

           Minimum physical memory required for graphical-based installation

       In some cases, even if the minimum physical memory is present, available virtual memory after system startup can limit the number  of  fea-
       tures available.

       install-solaris  exists  only  on  the Solaris installation media (CD or DVD) and should be invoked only from there. Refer to the  for more
       details.

       install-solaris allows installation of the operating system onto any standalone system. install-solaris loads the software available on the
       installation media. Refer to the  for disk space requirements.

       Refer to the  for more information on the various menus and selections.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcdrom  (Solaris instal-  |
       |                             |lation media)                |
       +-----------------------------+-----------------------------+
       |Interface Stability          |Evolving                     |
       +-----------------------------+-----------------------------+

       pkginfo(1), install(1M), pkgadd(1M), attributes(5)

       It is advisable to exit install-solaris by means of the exit options in the install-solaris menus.

                                                                    23 Sep 2005                                                install-solaris(1M)