Jim Klimov wrote:
Hello all,
I am currently helping evacuate data/OS from a legacy system
that ran Solaris 10u3 (11/06) in a VM until recently - hypervisor
host died - with tasks stuffed into a number of local zones, in
whole roots over dedicated UFS SVM "partitions". The customer
has decided to migrate the services ASAP into another VM on
another box, which currently has Windows and can run VirtualBox,
by salvaging as many bytes as possible from the old installation.
Possibly, later a new dedicated hypervisor will be provided
(likely ESX, or native OI+zones+VirtualBox, maybe SmartOS+KVM...)
Our foreseeable options are to migrate into a new VM:
1) as is, rsync'ing the data from the old VM or even importing
its disk image if that works
2) into solaris 10u8 "golden image" and possibly updating the
OS parts for the local zones in the process (detact/attach -u)
3) into OI and stuff old tasks "as is" into solaris10 branded
zones; maybe later migrate at least some tasks to native
OI zones.
I am partial to the OI variant, as it gives more flexibility
with networking setup and other bonuses. What I am not sure about
is the current state of affairs with the solaris10 zones:
* is it enough to copy the zoneroot (whole root zones) and just
run it? (the global zone was nothing but a zonehoster)
Detach then attach does work.
* are there limitations to the solaris 10 release which must be
imported into a branded zone? I know that there may be problems
due to mismatch of ZFS between kernel and zone, but it is not
planned to delegate datasets into these zones at the moment.
It's been a while since I last did this, but I'm sure there's a minimum
patch level (update 9?) required.
I imported the zones onto an update 9 VM first.
* is it possible to "attach -u" or liveupgrade local zones that
are branded in OI (i.e. import sol10u3 and turn it into sol10u8)?
I'm sure -u isn't supported for branded zones, you have to do this on
Solaris 10 first.
--
Ian.
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