https://www.youtube.com/watch?v=sRM6ooDd6yQ
Agree with Andre and Douglas has a point
By going into maintenance mode (if you can afford the down time), you can see the impact would have, i.e. once you assign the disks,
does it see the complete aggregate or partial, can you bring it online, is your vol0 still the valid root volume (not that it should change)
The trickiest part is to ensure that ONTAP and other firmware are at the same level in both corresponding systems, for WAFL consistency
Happy going
From: toasters-bounces@teaparty.net [mailto:toasters-bounces@teaparty.net]
On Behalf Of "André M. Clark"
Sent: 02 February 2016 18:48
To: Douglas Siggins <siggins@gmail.com>
Cc: Martin <martin@leggatt.me.uk>; toasters@teaparty.net
Subject: Re: Moving shelves with root aggr and root vol (7-mode) from one Filer to another
I suggest renaming aggr0 to a different aggregate name before you shut down on the old system. Likewise for vol0. Additionally, because I’m sure you’ll want to have the CIFS shares and exports on the destination system, save copies of
the /etc/cifsconfg_share.cfg and /etc/exports files so you can easily add to the respective files on the destination controller.
That looks about right, although I would just reassign in maint mode on the new head. I am not sure if its possible to offline an aggr while its volumes are online (save yourself the trouble).
Check the versions of 7-mode of both heads, its probably a good idea to have them be the same versions (or very close)!
On Tue, Feb 2, 2016 at 8:56 AM, Martin <martin@leggatt.me.uk> wrote:
Hi,
I have one 7-mode Filer that I will be decommissioning which has data on it
I need to migrate to another 7-mode Filer. We don't have space to mirror
the data to the new Filer, want to reuse the shelves on the new Filer and
this is a quicker cut over.
The four DS4243 shelves have a single aggregate (aggr0) with various volumes
on it (exported via NFS) including the root volume for the controller
(vol0).
I found the KB on moving shelves and aggregates between controllers but it
doesn't mention what to do about a Filer that has vol0 and root aggr on the
shelves.
My plan is:
1. Disable disk auto assign on both source and destination Filer on both
controllers
options disk.auto_assign off
1. Reboot the source controller into maintenance mode
2. Offline aggr0
aggr offline aggr0
3. Uknown the disks on the shelves on the source controller
disk assign disk_name -s unowned -f
4. Shutdown the Source Filer and power off along with shelves
4. Power down the destination Filer and add SAS card to new Filer (not
enough SAS ports for new loop)
5. Physically moves shelves from source Filer to destination Filer
6. Cable shelves and change shelf IDs along with a powercycle to ensure
shelf IDs don't conflict
7. Assign the disks on the new Filer
disk assign disk_name
8. As the aggregate is aggr0 and new Filer also has aggr0 it gets renamed to
aggr0(1) and foreign
9. Check the status of the new aggregate
aggr status aggr_name
10. Rename the new aggregate from aggr0(1) to aggr1
aggr rename aggr0(1) aggr1
11. Online the aggregate on the destination Filer as it is longer labelled
as foreign aggregate.
aggr online aggr1
12. Check the aggregate status on the destination Filer
aggr status aggr1
13. Export the volumes on the destination Filer via /etc/exports and
exportfs -r
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