The device tree for your 250 might be different, so you may need to
hack the path_to_inst and /devices and /dev to make it boot sucessfully.
On Jun 20, 2009, at 10:18 AM, Dave Ringkor <no-re...@opensolaris.org>
wrote:
Cindy, my question is about what "system specific info" is
maintained that would need to be changed? To take my example, my
E450, "homer", has disks that are failing and it's a big clunky
server anyway, and management wants to decommission it. But we have
an old 220R racked up doing nothing, and it's not scheduled for
disposal.
What would be wrong with this:
1) Create a recursive snapshot of the root pool on homer.
2) zfs send this snapshot to a file on some NFS server.
3) Boot my 220R (same architecture as the E450) into single user
mode from a DVD.
4) Create a zpool on the 220R's local disks.
5) zfs receive the snapshot created in step 2 to the new pool.
6) Set the bootfs property.
7) Reboot the 220R.
Now my 220R comes up as "homer", with its IP address, users, root
pool filesystems, any software that was installed in the old homer's
root pool, etc.
Since ZFS filesystems don't care about the underlying disk structure
-- they only care about the pool, and I've already created a pool
for them on the 220R using the disks it has, there shouldn't be any
storage-type "system specific into" to change, right? And sure, the
220R might have a different number and speed of CPUs, and more or
less RAM than the E450 had. But when you upgrade a server in place
you don't have to manually configure the CPUs or RAM, and how is
this different?
The only thing I can think of that I might need to change, in order
to bring up my 220R and have it "be" homer, is the network
interfaces, from hme to bge or whatever. And that's a simple config
setting.
I don't care about Flash. Actually, if you wanted to provision new
servers based on a golden image like you can with Flash, couldn't
you just take a recursive snapshot of a zpool as above, "receive" it
in an empty zpool on another server, set your bootfs, and do a sys-
unconfig?
So my big question is, with a server on ZFS root, what "system
specific info" would still need to be changed?
--
This message posted from opensolaris.org
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