Dave, If I knew I would tell you, which is the problem. :-)
I see a good follow-up about device links, but probably more is lurking. I generally don't trust anything I haven't tested myself, and I know that the manual process hasn't always worked. I think Scott Dickson's instructions would have a higher success rate. Maybe this is why the request to get Flash working with ZFS has been a high priority with our customers. Cindy ----- Original Message ----- From: Dave Ringkor <no-re...@opensolaris.org> Date: Friday, June 19, 2009 8:20 pm Subject: Re: [zfs-discuss] Server Cloning With ZFS? To: zfs-discuss@opensolaris.org > 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 > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
