[OpenIndiana-discuss] data on rpool - Bad idea?

[Jacob Ritorto]

hm, I've had no problems doing an rpool import to another system by simply
running
zpool import <poolid> <newpoolname>

If you blindly just import by name as "rpool," then yeah, it's a clash.

On Sat, Feb 7, 2015 at 8:55 AM, Doug Hughes <doug at will.to> wrote:

> The reason that data volumes on rpool is generally not a good idea is for
> recoverability. You can take all of the disks of a given pool and move them
> to another system, except rpool. rpool defines the system itself, so data
> volumes there are tied to that system. Data volumes in any other pool can
> move between systems very easily, which is great when you have certain
> classes of hardware failures, or you want to upgrade your system, or
> something similar. The data is thus independent of the current disposition
> of the OS.
>
> At some point later on, you'll likely regret having done it.
>
> Sent from my android device.
>
> -----Original Message-----
> From: Harry Putnam <reader at newsguy.com>
> To: openindiana-discuss at openindiana.org
> Sent: Sat, 07 Feb 2015 7:24
> Subject: [OpenIndiana-discuss] data on rpool - Bad idea?
>
> I've read that it is a bad idea to have datasets on the same disc
> that rpool is on.  I'm not sure why that is so.
>
> In my current situation I need more space but to rig up my
> `HP xw8600 workstation' with more disc space will require getting a cage
> and some new discs, not to mention the huffing and puffing necessary
> to get it all installed and usable.
>
> When I installed oi on this hardware I thought it was a smart idea to
> use 2 older 250 GB discs for a 2 disc mirrored setup of rpool.  And a
> pair of 1tb discs for 2disc mirror of datasets.
>
> At that time I hadn't really realized what it would take to add
> discs.
>
> But of course I'm now running out of space... and still not flush
> enough to pop for the $400 or so to add a cage and 4 2-3 tb discs.
>
> However I do have 2 1tb discs laying unused.
>
> So, (finally cutting to chase) how bad of an idea would it be to use
> those two 1tb discs for a mirrored rpool and whatever data.
>
> I would gain about 800-850 GB of mirrored data space but it would
> involve putting data on same discs and rpool.
>
> (I'll leave for another thread to discuss how to get rpool onto the new
> discs in the most painless manner)
>
> So, what are your best thoughts on employing the two 1tb discs as
> described above?
>
>
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