migrating zfs filesystems between machines. [Solaris]

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From: jay on 3 May 2010 18:13

On Apr 30, 4:27 pm, Ian Collins <ian-n...(a)hotmail.com> wrote:
> On 05/ 1/10 06:48 AM, jay wrote:
>
>
>
> > here's how it's supposed to work:
>
> > on the 1st machine:
> > zpool export ship
>
> > move the disk to the 2nd machine, and over there:
>
> > zpool import ship
>
> > i have this note from oracle support that says
> > you need the SUNWXCall cluster installed on both -- that is
> > the biggest cluster you can choose during
> > install (except maybe the one w/ 3rd party
> > drivers). any truth to this? unfortunately, i have
> > only one test machine. i have the developer cluster,
> > not the entire cluster. on the single machine, it works.
>
> > /etc/release sez: Solaris 10 5/09 s10s_u7wos_08
>
> I've never heard that one before. I've been swapping ZFS drives between
> machines sice ZFS first appeared.
>
> I assume your subject is misleading and you are moving a pool between
> systems.
>
> --
> Ian Collins

you're probably right. here's what i have.

creepy# zpool status
pool: rpool
state: ONLINE
scrub: resilver completed after 0h14m with 0 errors on Mon May 3
11:31:53 2010config:

NAME STATE READ WRITE CKSUM
rpool ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t0d0s0 ONLINE 0 0 0
c1t1d0s0 ONLINE 0 0 0 9.69G resilvered

errors: No known data errors

i wanted to demonstrate that i could pull c1t1d0 out and put it in
another system, get it mounted and use it. one use for this would be
in
disaster recovery. one machine melts, but the disks are okay. move
the disks from melted machine to a survivor, mount them up and apply
enough duct tape to get things going again.

if the disk is in a second pool i think that whole process is easier.
but i'm doing something wrong.
zpool detach rpool c1t1d0s0
isn't harmless -- it deletes some info on c1t1d0s0 about how it fit
into the mirror, do it no longer has the info it needs to do a
zpool import.

at least, so i think. thanks, BTW.

j.

From: jay on 3 May 2010 18:15

On Apr 30, 4:47 pm, "Richard B. Gilbert" <rgilber...(a)comcast.net>
wrote:
> Ian Collins wrote:
> > On 05/ 1/10 06:48 AM, jay wrote:
> >> here's how it's supposed to work:
>
> >> on the 1st machine:
> >> zpool export ship
>
> >> move the disk to the 2nd machine, and over there:
>
> >> zpool import ship
>
> >> i have this note from oracle support that says
> >> you need the SUNWXCall cluster installed on both -- that is
>
> TYPO ALERT!!!!!!! Believe that should read SUNWCXALL
>
> Dylsexia alert?? ;-)

you're correct. SUNWCXall. however, this/my claim that you need
SUNWCXall installed is losing credibility. Everyone is telling me
they've never heard of that. i believe them.

j.

From: Richard B. Gilbert on 4 May 2010 08:47

jay wrote:
> On Apr 30, 4:47 pm, "Richard B. Gilbert" <rgilber...(a)comcast.net>
> wrote:
>> Ian Collins wrote:
>>> On 05/ 1/10 06:48 AM, jay wrote:
>>>> here's how it's supposed to work:
>>>> on the 1st machine:
>>>> zpool export ship
>>>> move the disk to the 2nd machine, and over there:
>>>> zpool import ship
>>>> i have this note from oracle support that says
>>>> you need the SUNWXCall cluster installed on both -- that is
>> TYPO ALERT!!!!!!! Believe that should read SUNWCXALL
>>
>> Dylsexia alert?? ;-)
>
> you're correct. SUNWCXall. however, this/my claim that you need
> SUNWCXall installed is losing credibility. Everyone is telling me
> they've never heard of that. i believe them.
>
> j.

I'm sure there must be people who do "tailored" installations. I never
have. Even ten years ago, disk space was relatively cheap; certainly
cheaper than the several hours of my time it would have taken to do a
tailored installation and then, later, add pieces.

Adding "SUNWGLOTZ" requires not only installing it but also finding all
the the things it depends upon and then installing all those
dependencies as well! Then you must identify and install or reinstall
all the applicable patches. It can be done but doing it that way costs
far more in terms of my time and system down time than simply installing
everything to begin with!

From: Richard B. Gilbert on 4 May 2010 09:02

From: Doug McIntyre on 4 May 2010 13:12

"Richard B. Gilbert" <rgilbert88(a)comcast.net> writes:
>I'm sure there must be people who do "tailored" installations. I never
>have. Even ten years ago, disk space was relatively cheap; certainly
>cheaper than the several hours of my time it would have taken to do a
>tailored installation and then, later, add pieces.

>Adding "SUNWGLOTZ" requires not only installing it but also finding all
>the the things it depends upon and then installing all those
>dependencies as well! Then you must identify and install or reinstall
>all the applicable patches. It can be done but doing it that way costs
>far more in terms of my time and system down time than simply installing
>everything to begin with!

But if you have hundreds of servers that have no need of X and Gnome
and all that crud, and you need to do a patch cycle, its could save
you days of real work time not patching *everything* solaris would
install in a full install.

Also, some regulatory items are requiring things like single app on
single server, and tailoring just the enviornment for that app could
save you tons on audit time and again patch time. Audit time is expensive.

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