[mythtv-users] Moving storage and database to new machine?

[Nick Rout]

On Oct 2, 2012 8:01 AM, "Magnus Larsson" <magnus at vista.se> wrote:
>
> Hi!
>
>
> Thanks for your advice! Yes, I meant complete backup of database,
however, I was not aware of the scripts described on the wiki page (
http://www.mythtv.org/wiki/Database_Backup_and_Restore).
>
> And the idea to physically move the drives is appreciated - had not
thought of that.
>
> One more question: I understand how I manage the hostname, and it sounds
like a good idea to use the old hostnamne (I know how to manage that) - but:
>
> What about the path to the recordings themselves? I mean, how are they
identified in the database - does that depend on the actual path in the
file-system? I would like to use another file system logic in the new one,
as the old one is not logical (due to incremental growth over a few years).
Will that work, or do I need to consider this specifically? (I am quite
ignorant about how the mythtv database actually works....).
>
> I hope this makes sense. Grateful for any comments on it. I am getting
this process started tomorrow

as long as a recording is in a storage group it will be found. you need to
add your new directories to sg setup in mythtv-setup. And remove the
redundant ones which will have come across with the database restore.

>
> Best,
>
>
> Magnus
>
>
>
> 2012-10-01 01:14, Nick Rout skrev:
>
>> On Mon, Oct 1, 2012 at 11:15 AM, Michael T. Dean
>> <mtdean at thirdcontact.com> wrote:
>>>
>>> On 09/30/2012 08:08 AM, Magnus Larsson wrote:
>>>>
>>>> Hi!
>>>>
>>>> I am setting up a brand new backend for my Mythtv (all in ubuntu
12.04),
>>>> and need to move the database and existing recordings to this new
machine. I
>>>> read in the Wiki on how to manage storage devices in the storage
groups, but
>>>> am not clear on how to best move betwen different physical machines.
>>>>
>>>> My plan is to export - import the database and simply do a rsync of the
>>>> recordings to the new maching. The paths in the new machine will be
slightly
>>>> different (bigger, raid5, as opposed to smaller and no-raid
previously).
>>>>
>>>> Any advice before I start and make troubles for myself?
>>>
>>>
>>> If by "export - import" you mean, do a complete backup of the database (
>>> http://www.mythtv.org/wiki/Database_Backup_and_Restore ) and then do a
full
>>> restore of that backup on the new machine, replacing whatever database
may
>>> be there (
>>>
http://www.mythtv.org/wiki/Database_Backup_and_Restore#Replacing_an_existing_database
>>> ), that's the proper procedure for handling the database.  As Nick
>>> mentioned, make sure you consider host names--the easiest approach is
to use
>>> the exact same host name for the new system as you used on the old,
since
>>> all your configuration is stored in a profile based on the system's host
>>> name.
>>>
>>> And, IMHO, rsync is the best tool for moving the recordings themselves
>>> (using --progress, especially, makes it user-friendly--not to mention
the
>>> fact that you can stop/restart it as necessary).
>>
>> My standard rsync options are -avPp - I've been doing it that way so
>> long I cannot recall what they each do, but I get progress reported
>> back to me!
>>
>> I assume you are doing rsync over your lan. It may be quicker to
>> remove the storage drives from the old machine and plug them in to the
>> new machine. The transfer will be quicker, and you can still use rsync
>> so that if you have to stop for some reason, you can carry on later.
>>
>>
>>
>>> Mike
>>>
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>>> mythtv-users at mythtv.org
>>> http://www.mythtv.org/mailman/listinfo/mythtv-users
>>
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>
>
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