Mailing List Archive: MythTV: Users

Jamu running on which backend?

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ianforde at gmail

Nov 7, 2009, 4:20 PM

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Jamu running on which backend?

So knowing that I have CentOS 5 running on my only backend, and Jamu
won't run on there due to python version issues, I was wondering if
setting up tunerless Ubuntu VM backend for Jamu to run in would get
around the issue.

According to the wiki, "Jamu can only be run on a MythTV backend. If you
have multiple MythTV backends you will need to run Jamu on each of
them." After looking through the mailing list archives, and browsing
ticket 6440, it seems to me that:

1) I only need to run it on all backends if they have separate storage
directories and I'm not using NFS between them for that purpose.
2) As long as I have everything NFS-mounted on said Ubuntu VM, I should
be able to use the "-N" flag just fine, yes?

Of course, the fact that it would most likely be a tunerless backend may
cause some issues...

-I

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r.d.vaughan at rogers

Nov 7, 2009, 6:54 PM

Post #2 of 2 (290 views)
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Re: Jamu running on which backend? [In reply to]

Ian,
You just won the novel Jamu question of the week award ;)

I assume you are meaning to use the "Ubuntu VM backend" to just run Jamu
and it would never be used as an backend for a front end to access
MythVideo. Your scheme may work if the following is true.

1) The Myth DB, videos and graphics directories are not within the VM
backend
2) The VM backend has the same hostname as your real backend. This would
be a requirement specific to storage groups. See below.

There is the question of whether you are using storage groups or not. In
the case that you use storage groups for Videos and all graphics
directories the MythVideo records will store the hostname and relative
paths to the videos and graphics files. This may give you some future
flexibility.

If you use absolute paths like those defined in the FE settings then the
full path is stored in the video record and the hostname is irrelevant.

No matter which way you go the MythVideo record updated by the VM
backend must be transparently the same as what jamu would have produced
on the real backend, otherise this will not work.

If you do this please, please back up your database first. This has
definitely not been tried before.

Good Luck

Doug
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