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| Microdrive http://forum.linhes.org/viewtopic.php?f=2&t=4242 |
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| Author: | aventius [ Fri Apr 22, 2005 11:16 am ] |
| Post subject: | Microdrive |
Has anyone built a knoppmyth setup using a 2 GB microdrive as the only drive on the device. I plan on mounting a network drive for all the media content and storage. Will the microdrive work well? I'm looking at it for low power and low heat specs because I want to run my setup without a fan. |
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| Author: | burgessms [ Fri Apr 22, 2005 11:33 am ] |
| Post subject: | |
I'd think 2G would fill up rather quickly. Is there a typo I missed ? It's likely quite slow, and not too usefull. How much space does a half hour show take up ?? |
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| Author: | brendan [ Fri Apr 22, 2005 12:01 pm ] |
| Post subject: | Re: Microdrive |
Well, since an hour of video takes up at least 1.1GB, and the standard knoppmyth install sets aside...18GB(?) for live tv/recording cache space, I do not think it will work well. -brendan |
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| Author: | aventius [ Fri Apr 22, 2005 12:06 pm ] |
| Post subject: | Update |
Ok... I obviously was not very clear in what I asked. Allow me to restate. I want to put a 2 or 4 GB Microdrive on my mythtv box. This drive will hold the operating system only. Now, I have another server with 800 GB of space. I want to mount that drive over NFS to the set-top box and use that to store all the media. Understand me now? |
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| Author: | brendan [ Fri Apr 22, 2005 2:21 pm ] |
| Post subject: | Re: Update |
I still think the restrictions on the /cache volume will prove to be too much (too small and local or too slow and over the network), since that's supposed to be a fast-access volume for spooling recordings. My suggestion would be to create a master backend and then use a harddisk-less Knoppmyth CD-booted system as the frontend in the area you want to keep quiet. -brendan |
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| Author: | Liv2Cod [ Fri Apr 22, 2005 5:52 pm ] |
| Post subject: | |
Couldn't you boot off the microdrive (or compact flash for that matter) instead of the CDROM? That'd make a nice installation. Fast, quiet booting and you wouldn't have to dig out the boot CD every time you start the frontend (presuming the CD drive does double-duty for DVD and CD media for the frontend.) |
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| Author: | cesman [ Sat Apr 23, 2005 3:24 pm ] |
| Post subject: | |
You should be able to install to a 2 Gig microdrive. You'll want to do a manaul install... Just create / and a swap (75 megs). |
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| Author: | aventius [ Mon Apr 25, 2005 4:00 pm ] |
| Post subject: | Thats what I thought |
Liv2Cod wrote: Couldn't you boot off the microdrive (or compact flash for that matter) instead of the CDROM? That'd make a nice installation. Fast, quiet booting and you wouldn't have to dig out the boot CD every time you start the frontend (presuming the CD drive does double-duty for DVD and CD media for the frontend.)
Yeah, thats what I was thinking... all the cache would be on the network NFS server. I don't want to boot from a slot noisy disc. So looks... like manual install with a 75mb swap. Kickass... Thanks |
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| Author: | brendan [ Mon Apr 25, 2005 5:58 pm ] |
| Post subject: | Re: Thats what I thought |
aventius wrote: Yeah, thats what I was thinking... all the cache would be on the network NFS server. I don't want to boot from a slot noisy disc.
So looks... like manual install with a 75mb swap. Kickass... Thanks I still suspect you're going to have problems recording on the backend if its /cache volume is a network resource and not local. FWIW, a bit of hdparm magic made my boot HD pretty darn quiet. -brendan |
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| Author: | willem [ Tue Apr 26, 2005 12:29 am ] |
| Post subject: | |
You could even consider not using a disk at all. Initially I had a R4V5 backend / frontend in my living room. At some point I transferred the harddisk and tuner card to a different machine and disabled the frontend by booting into runlevel 3. Then I read through various docs on the Internet regarding diskless setups. I used busybox to create a lean and mean root filesystem and mount /usr (ro) and /myth (rw) over NFS. I use the kernel / modules that shipped with R4V5. Since I kept all the configuration files of the backend / frontend install in the living room I had a working lircd.conf (homebrew receiver), XF86Config-4, asound.state and knew which modules had to be loaded to support the hardware. The motherboard and NIC I use don't support PXE booting, but that was solved by creating a EtherBoot boot ROM. You need plenty of RAM for such a setup. I think 512 MB is the minimum since it cannot swap to disk. All in all a very interesting project. Learnt a lot from it and the reward is a very quiet PC in the living room. I copied this setup and now I can also boot my laptop over the network thus creating an extra frontend leaving the contents of the (work)laptop harddisk intact. |
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