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mvi2005
 Post subject: SATA drive install
PostPosted: Fri Apr 29, 2005 3:43 pm 
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Joined: Fri Apr 29, 2005 3:34 pm
Posts: 2
I kno it has been previously posted but i have found no useful info in those posts. But does anyone out there know how to get the knoppmyth to install on a SATA drive without getting some 7 tokens needed error. Thanxs
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smashedhat
 Post subject:
PostPosted: Sat Apr 30, 2005 5:04 am 
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Posts: 7
Try the manual install section on this page, worked like a charm for me and I am hopeless at linux (but learning fast)

http://www.mysettopbox.tv/doc.html

you may need to change the hda3 etc for sda3
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mvi2005
 Post subject:
PostPosted: Wed May 04, 2005 1:08 pm 
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Posts: 2
thanxs but still no luck, can anyone out there help me. And ive done some research the knoppmyth ide=reverse command didnt help either.
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tjc
 Post subject:
PostPosted: Wed May 04, 2005 9:06 pm 
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Location: Arlington, MA
You may be SOL. There is a reason that PATA drives are still recommended for ease of installing KnoppMyth after all...
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Girkers
 Post subject:
PostPosted: Thu May 05, 2005 4:08 am 
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Location: Brisbane, Queensland, Australia
Think of your Knoppmyth box like a server:

Boot Drive = smallest PATA you can get your hands on
i.e. In Knoppmyth \boot; \cache; \swap

Data Drive = Biggest and fatest MF you can get your hands on (in a server this may be a RAID system)
i.e. In Knoppmyth \myth

This way you get the speed you need. :lol:

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Girkers
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tjc
 Post subject:
PostPosted: Thu May 05, 2005 6:48 am 
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Location: Arlington, MA
You don't need that much speed. Having done the math several times any modern HD that supports DMA will work. The bandwidth requirements are a small fraction of the sustained transfer speeds modern drives are capable of, the only issue is latency which is why you need DMA.
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Girkers
 Post subject:
PostPosted: Thu May 05, 2005 7:09 am 
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Posts: 1422
Location: Brisbane, Queensland, Australia
That is very true tjc, but what about multiple users accessing the drive. Also with a SATA drive you get less errors in tdata transfer thus reducing your latency as you don't need to reget data.

Just my thoughts on the matter. :)

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Girkers
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MisoSoup777
 Post subject:
PostPosted: Thu May 05, 2005 9:24 am 
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Joined: Sun May 23, 2004 1:50 pm
Posts: 78
Location: Palmdale, CA
I agree with this assessment. My box is settup with 3x250GB SATA drives in a RAID 5 array for /myth. /, /cache and /swap are on a PATA drive for ease of install and /myth/video and /myth/music are on part of the primary PATA and a second 120GB PATA that I had sitting around. In this environment, SATA is super easy to use (especially with R5) and very fast. My intention is to have this box service several frontends so less latency, more throughput = better...

Girkers wrote:
Think of your Knoppmyth box like a server:

Boot Drive = smallest PATA you can get your hands on
i.e. In Knoppmyth \boot; \cache; \swap

Data Drive = Biggest and fatest MF you can get your hands on (in a server this may be a RAID system)
i.e. In Knoppmyth \myth

This way you get the speed you need. :lol:
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tjc
 Post subject:
PostPosted: Thu May 05, 2005 8:11 pm 
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Joined: Thu Mar 25, 2004 11:00 am
Posts: 9551
Location: Arlington, MA
The speed difference is so big it really doesn't matter. Something else will almost certainly become the bottleneck first. My slowest HD is 50Mb/sec on buffered reads, for SDTV the default recording rate is roughly 0.6Mb/sec. Even if we figure writes are 4 times slower thats still like a factor of 20x... HDTV takes away some of that cushion but it's a BIG cushion.
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MisoSoup777
 Post subject:
PostPosted: Thu May 05, 2005 11:48 pm 
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Joined: Sun May 23, 2004 1:50 pm
Posts: 78
Location: Palmdale, CA
Ok, alright, you caught me... It's just cool to have an SATA RAID 5 array...

I admit it.
8)


tjc wrote:
The speed difference is so big it really doesn't matter. Something else will almost certainly become the bottleneck first. My slowest HD is 50Mb/sec on buffered reads, for SDTV the default recording rate is roughly 0.6Mb/sec. Even if we figure writes are 4 times slower thats still like a factor of 20x... HDTV takes away some of that cushion but it's a BIG cushion.
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connollyr12
 Post subject:
PostPosted: Wed Jun 22, 2005 12:32 pm 
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Posts: 57
just wanted to throw something in on this I have been able to get my maxtor 300g sata drive working using the maual install method but the problem i keep running into is that it list my drives in /etc/fstab as
sda1
sda5
sda6
sda7
this really seems to wreak havoc on my box and end up having to edit my fstab file to mount the drives correctly.
One not i am using a PCI card to connect the drive to the board
Anyone have any ideas why this might be?
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connollyr12
 Post subject:
PostPosted: Fri Jun 24, 2005 12:06 pm 
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Joined: Tue Jun 21, 2005 6:09 pm
Posts: 57
Any chance someone has seem this before
I am still trying to figure out why it renumbers the sata drives
sda1
sda5
sda6
sda7
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tjc
 Post subject:
PostPosted: Fri Jun 24, 2005 8:40 pm 
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Joined: Thu Mar 25, 2004 11:00 am
Posts: 9551
Location: Arlington, MA
Because the kernel treats them as pseudo-SCSI drives.

/dev/hda - IDE/ATA drives
/dev/sda - SCSI drives (also SATA, USB, Firewire, ...)
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ajh
PostPosted: Wed Jul 06, 2005 8:38 am 
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Joined: Sun Jun 26, 2005 2:33 pm
Posts: 6
Location: Menlo Park, CA US
I just added a 250GB Maxtor SATA drive to a system that had a single Seagate 160GB PATA drive. Previously the PATA drive was working fine, now it is stuck in PIO mode, not DMA. The SATA drive is fine.
PATA drive is /dev/hda, SATA drive is /dev/sda. Any ideas? Thanks.

Code:

root@mythtv:/home/heller# uname -a
Linux mythtv 2.6.9-chw-4 #1 SMP Fri Feb 4 20:15:03 EST 2005 i686 GNU/Linux

root@mythtv:/home/heller# hdparm -t /dev/hda

/dev/hda:
 Timing buffered disk reads:   12 MB in  3.32 seconds =   3.61 MB/sec

root@mythtv:/home/heller# hdparm -d 1 /dev/hda

/dev/hda:
 setting using_dma to 1 (on)
 HDIO_SET_DMA failed: Operation not permitted
 using_dma    =  0 (off)

root@mythtv:/home/heller# hdparm -t /dev/sda

/dev/sda:
 Timing buffered disk reads:  218 MB in  3.02 seconds =  72.27 MB/sec
BLKFLSBUF failed: Operation not supported
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Operation not supported

root@mythtv:/home/heller#

_________________
Aaron Heller <ajheller@gmail.com>
Menlo Park, CA US
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tjc
 Post subject:
PostPosted: Wed Jul 06, 2005 7:29 pm 
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Joined: Thu Mar 25, 2004 11:00 am
Posts: 9551
Location: Arlington, MA
Check your BIOS configuration...
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