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Author Topic: Dreamplug - First look inside the next evolution in plug computing  (Read 53393 times)

Kuttel

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Re: Dreamplug - First look inside the next evolution in plug computing
« Reply #15 on: 01 March 2011, 04:45:10 pm »

Thank you for the infos. If newit offers debian it's jut perfect for me.
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tazpa

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Re: Dreamplug - First look inside the next evolution in plug computing
« Reply #16 on: 08 March 2011, 09:23:23 am »

Quote
no-one is proposing that UBIFS would be a suitable choice
UBI/UBIFS is specifically designed for use on, and is therefore most suitable for flash.
Quote
SD or micro SD card
Dont be deceived by  the interface, these are flash devices.

They are flash devices but the interface hides it. SD cards cannot be used with flash filesystems (UBIFS).
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sfzhi

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Re: Dreamplug - First look inside the next evolution in plug computing
« Reply #17 on: 08 March 2011, 03:59:15 pm »

Dont be deceived by  the interface, these are flash devices.
They are flash devices but the interface hides it. SD cards cannot be used with flash filesystems (UBIFS).
As far as Linux is concerned, there is no such thing as "flash device". There are block devices, such as hard disks, USB sticks, memory cards, etc., and there are MTD (Memory Technology Devices), such as NAND flash in GuruPlug (which DreamPlug does not have). Block devices are meant to be used with "traditional" file systems (ext2, ext3, fat, etc.), while MTD have to be used with "special" flash-aware file systems (such as JFFS2 or UBIFS).
So, indeed, it does not matter that SD-card has flash memory internally, it is just a block device.
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Number_Six

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Re: Dreamplug - First look inside the next evolution in plug computing
« Reply #18 on: 08 March 2011, 06:53:53 pm »

Hi,

Newbie question (have searched the FAQs first!)

Have just ordered a Dreamplug to replace my nslu2 which is booting from and running Debian Lenny from a USB hard drive.

Will it be possible to do similar (boot and run debian) from USB hard drive rather than booting from the internal Micro SD?

Cheers

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NewIT_Marcus

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Re: Dreamplug - First look inside the next evolution in plug computing
« Reply #19 on: 08 March 2011, 09:55:17 pm »

Will it be possible to do similar (boot and run debian) from USB hard drive rather than booting from the internal Micro SD?

James managed to get our Dreamplug to boot with kernel from microSD card, and rootfs on an external device. To have the kernel also load from external device would require changes to U-Boot.
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NewITMalcolm

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Re: Dreamplug - First look inside the next evolution in plug computing
« Reply #20 on: 08 March 2011, 11:51:39 pm »

I am fairly sure that it did let me load a kernel from a Usb device it was just the SD card where that was not possible.
Don't forget that you will need a JTAG Module to change the boot options.

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NewITJames

Number_Six

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Re: Dreamplug - First look inside the next evolution in plug computing
« Reply #21 on: 09 March 2011, 07:39:30 pm »

Thanks for your replies. However, I've found this site which should help me do what I want:

http://www.computingplugs.com/index.php/Booting_entirely_off_an_external_USB_device

One more question - Do i really need a JTAG module? Seems I should be able to access u-boot from a mini USB cable and using PuTTY in serial mode?

Cheers
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clemep8

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Re: Dreamplug - First look inside the next evolution in plug computing
« Reply #22 on: 20 March 2011, 08:39:42 pm »

Hi, just got one of these. For the experts out there, what is the easiest way to login to a dreamplug? I can get an ssh prompt over eth0 -- are there default credentials for these things (or any way to get login-less terminal)? If not, can I use a USB cable to get a serial console? If I must, I can purchase JTAG, but am looking for simpler option. Don't really need to reinstall or anything, just looking to do minor mods and use it as a router/firewall.

Thanks
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mdawkins

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Re: Dreamplug - First look inside the next evolution in plug computing
« Reply #23 on: 30 March 2011, 05:54:13 pm »

Hi I just got my dreamplug last night. It runs ubuntu and I figured out how to log in via [email protected], but I seem to be experiencing stability problems. The ssh connection to the plug doesn't seem to be staying up for very long. Maybe an hour at best?

Anyone else having these sorts of problems?

A reset seems to be the only way to get it to come back up...

and no I don't have a jtag.
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mdawkins

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Re: Dreamplug - First look inside the next evolution in plug computing
« Reply #24 on: 31 March 2011, 04:14:02 am »

so looking at the /var/log/messages file I get this:

Mar 30 11:29:22 ubuntu kernel: sysctl net.netfilter.nf_conntrack_acct=1 to enable it.
Mar 30 11:29:22 ubuntu udhcpd[2156]: udhcpd (v0.9.9-pre) started
Mar 30 11:29:23 ubuntu kernel: Bluetooth: vendor=0x2df, device=0x9105, class=255, fn=2
Mar 30 11:49:17 ubuntu -- MARK --
Mar 30 12:09:17 ubuntu -- MARK --
Mar 30 12:29:17 ubuntu -- MARK --
Mar 30 12:49:17 ubuntu -- MARK --
.
.
.

Until the next reboot. I also just got a vim segfault trying to highlight the text. I'm starting to believe that this is a bad install or the HW is faulty.


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mdawkins

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Re: Dreamplug - First look inside the next evolution in plug computing
« Reply #25 on: 01 April 2011, 02:52:31 am »

Ok I figured this out and this is a word to the wise.

The Access Point uap0 is set to 192.168.1.1

If your router already uses this set of IP address, you will run into a conflict and the internet connection will go.

Two things you can do.

change the default ip address in /root/init_setup.sh

and you can take down the AP if you are purely not interested in it.
ifconfig uap0 down
and comment out the call to the init_setup.sh in /etc/rc.local
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