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61  Linux Stuff / Kernel / Re: mmc support in 2.6.37 and 2.6.38 on: August 28, 2011, 07:20:11 AM
I understand the problem, because I have it too. Allow me to try again to state the problem:

The SDHC slot seems only to be detected by the kernel if it has card inserted at boot time.
That would be a different problem then.  The OP had the root file-system on an SD card, so would (presumably) have had an SD card inserted at boot time.
62  General Category / General Discussion / Re: Write to USB Port from Shell (DreamPlug) on: August 23, 2011, 04:40:14 PM
To talk to a USB device you probably need to talk using the USB protocol (see libusb for details).
I've never come across anything that lets you treat it as a simple character-based device.
63  General Category / General Discussion / Re: Need help booting with new root (SD card) on: August 23, 2011, 04:36:01 PM
Quote
ok, so switch to bootargs "root=/dev/mmcblk0p1":
...
How can I make it find my SD card and boot with my new root ?
You need to have mmcinit in your boot command.  It's not just the kernel that needs to see it, Uboot needs to see it too in order to read the kernel from it.
64  Linux Stuff / Kernel / Re: 3.0.3 new kernel available on: August 18, 2011, 05:00:53 PM
I'm guessing there must have been some sort of issue with 3.0.2, since it was only out for a day or so before they released 3.0.3.
Possibly not.  3.0.3 was released in front of a live audience at LinuxCon.
65  Hardware and U-Boot firmware / U-Boot stuff / Re: DENX Open Das U-Boot on SheevaPlug on: August 05, 2011, 11:02:02 AM
After a ubifs is mounted...
...but first it needs to be created as a file system.   I don't think I can just create the device then run "mkfs -t ubi".
66  Hardware and U-Boot firmware / U-Boot stuff / Re: DENX Open Das U-Boot on SheevaPlug on: August 04, 2011, 05:34:07 PM
You don't need a separate filesystem for /boot.
I do if I want the rest of the files to be on an external USB drive through a hub.  And I don't want things like /var to be on a solid-state device that can wear out (I've had an SDHC card get to the read-only state, which is why I moved to the USB drive).
Quote
It seems to load quicker from ubifs.
Yes, ubifs is quicker the jffs2 (apparently) but the older U-boots don't have any ubiload command.
67  Hardware and U-Boot firmware / U-Boot stuff / Re: DENX Open Das U-Boot on SheevaPlug on: August 03, 2011, 05:14:08 PM
I'm curious, why do you need a separate ubifs partition for /boot?
Everything else is on an external USB drive, but there are/were/could be problems trying to boot from USB (which is through a hub), so at the moment I have /boot left on the SDHC card.
But that seems a bit of a waste of a 16GB SDHC card (which also juts out from the box), so if I were able to use the NAND instead (with ubifs - not jffs2) I'd free up the SDHC card and make some use of the internal NAND.
68  Hardware and U-Boot firmware / U-Boot stuff / Re: DENX Open Das U-Boot on SheevaPlug on: August 02, 2011, 03:47:10 PM
I can now boot from a ubifs partition on MTD NAND.
I don't suppose anyone has any details on how to create/setup a file-system on NAND?

In particular, how to create (say) 100MB and 400MB ubifs partitions, put /boot onto the former and leave the latter as and empty but mountable (writeable) file-system?
69  Linux Stuff / Kernel / Re: 3.0 new kernel available on: July 23, 2011, 05:12:22 PM
The mirror may not always be current.
It hasn't shown an update for a while.   It hasn't yet got any of the 2.6.39.x series.
70  Linux Stuff / General Linux questions / Re: 1TB drive - can only access a small portion on: July 02, 2011, 05:46:11 PM
This seems to confirm it is not the WB MyBook 1TB drive but something else in my configuration.
What is that configuration.
Where have you mounted the drive? ((Evidence?)
You mention network access - what sort of network access?
What happens if you access the (mounted) file-system directly from the Plug?
71  Linux Stuff / Kernel / Re: 2.6.39.2 new kernel available on: June 30, 2011, 03:18:55 PM
2.6.39.2 is now available (has been for a few days now, didn't want to mention it earlier since I've been fiddling with my boot sequence).
It hasn't made it to the mirror yet.
72  Linux Stuff / General Linux questions / Re: 1TB drive - can only access a small portion on: June 28, 2011, 05:05:15 PM
Ah - you said a USB drive.  IIRC a MyBook is weird and has 4 partitions (and a specific driver for Windows?).  So you need to do multiple LUN scanning.
e.g.
http://www.linuxquestions.org/questions/linux-hardware-18/problems-with-wd-my-book-1tb-external-drive-564130/
http://www.linuxforums.org/forum/red-hat-fedora-linux/104572-mount-wd-my-book-usb-drive.html
73  General Category / Application ideas and development Q/A / Re: Sheevaplug: Send Email when process is not running on: June 23, 2011, 05:32:23 PM
Assuming you have mail setup to work...

Run a cron job everty 5 mins that:

Checks the process is running. 
If not:
   if there is no NO_PROCESS file, send a mail
   touch a NO_PROCESS file
if it is there
   delete any NO_PROCESS file.
74  Hardware and U-Boot firmware / Hardware / Re: Maximum size of SD card for DreamPlug on: June 13, 2011, 05:03:04 PM
Thanks a lot, Spinfex.  I will get a 32GB SDHC and test if it is readable from DreamPlug.  I didn't know that there is an SDXC which can be up to 2TB.  I haven't seen it sold anywhere.
Part of the spec for SDXC is that the file-system has to be xfat(?), which is a proprietary Microsoft file-system.  There are, I believe, some digital camera that support it.
75  Hardware and U-Boot firmware / Hardware / Re: New plug - D2 on: May 29, 2011, 05:05:31 PM
Here you go:

<http://www.newegg.com/Product/Product.aspx?Item=N82E16813154020&cm_re=e350-_-13-154-020-_-Product>

You do have to add a ram stick and maybe a USB stick wireless solution if you need that
And a case, and a power supply???
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