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[ts-7000] XNAND file system

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Subject: [ts-7000] XNAND file system
From: Jim Ham <>
Date: Fri, 18 Nov 2011 13:09:49 -0800
I'd like to poll everyone who has experience with the xnand fs used on 
some of the Technologic boards. Is anyone using this in the field? I'd 
like to see a short answer from everyone who has experience - Yes, we're 
using it; No, we're not; We're just now trying it out; etc.

I ask as I have an image that works well booting from an SD card. I 
moved the image to the flash (xnand) and almost immediately started 
getting file corruption. At this point it's unknown where the fault 
lies. I've has two massive file system failures in the one day where I 
was using xnand. This is after weeks of development using the SDcard. 
The hardware is a TS-4700 attached to a TS-8390. The system includes a 
UPS that keeps the power on for approximately 10 seconds after the 
system shuts down with halt.

I have to say that I am using a custom kernel (based on the ts released 
kernel dated 9/1/11), and a custom root file system generated by 
buildroot. Almost all utilities are busybox, including init and halt.

Support, especially Mark, has been very helpful. He has already 
identified one potential problem where halt on my system shuts down all 
processes including the xnand user-space utilities. It seems that the 
Debian images the TS supplies have hooks to make sure that halt excludes 
the xnand processes.

Regards,

Jim Ham

-- 
Porcine Associates LLC
244 O'Connor St.
Menlo Park, CA 94025
USA
+1(650)326-2669 fax +1(650)326-1071


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