Re: [beagleboard] Contamination, SD or eMMC, Root Cause

2015-02-02 Thread vicrandp
Hi Robert Is there an image available for the debian ReadonlyRoot for Beaglebone Black? https://wiki.debian.org/ReadonlyRoot Thanks Vic On Friday, January 23, 2015 at 7:39:28 AM UTC-8, RobertCNelson wrote: On Fri, Jan 23, 2015 at 9:31 AM, toni incog toni@gmail.com javascript:

Re: [beagleboard] Contamination, SD or eMMC, Root Cause

2015-01-25 Thread toni incog
Interesting, I will (also) look into ro root solution, thanks! Can I conclude that: 1. journaling ext4 is not as robust as me thought it was only capable of restoring limited damage 2. Yanking power is corrupting the fs, *not* the eMMC. 3. and therefor we can repair the fs by reflash the eMMC

Re: [beagleboard] Contamination, SD or eMMC, Root Cause

2015-01-25 Thread vicrandp
Robert On Friday, January 23, 2015 at 7:39:28 AM UTC-8, RobertCNelson wrote: On Fri, Jan 23, 2015 at 9:31 AM, toni incog toni@gmail.com javascript: wrote: Sure, let's say just your latest greatest debian kernel 3.14 running headless doing nothing only being great? Still missing

Re: [beagleboard] Contamination, SD or eMMC, Root Cause

2015-01-23 Thread toni incog
Sure, let's say just your latest greatest debian kernel 3.14 running headless doing nothing only being great? Any experiences with broken eMMCs? How important is using a backup battery in a daily unclean power down situation. What's your feeling: days, weeks, months, years, decades? Hmmm, I

Re: [beagleboard] Contamination, SD or eMMC, Root Cause

2015-01-23 Thread toni incog
Assume you mean: ... without /un/mounting the drives under Linux. Is there any data (or guesses) on how many times I can power down without unmounting before the eMMC is going to the dodo? thx, Michiel On Thursday, January 22, 2015 at 8:24:44 PM UTC+1, Gerald wrote: Most common is powering

Re: [beagleboard] Contamination, SD or eMMC, Root Cause

2015-01-23 Thread Robert Nelson
On Fri, Jan 23, 2015 at 9:05 AM, toni incog toni.in...@gmail.com wrote: Assume you mean: ... without /un/mounting the drives under Linux. Is there any data (or guesses) on how many times I can power down without unmounting before the eMMC is going to the dodo? Well... This guess needs more

Re: [beagleboard] Contamination, SD or eMMC, Root Cause

2015-01-23 Thread Robert Nelson
On Fri, Jan 23, 2015 at 9:31 AM, toni incog toni.in...@gmail.com wrote: Sure, let's say just your latest greatest debian kernel 3.14 running headless doing nothing only being great? Still missing the point.. So in that case, you have ext4, and / mounted rw with noatime.. Let's say it's idle:

[beagleboard] Contamination, SD or eMMC, Root Cause

2015-01-22 Thread bgb123
Please reference paragraph 5.10 on p37 of BBB SRM. Does memory device contamination occur due to open files in the Linux OS, or due to improperly sequenced power to a memory devices inadvertently writing to a memory device? Thanks, Bruce -- For more options, visit

Re: [beagleboard] Contamination, SD or eMMC, Root Cause

2015-01-22 Thread Gerald Coley
Most common is powering off the board without mounting the drives under Linux. Gerald On Wed, Jan 21, 2015 at 3:00 PM, bgb...@gmail.com wrote: Please reference paragraph 5.10 on p37 of BBB SRM. Does memory device contamination occur due to open files in the Linux OS, or due to improperly