#6532 BLOC 8.2.0 (: SD Card Corruption

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#6532: SD Card Corruption
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   Reporter:  haralds      |       Owner:  dsaxena                      
       Type:  defect       |      Status:  reopened                     
   Priority:  blocker      |   Milestone:  8.2.0 (was Update.2)         
  Component:  kernel       |     Version:                               
 Resolution:               |    Keywords:  release? 8.1.2:? blocks:8.1.2
Next_action:  communicate  |    Verified:  0                            
  Blockedby:               |    Blocking:  6893                         
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Comment(by djones):

 It appears that whatever is causing this is also biting the OpenMoko
 people.  (Either that or it's a huge coincidence.)  Exact same symptoms:
 block 0 getting wiped, mmcblk0 coming back as mmcblk1 on resume, etc.

 Andy Green on the Openmoko Community list:

 "This is ultimately a resume race of some kind, the VFS layer corruption
 and taking a whiz on block 0 (noticeable as it is) is downstream of
 whatever is truly responsible..."

 See:

 http://lists.openmoko.org/pipermail/community/2008-July/023787.html

 and the rest of that thread.

 They are working very hard on this problem, "intensely" is how someone
 described it.  Although most XO users currently aren't using SD cards and
 many people have considered the problem as somewhat incidental to OLPC's
 core mission, the OpenMoko community considers the SD card as essential.
 Also, OpenMoko isn't a non-profit, and will shift every engineer it can
 find onto this kind of blocker.  They are in a real hurry to fix this.

 They are now aware of OLPC ticket #6532 and are reading every word.  It's
 now a race to see who understands the problem first, and who can find a
 good fix first.

 Cross-fertilization between these two FOSS projects would be a really good
 idea.

-- 
Ticket URL: <http://dev.laptop.org/ticket/6532#comment:63>
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