#6532 BLOC 8.2.0 (: SD Card Corruption

Zarro Boogs per Child bugtracker at laptop.org
Wed Jul 2 21:37:45 EDT 2008


#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?            
Next_action:  never set  |    Verified:  0                   
  Blockedby:             |    Blocking:  6893                
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Comment(by mikus):

 This seems as good a place as any to post the following:

 Was running 708 on my G1G1, with '/etc/ohm/inhibit-idle-suspend' present.
 Further, the XO was running a background computation, which used __100%__
 of all available CPU cycles.  I was EXTREMELY surprised to see the "power"
 light blinking -- the XO had suspended.

 At the time, I had two removable USB storage devices plugged in, in
 addition to my "permanent" SD card.  One of those removable storage
 devices was a hard disk, which provided disk storage for the computation
 and also provided a swap partition for the XO to use.  In addition, at the
 time the suspend occurred, I had a 'rsync' operation going on between nand
 and the other removable storage device - an USB flash drive.  When I
 'resumed' (by touching the "power" button), the 'rsync' went into an error
 loop and the computation task closed because it could not checkpoint,
 while the primary text console (alt-ctl-F1) showed scads of errors
 regarding the system swap device.
  [[br]]

 My reason for posting this is to point out that not only SD cards are
 affected by this problem -- hard disks are as well.
  [[br]]

 [And why didn't the CPU being 100% busy prevent this suspend ?]

-- 
Ticket URL: <http://dev.laptop.org/ticket/6532#comment:54>
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