#6532 BLOC Update1: SD Card Corruption

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#6532: SD Card Corruption
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  Reporter:  haralds  |       Owner:  dsaxena          
      Type:  defect   |      Status:  assigned         
  Priority:  blocker  |   Milestone:  Update1.1 (8.1.1)
 Component:  kernel   |     Version:                   
Resolution:           |    Keywords:  release?         
  Verified:  0        |    Blocking:  6893             
 Blockedby:           |  
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Changes (by dsaxena):

 * cc: cjb (added)


Comment:

 Replying to [comment:25 PierreOssman]:
 > The only safe way of avoiding data corruption is to make sure that you
 do not suspend with dirty filesystems. Either umount them before suspend,
 or fix up the filesystems to do this automatically on suspend (i.e.
 improve the kernel).

 Chris, how hard would it be as a short-term measure to have our userspace
 either unmount the SD card or force a sync to the SD card before suspend?

 > Replying to [comment:24 dsaxena]:
 > >
 > > CONFIG_UNSAFE_RESUME is disabled on the Ubuntu 2.6.24 kernel and
 enabled on the OLPC 2.6.22 kernel, so it does not seem related to the
 corruption issue.
 >
 > The OLPC has a hardware bug that makes the system behave as if
 MMC_UNSAFE_RESUME is always disabled.

 Do you/we have any details/documentation on this?

 Thanks for your input Pierre.

-- 
Ticket URL: <http://dev.laptop.org/ticket/6532#comment:26>
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