#6442 NORM Never A: Machine doesn't shut down after filling NAND

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#6442: Machine doesn't shut down after filling NAND
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 Reporter:  cscott  |       Owner:  jg                               
     Type:  defect  |      Status:  new                              
 Priority:  normal  |   Milestone:  Never Assigned                   
Component:  distro  |     Version:  Development build as of this date
 Keywords:          |    Verified:  0                                
 Blocking:          |   Blockedby:                                   
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 From private mail:
 {{{---}}}
 Subject: Does update.1-691 have the olpcrd fix for full filesystems?

 This fix doesn't have a separate trac bug; it's in the comments in
 http://dev.laptop.org/ticket/5719.

 http://dev.laptop.org/ticket/5317 tracks the real bug, but that trac
 entry got sidelined into a JFFS2 enforce-free-space patch that didn't
 make update.1.

 The small "readlink" patch that Scott made to olpcrd makes the system
 bootable when the filesystem is full.  I looked in the ramdisk in
 update.1-691, and it appears to be there.  But I want to make 1000%
 sure, since this is a bug that makes the system very brick-like if not
 fixed.

 I am currently filling my NAND and will report back whether the machine
 will boot when I'm done.  Hmm.  I filled it, until it refused to create
 new files, or even new filenames.  Then I ended that shell, which was the
 only Activity running, and hit "Reboot" in the donut.

 It tried to shut down, froze the screen with the UL warnings, and
 never did shut down.  ==> BUG! <== I let it sit that way for at least
 10 minutes.

 I powered it off manually, powered up manually.  There's a long delay
 after "hello (children of the) world" and the jffs xattr spam message.
 Several minutes, at least.  Probably scanning the whole filesystem,
 slowly.

 It booted all the way up into Sugar.  Selecting "About this XO"
 produces "Build: update.1 691; Firmware: Not available; Serial Number:
 Not available".  This appears to be because /ofw didn't get correctly
 mounted; df -h shows:
 {{{
  Filesystem  ...
  mtd0      1.0G 1014M  11M 99% /
  none      1.0G 1014M  11M 99% /ofw
  tmpfs     117M   44K 117M  1% /dev/shm
 }}}
 But it comes up, gets a terminal, and can become root (which would let
 the filesystem full problem get corrected).  Bravo.
 {{{---}}}

 This trac bug is for the 'shutdown doesn't complete when NAND is full'
 issue.  I believe I've seen shutdown fail in other circumstances; the
 summary of this bug may have to change when we get to the root of the
 problem.

-- 
Ticket URL: <http://dev.laptop.org/ticket/6442>
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