[augeas-devel] Re: [Augeas] #32: save fails on bindmounted files

[Augeas]

#32: save fails on bindmounted files
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  Reporter:  apevec  |       Owner:  lutter  
      Type:  defect  |      Status:  assigned
  Priority:  major   |   Milestone:  next    
 Component:  Augeas  |     Version:  0.3.4   
Resolution:          |    Keywords:          
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Changes (by lutter):

  * status:  new => assigned

Comment:

 Without having traced through the code, my guess is that this happens when
 augeas tries to rename the temporary file (/etc/default/test123.augnew)
 that it saved into to the final destination (/etc/default/test123)

 Augeas assumes that two files that are known to be in the same directory
 must be on the same device, too, and therefore expects rename(2) to work.
 The man page for rename says that EBUSY can be returned if the source or
 the target are a mount point, which is the issue here.

 I am not sure how to fix that, especially since I want the change from old
 file contents to new file contents to remain atomic, i.e. avoid the danger
 that anybody might read a partially updated file. I'll have to dig into
 that some more.

-- 
Ticket URL: <https://fedorahosted.org/augeas/ticket/32#comment:3>
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