[Bug 1620525] Re: sbuild with overlayfs fails in yakkety

[Joseph Salisbury]

Did this issue start happening after an update/upgrade? Was there a
kernel version where you were not having this particular problem? This
will help determine if the problem you are seeing is the result of a
regression, and when this regression was introduced.   If this is a
regression, we can perform a kernel bisect to identify the commit that
introduced the problem.


** Tags added: kernel-da-key

** Changed in: dpkg (Ubuntu Yakkety)
       Status: New => Triaged

** Changed in: dpkg (Ubuntu Yakkety)
       Status: Triaged => Confirmed

** Changed in: linux (Ubuntu Yakkety)
       Status: Incomplete => Triaged

** Tags added: yakkety

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https://bugs.launchpad.net/bugs/1620525

Title:
  sbuild with overlayfs fails in yakkety

Status in dpkg package in Ubuntu:
  Confirmed
Status in linux package in Ubuntu:
  Triaged
Status in dpkg source package in Yakkety:
  Confirmed
Status in linux source package in Yakkety:
  Triaged
Status in dpkg package in Debian:
  New

Bug description:
  overlayfs does not support renaming directories when the directories
  live in the lower filesystem:

   * Directory renames only allowed on "pure upper" (already created on
   * upper filesystem, never copied up).  Directories which are on lower or
   * are merged may not be renamed.  For these -EXDEV is returned and
   * userspace has to deal with it.  This means, when copying up a
   * directory we can rely on it and ancestors being stable.

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