[Bug 1620525] [NEW] sbuild with overlayfs fails in yakkety

[Dimitri John Ledkov]

Public bug reported:

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.

** Affects: dpkg (Ubuntu)
     Importance: Critical
         Status: New

** Affects: linux (Ubuntu)
     Importance: Critical
         Status: New

** Affects: dpkg (Ubuntu Yakkety)
     Importance: Critical
         Status: New

** Affects: linux (Ubuntu Yakkety)
     Importance: Critical
         Status: New

** Affects: dpkg (Debian)
     Importance: Unknown
         Status: Unknown

** Also affects: linux (Ubuntu)
   Importance: Undecided
       Status: New

** Bug watch added: Debian Bug tracker #836211
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=836211

** Also affects: dpkg (Debian) via
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=836211
   Importance: Unknown
       Status: Unknown

** Also affects: dpkg (Ubuntu Yakkety)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Yakkety)
   Importance: Undecided
       Status: New

** Changed in: dpkg (Ubuntu Yakkety)
   Importance: Undecided => Critical

** Changed in: linux (Ubuntu Yakkety)
   Importance: Undecided => Critical

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

Title:
  sbuild with overlayfs fails in yakkety

Status in dpkg package in Ubuntu:
  New
Status in linux package in Ubuntu:
  New
Status in dpkg source package in Yakkety:
  New
Status in linux source package in Yakkety:
  New
Status in dpkg package in Debian:
  Unknown

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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