[Bug 959724] [NEW] Limit boot loader installation target

[Barry Warsaw]

Public bug reported:

In bug 933433 the user attempted to install the boot loader on an XFS
file system, which does not reserve space.  This causes a follow-on bug
that will be fixed separately as part of bug 933433.  However, in
general, cjwatson says:


<cjwatson> barry: firstly, the user was allowed to select an XFS partition as
           a target for boot loader installation (impossible since XFS doesn't
           reserve space)  [17:22]

<cjwatson> actually should not be allowed to select anything that doesn't
           reserve embedding space
<cjwatson> that can be data-mined from the grub2 source


<cjwatson> 'grep reserved_first_sector grub-core/fs/*'  [17:29]
<cjwatson> if there's a filesystem in the target partition, it must be one of
           those with = 1 there

** Affects: ubiquity (Ubuntu)
     Importance: Medium
         Status: Triaged

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https://bugs.launchpad.net/bugs/959724

Title:
  Limit boot loader installation target

Status in “ubiquity” package in Ubuntu:
  Triaged

Bug description:
  In bug 933433 the user attempted to install the boot loader on an XFS
  file system, which does not reserve space.  This causes a follow-on
  bug that will be fixed separately as part of bug 933433.  However, in
  general, cjwatson says:

  
  <cjwatson> barry: firstly, the user was allowed to select an XFS partition as
             a target for boot loader installation (impossible since XFS doesn't
             reserve space)  [17:22]

  <cjwatson> actually should not be allowed to select anything that doesn't
             reserve embedding space
  <cjwatson> that can be data-mined from the grub2 source

  
  <cjwatson> 'grep reserved_first_sector grub-core/fs/*'  [17:29]
  <cjwatson> if there's a filesystem in the target partition, it must be one of
             those with = 1 there

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