[Bug 864262] Re: remounting filesystems hangs uninterruptibly if network filesystems are unavailable

[Stéphane Graber]

Was going to mark this Fix released (well, actually did) as friendly-
recovery now starts udev by default bringing up the network in quite a
few cases, but then I thought of desktop installs with Network Manager
where the network indeed won't be online at the time we call mountall
...

So keeping the bug open for now, will have to think about the best way
to deal with this ...

** Changed in: friendly-recovery (Ubuntu)
       Status: New => Fix Released

** Changed in: friendly-recovery (Ubuntu)
       Status: Fix Released => Triaged

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https://bugs.launchpad.net/bugs/864262

Title:
  remounting filesystems hangs uninterruptibly if network filesystems
  are unavailable

Status in “friendly-recovery” package in Ubuntu:
  Triaged

Bug description:
  The "mount filesystems" and "check filesystems" options work by
  calling mountall.  This is the correct thing to do; however, if there
  are filesystems listed in the fstab that are unavailable (for
  instance, because they're network filesystems and the network hasn't
  been brought up, or the server is down, or they refer to unavailable
  disks), mountall will hang *indefinitely* waiting for them to become
  available - particularly in the case of filesystems that it knows are
  network filesystems.

  This is not a problem when it happens during a normal boot, because
  mountall will continue to run in the background.  However, when
  mountall is run from friendly-recovery, it becomes the foregrounded
  console process and there's no way to reasonably interrupt this to
  return to the recovery menu - you effectively have to reboot to get
  back to the other recovery options (and probably use SysRq in the
  process if you want to actually ensure your rootfs gets cleanly
  unmounted).

  We probably need some improvements to the mountall interface to allow
  a "one-shot" approach to mounting network filesystems when called from
  friendly-recovery.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: friendly-recovery 0.2.18
  ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
  Uname: Linux 3.0.0-11-generic x86_64
  ApportVersion: 1.23-0ubuntu2
  Architecture: amd64
  Date: Sat Oct  1 12:29:46 2011
  InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
  PackageArchitecture: all
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: friendly-recovery
  UpgradeStatus: Upgraded to oneiric on 2011-09-23 (7 days ago)

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