[Bug 802626] Re: vgchange may deadlock in initramfs when VG present that's not used for rootfs

[Steve Langasek]

James,

I don't believe that's true.  If the rootfs is in the same VG, there
should be no possibility of udev being stopped in the initramfs prior to
the dependent event making its way through the system, because without
those events the rootfs can't be mounted at all.  And certainly, root-
on-LVM has been 100% reliable for me here.  I think you should file a
separate bug for the issue you're seeing.

** Summary changed:

- vgchange may deadlock in initramfs when VG present
+ vgchange may deadlock in initramfs when VG present that's not used for rootfs

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https://bugs.launchpad.net/bugs/802626

Title:
  vgchange may deadlock in initramfs when VG present that's not used for
  rootfs

Status in “lvm2” package in Ubuntu:
  Triaged
Status in “udev” package in Ubuntu:
  Confirmed
Status in “lvm2” source package in Oneiric:
  Triaged
Status in “udev” source package in Oneiric:
  Confirmed

Bug description:
  The system is now unable to boot.
  I had to boot on previous kernel 3.0.0.
  Symptoms are boot freezes. When debugging, issuing a vgscan works ok.
  doing the vgchange -a y just hangs. I need to reboot the system afterwards.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: lvm2 2.02.66-4ubuntu2
  ProcVersionSignature: Ubuntu 3.0-0.1-generic 3.0.0-rc2
  Uname: Linux 3.0-0-generic x86_64
  Architecture: amd64
  Date: Mon Jun 27 18:15:46 2011
  ProcEnviron:
   LANGUAGE=fr_FR:en
   PATH=(custom, user)
   LANG=fr_FR.utf8
   LC_MESSAGES=fr_FR.UTF-8
   SHELL=/bin/bash
  SourcePackage: lvm2
  UpgradeStatus: No upgrade log present (probably fresh install)

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