[Bug 1223745] [NEW] Dependency resolver causes hang on boot

[Stefan Bader]

Public bug reported:

After upgrading to version 2.50 I had my server hang on boot without any
useful messages. I could track this to a NFS type mount in fstab which
is mounted under /home and that is another mounted fs in fstab. Like

/dev/xxx        /home          ext4  defaults          0 2
xxx:/srv/img /home/img nfs    ro,nfsvers=3  0 0

Verified that with mountall v2.49 this works (kind of as it seems to be
done first time when network has not finished setting resolv.conf from
the info DHCP returns). But at least boot finishes and by the time one
can log in the nfs mount is done.

Unlike with version 2.50 which either hangs, or when the mountpoint is
moved somewhere under /, it boots but never mounts the NFS filesystem.

Since one of the bigger changes from 2.49 is trying to do those
dependant mounts in the right order I suspect this caused the current
situation.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: mountall 2.49
ProcVersionSignature: Ubuntu 3.11.0-7.13-generic 3.11.0
Uname: Linux 3.11.0-7-generic x86_64
.run.mount.utab:
 
ApportVersion: 2.12.1-0ubuntu3
Architecture: amd64
Date: Wed Sep 11 11:17:22 2013
InstallationDate: Installed on 2013-05-22 (111 days ago)
InstallationMedia: Ubuntu-Server 13.10 "Saucy Salamander" - Alpha amd64 (20130521)
MarkForUpload: True
ProcKernelCmdline: BOOT_IMAGE=/boot/vmlinuz-3.11.0-7-generic root=UUID=638ccd94-ce45-46d9-b3f5-2e790862fd18 ro video=640x480 console=tty0 console=ttyS0,57600n8
SourcePackage: mountall
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: mountall (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug saucy

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https://bugs.launchpad.net/bugs/1223745

Title:
  Dependency resolver causes hang on boot

Status in “mountall” package in Ubuntu:
  New

Bug description:
  After upgrading to version 2.50 I had my server hang on boot without
  any useful messages. I could track this to a NFS type mount in fstab
  which is mounted under /home and that is another mounted fs in fstab.
  Like

  /dev/xxx        /home          ext4  defaults          0 2
  xxx:/srv/img /home/img nfs    ro,nfsvers=3  0 0

  Verified that with mountall v2.49 this works (kind of as it seems to
  be done first time when network has not finished setting resolv.conf
  from the info DHCP returns). But at least boot finishes and by the
  time one can log in the nfs mount is done.

  Unlike with version 2.50 which either hangs, or when the mountpoint is
  moved somewhere under /, it boots but never mounts the NFS filesystem.

  Since one of the bigger changes from 2.49 is trying to do those
  dependant mounts in the right order I suspect this caused the current
  situation.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: mountall 2.49
  ProcVersionSignature: Ubuntu 3.11.0-7.13-generic 3.11.0
  Uname: Linux 3.11.0-7-generic x86_64
  .run.mount.utab:
   
  ApportVersion: 2.12.1-0ubuntu3
  Architecture: amd64
  Date: Wed Sep 11 11:17:22 2013
  InstallationDate: Installed on 2013-05-22 (111 days ago)
  InstallationMedia: Ubuntu-Server 13.10 "Saucy Salamander" - Alpha amd64 (20130521)
  MarkForUpload: True
  ProcKernelCmdline: BOOT_IMAGE=/boot/vmlinuz-3.11.0-7-generic root=UUID=638ccd94-ce45-46d9-b3f5-2e790862fd18 ro video=640x480 console=tty0 console=ttyS0,57600n8
  SourcePackage: mountall
  UpgradeStatus: No upgrade log present (probably fresh install)

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