[Bug 1087951] Re: mountall 100% cpu ussage

[Helm]

I have a similar problem, Ubuntu 12.04, mountall 2.36.4. I have a file-
system (/data) with 44 sqfs-images and the mountpoints for them.

In the fstab I mount first the filesystem 
/dev/vg2/datalv /data ext4 noatime 0 2

and later the images
/data/sqfs/xxxxx01.sqfs /data/xxxxx/xxxxx/xxxxx01 squashfs,ro loop 0 0
...
/data/sqfs/xxxxx44.sqfs /data/xxxxx/xxxxx/xxxxx44 squashfs,ro loop 0 0

I could reproduce the infinite running mountall with 100% CPU usage on
about 2 out of 3 bootings.

The problem seems to go away after changing all lines in fstab containing sqfs to 
/data/sqfs/xxxxx01.sqfs /data/xxxxx/xxxxx/xxxxx01 squashfs,ro,_netdev loop 0 0
(adding "_netdev", probably impossible workaround on a mobile computer)

So maybe mountall goes into the infinite loop while waiting on the availbility of the image-files, (*.iso or *.sqfs)?
I did not find any other option to make mount wait onto an other fs like waiting on the network.

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https://bugs.launchpad.net/bugs/1087951

Title:
  mountall 100% cpu ussage

Status in “mountall” package in Ubuntu:
  New

Bug description:
  After loging in to KDE I see 100% cpu ussage by mountall. I don't
  konow the exact case, but I suspect AoE or loop devices. Also, it
  doesn't happen on every boot and started several days ago. Previously
  it ocasionaly used to freeze at boot. I'm not 100% sure those two
  issues are related, however since the high cpu ussage started to come
  out I never experienced boot freeze again.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: mountall 2.42ubuntu0.2
  ProcVersionSignature: Ubuntu 3.5.0-20.31-generic 3.5.7.1
  Uname: Linux 3.5.0-20-generic i686
  NonfreeKernelModules: nvidia
  ApportVersion: 2.6.1-0ubuntu9
  Architecture: i386
  Date: Sat Dec  8 10:47:44 2012
  InstallationDate: Installed on 2012-05-12 (209 days ago)
  InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
  MarkForUpload: True
  ProcEnviron:
   LANGUAGE=
   TERM=xterm
   PATH=(custom, no user)
   LANG=pl_PL.UTF-8
   SHELL=/bin/bash
  SourcePackage: mountall
  UpgradeStatus: Upgraded to quantal on 2012-11-16 (21 days ago)

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