[Bug 809221] Re: unable to mount ceph root at boot due to stripping of trailing slashes

[Steve Langasek]

If :/foo and :/foo/ have the same meaning, then we would want to still
normalize them for mountall's purposes.  I think ceph is not the only
network filesystem where stripping the only / may give unexpected
results; I get strange results for NFSv4 root mounts too, though with
NFS it doesn't actually fail to mount, it just looks strange.

I haven't reviewed the patch, but the above general principle makes
sense to me.

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https://bugs.launchpad.net/bugs/809221

Title:
  unable to mount ceph root at boot due to stripping of trailing slashes

Status in “mountall” package in Ubuntu:
  Triaged

Bug description:
  When the mount device doesn't start with UUID= or LABEL= update_mount
  will strip the trailing slashes from the mount device name. For most
  situations this is fine but with Ceph it's quite possible that, for
  example, 192.168.0.15:/ would be an acceptable mount device but mount
  at boot fails since it passes 192.168.0.15: to mount.ceph, which then
  complains about an invalid device.

  I have attached a patch that resolves this issue. I don't know if it
  is the best way to do it but it works for me okay and shouldn't have
  an impact anywhere else.

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