[Virtual-pkg-base-maintainers] Bug#754342: nfsroots: "mount: Device or ressource busy"

[Gilles MOREL]

Package: base
Severity: important

  When I boot my diskless client, I got a message on console:
Begin: Running /scripts/nfs-premount ... done.
mount: Device or ressource busy
done.
Begin: Retrying nfs mount

  This message is repeated about every second for about three minutes before the mount actually works and the services start.

  I got messages in the server (debian) syslog:
Jul  9 08:36:03 Magnet rpc.mountd[31825]: authenticated mount request from 192.168.20.50:962 for /mnt/rootfs/stardust (/mnt/rootfs/stardust)                                                                                             │
Jul  9 08:36:03 Magnet rpc.mountd[31825]: authenticated unmount request from 192.168.20.50:962 for /mnt/rootfs/stardust (/mnt/rootfs/stardust)

  Here's the client's package version (debian jessie):
linux-image-amd64: 3.14+57
linux-image-3.14-1-amd64
initramfs-tools: 0.115

  Here's the server's package version (debian wheezy):
linux-image-amd64: 3.2+46
linux-image-3.2.0-4-amd64
nfs-common: 1:1.2.6-4
nfs-kernel-server: 1:1.2.6-4

  The problem I saw is that the rootfs is allready mounted and the initramfs tries to mount it another time, but fails about 200 times before stopping it and continue the boot.
  From my point of view, these information are enought for you, but if you need more, contact to ask me.

-- System Information:
Debian Release: jessie/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 3.14-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash