Ubuntu
nfs-utils package

  1. Bug #525154
  2. Comment #27

Comment 27 for bug 525154

Revision history for this message
Brian J. Murrell (brian-interlinx) wrote : Re: mountall for /var races with rpc.statd

FWIW, this new 100% reproducible case is 100% reproducible for a reason, which I will get to in a minute.

So, given that in two cases where I have had a stalled boot, signalling mountall with a USR1 has caused the boot to proceed. This seems like a race somewhere.

The reason I was able to reproduce this 100% of the time on one particular given platform is because it's a PXE (i.e. netboot/netroot) system, booting from the network and mounting it's entire root (which includes /usr and /var) from an NFS server. In this scenario I found that allowing ifup to configure an interface that has already been configured by the kernel during the netboot was causing the system to hang.

As a short-term solution until I could research the real, long-term solution, I decided that given that the interface was already up even before init was even started, I would just disable it in /etc/network/interfaces. That of course also prevents the "initctl emit -n net-device-up ..." in /etc/network/if-up.d/upstart from firing.

But it would only prevent it from firing for the ethernet interface. Shouldn't it still fire for lo being ifup'd, giving mountall the USR1 it needs?