So here's what we know now: - the reason I've not been able to reproduce this problem is because my mounts are listed by name, and are *not* resolvable before the network is up; so the mount helper fails immediately with an unresolvable name (since mount correctly detects the network is down, and propagates this failure up the stack). In the submitter's case, the name *is* resolvable (via /etc/hosts) before the network is up, which means that the mount helper gets an IP to pass down to the kernel, which it does... and the kernel's behavior in response to a mount request for an unreachable IP is less than stellar (to wit: it does *not* immediately return an error). - even after sorting out this problem, the latest boot logs still show a problem getting all the way through the mounts. The mounts all succeed and are reported back, but the 'mounted' events don't finish for all of these, either because something in upstart is blocking them or because they get lost along the way in mountall.
My current theory as to why the mounted events are being lost is because of a known issue with SIGUSR1 triggering duplicate 'mounting' events (bug #1048017)... perhaps if one of these 'mounting' events is being triggered late for the mount (which appears to be the case, from the logs), it is blocking the 'mounted' event from happening correctly. This is supported by the fact that the logs show an extra 'mounting' event for the mounts that aren't correctly recorded, vs. the ones that are correctly recorded. Of further note, in the latest log we're getting 3/8 remote mounts recorded. But two of these are actually events for the *same* mountpoint. I've seen this issue previously but don't have a bug report open for it; it's certainly not the cause of boot hangs, but it could cause mountall to emit the 'filesystem' event too early. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1233610 Title: boot process hangs very often when NFS shares are used To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mountall/+bug/1233610/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
