[Bug 1297248] Re: Wait timeout for systemd-udevd worker process is too short

[Martin Pitt]

Also, is that really the udev rules, or is that perhaps initramfs-tools'
30 second timeout for wait-for-root? ($ROOTDELAY in /usr/share
/initramfs-tools/scripts/local)

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Title:
  Wait timeout for systemd-udevd worker process is too short

Status in “systemd” package in Ubuntu:
  Incomplete

Bug description:
  Coming from
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1276705 .

  Commit 786235ee in the upstream kernel made kthread_create() return
  immediately upon SIGKILL. On several machines, device initialization
  phase takes more than 30 seconds before kthread_create() is called.

  Since systemd-udevd unconditionally sends SIGKILL upon hardcoded 30
  seconds timeout, boot is failing upon such machines. The conclusion
  of LKML discussion seems that we should fix systemd-udevd side
  rather than fixing kthread_create() side because hardcoded 30 seconds
  timeout is considered as a bug of systemd. Therefore, please consider
  allowing configurable (or at least much longer) timeout for
  systemd-udevd worker process.

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