[Bug 1547193] Re: Impossible to answer "disk drive not ready" question on serial console

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: mountall (Ubuntu)
       Status: New => Confirmed

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Title:
  Impossible to answer "disk drive not ready" question on serial console

Status in mountall package in Ubuntu:
  Confirmed

Bug description:
  When booting a server that is suffering from a (probably unrelated)
  bug in multipath-tools, I get the following questions posed on the
  serial console during bootup:

  The disk drive for /opt/vnx is not ready yet or not present.
  Continue to wait, or Press S to skip mounting or M for manual recovery

  Problem is, pressing "S" or "M" (even if followed by a newline) does
  absolutely nothing on the serial console. It does work on the KVM
  console, but that might not be available. You might very well need to
  send someone to a physical data centre somewhere in the middle of
  nowhere. (I ended up with powercycling the server, temporarily network
  booting it into a ramdisk, mounting the rootfs and commenting out the
  problematic entry from /etc/fstab, and rebooting again - which went
  fine, allowing me to later mount the missing filesystem manually via
  ssh.)

  I found no way to make the boot finish or break out to a debug shell,
  and it happens before sshd starts, so you're basically stuck with no
  apparent way to recover.  For this reason I feel the bug is quite
  severe.

  For what it's worth I'm running 14.04.4 LTS, mountall package version
  is 2.53. The kernel command line is
  «BOOT_IMAGE=/@/boot/vmlinuz-3.13.0-77-generic
  root=UUID=2a141a43-97b0-4084-8816-ed1c41ac43e0 ro rootflags=subvol=@
  console=tty1 console=ttyS0,115200n8».

  Tore

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