[Bug 669142] Re: if-up.d/if-down.d scripts restart iSCSI inappropriately

[jmedina]

This affected me,

Today I was adding a new interface and when I ifdown it it stop iscsi
service which caused multipath to fail, and then LVM and a few KVM
guests, I think you should remove this script from if-down.d and if-up.d
because it causes more damages than it helps.

It happend in ubuntu server 12.04.

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https://bugs.launchpad.net/bugs/669142

Title:
  if-up.d/if-down.d scripts restart iSCSI inappropriately

Status in “open-iscsi” package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: open-iscsi

  When any interface that is not named "lo" is brought up or down, it
  will cause open-iscsi to restart. This is regardless of if the
  interface has anything to do with iSCSI traffic, which can cause
  problems for LUNs still in use.

  The fragment of the script /etc/init.d/open-iscsi that causes this is
  near the top:

  # Support for ifupdown script.
  # Don't bother to restart when lo is configured.
  if [ "$IFACE" = lo ]; then
          exit 0
  fi

  Restricting restarts purely for the loopback interface is not
  sufficient, although adequately determining if a restart is actually
  required may be somewhat tricky. Sadly I have no suggestions for a
  solution at the moment.

  ### System Information ###
  Description:	Ubuntu 10.04.1 LTS
  Release:	10.04
  open-iscsi               2.0.871-0ubuntu4

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