Public bug reported:
OS:
Description: Ubuntu 12.04 LTS
Release: 12.04
open-iscsi:
Installed: 2.0.871-0ubuntu9
Candidate: 2.0.871-0ubuntu9.12.04.1
Version table:
2.0.871-0ubuntu9.12.04.1 0
500 http://hu.archive.ubuntu.com/ubuntu/ precise-updates/main amd64
Packages
*** 2.0.871-0ubuntu9 0
500 http://hu.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
100 /var/lib/dpkg/status
Hi,
I have found that open-iscsi puts start/stop links into the if-up.d and
if-down.d directories under networking. These are unfiltered and will
cause all active iSCSI connections to be torn down as soon as _ANY_
interface (in my case a bridge that became unneeded - completely
unrelated to iSCSI connections) is brought down, causing possibly
catastrophic failures including data loss in processes (VMs in my case)
using those iSCSI connections.
PoC:
1. Install open-iscsi, log into some target
2. Create an interface config in /etc/network/interfaces
3. "ifup" the new interface, observe the start message of open-iscsi (!)
4. "ifdown" the interface, observe that open-iscsi is stopped, and the
block-devices backed by the targets are gone
These links need to be removed ASAP as they pose direct danger of data
loss by reacting to all events, even from completely unrelated
einterfaces, plus doing that in a completely unacceptable manner. Either
they will need to be replaced with filtered scripts to only react to
interfaces that they are using AND do that in a proper manner instead of
shutting down everything; or they could be dropped altogether, path
management can be scripted or done elsewhere.
regards,
--
Jacint
** Affects: open-iscsi (Ubuntu)
Importance: Undecided
Status: New
** Tags: if-down.d if-up.d networking open-iscsi
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https://bugs.launchpad.net/bugs/1083135
Title:
open-iscsi bound to if-*.d in networking kills iSCSI connections
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