Bug 245210 - "ifup eth1" generates abort messages re eth0, an disconnected device
"ifup eth1" generates abort messages re eth0, an disconnected device
Product: Fedora
Classification: Fedora
Component: initscripts (Show other bugs)
i386 Linux
low Severity low
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Assigned To: Bill Nottingham
Fedora Extras Quality Assurance
Depends On:
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Reported: 2007-06-21 13:50 EDT by Peter Trenholme
Modified: 2014-03-16 23:07 EDT (History)
2 users (show)

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Doc Type: Bug Fix
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Last Closed: 2008-06-16 21:40:54 EDT
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Description Peter Trenholme 2007-06-21 13:50:01 EDT
Description of problem: When the NetworkManager is started as a boot service, I
believe it runs the "ifup" script for all system devices, even if the device is
not plugged in. There is, in fact, a bug in the "ifup" script (or some program
invoked by that script) that causes an "ifup eth1" to attempt to access eth0
even when the cable to that device is unplugged.

Since the script waits for the attempted access to the disconnected device to
time-out before doing the requested "ifup eth1" there is a delay of a couple of
minutes at the end of the boot process, with the screen blanked. 

Version-Release number of selected component (if applicable):

How reproducible:
Every boot

Steps to Reproduce:
1.Run "/sbin/ifup eth1" with eth0 unplugged
Actual results:
[root ~]# ifdown eth1
External network device eth0 is not ready. Aborting..
[root ~]# ifup eth1

Determining IP information for eth1...External network device eth0 is not ready.
External network device eth0 is not ready. Aborting..
[root ~]#

Expected results:
[root ~]# ifdown eth1
[root ~]# ifup eth1
[root ~]#

Additional info: The system on which I'm running is a laptop with "eth0" a
built-in cabled ethernet connection, and eth1 a wireless device.
Comment 1 Dan Williams 2008-02-11 22:32:29 EST
Hmm; NM doesn't run ifup/ifdown at all but handles the device configuration
directly.  You may be thinking about the 'network' system service, which is
something different.
Comment 2 Peter Trenholme 2008-02-12 13:03:22 EST
No. The problem is visible when ifup is run, but ifup does invoke other programs
which, I suspect, may also be invoked by NM.

The point is not which top-level program is causing the hang on boot, but which
network start-up script (or program) used by the top-level program (or some
child of the top-level program) is ignoring the device argument and accessing
all possible devices.

I posted this bug to NM because NM (when started as a service) caused the boot
process to appear to hang, and mentioned ifup because that script showed the
same symptom and I thought that starting form there would be simpler than
tracing the problem from the service start up.

Note: The problem may have been resolved in F8 since I can't recall seeing it
since I moved to F8 from FC7.
Comment 3 Bug Zapper 2008-05-14 09:14:22 EDT
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Comment 4 Bug Zapper 2008-06-16 21:40:53 EDT
Fedora 7 changed to end-of-life (EOL) status on June 13, 2008. 
Fedora 7 is no longer maintained, which means that it will not 
receive any further security or bug fix updates. As a result we 
are closing this bug. 

If you can reproduce this bug against a currently maintained version 
of Fedora please feel free to reopen this bug against that version.

Thank you for reporting this bug and we are sorry it could not be fixed.

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