Bug 120531 - ifup starts multiple dhclient's
ifup starts multiple dhclient's
Status: CLOSED RAWHIDE
Product: Fedora
Classification: Fedora
Component: initscripts (Show other bugs)
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i386 Linux
medium Severity medium
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Assigned To: Bill Nottingham
Brock Organ
:
: 120533 (view as bug list)
Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2004-04-09 17:45 EDT by Nickolai Zeldovich
Modified: 2014-03-16 22:44 EDT (History)
2 users (show)

See Also:
Fixed In Version: FC4
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Environment:
Last Closed: 2005-09-30 16:48:54 EDT
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Regression: ---
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CRM:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
Patch for /sbin/ifup (864 bytes, patch)
2004-04-09 17:45 EDT, Nickolai Zeldovich
no flags Details | Diff

  None (edit)
Description Nickolai Zeldovich 2004-04-09 17:45:24 EDT
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040312

Description of problem:
When ifup is ran multiple times, multiple copies of dhclient are
started.  This is exacerbated by a DHCP server that takes a long time
to reply -- this means that the race condition window between ifup
doing a kill on the old dhclient, and the new dhclient writing out the
/var/run/pid file upon getting a lease, is quite large.

The attached patch uses /usr/bin/lockfile to do strict locking to
avoid the possibility of concurrently running dhclient processes
altogether.

Version-Release number of selected component (if applicable):
initscripts-7.49-1

How reproducible:
Always

Steps to Reproduce:
1.Run /sbin/ifup eth0 &
2.Run /sbin/ifup eth0
3.Notice two dhclient's running that don't exit
    

Actual Results:  As a result of having two dhclient processes running,
each process obtains a different DHCP lease and reconfigures the
interface according to _its_ lease periodically.

Additional info:
Comment 1 Nickolai Zeldovich 2004-04-09 17:45:50 EDT
Created attachment 99287 [details]
Patch for /sbin/ifup
Comment 2 Miloslav Trmac 2004-04-12 06:07:56 EDT
*** Bug 120533 has been marked as a duplicate of this bug. ***
Comment 3 Bill Nottingham 2005-09-30 16:48:54 EDT
Closing bugs on older, no longer supported, releases. Apologies for any lack of
response.

This should be fixed as of Fedora Core 4.

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