Bug 149407 - nfs-utils makes a nfsnobody user which on 64b platforms is 4294967294
nfs-utils makes a nfsnobody user which on 64b platforms is 4294967294
Product: Red Hat Enterprise Linux 3
Classification: Red Hat
Component: nfs-utils (Show other bugs)
x86_64 Linux
medium Severity medium
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Assigned To: Steve Dickson
Ben Levenson
Depends On: 146214
Blocks: 156320 156322
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Reported: 2005-02-22 15:36 EST by Kent Baxley
Modified: 2007-11-30 17:07 EST (History)
4 users (show)

See Also:
Fixed In Version: RHBA-2005-697
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2005-09-28 14:53:05 EDT
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Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Kent Baxley 2005-02-22 15:36:00 EST
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.5) Gecko/20041215 Firefox/1.0 Red Hat/1.0-12.EL4

Description of problem:
 nfs-utils makes a nfsnobody user which on 64b platforms is 4294967294

 106  # Define the correct unsigned uid value for 32 or 64 bit archs
  107  %ifarch %{all_32bit_archs}
  108  %define nfsnobody_uid   65534
  109  %else
  110  %define nfsnobody_uid   4294967294
  111  %endif
  113  # If UID 65534 (or 4294967294 64bit archs) is unassigned, create user "nfsnobody"
  114  cat /etc/passwd | cut -d':' -f 3 | grep --quiet %{nfsnobody_uid} 2>/dev/null
  115  if [ "$?" -eq 1 ]; then
  116          /usr/sbin/useradd -c "Anonymous NFS User" -r \
  117                  -s /sbin/nologin -u %{nfsnobody_uid} -d /var/lib/nfs nfsnobody 2>/dev/null || :
  118  fi

From the lastlog man page they have:

      Large  gaps in uid numbers will cause the lastlog program to run longer
      with no output to the screen (i.e. if mmdf=800 and last  uid=170,  pro-
      gram will appear to hang as it processes uid 171-799).

Consequently when the nfs-utils package is installed /var/log/lastlog gets turned into a HUGE sparse file and lastlog takes a long time to run because of the huge gap.

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

How reproducible:

Steps to Reproduce:
1. Install the nfs-utils package


Actual Results:  /var/log/lastlog is turned into a really large sparse file.  Lastlog takes a long time to run.  The customer discovered this when one of their backup like systems died when confronted with the 1.2TB lastlog file.

Expected Results:  The lastlog should not have been so large.  

Additional info:

This bugzilla is tied to IT #64891.  It has been discussed that nfs-utils needs to have an option in it to not add the nfsnobody user to the last database.  

Bugzilla ID 146214 mentions a new shadow-utils from CVS in which there is a new option "-l".  This option tells useradd not to add the user to the last database. 

nfs-utils somehow needs to use this option so it does not add the nfsnobody user to the last database.
Comment 11 Steve Dickson 2005-07-08 08:28:08 EDT
*** Bug 146214 has been marked as a duplicate of this bug. ***
Comment 13 Ray Ferguson 2005-07-20 08:55:51 EDT
This also has an intersting effect on backup utilities that interact with 
lastlog.  IBMs tivoli client spooled through 64GB before I killed it. 
Comment 20 Peter Vrabec 2005-07-27 05:58:24 EDT
Also RHEL4/U2 update is already built 2:4.0.3-49.RHEL4
Comment 22 Steve Dickson 2005-07-27 07:34:10 EDT
This is fixed in RHEL3 with nfs-utils-1.0.6-41EL
and is fixed in RHEL4 with nfs-utils-1.0.6-60.EL4
Comment 25 Steve Dickson 2005-08-02 12:56:42 EDT
This fix is also in nfs-utils-1.0.7-11 available through the FC4 testing channel
Comment 26 Steve Dickson 2005-08-02 13:25:59 EDT
Note: the updated RHEL3 and RHEL4 versions of both the nfs-utils
and newly required shadow-utils packages are available in:

Comment 28 Red Hat Bugzilla 2005-09-28 14:53:06 EDT
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

Comment 29 Rex Dieter 2005-10-05 08:45:50 EDT
FYI: the added
Requires: shadow-utils 
should really be:
Requires(pre): shadow-utils
as nfs-utils certainly doesn't Require (the newer) shadow-utils after it's
already been installed.  (Or should I file this as a separate bug?)

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