Bug 152467

Summary: nss_db doesn't set errno to ENOENT when returning NSS_STATUS_NOTFOUND
Product: Red Hat Enterprise Linux 2.1 Reporter: David Lehman <dlehman>
Component: nss_dbAssignee: Nalin Dahyabhai <nalin>
Status: CLOSED ERRATA QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 2.1CC: tao
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: RHBA-2005-483 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2006-03-21 14:28:21 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 143573    
Attachments:
Description Flags
set errno when an entry is not found none

Description David Lehman 2005-03-29 19:12:29 UTC
Created attachment 112426 [details]
set errno when an entry is not found

Comment 1 David Lehman 2005-03-29 19:12:29 UTC
Description of problem:
nss_db is inordinately slow when entries are not found. I patched it to set
errnop to ENOENT when returning NSS_STATUS_NOTFOUND and it fixed the problem
according to the customer. 

Version-Release number of selected component (if applicable):
nss_db-2.2-13

How reproducible:
Always

Steps to Reproduce:
1. create a very large passwd db (> 10k entries)
2. edit nsswitch.conf to check db first
3. search for an entry that's in files, not db (using id or getent)
  
Actual results:
takes 3 minutes to return

Expected results:
much faster result

Additional info:
I was unable to reproduce this in the first place, but the customer who reported
it says the patched nss_db which sets errnop fixes it.

Comment 13 Eric Hagberg 2005-05-02 16:59:38 UTC
Closed as "notabug"?

It's a bug under RHEL2.1, even if it isn't a problem in future releases
(apparently due to glibc updates)... unless you've got a glibc update that fixes
this.

Hello?

Comment 14 David Lehman 2005-05-03 04:16:56 UTC
I suspect this is also an issue in RHEL3. I am offsite and cannot verify that
right now.

I'm going to reopen this; if it was intentionally closed please provide an
explanation. My guess is it was a mis-click or similar.

Now that the confusion about the cause of (and fix for) this problem has been
cleared up we need to push like hell to get it into U7 or it's down the drain
for good.

Comment 15 Eric Hagberg 2005-05-03 11:16:23 UTC
I personally haven't seen this problem at all under RHEL3, but of course, glibc
there is a completely different beast. I suspect the problem isn't in RHEL3
because of changes/fixes in glibc that've never made it back to the glibc in RHEL2.

Didn't Update 7 already come out last week?

Comment 16 Eric Hagberg 2005-05-12 19:13:56 UTC
Hello?

Comment 23 Red Hat Bugzilla 2006-03-21 14:28:21 UTC
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.

http://rhn.redhat.com/errata/RHBA-2005-483.html