Discuss April 2011

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312 participants
282 discussions

SNMP issues since 5.6 upgrade
by Paul Stewart 24 Apr '11

24 Apr '11

Hi there... I scanned the archives and did some Google'ing ... can find some references to these errors but didn't find a solution. This started when upgrading some servers from 5.5 to 5.6 release. It's net-snmp creating a lot of errors in the /var/log/messages suddenly. I do believe this is only happening on 64 bit installations but not 100% sure yet... [root@mail1 paul]# uname -a Linux mail1.xxxxxx.xxx 2.6.18-238.9.1.el5PAE #1 SMP Tue Apr 12 18:52:55 EDT 2011 i686 i686 i386 GNU/Linux [root@mail1 paul]# cat /etc/issue CentOS release 5.6 (Final) Kernel \r on an \m Apr 24 10:26:24 mail1 snmpd[3493]: netsnmp_assert 1 == new_val->high failed int64.c:419 netsnmp_c64_check32_and_update() Apr 24 10:26:24 mail1 snmpd[3493]: netsnmp_assert 1 == new_val->high failed int64.c:419 netsnmp_c64_check32_and_update() Apr 24 10:26:54 mail1 snmpd[3493]: c64 32 bit check failed Apr 24 10:26:54 mail1 snmpd[3493]: netsnmp_assert 1 == new_val->high failed int64.c:419 netsnmp_c64_check32_and_update() Apr 24 10:26:54 mail1 snmpd[3493]: c64 32 bit check failed Apr 24 10:27:24 mail1 snmpd[3493]: netsnmp_assert 1 == new_val->high failed int64.c:419 netsnmp_c64_check32_and_update() Apr 24 10:27:24 mail1 snmpd[3493]: c64 32 bit check failed Apr 24 10:27:24 mail1 snmpd[3493]: netsnmp_assert 1 == new_val->high failed int64.c:419 netsnmp_c64_check32_and_update() Apr 24 10:27:37 mail1 snmpd[3493]: Connection from UDP: [98.124.20.115]:52611 Apr 24 10:27:54 mail1 snmpd[3493]: c64 32 bit check failed Apr 24 10:27:54 mail1 snmpd[3493]: netsnmp_assert 1 == new_val->high failed int64.c:419 netsnmp_c64_check32_and_update() Apr 24 10:27:54 mail1 snmpd[3493]: c64 32 bit check failed Apr 24 10:28:24 mail1 snmpd[3493]: netsnmp_assert 1 == new_val->high failed int64.c:419 netsnmp_c64_check32_and_update() Apr 24 10:28:24 mail1 snmpd[3493]: c64 32 bit check failed Apr 24 10:28:24 mail1 snmpd[3493]: netsnmp_assert 1 == new_val->high failed int64.c:419 netsnmp_c64_check32_and_update() Apr 24 10:28:54 mail1 snmpd[3493]: c64 32 bit check failed Apr 24 10:28:54 mail1 snmpd[3493]: netsnmp_assert 1 == new_val->high failed int64.c:419 netsnmp_c64_check32_and_update() Apr 24 10:28:54 mail1 snmpd[3493]: c64 32 bit check failed Apr 24 10:29:24 mail1 snmpd[3493]: netsnmp_assert 1 == new_val->high failed int64.c:419 netsnmp_c64_check32_and_update() Apr 24 10:29:24 mail1 snmpd[3493]: c64 32 bit check failed Apr 24 10:29:24 mail1 snmpd[3493]: netsnmp_assert 1 == new_val->high failed int64.c:419 netsnmp_c64_check32_and_update() Apr 24 10:29:54 mail1 snmpd[3493]: c64 32 bit check failed Apr 24 10:29:54 mail1 snmpd[3493]: netsnmp_assert 1 == new_val->high failed int64.c:419 netsnmp_c64_check32_and_update() Apr 24 10:29:54 mail1 snmpd[3493]: c64 32 bit check failed Apr 24 10:30:24 mail1 snmpd[3493]: c64 32 bit check failed Apr 24 10:30:24 mail1 snmpd[3493]: netsnmp_assert 1 == new_val->high failed int64.c:419 netsnmp_c64_check32_and_update() Is there a fix for this? Thanks ;) Paul Stewart

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Re; Valgrind/Callgrind 3.6.1 does not appear to work on Centos Linux 5.5
by Frank Chang 24 Apr '11

24 Apr '11

Tru Huynh, Thank you for your reply. When I enter uname -a I obtain the following output: Linux localhost.localdomain 2.6.18-194.26.1.el5PAE #1 SMP Tue Nov 9 13:34:42 EST 2010 i686 i686 i386 GNU/Linux. This information indicates we are using x86_32 architecture rather than a x86_64 architecture. Also, when I enter rpm -q glibc glibc-devel, I obtain the following output: glibc-2.5.49.el5_57 glibc-devel-2.5.49.el5-5.7. I think we are using a different architecture compared to your x86_64 architecture. Also , we using a different version of glibc and glibc-devel than the versions listed in your reply. Please tell us whether our Callgrind errors are caused by a libc mismatch and if there is a workaround to this lib mismatch. Thank you.

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Re: [CentOS] yum install oprofile-gui
by Kai Schaetzl 23 Apr '11

23 Apr '11

Frank Chang wrote on Sat, 23 Apr 2011 11:56:31 -0400: > Kai Schaelzl, I think I underdetstand your email. Yes, I am replying > to a digest version. Could you suggest another client which we could > use the emails are arranged by threads. No, if you are replying to the digest version there is no way to get correct threading. That's why I asked if you are using the digest or a broken client ;-) The only way to get to correct threading is to move from digest to normal mailing list subscription. Cheers, Kai

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Re: [CentOS] yum install oprofile-gui
by Frank Chang 23 Apr '11

23 Apr '11

Nicolas Thierry-Mieg, We followed your instructions to yum install oprofile-gui. We were able to install oprofile-guii.i386 0:0.9.4-15.el5.centos and oprofile.i386 0.0.9.4.15.el.5.centos. I was wondering what our next step should be. I tried ./configure --with-kernel-support with oprofile-0.9.6 and obtain a warning, a working QT not found, no GUI was built. Should we try to build oprofile-0.9.4? If so, how steps do have to do install oprofile-0.9.4? Thank you.

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KVM, virsh attach-disk error
by Jussi Hirvi 23 Apr '11

23 Apr '11

I try to add a fresh, unformatted disk partition to a KVM guest. I follow the directions given here: http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html-single/Vi… First I check that the module acpiphp is present on the guest. It is. On the host I write: virsh attach-disk test1 /dev/sdb1 sda --driver tap --mode shareable - test1 is my guest domain - /dev/sdb1 is the name of the unformatted partition on the host - sda is what it is supposed to be called on the guest (the name is unused on the guest) - the example in RHEL Virtualization guide says "--mode readonly". This does not sound right for a hard disk; hence I try "--mode shareable"; the error (see below) however is the same, whichever I use Now, the command above produces this error. I find no google results with this error text. Can someone tell, what causes the error? > error: Failed to attach disk error: operation failed: adding scsi > disk controller failed: type scsi not a hotpluggable PCI device. > failed to add if=scsi - Jussi -- Jussi Hirvi * Green Spot Suvilahdenkatu 1 B 78 * 00500 Helsinki * Finland Tel. +358 9 493 981 * Mobile +358 40 771 2098 (only sms) jussi.hirvi(a)greenspot.fi * http://www.greenspot.fi

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can not install CentOS as VM in KVM
by Michael Zoet 23 Apr '11

23 Apr '11

Hi to all, I am trying to install CentOS 5.5 as VM on a KVM server running Ubuntu 10.04. The Problem: the installer does not find the iso image. (Direct copy from website downlod.) I can start CentOS from the iso and can even do some disk checks. But when I go further the installer says "no CDROm found". Pretty weird. I tried all CentOS 5.5. image available (Live CD, net install, bin 1 of 8, 32 bit and 64 bit). Other installation (Debin, Ubuntu, SLES, Windows XP, Windows 7, Windows Server 2008) worked fine. Perhaps somebody can help me in setting things up for that. Michael

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Valgrind/Callgrind 3.6.1 does not appear to work on Centos Linux 5.5
by Frank Chang 22 Apr '11

22 Apr '11

Hi, For the last day or two I having been trying to get Valgrind/Callgrind 3.6.1 to work on Centos Linux 5.5 using a simple Fibonacci C++ program(shown below). After compiling the program using g++ -g -o MatchUpAccurate MatchUpAccurate.cpp, we run: /home/frankc/DQTTest/valgrind-3.6.1/coregrind/valgrind --tool=callgrind --dump-instr=yes --simulate-cache=yes --collect-jumps=yes ./MatchUpAccurate.exe. Then we get an error message from callgrind(shown below). A programmer sent me an email showing me that my test program is profiled correctly on Ubuntu. I received an email from a programmer yesterday who thinks the reason that callgrind is not able to profile my C++ program on Centos Linux Version 5.5 is because of an libc conflict. "what is the version of libc on the host? Is it a vm or physical? I guess it is gonna be a ABI/version conflict of libc. If you cannot figure it out, just report it. Chances are, a dev will be able to tell you in 5 seconds." In order to determine what version of libc is on the Centos Linux 5.5 host, I tried: rpm -qa | grep glibc. The answer was: glibc-devel-2.5-49.el5_5.7 glibc-2.5-49.el5_5.7 glibc-headers-2.5-49.el5_5.7 glibc-common-2.5-49.el5. We were wondering if anyone has been able to run Valgrind/Callgrind 3.6.1 on Centos Linux 5.5? Thank you. // Callgrind error message ==18130== Callgrind, a call-graph generating cache profiler ==18130== Copyright (C) 2002-2010, and GNU GPL'd, by Josef Weidendorfer et al. ==18130== Using Valgrind-3.6.1 and LibVEX; rerun with -h for copyright info ==18130== Command: ./MatchUpAccurate.exe ==18130== --18130-- warning: Pentium 4 with 12 KB micro-op instruction trace cache --18130-- Simulating a 16 KB I-cache with 32 B lines ==18130== For interactive control, run 'callgrind_control -h'. std::ios_base::Init::Init() BB# 215387 Callgrind: jumps.c:164 (new_jcc): Assertion '(0 <= jmp) && (jmp <= from->bb->cjmp_count)' failed. ==18130== at 0x3801E4C8: report_and_quit (m_libcassert.c:193) ==18130== by 0x3801E69C: vgPlain_assert_fail (m_libcassert.c:267) ==18130== by 0x3800FCD9: vgCallgrind_get_jcc (jumps.c:164) ==18130== by 0x38003534: vgCallgrind_push_call_stack (callstack.c:217) ==18130== by 0x38001FDB: vgCallgrind_setup_bbcc (bbcc.c:844) ==18130== by 0x6292A7E3: ??? sched status: running_tid=1 Thread 1: status = VgTs_Runnable ==18130== at 0x3E30CB0: std::ios_base::Init::Init() (in /usr/lib/libstdc++.so.6.0.8) ==18130== by 0x3EA0125: ??? (in /usr/lib/libstdc++.so.6.0.8) ==18130== by 0x3E22BD0: ??? (in /usr/lib/libstdc++.so.6.0.8) ==18130== by 0xAE2162: call_init (in /lib/ld-2.5.so) ==18130== by 0xAE2272: _dl_init (in /lib/ld-2.5.so) ==18130== by 0xAD484E: ??? (in /lib/ld-2.5.so) // Test program MatchUpTest.cpp int fibonacci(int n){ if (n == 0) return 0; else if (n == 1) return 1; else return fibonacci(n - 1) + fibonacci(n-2); } int main(int Argc_,char *Argv_[]) { fibonacci(10); return 1; }

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Re: [CentOS] QT and oprofile on Centos Linux 5.5
by Frank Chang 22 Apr '11

22 Apr '11

Philip Schaffner, Thank you for your reply. I guess we will have to wait until Centos 6 arrives to get a working QT. Did you see Nicolas Thierry-Mieg's response regarding yum install oprofile-gui. We were able to install oprofile-guii.i386 0:0.9.4-15.el5.centos and oprofile.i386 0.0.9.4.15.el.5.centos. Thank you.

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GFS2 performance
by Arnts, Leo 22 Apr '11

22 Apr '11

Hi, I'm trying to get more performance out of my DRBD cluster with gfs2. It seems that our gfs2 implementation is quit slow. When running the ping_pong test we get no more than a 1000 locks/sec on the disk. ./ping_pong /mnt/backup/test.dat 4 879 locks/sec The cluster config has been updated with: <dlm plock_ownership="1" plock_rate_limit="0"/> <gfs_controld plock_rate_limit="0"/> gfs2_tool getargs /mnt/backup statfs_percent 0 data 2 suiddir 0 quota 0 posix_acl 0 upgrade 0 debug 0 localflocks 0 localcaching 0 ignore_local_fs 0 spectator 0 hostdata jid=1:id=2752514:first=0 locktable lockproto gfs2_tool df -H /mnt/backup: SB lock proto = "lock_dlm" SB lock table = "cybercenter:backup" SB ondisk format = 1801 SB multihost format = 1900 Block size = 4096 Journals = 2 Resource Groups = 7451 Mounted lock proto = "lock_dlm" Mounted lock table = "cybercenter:backup" Mounted host data = "jid=1:id=2752514:first=0" Journal number = 1 Lock module flags = 0 Local flocks = FALSE Local caching = FALSE Type Total Used Free use% ------------------------------------------------------------------------ data 3T 1T 1T 47% inodes 1T 96M 1T 0% Hdparm information of the disk: hdparm -tT /dev/sdb /dev/sdb: Timing cached reads: 20988 MB in 2.00 seconds = 10512.28 MB/sec Timing buffered disk reads: 74 MB in 3.05 seconds = 24.30 MB/sec Has someone an idea about increasing the performance of my gfs2 filesystem? Kind Regards, Leo Arnts

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How to merge many LDAP Servers to the One Server
by sync 22 Apr '11

22 Apr '11

Hi , all : I have many LDAP Servers which are 389 LDAP Server on different network . So I want to merge them to the one server. Could someone can give some suggestions? Thanks in advance...

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