Discuss May 2012

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193 participants
201 discussions

nfsen daemon dies for unknown reason
by Nikolaos Milas 08 May '12

08 May '12

Hello, I am using nfsen 1.3.5 (http://nfsen.sourceforge.net/) on CentOS 5.8 x86_64 (running as a VM on a KVM Host). For those not knowing it, nfsen is using php and perl and it allows graphing and analysis of (Cisco routers) netflow data captured using nfdump. Often (about once a day) nfsen crashes for unknown reason. For example: # /data/nfsen/bin/nfsen status NfSen version: 1.3.5 NfSen status: Collector for (pen thi) port 9995 is running [2688]. nfsen daemon: pid: [2690] died for unknown reason. We are running nfsen by including in /etc/rc.local: /data/nfsen/bin/nfsen start Note that nfdump 1.6.4 (used by nfsen) is running flawlessly, never crashing. When restarting: # /data/nfsen/bin/nfsen start Starting nfcapd:(pen thi) Error( Port: 9995 ): a collector with pid[2688] is already running Starting nfsend. nfsen and nfdump were compiled from source. Note that I haven't had such issues with any other software, except nc (netcat) which would also hang in the same way. After many troubles and unsuccessful efforts to resolve, I was forced to use socat instead; socat has been running flawlessly for months. (This might be a different issue though.) Could someone please try to identify the source of these problems and suggest a solution? I've tried to find more details on the problem (see below). I tried to collect some debug info (I'm not an expert) and in the log I see the following about the first failed run (after about twelve hours): ------------------------------------------------------------------------------------- Apr 20 21:30:29 monserver nfsen[6933]: connection on UNIX socket Apr 20 21:30:29 monserver nfsen[6933]: comm server started: 18240 Apr 20 21:30:39 monserver nfsen[18240]: Failed: Timeout reading from socket! at /data/nfsen/libexec/Nfcomm.pm line 1131. Apr 20 21:30:39 monserver nfsen[6933]: comm child[18240] terminated with no exit value ------------------------------------------------------------------------------------- When running: (It seems that the multiple nfsend-comm processes remain from previous runs of nfsen; when nfsen dies "for unknown reason", I run nfsen start and nfsen starts but an nfsend-comm from the previous run remains in the process list.) # ps axjf PPID PID PGID SID TTY TPGID STAT UID TIME COMMAND ... 1 30577 30577 30577 ? -1 Ss 504 0:07 /data/nfsen/bin/nfsend-comm 1 21259 21259 21259 ? -1 Ss 504 0:01 /data/nfsen/bin/nfsend-comm 1 11816 11816 11816 ? -1 Ss 504 0:00 /data/nfsen/bin/nfsend-comm 1 19817 19817 19817 ? -1 Ss 504 0:01 /data/nfsen/bin/nfsend-comm 1 25822 25822 25822 ? -1 Ss 504 0:04 /data/nfsen/bin/nfsend-comm 1 2131 2131 2131 ? -1 Ss 504 0:03 /data/nfsen/bin/nfsend-comm ... 1 6932 6932 6932 ? -1 Rs 504 2:40 /usr/bin/perl -w /data/nfsen/bin/nfsend 6932 6933 6933 6933 ? -1 Ss 504 0:00 \_ /data/nfsen/bin/nfsend-comm # lsof -p 6932 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME nfsend 6932 nfsen cwd DIR 252,0 4096 2 / nfsend 6932 nfsen rtd DIR 252,0 4096 2 / nfsend 6932 nfsen txt REG 252,0 19200 75700 /usr/bin/perl nfsend 6932 nfsen mem REG 252,0 144776 1301763 /lib64/ld-2.5.so nfsend 6932 nfsen mem REG 252,0 1722328 1301781 /lib64/libc-2.5.so nfsend 6932 nfsen mem REG 252,0 23360 1301798 /lib64/libdl-2.5.so nfsend 6932 nfsen mem REG 252,0 615136 1301995 /lib64/libm-2.5.so nfsend 6932 nfsen mem REG 252,0 145872 1301799 /lib64/libpthread-2.5.so nfsend 6932 nfsen mem REG 252,0 85544 1301997 /lib64/libz.so.1.2.3 nfsend 6932 nfsen mem REG 252,0 53448 1301800 /lib64/librt-2.5.so nfsend 6932 nfsen mem REG 252,0 51280 73941 /usr/lib64/libdbi.so.0.0.5 nfsend 6932 nfsen mem REG 252,0 690576 78964 /usr/lib64/librrd.so.4.1.4 nfsend 6932 nfsen mem REG 252,0 1262480 228801 /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/CORE/libperl.so nfsend 6932 nfsen mem REG 252,0 12040 72516 /usr/lib64/libXau.so.6.0.0 nfsend 6932 nfsen mem REG 252,0 22032 72673 /usr/lib64/libXdmcp.so.6.0.0 nfsend 6932 nfsen mem REG 252,0 1099816 72985 /usr/lib64/libX11.so.6.2.0 nfsend 6932 nfsen mem REG 252,0 262904 1301946 /lib64/libgobject-2.0.so.0.1200.3 nfsend 6932 nfsen mem REG 252,0 114352 1302051 /lib64/libnsl-2.5.so nfsend 6932 nfsen mem REG 252,0 13520 1301945 /lib64/libgmodule-2.0.so.0.1200.3 nfsend 6932 nfsen mem REG 252,0 92816 1302056 /lib64/libresolv-2.5.so nfsend 6932 nfsen mem REG 252,0 143144 1302011 /lib64/libexpat.so.0.5.0 nfsend 6932 nfsen mem REG 252,0 543824 69252 /usr/lib64/libfreetype.so.6.3.10 nfsend 6932 nfsen mem REG 252,0 38528 73002 /usr/lib64/libXrender.so.1.3.0 nfsend 6932 nfsen mem REG 252,0 212896 69259 /usr/lib64/libfontconfig.so.1.1.0 nfsend 6932 nfsen mem REG 252,0 432992 73825 /usr/lib64/libcairo.so.2.9.2 nfsend 6932 nfsen mem REG 252,0 149344 70222 /usr/lib64/libpng12.so.0.10.0 nfsend 6932 nfsen mem REG 252,0 1297136 76276 /usr/lib64/libxml2.so.2.6.26 nfsend 6932 nfsen mem REG 252,0 39304 74098 /usr/lib64/libpangocairo-1.0.so.0.1400.9 nfsend 6932 nfsen mem REG 252,0 192152 73833 /usr/lib64/libpangoft2-1.0.so.0.1400.9 nfsend 6932 nfsen mem REG 252,0 265536 69216 /usr/lib64/libpango-1.0.so.0.1400.9 nfsend 6932 nfsen mem REG 252,0 18152 1302075 /lib64/libutil-2.5.so nfsend 6932 nfsen mem REG 252,0 48600 1302080 /lib64/libcrypt-2.5.so nfsend 6932 nfsen mem REG 252,0 25920 2701809 /var/cache/fontconfig/beeeeb3dfe132a8a0633a017c99ce0c0-x86-64.cache-2 nfsend 6932 nfsen mem REG 252,0 56414128 69193 /usr/lib/locale/locale-archive nfsend 6932 nfsen mem REG 252,0 119224 229644 /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/POSIX/POSIX.so nfsend 6932 nfsen mem REG 252,0 21424 229774 /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/Socket/Socket.so nfsend 6932 nfsen mem REG 252,0 14840 229057 /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/Sys/Syslog/Syslog.so nfsend 6932 nfsen mem REG 252,0 15880 229770 /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/IPC/SysV/SysV.so nfsend 6932 nfsen mem REG 252,0 31656 229457 /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/Data/Dumper/Dumper.so nfsend 6932 nfsen mem REG 252,0 10800 228792 /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/Cwd/Cwd.so nfsend 6932 nfsen mem REG 252,0 37400 229771 /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/List/Util/Util.so nfsend 6932 nfsen mem REG 252,0 97334 619478 /usr/lib64/perl5/vendor_perl/5.8.8/x86_64-linux-thread-multi/auto/RRDs/RRDs.so nfsend 6932 nfsen mem REG 252,0 44016 2701801 /var/cache/fontconfig/e19de935dec46bbf3ed114ee4965548a-x86-64.cache-2 nfsend 6932 nfsen mem REG 252,0 10136 2701251 /var/cache/fontconfig/e3ead4b767b8819993a6fa3ae306afa9-x86-64.cache-2 nfsend 6932 nfsen mem REG 252,0 647608 1301942 /lib64/libglib-2.0.so.0.1200.3 nfsend 6932 nfsen mem REG 252,0 13056 228836 /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/Fcntl/Fcntl.so nfsend 6932 nfsen mem REG 252,0 81800 229709 /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/Storable/Storable.so nfsend 6932 nfsen mem REG 252,0 18080 228851 /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/IO/IO.so nfsend 6932 nfsen mem REG 252,0 28544 2701803 /var/cache/fontconfig/7ddba6133ef499da58de5e8c586d3b75-x86-64.cache-2 nfsend 6932 nfsen mem REG 252,0 53880 1301825 /lib64/libnss_files-2.5.so nfsend 6932 nfsen mem REG 252,0 66360 2701404 /var/cache/fontconfig/73a61b34dd8ca4d8a159807604ab432f-x86-64.cache-2 nfsend 6932 nfsen mem REG 252,0 32184 2701806 /var/cache/fontconfig/b79f3aaa7d385a141ab53ec885cc22a8-x86-64.cache-2 nfsend 6932 nfsen mem REG 252,0 7184 2701804 /var/cache/fontconfig/87f5e051180a7a75f16eb6fe7dbd3749-x86-64.cache-2 nfsend 6932 nfsen mem REG 252,0 11704 358189 /usr/lib64/pango/1.5.0/modules/pango-basic-fc.so nfsend 6932 nfsen mem REG 252,0 237540 618666 /usr/share/fonts/dejavu-lgc/DejaVuLGCSansMono.ttf nfsend 6932 nfsen 0r CHR 1,3 0t0 1204 /dev/null nfsend 6932 nfsen 1w CHR 1,3 0t0 1204 /dev/null nfsend 6932 nfsen 2w CHR 1,3 0t0 1204 /dev/null nfsend 6932 nfsen 3u unix 0xffff8100a7cadc40 0t0 10902452 socket ------------------------------------------------------------------------------------- I also tried to run gdb at the same time: # gdb /data/nfsen/bin/nfsend 6932 GNU gdb (GDB) CentOS (7.0.1-42.el5.centos) Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later<http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-redhat-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... "/data/nfsen/bin/nfsend": not in executable format: File format not recognized Attaching to process 6932 Reading symbols from /usr/bin/perl...(no debugging symbols found)...done. Reading symbols from /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/CORE/libperl.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/CORE/libperl.so Reading symbols from /lib64/libresolv.so.2...(no debugging symbols found)...done. Loaded symbols for /lib64/libresolv.so.2 Reading symbols from /lib64/libnsl.so.1...(no debugging symbols found)...done. Loaded symbols for /lib64/libnsl.so.1 Reading symbols from /lib64/libdl.so.2...(no debugging symbols found)...done. Loaded symbols for /lib64/libdl.so.2 Reading symbols from /lib64/libm.so.6...(no debugging symbols found)...done. Loaded symbols for /lib64/libm.so.6 Reading symbols from /lib64/libcrypt.so.1...(no debugging symbols found)...done. Loaded symbols for /lib64/libcrypt.so.1 Reading symbols from /lib64/libutil.so.1...(no debugging symbols found)...done. Loaded symbols for /lib64/libutil.so.1 Reading symbols from /lib64/libpthread.so.0...(no debugging symbols found)...done. [Thread debugging using libthread_db enabled] Loaded symbols for /lib64/libpthread.so.0 Reading symbols from /lib64/libc.so.6...(no debugging symbols found)...done. Loaded symbols for /lib64/libc.so.6 Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done. Loaded symbols for /lib64/ld-linux-x86-64.so.2 Reading symbols from /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/POSIX/POSIX.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/POSIX/POSIX.so Reading symbols from /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/Socket/Socket.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/Socket/Socket.so Reading symbols from /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/Sys/Syslog/Syslog.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/Sys/Syslog/Syslog.so Reading symbols from /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/IPC/SysV/SysV.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/IPC/SysV/SysV.so Reading symbols from /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/Data/Dumper/Dumper.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/Data/Dumper/Dumper.so Reading symbols from /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/Cwd/Cwd.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/Cwd/Cwd.so Reading symbols from /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/List/Util/Util.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/List/Util/Util.so Reading symbols from /usr/lib64/perl5/vendor_perl/5.8.8/x86_64-linux-thread-multi/auto/RRDs/RRDs.so...done. Loaded symbols for /usr/lib64/perl5/vendor_perl/5.8.8/x86_64-linux-thread-multi/auto/RRDs/RRDs.so Reading symbols from /usr/lib64/librrd.so.4...done. Loaded symbols for /usr/lib64/librrd.so.4 Reading symbols from /usr/lib64/libxml2.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/libxml2.so.2 Reading symbols from /usr/lib64/libdbi.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/libdbi.so.0 Reading symbols from /usr/lib64/libpng12.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/libpng12.so.0 Reading symbols from /usr/lib64/libpangocairo-1.0.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/libpangocairo-1.0.so.0 Reading symbols from /usr/lib64/libpango-1.0.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/libpango-1.0.so.0 Reading symbols from /usr/lib64/libcairo.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/libcairo.so.2 Reading symbols from /lib64/libgobject-2.0.so.0...(no debugging symbols found)...done. Loaded symbols for /lib64/libgobject-2.0.so.0 Reading symbols from /lib64/libgmodule-2.0.so.0...(no debugging symbols found)...done. Loaded symbols for /lib64/libgmodule-2.0.so.0 Reading symbols from /lib64/libglib-2.0.so.0...(no debugging symbols found)...done. Loaded symbols for /lib64/libglib-2.0.so.0 Reading symbols from /usr/lib64/libz.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/libz.so.1 Reading symbols from /usr/lib64/libpangoft2-1.0.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/libpangoft2-1.0.so.0 Reading symbols from /usr/lib64/libfontconfig.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/libfontconfig.so.1 Reading symbols from /usr/lib64/libfreetype.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/libfreetype.so.6 Reading symbols from /usr/lib64/libXrender.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/libXrender.so.1 Reading symbols from /usr/lib64/libX11.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/libX11.so.6 Reading symbols from /lib64/librt.so.1...(no debugging symbols found)...done. Loaded symbols for /lib64/librt.so.1 Reading symbols from /lib64/libexpat.so.0...(no debugging symbols found)...done. Loaded symbols for /lib64/libexpat.so.0 Reading symbols from /usr/lib64/libXau.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/libXau.so.6 Reading symbols from /usr/lib64/libXdmcp.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/libXdmcp.so.6 Reading symbols from /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/Fcntl/Fcntl.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/Fcntl/Fcntl.so Reading symbols from /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/Storable/Storable.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/Storable/Storable.so Reading symbols from /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/IO/IO.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/auto/IO/IO.so Reading symbols from /lib64/libnss_files.so.2...(no debugging symbols found)...done. Loaded symbols for /lib64/libnss_files.so.2 Reading symbols from /usr/lib64/pango/1.5.0/modules/pango-basic-fc.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/pango/1.5.0/modules/pango-basic-fc.so warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7fff95ffd000 0x000000372a09a8d0 in __nanosleep_nocancel () from /lib64/libc.so.6 (gdb) continue Continuing. Detaching after fork from child process 7558. Detaching after fork from child process 7559. ... <Many identical messages: Detaching after fork from child process xxxxx.> ... Detaching after fork from child process 18133. Detaching after fork from child process 18135. Program received signal SIGPIPE, Broken pipe. 0x000000372ac0df15 in send () from /lib64/libpthread.so.0 (gdb) backtrace full #0 0x000000372ac0df15 in send () from /lib64/libpthread.so.0 No symbol table info available. #1 0x000000372c0cf063 in Perl_pp_send () from /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/CORE/libperl.so No symbol table info available. #2 0x000000372c08a39e in Perl_runops_standard () from /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/CORE/libperl.so No symbol table info available. #3 0x000000372c0380ba in perl_run () from /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/CORE/libperl.so No symbol table info available. #4 0x00000000004017bc in main () No symbol table info available. ------------------------------------------------------------------------------------- Does that help at all? If you would like to guide me to further debug, please provide details on what should I do. (e.g. how to install debug symbols for libperl.so and libpthread.so) Please advise. Thanks, Nick

2 2

Equivalent RHEL package for CentOS httpd package?
by Mitch Patenaude 08 May '12

08 May '12

I'm trying to find out if a particular RedHat patch has been ported to CentOS yet. In particular, this vulnerability: CVE-2011-3607 According to this: https://rhn.redhat.com/errata/RHSA-2012-0323.html it has been patched as of httpd-2.2.3-63.el5_8.1.x86_64.rpm Now, in the latest CentOS repository, I find httpd-2.2.3-63.el5.centos.1.x86_64.rpm Is this the same (or later) release? I suspect not, because the el5 != el5_8.1, but I'm not 100% sure I understand the mapping between the two sets of RPM names. Thanks, -- Mitch Patenaude mpatenaude(a)shutterfly.com

3 2

Is EXT4 filesystem production ready in CenTOS 5.x series?
by Mail List 08 May '12

08 May '12

Hi Guys, We run CENTOS 5.8 in some of our servers. We would like to know whether EXT4 filesystem is ready for production use in CENTOS 5.8 OS? We couldn't find ext4 utility mkfs.ext4 in our CENTOS 5.8 servers. Can anyone help us?

2 1

Incomplete host name resolution
by Adrian Constantin 08 May '12

08 May '12

Hello I happen to have two network interfaces on my new, up-to-date, CentOS 6.2, named eth0 and virbr0 (3 of them if I include the lo interface). However the system APIs like getaddrinfo() only return the address for the virbr0 interface (which was created by the CentOS installation), when I would like to have them both. Even if I give the configured eth0 address explicitly to getnameinfo(), it can not perform the reverse lookup to my hostname, and returns a string with the same numeric IP address given as argument. I also can not get the list of samba name aliases for my host name. I can happily ping my host from a different computer on the eth0 network, so the nmb service binds on eth0 and works as expected. I have installed and configured smb, nmb and winbind services, and I have added 'wins' to /etc/nsswitch.conf, so my hosts line there looks like: hosts: files wins mdns4_minimal [NOTFOUND=return] dns Is there something I should do for wins name service to return all IP addresses ? Are there some similar settings that I need to do in order to get the reverse lookup to work ? For reference here are my system information and application output, as follows. Here are my interfaces: [adrian@adrian projects]$ ifconfig eth0 Link encap:Ethernet HWaddr 00:1C:C0:DA:63:75 inet addr:10.0.0.154 Bcast:10.255.255.255 Mask:255.0.0.0 inet6 addr: fe80::21c:c0ff:feda:6375/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1222539 errors:0 dropped:0 overruns:0 frame:0 TX packets:708669 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1491421614 (1.3 GiB) TX bytes:136206085 (129.8 MiB) Interrupt:20 Memory:d0600000-d0620000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:751048 errors:0 dropped:0 overruns:0 frame:0 TX packets:751048 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:208785657 (199.1 MiB) TX bytes:208785657 (199.1 MiB) virbr0 Link encap:Ethernet HWaddr 52:54:00:92:B0:1A inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:4038 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:393067 (383.8 KiB) And here is how my applications behave: [adrian@adrian projects]$ python Python 2.6.6 (r266:84292, Dec 7 2011, 20:48:22) [GCC 4.4.6 20110731 (Red Hat 4.4.6-3)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import socket >>> socket.gethostbyname_ex('adrian') ('adrian', [], ['192.168.122.1']) >>> for a in socket.getaddrinfo('adrian', None, 0, 0, 0, socket.AI_CANONNAME) : ... print a ... (2, 1, 6, 'adrian', ('192.168.122.1', 0)) (2, 2, 17, '', ('192.168.122.1', 0)) (2, 3, 0, '', ('192.168.122.1', 0)) >>> [adrian@adrian projects]$ As you can see there are no name aliases returned, and there is only one IP address given for my host name. You can see my samba name aliases here: [adrian@adrian projects]$ nmblookup -A -T 10.0.0.154 Looking up status of 10.0.0.154 ADRIAN <00> - B <ACTIVE> ADRIAN <03> - B <ACTIVE> ADRIAN <20> - B <ACTIVE> ..__MSBROWSE__. <01> - <GROUP> B <ACTIVE> TERMINATORUL <00> - B <ACTIVE> TERMINATORUL <03> - B <ACTIVE> TERMINATORUL <20> - B <ACTIVE> TIMOTHY <00> - B <ACTIVE> TIMOTHY <03> - B <ACTIVE> TIMOTHY <20> - B <ACTIVE> TOUGHY <00> - B <ACTIVE> TOUGHY <03> - B <ACTIVE> TOUGHY <20> - B <ACTIVE> WORKGROUP <1d> - B <ACTIVE> WORKGROUP <1e> - <GROUP> B <ACTIVE> WORKGROUP <00> - <GROUP> B <ACTIVE> MAC Address = 00-00-00-00-00-00 (namely adrian, terminatorul, timothy, toughy). Trying to resolve my hostname to an IP address with nmblookup also returns just one of the IP addresses: [adrian@adrian projects]$ nmblookup adrian querying adrian on 192.168.122.255 192.168.122.1 adrian<00> [adrian@adrian projects]$

5 15

Re: [CentOS] [CentOS-docs] Updating the "RAID1 HowTo" to CentOS 6
by Adrian Sevcenco 07 May '12

07 May '12

On 05/02/12 18:47, Gianni Giardina wrote: > Hi. > The following HowTo on the CentOS Wiki: > > http://wiki.centos.org/HowTos/Install_On_Partitionable_RAID1 > > valid for CentOS 5, has not been updated to CentOS 6, yet. I found it > very useful during the glorious CentOS 5 days and now that I've > successfully ported my RAID1 experience to CentOS 6, I'd like to share > it with the Community. I have a question regarding partionable RAID : why should the --metadata=0.90 be used? in my man page (centos 6.2) i have this : -e, --metadata= Declare the style of RAID metadata (superblock) to be used. The default is 1.2 for --create, and to guess for other operations. The default can be overridden by setting the metadata value for the CREATE keyword in mdadm.conf. Options are: 0, 0.90 Use the original 0.90 format superblock. This format limits arrays to 28 component devices and limits component devices of levels 1 and greater to 2 terabytes. It is also possible for there to be confusion about whether the superblock applies to a whole device or just the last partition, if that partition starts on a 64K boundary. 1, 1.0, 1.1, 1.2 default Use the new version-1 format superblock. This has fewer restrictions. It can easily be moved between hosts with different endian-ness, and a recovery operation can be checkpointed and restarted. The different sub-versions store the superblock at different locations on the device, either at the end (for 1.0), at the start (for 1.1) or 4K from the start (for 1.2). "1" is equivalent to "1.2". "default" is equivalent to "1.2". given the existence of 2+ tb hdd, metadata 0.9 is no go from the start ... so, why 0.9 ? Thanks, Adrian

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Berkeley DB SQL
by Chris Geldenhuis 06 May '12

06 May '12

Hi, I am converting a system to use Berkeley DB for file access instead of ISAM files, but need to be able to examine the data in the files while testing. Does anyone know whether the DB SQL from Russian Fedora Free Updates for CentOS 6 (RHEL 6) (libdb-sql-devel-5.2.36-5.el6.R.x86_64.rpm) will work with the version of Berkeley Data Base on CentOS and RH 6? Regards ChrisG

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Ext3 and drbd read-only remount problem.
by Rafał Radecki 06 May '12

06 May '12

Hi all. I have two hosts with drbd: kmod-drbd83-8.3.8-1.el5.centos drbd83-8.3.8-1.el5.centos and kernel (CentOS 5.7): 2.6.18-308.4.1.el5 After a recent upgrade of kernel I have had two sitiuations when my ext3 filesystem on /dev/drbd0 became read-only. I've checked disks with smartctl -t long, they are ok. There are no messages with disks problems in /var/log/messages | dmesg. I've made fsck tonight but 3 hours after it has finished the problem repeated once more (under heavy load). /var/log/messages: May 6 06:22:27 srv1a kernel: EXT3-fs error (device drbd0): htree_dirblock_to_tree: bad entry in directory #43024813: rec_len % 4 != 0 - offset=73728, inode=1701012818, rec_len=30313, name_len=101 May 6 06:22:27 srv1a kernel: Aborting journal on device drbd0. May 6 06:22:28 srv1a kernel: journal commit I/O error May 6 06:22:28 srv1a kernel: ext3_abort called. May 6 06:22:28 srv1a kernel: journal commit I/O error May 6 06:22:28 srv1a kernel: EXT3-fs error (device drbd0): ext3_journal_start_sb: Detected aborted journal May 6 06:22:28 srv1a kernel: ext3_abort called. May 6 06:22:28 srv1a kernel: EXT3-fs error (device drbd0): ext3_journal_start_sb: Detected aborted journal May 6 06:22:28 srv1a kernel: Remounting filesystem read-only May 6 06:22:28 srv1a kernel: __journal_remove_journal_head: freeing b_committed_data May 6 06:22:28 srv1a kernel: __journal_remove_journal_head: freeing b_committed_data May 6 06:22:28 srv1a kernel: __journal_remove_journal_head: freeing b_committed_data May 6 06:22:28 srv1a kernel: journal commit I/O error May 6 06:22:28 srv1a kernel: EXT3-fs error (device drbd0): htree_dirblock_to_tree: bad entry in directory #43024813: rec_len % 4 != 0 - offset=106496, inode=1701012818, rec_len=30313, name_len=101 May 6 06:22:28 srv1a kernel: EXT3-fs error (device drbd0): htree_dirblock_to_tree: bad entry in directory #43024813: rec_len % 4 != 0 - offset=204800, inode=1869116005, rec_len=29811, name_len=46 I've found: https://bugzilla.redhat.com/show_bug.cgi?id=494927 There are some clues that it may be a kernel problem so I went back to: 2.6.18-274.7.1.el5 At the moment the situation is ok but I've read that the problem happens in random circumstances. Any clues what to do? Best regards, Rafal.

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CONFIG_ARPD turned on in centosplus kernel.
by Steve Clark 05 May '12

05 May '12

Alan& Akemi, Would it be possible to get CONFIG_ARPD turned on in the centosplus 6.x kernel? It is required to use opennhrp. See the link below where is was decided to turn it on in Fedora. https://bugzilla.redhat.com/show_bug.cgi?id=502844 -- Stephen Clark *NetWolves* Director of Technology Phone: 813-579-3200 Fax: 813-882-0209 Email: steve.clark(a)netwolves.com http://www.netwolves.com

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Re: [CentOS] File size diff on local disk vs NFS share
by aurfalien 05 May '12

05 May '12

On May 3, 2012, at 3:04 PM, Glenn Cooper wrote: >>>> I never really paid attention to this but a file on an NFS mount is >>>> showing 64M in size, but when copying the file to a local drive, it >>>> shows 2.5MB in size. >>>> >>>> My NFS server is hardware Raided with a volume stripe size of 128K >>>> were the volume size is 20TB, my local disk is about 500GB. >>>> >>>> Is this due to my stripe size? >>>> >>>> Nuggets are appreciated. > >> By the way, this is only across NFS as when ssh'd into the server, the file size shows 2.5M, same as the clients when its local so its seems NFS is the culprit. >> >> I have r/wsize tweaked but thats it. > > Wild guess - cached file attributes not getting updated properly in the NFS client? Has the actual file size changed recently, like in the last few hours or days? > > Cheers, > Glenn Something more relevant perhaps, mount options via FSTAB on the server are; /dev/### /mountpoint xfs defaults,allocsize=64m,relatime,logbufs=8,logbsize=256k 0 0 Notice the allocsize of 64MB, perhaps relatime might be playing a role as well? I will remove allocsize first and report back. - aurf

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CentOS-announce Digest, Vol 87, Issue 3
by centos-announce-request＠centos.org 05 May '12

05 May '12

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CEBA-2012:0541 CentOS 6 openswan Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Fri, 4 May 2012 21:25:17 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2012:0541 CentOS 6 openswan Update To: centos-announce(a)centos.org Message-ID: <20120504212517.GA20366(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2012:0541 Upstream details at : https://rhn.redhat.com/errata/RHBA-2012-0541.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 5b35ae359cacb232aedb3a36f83b2557990cd5f2b1112583e040640c990af470 openswan-2.6.32-12.el6_2.i686.rpm 122f140eb2878480a86020c67bd0cb728cf3917ff8a43e3505084468b4ccfbea openswan-doc-2.6.32-12.el6_2.i686.rpm x86_64: 5b01374d1ba7dfd047964706093c454e44d5a5a962ef8080b1533917c1b68b0b openswan-2.6.32-12.el6_2.x86_64.rpm b26dc2edd841c3a3fb42092b225ecb20584fde54617329efcb114824b76c5e01 openswan-doc-2.6.32-12.el6_2.x86_64.rpm Source: d8f8cf1923063e41b3889e19626dbd181588323a19cbdf1c18df79b892126a5f openswan-2.6.32-12.el6_2.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 87, Issue 3 **********************************************

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