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Re: [CentOS] Yum Segfaulting
by Ken Smith 19 Dec '12

19 Dec '12

Reindl Harald wrote: > > > Am 18.12.2012 19:41, schrieb Ken Smith: >> Hi All, I have a Centos 5.8 system with relatively little memory, that >> runs in rl3, where yum has decided not to work any more. {snip} >> >> Any ideas where to look - I'm a bit stumped > > at least with "dmesg" and in /var/log/messages where ANY > useful information will be found if problems happening > Indeed. Nothing is getting logged to messages. Here are the last few system calls logged by running yum via strace open("/usr/lib/python2.4/_socketmodule.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory) open("/usr/lib/python2.4/_socket.py", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory) open("/usr/lib/python2.4/_socket.pyc", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory) stat64("/usr/lib/python2.4/plat-linux2/_socket", 0xbfdb3954) = -1 ENOENT (No such file or directory) open("/usr/lib/python2.4/plat-linux2/_socket.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory) open("/usr/lib/python2.4/plat-linux2/_socketmodule.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory) open("/usr/lib/python2.4/plat-linux2/_socket.py", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory) open("/usr/lib/python2.4/plat-linux2/_socket.pyc", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory) stat64("/usr/lib/python2.4/lib-tk/_socket", 0xbfdb3954) = -1 ENOENT (No such file or directory) open("/usr/lib/python2.4/lib-tk/_socket.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory) open("/usr/lib/python2.4/lib-tk/_socketmodule.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory) open("/usr/lib/python2.4/lib-tk/_socket.py", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory) open("/usr/lib/python2.4/lib-tk/_socket.pyc", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory) stat64("/usr/lib/python2.4/lib-dynload/_socket", 0xbfdb3954) = -1 ENOENT (No such file or directory) open("/usr/lib/python2.4/lib-dynload/_socket.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory) open("/usr/lib/python2.4/lib-dynload/_socketmodule.so", O_RDONLY|O_LARGEFILE) = 7 fstat64(7, {st_mode=S_IFREG|0555, st_size=49268, ...}) = 0 open("/usr/lib/python2.4/lib-dynload/_socketmodule.so", O_RDONLY) = 8 read(8, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\240\33\0\0004\0\0\0"..., 512) = 512 fstat64(8, {st_mode=S_IFREG|0555, st_size=49268, ...}) = 0 mmap2(NULL, 48008, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 8, 0) = 0xdcc000 mmap2(0xdd5000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 8, 0x9) = 0xdd5000 close(8) = 0 --- SIGSEGV (Segmentation fault) @ 0 (0) --- +++ killed by SIGSEGV +++ whereas on a good system, albeit 64 bit, it proceds beyond that point, as follows... open("/usr/lib64/python2.4/lib-dynload/_socketmodule.so", O_RDONLY) = 7 fstat(7, {st_mode=S_IFREG|0555, st_size=52152, ...}) = 0 open("/usr/lib64/python2.4/lib-dynload/_socketmodule.so", O_RDONLY) = 8 read(8, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`.\0\0\0\0\0\0"..., 832) = 832 fstat(8, {st_mode=S_IFREG|0555, st_size=52152, ...}) = 0 mmap(NULL, 2147440, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 8, 0) = 0x2ae0a0858000 mprotect(0x2ae0a0862000, 2093056, PROT_NONE) = 0 mmap(0x2ae0a0a61000, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 8, 0x9000) = 0x2ae0a0a61000 close(8) = 0 mmap(NULL, 266240, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2ae0a0a65000 close(7) = 0 On both the faulty system and a good one, yum appears to hunt for various versions of python files. Anyone with more knowledge that I have of system calls, is there a clue in here? Thanks Ken -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

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CentOS-announce Digest, Vol 94, Issue 10
by centos-announce-request＠centos.org 19 Dec '12

19 Dec '12

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off-topic: firefox & noscript
by m.roth＠5-cent.us 18 Dec '12

18 Dec '12

Not a biggie, but definitely annoying: I try to register for a media site, so I can put in a comment, and every time I hit "register", noscript pops up telling me it's protecting me from cross-site scripting... and if it's giving me any way to say, "that's ok for this site", I don't see it. I've tried typing in a pattern for xss, and no joy. Clues for the annoyed? mark

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Yum Segfaulting
by Ken Smith 18 Dec '12

18 Dec '12

Hi All, I have a Centos 5.8 system with relatively little memory, that runs in rl3, where yum has decided not to work any more. As follows:- # free total used free shared buffers cached Mem: 774628 697516 77112 0 77720 313284 -/+ buffers/cache: 306512 468116 Swap: 2048276 160 2048116 # yum -v Segmentation fault # uname -a Linux **.**.co.uk 2.6.18-308.4.1.el5 #1 SMP Tue Apr 17 17:08:10 EDT 2012 i686 i686 i386 GNU/Linux # cat /etc/redhat-release CentOS release 5.8 (Final) I checked with "rpm -V yum" that its installed OK. Rebuilt the rpm database. Cut yum.repos.d down to just Centos-Base. I've manually cleared its cache. I've stopped most other processing to get the free memory to around 300K and yum still segfaults. I don't really feel like managing this system with just rpm :-( Any ideas where to look - I'm a bit stumped. Thanks Ken -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

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yum --security not detecting security updates
by Terry 18 Dec '12

18 Dec '12

Hello, We are running CentOS 5.5 on a server that is not reporting any security updates: [root@server01 ~]# yum -y --security check-update Loaded plugins: fastestmirror, security Loading mirror speeds from cached hostfile * base: bay.uchicago.edu * extras: bay.uchicago.edu * updates: mirror.nyi.net Limiting package lists to security relevant ones No packages needed, for security, 261 available However, Nexpose, our vulnerability scanner detected otherwise. Upon digging deeper, I noticed that we are on a kernel version that has a known issue fixed in a later version: [root@server01 ~]# rpm -q kernel kernel-2.6.18-194.el5 kernel-2.6.18-194.8.1.el5 http://rhn.redhat.com/errata/RHSA-2010-0610.html http://lists.centos.org/pipermail/centos-announce/2010-August/016890.html I appreciate anyone's insight in helping me understand this a bit better. Thanks!

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CentOS-announce Digest, Vol 94, Issue 9
by centos-announce-request＠centos.org 18 Dec '12

18 Dec '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. CEEA-2012:1576 CentOS 6 pch_gbe Update (Johnny Hughes) 2. CEBA-2012:1581 CentOS 6 selinux-policy Update (Johnny Hughes) 3. CEBA-2012:1582 CentOS 6 qemu-kvm Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Mon, 17 Dec 2012 13:45:49 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEEA-2012:1576 CentOS 6 pch_gbe Update To: centos-announce(a)centos.org Message-ID: <20121217134549.GA23056(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Enhancement Advisory 2012:1576 Upstream details at : https://rhn.redhat.com/errata/RHEA-2012-1576.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 3a5658cd4a78854913abca43d027d646a9dc5da048c8f85a3673ab724893d788 kmod-pch_gbe-1.01-2.el6_3.i686.rpm x86_64: 9490c2e793a1ba27e0371e8de77b50439cfe6e2ca1b09492e0994cc7f0e6be1d kmod-pch_gbe-1.01-2.el6_3.x86_64.rpm Source: fbda05b0a808a0c0b1662eb1a92cce7754b5ac820486bfb23e4d5164fa5bb0c3 pch_gbe-1.01-2.el6_3.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 2 Date: Tue, 18 Dec 2012 11:25:15 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2012:1581 CentOS 6 selinux-policy Update To: centos-announce(a)centos.org Message-ID: <20121218112515.GA21578(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2012:1581 Upstream details at : https://rhn.redhat.com/errata/RHBA-2012-1581.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 93fcbda76348333a270a0fc8b03065aa93dd4e1404f085c5cfb16e035df3b5df selinux-policy-3.7.19-155.el6_3.13.noarch.rpm 7b891c2840e85440e106723489985f50f24c5764cbdf99f605ea2331156c0d83 selinux-policy-doc-3.7.19-155.el6_3.13.noarch.rpm 11c1753caefb29036d889da2f1f8ccb290016bdce9dcc9182bff6e434338732a selinux-policy-minimum-3.7.19-155.el6_3.13.noarch.rpm 133f4e518fea37a8d7f5347fb9df63391f3ddc47a5c11d691371baa0811cd18d selinux-policy-mls-3.7.19-155.el6_3.13.noarch.rpm 5081b403b0db4d1a6aa2d2d4bb992d6daed8dfda7d2d2bc64d1bf3e7218dfc04 selinux-policy-targeted-3.7.19-155.el6_3.13.noarch.rpm x86_64: 93fcbda76348333a270a0fc8b03065aa93dd4e1404f085c5cfb16e035df3b5df selinux-policy-3.7.19-155.el6_3.13.noarch.rpm 7b891c2840e85440e106723489985f50f24c5764cbdf99f605ea2331156c0d83 selinux-policy-doc-3.7.19-155.el6_3.13.noarch.rpm 11c1753caefb29036d889da2f1f8ccb290016bdce9dcc9182bff6e434338732a selinux-policy-minimum-3.7.19-155.el6_3.13.noarch.rpm 133f4e518fea37a8d7f5347fb9df63391f3ddc47a5c11d691371baa0811cd18d selinux-policy-mls-3.7.19-155.el6_3.13.noarch.rpm 5081b403b0db4d1a6aa2d2d4bb992d6daed8dfda7d2d2bc64d1bf3e7218dfc04 selinux-policy-targeted-3.7.19-155.el6_3.13.noarch.rpm Source: adfd2d9a56f1a82244d2351586b093c680472dbb44ddf894c8e50a6c27c9a3f8 selinux-policy-3.7.19-155.el6_3.13.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 3 Date: Tue, 18 Dec 2012 11:25:37 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2012:1582 CentOS 6 qemu-kvm Update To: centos-announce(a)centos.org Message-ID: <20121218112537.GA21659(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2012:1582 Upstream details at : https://rhn.redhat.com/errata/RHBA-2012-1582.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: afd61224e79e69cc3e0ae8532fece1c87cbaf7cbb03102cd1a95daaacff9eae7 qemu-guest-agent-0.12.1.2-2.295.el6_3.10.x86_64.rpm b251e176577a174dbd00a435ba4a434fbb03bb6eabd8dd0a871e128fab8b33f0 qemu-img-0.12.1.2-2.295.el6_3.10.x86_64.rpm 64b40dbbacfa8083be1270eaaaf12c569731c69cc9f91cb938f243a1416481e1 qemu-kvm-0.12.1.2-2.295.el6_3.10.x86_64.rpm 5e564afadc9316ff441d3c7b878563fd78191c141cd31ea2db5c8bec7d09a1f5 qemu-kvm-tools-0.12.1.2-2.295.el6_3.10.x86_64.rpm Source: 128f9c42ce265dec81f2f6341495a21d7330721fa9809df6a44d118d72322e51 qemu-kvm-0.12.1.2-2.295.el6_3.10.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 94, Issue 9 **********************************************

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dm-multipath do not autoscan partition table
by Juraj Pisar 18 Dec '12

18 Dec '12

Hello I am wondering if anyone este tried this. I Have few CentOS 6.2 systems that are running KVM virtual machines. As storage backend for them I use 2 iscsi targets (based on openindiana). For accessing these disks I use dm-multipath, since I use 2 separate networks for access. For these reasons I want host system to force not to scan dm-multipath disks for partitions. According to multipath.conf man there should be feature to do it defaults { find_multipaths yes user_friendly_names no # features "1 no_partitions" } However when I try this error: Dec 8 21:45:40 vnode4 kernel: device-mapper: table: 253:41: multipath: Unrecognised multipath feature request Dec 8 21:45:40 vnode4 kernel: device-mapper: table: 253:41: multipath: Unrecognised multipath feature request Dec 8 21:45:40 vnode4 kernel: device-mapper: table: 253:9: multipath: Unrecognised multipath feature request Dec 8 21:45:40 vnode4 kernel: device-mapper: table: 253:9: multipath: Unrecognised multipath feature request Do you have similar experience, or is there better way how to solve this ? Regards Juraj

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free memory listing
by AshikAli.m 18 Dec '12

18 Dec '12

Hi, I have two 64 bit cent Os machine. I googled that in linux always show entire memory as used. But below showing only 1 GB detected. *Machine 1 :* i) It has 31 GB of ram. [root@machine1]# free -g total used free shared buffers cached Mem: 31 1 30 0 0 0 -/+ buffers/cache: 0 30 Swap: 49 0 49 ------------------------------------------ *Machine 2 :* i)It has 11 GB of ram. [root@machine2]# free -g total used free shared buffers cached Mem: 11 11 0 0 0 9 -/+ buffers/cache: 1 10 Swap: 49 0 49 Could you please anyone can explain why ? Thanks, Ashik -* *

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Re: [CentOS] - problem with reboot or shutdown
by Paolo De Michele 18 Dec '12

18 Dec '12

On 12/17/2012 11:53 PM, Russell Clay1 wrote: > Hi, Good morning Russell, > > To change runlevel, use the following command as root: > > telinit 1 In console I've configured telinit1 and telinit 1 1>stdout.txt 2>stderr.txt but I have not found anything in these files In /etc/grub/ I have deleted the rhnb and quiet string and the machine startup is correct I tried to reboot or power off/on the machine and now it starts correctly I checked /var/log/messages and dmesg but I have not found anything serious Why? How can I resolve this issue? I don't understand why it behaves so Thanks in advance Cheers > > Do this twice, once capturing the output and the other looking at output on > screen. > > Regards > > Russell > > > > On Monday 17 December 2012 22:07:47 you wrote: >> On 12/17/2012 10:30 PM, Russell Clay1 wrote: >>> Hi >> Hi Russel >> >>> My understanding is that your problem only occurs on a reboot / shutdown. >>> >>> What I would do is this: >>> >>> 1) Log on as root, and identify which services are running: >>> >>> a) service --status-all >> a) http://nopaste.info/d7e4b36500.html >> >>> b) chkconfig >> b) http://nopaste.info/4c500c96ab.html >> >>> c) runlevel >> c) N 3 >> >>> 2) Then I would change the runlevel to 1, capturing the output >>> >>> telinit 1 1>stdout.txt 2>stderr.txt >> how to change the runlevel? >> >>> I would also recreate the situation and identify which script hangs / >>> takes a long time to shut down. >> Thanks for your help >> Cheers >> >>> Regards >>> >>> Russell

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Re: [CentOS] - problem with reboot or shutdown
by Paolo De Michele 17 Dec '12

17 Dec '12

On 12/17/2012 10:30 PM, Russell Clay1 wrote: > Hi Hi Russel > > My understanding is that your problem only occurs on a reboot / shutdown. > > What I would do is this: > > 1) Log on as root, and identify which services are running: > > a) service --status-all a) http://nopaste.info/d7e4b36500.html > b) chkconfig b) http://nopaste.info/4c500c96ab.html > c) runlevel c) N 3 > > 2) Then I would change the runlevel to 1, capturing the output > > telinit 1 1>stdout.txt 2>stderr.txt how to change the runlevel? > > I would also recreate the situation and identify which script hangs / takes a > long time to shut down. > > Thanks for your help Cheers > Regards > > Russell >

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