Discuss June 2012

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185 participants
180 discussions

Cannot See Login Screen Anymore !!
by Shiv. Nath 22 Jun '12

22 Jun '12

Hi CentOS community Friends, It is CentOS 6.2 x86_64 machine, i have upgraded few packages using "yum -y update", after the reboot machine does not show login screen, i have allowed enough time to show the screen that are about 2 hours. booting process does complete, it just hangs when it is about to show the screen. i tried to check by doing ssh for warring/error logs. nothing serious was there. but when i did the ssh to the server then i saw the following error. Prior to the upgrade machine was just okay.. ) MacBook-Pro:~ prabhpal$ ssh -l mike 41.211.25.233 mailer(a)41.211.25.233's password: -bash: /dev/null: Permission denied -bash: /dev/null: Permission denied -bash: /dev/null: Permission denied -bash: /dev/null: Permission denied -bash: /dev/null: Permission denied -bash: /dev/null: Permission denied Thanks / Nath

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'yum update' rollback or .. ?
by przemolicc＠poczta.fm 22 Jun '12

22 Jun '12

Hello, we have several physical servers (CentOS 5.*) with rather critical applications where (because of stability) we don't do regularly 'yum update'. In virtualized environemnts (under Vmware) we do a snapshot, then 'yum update', reboot and if something is wrong we rollback the snapshot. On physical servers we cannot do that. I have read about rollback option of rpm but not sure if this is reliable solution. What is your best practise regarding "rollbacking" 'yum update' on physical servers ? Regards Przemyslaw Bak (przemol)

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Re: [CentOS] SATA errors in log
by Steve Brooks 22 Jun '12

22 Jun '12

On Fri, 22 Jun 2012, Reindl Harald wrote: > > > Am 22.06.2012 13:58, schrieb Steve Brooks: >> I have a SATA PCIe 6Gbps 4 port controller card made by Startech. The >> kernel (Linux viz1 2.6.32-220.4.1.el6.x86_64) sees it as >> >> Marvell Technology Group Ltd. 88SE9123 >> >> I use it to provide extra SATA ports to a raid system. >> The HD's are all "WD2003FYYS" and so run at 3Gbps on the 6Gbps controller. >> However I am seeing lots of instances of errors like this >> >> ----------------------------------------- >> >> Jun 22 03:13:23 viz1 kernel: ata13.00: exception Emask 0x10 SAct 0x4 SErr >> 0x400000 action 0x6 frozen >> Jun 22 03:13:23 viz1 kernel: ata13.00: irq_stat 0x08000000, interface >> fatal error >> Jun 22 03:13:23 viz1 kernel: ata13: SError: { Handshk } >> Jun 22 03:13:23 viz1 kernel: ata13.00: failed command: WRITE FPDMA QUEUED >> Jun 22 03:13:23 viz1 kernel: ata13.00: cmd >> 61/e8:10:98:05:1b/01:00:66:00:00/40 tag 2 ncq 249856 out >> Jun 22 03:13:23 viz1 kernel: ata13.00: status: { DRDY } >> Jun 22 03:13:23 viz1 kernel: ata13: hard resetting link >> Jun 22 03:13:24 viz1 kernel: ata13: SATA link up 3.0 Gbps (SStatus 123 >> SControl 330) >> Jun 22 03:13:24 viz1 kernel: ata13.00: configured for UDMA/133 >> Jun 22 03:13:24 viz1 kernel: ata13: EH complete >> >> --------------------------------------- >> >> Vendor ID : 1b4b >> Device ID : 9123 >> >> I tried to see what drivers were currently being used but the command >> below gave nothing > > > why do you care for drivers? > > this looks like dying hard-drives are always looking in syslog Hi Reindl, I should have mentioned I swapped out the hard-drive and same errors on new drive. I checked the SMART attributes of the drive and nothing untoward, also executed the smartctl -long .... test wich came back error free. Steve -- Dr Stephen Brooks http://www-solar.mcs.st-and.ac.uk/ Solar MHD Theory Group Tel :: 01334 463735 Fax :: 01334 463748 E-mail :: steveb(a)mcs.st-andrews.ac.uk --------------------------------------- Mathematical Institute North Haugh University of St. Andrews St Andrews, Fife KY16 9SS SCOTLAND ---------------------------------------

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official linux raid mailing list?
by Alan McKay 21 Jun '12

21 Jun '12

Hey folks, Google seems to bring up a few things and I was wondering if there might be an official mailing list for linux RAID? thanks, -Alan -- “Don't eat anything you've ever seen advertised on TV” - Michael Pollan, author of "In Defense of Food"

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Re: [CentOS] Failing Network card
by Chuck Munro 21 Jun '12

21 Jun '12

> Date: Wed, 20 Jun 2012 10:54:33 -0700 > From: John R Pierce<pierce(a)hogranch.com> > Subject: Re: [CentOS] Failing Network card > To:centos@centos.org > Message-ID:<4FE20E59.20907(a)hogranch.com> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > On 06/20/12 8:44 AM, Gregory P. Ennis wrote: >> > 01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. >> > RTL8111/8168B PCI Express Gigabit Ethernet controller (rev ff) > > pure unmitigated junk. > > -- john r pierce N 37, W 122 santa cruz ca mid-left coast I agree with John's comment. Realtek chips are junk with unpredictable reliability, especially under heavy load. I have had several problems with various versions of the 81xx chips. When I tossed the cards in the garbage and switched to Intel-based NICs, all the problems went away. Every time I build systems with Realtek network chips on the motherboard, I disable them in the BIOS and add Intel NICs instead. YMMV, but please consider ditching Realtek altogether. Chuck

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Hanging issue with sudo command
by Kaplan, Andrew H. 21 Jun '12

21 Jun '12

Hello -- We are running Centos 5.2 64-bit on a system that functions as a mail server, and also runs a virtual server via the Virtualbox application. A user account was given sudo access via the sudoers file several years ago, and that account has worked well with various administrative jobs on the server. Recently it was observed the user account took longer to complete its login from a terminal window and console. It is also now having problems when running the sudo command. Essentially when the user runs the command, the latter hangs, and the administrator is forced to log in as root, and kill the hung progress. What would cause this issue to occur, and how can it be corrected? Thanks. The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.

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pastebin service with office LAN and not exposed to the Internet
by Kaushal Shriyan 21 Jun '12

21 Jun '12

Hi, i would like to set a pastebin server within my organization in LAN is there a step by step guide to configure and install on CentOS 5.8? Regards Kaushal

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how is this possible?
by Bob Hoffman 21 Jun '12

21 Jun '12

I got a spam today (from a yahoo server, surprise!) with nothing but a single link. http:// 2927755261/ I separated the http so it would not be a link in your email... suggest not going to it without proper measures. it takes you to a record search site. When I look up this number block here, http://www.ip-adress.com/ip_tracer/2927755261 it comes up with a different ip address... The ip address has no correlation to the numbers I searched for though. How is it possible to have a url that does not conform to the internet standards? Even ip addresses need 'periods' between each group of numbers.... and everything seems to require a period somewhere or the browser will get angry. At first I thought it was some kind of browser hack, but then the iptrace pulls up an ip. so how is this possible?

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Bug in Latest Adobe Flash Plugin
by Keith Roberts 21 Jun '12

21 Jun '12

I'm running Centos 5.7 32 bit with Firefox 10.0.5 ESR Not sure if this has been mentioned on the list yet, but the latest version of Adobe flash-plugin 11.2.202 has a bug which causes it to hang and not play SWF files. I've been pulling my hair out trying to identify why I could not get any SWF videos to play. I finally found the answer here: https://bbs.archlinux.org/viewtopic.php?pid=1080414 I have downgraded the flash-plugin now to version 10.3.183 from rpmforge repo. It works fine now :) I've also added exclude=flash-plugin to the end of /etc/yum.conf file, to make sure this does not get upgraded again. Kind Regards, Keith Roberts ----------------------------------------------------------- Websites: http://www.karsites.net http://www.php-debuggers.net http://www.raised-from-the-dead.org.uk All email addresses are challenge-response protected with TMDA [http://tmda.net] -----------------------------------------------------------

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Failing Network card
by Gregory P. Ennis 21 Jun '12

21 Jun '12

Everyone, Most of the time I am over my head in trying to troubleshoot problems. However, after reading manuals, man pages, and getting advice from this list I have been able to work my way through difficulties, and at the end, I usually have a better understanding of what 'is going on'. I can only hope this method will work on this problem too. I have been chasing a problem with a pci-e TrendNet(TEG-ECTX) gigabit card. After adding the card to a machine with a new Centos 6.2 install and naming it 'eth4' it works well for 6 to 12 hours and then fails. The failure is characterized by dropping its connection speed from 1000 to 100 while not allowing any data to flow in or out. When this happens a shutdown and reboot does not solve the problem, but shutting down and then removing the power does solve the problem. I wrote a perl script that uses the eth4 interface by pinging another machine every 60 seconds to try to figure out the relationship of the message log entries with the time of failure, and I think there is a corelation of the failure of eth4 to function with the below entry. Unfortunately, I am way over my head on this one. If any of you can help I would surely appreciate your thoughts. Some additional information that may be useful. The TrendNet card is the second TrendNet card I have used. The first card had the same symptoms, and I deduced the card was bad, and purchased another one. The symptoms are the same with the second card. Before I purchase a third card from a different manufacturer I thought I would post this to see what some of you think. This is the first pci-e card I have used; are there problems with the pci-e interfaces as opposed to pci? Do you think the motherboard could be the problem, and moving eth4 to a different slot on the motherboard would be worthwhile. Any ideas ??? Greg Ennis P.S. Here is the appropriate log entry in the /var/log/message file. Jun 20 03:08:38 Mail kernel: ------------[ cut here ]------------ Jun 20 03:08:38 Mail kernel: WARNING: at net/sched/sch_generic.c:261 dev_watchdog+0x26d/0x280() (Not tainted) Jun 20 03:08:38 Mail kernel: Hardware name: p7-1220 Jun 20 03:08:38 Mail kernel: NETDEV WATCHDOG: eth4 (r8169): transmit queue 0 timed out Jun 20 03:08:38 Mail kernel: Modules linked in: ipt_REDIRECT ipt_LOG xt_limit ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat xt_CHECKSUM iptable_mangle bridge autofs4 sunrpc bnx2fc cnic uio fcoe libfcoe libfc 8021q scsi_transport_fc garp stp llc scsi_tgt cpufreq_ondemand powernow_k8 freq_table mperf ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 iptable_filter ip_tables ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables ipv6 vhost_net macvtap macvlan tun kvm uinput sg btusb bluetooth rfkill microcode snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore snd_page_alloc i2c_piix4 r8169 mii ext4 mbcache jbd2 sr_mod cdrom sd_mod crc_t10dif usb_storage sdhci_pci sdhci mmc_core ahci radeon ttm drm_kms_helper drm i2c_algo_bit i2c_core dm_mirror dm_region_hash dm_log dm_mod [last unloaded: scsi_wait_scan] Jun 20 03:08:38 Mail kernel: Pid: 0, comm: swapper Not tainted 2.6.32-220.23.1.el6.centos.plus.x86_64 #1 Jun 20 03:08:38 Mail kernel: Call Trace: Jun 20 03:08:38 Mail kernel: <IRQ> [<ffffffff81069c97>] ? warn_slowpath_common+0x87/0xc0 Jun 20 03:08:38 Mail kernel: [<ffffffff81069d86>] ? warn_slowpath_fmt +0x46/0x50 Jun 20 03:08:38 Mail kernel: [<ffffffff81069d86>] ? warn_slowpath_fmt +0x46/0x50 Jun 20 03:08:38 Mail kernel: [<ffffffff81451c0d>] ? dev_watchdog +0x26d/0x280 Jun 20 03:08:38 Mail kernel: [<ffffffff814519a0>] ? dev_watchdog +0x0/0x280 Jun 20 03:08:38 Mail kernel: [<ffffffff810efbf3>] ? trace_nowake_buffer_unlock_commit+0x43/0x60 Jun 20 03:08:38 Mail kernel: [<ffffffff814519a0>] ? dev_watchdog +0x0/0x280 Jun 20 03:08:38 Mail kernel: [<ffffffff8107cab7>] ? run_timer_softirq +0x197/0x340 Jun 20 03:08:38 Mail kernel: [<ffffffff81072291>] ? __do_softirq +0xc1/0x1d0 Jun 20 03:08:38 Mail kernel: [<ffffffff810958b0>] ? hrtimer_interrupt +0x140/0x250 Jun 20 03:08:38 Mail kernel: [<ffffffff8100c24c>] ? call_softirq +0x1c/0x30 Jun 20 03:08:38 Mail kernel: [<ffffffff8100de85>] ? do_softirq+0x65/0xa0 Jun 20 03:08:38 Mail kernel: [<ffffffff81072075>] ? irq_exit+0x85/0x90 Jun 20 03:08:38 Mail kernel: [<ffffffff814fc550>] ? smp_apic_timer_interrupt+0x70/0x9b Jun 20 03:08:38 Mail kernel: [<ffffffff8100bc13>] ? apic_timer_interrupt +0x13/0x20 Jun 20 03:08:38 Mail kernel: <EOI> [<ffffffff812f5f9c>] ? acpi_idle_enter_simple+0x114/0x14b Jun 20 03:08:38 Mail kernel: [<ffffffff812f5f98>] ? acpi_idle_enter_simple+0x110/0x14b Jun 20 03:08:38 Mail kernel: [<ffffffff814014a7>] ? cpuidle_idle_call +0xa7/0x140 Jun 20 03:08:38 Mail kernel: [<ffffffff81009e06>] ? cpu_idle+0xb6/0x110 Jun 20 03:08:38 Mail kernel: [<ffffffff814ed686>] ? start_secondary +0x202/0x245 Jun 20 03:08:38 Mail kernel: ---[ end trace 24f15998c117ac8f ]--- Jun 20 03:08:38 Mail kernel: r8169 0000:01:00.0: eth4: link up Jun 20 03:08:39 Mail abrtd: Directory 'oops-2012-06-20-03:08:39-2420-0' creation detected Jun 20 03:08:39 Mail abrt-dump-oops: Reported 1 kernel oopses to Abrt Jun 20 03:08:39 Mail abrtd: Can't open file '/var/spool/abrt/oops-2012-06-20-03:08:39-2420-0/uid': No such file or directory

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Discuss June 2012