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what to do about [abrt] full crash report kernel taint?
by Thomas Burns 17 Jan '12

17 Jan '12

I have a machine with a recent install of centos (2.6.32-220.2.1.el6.x86_64 kernel). It crashed 3 times this week, and sent emails like the one below complaining about kernel taint. I've gone back to a previous kernel to see if that helps, but otherwise I don't know how to investigate this. What should I do? Here's stuff from the log and one of the emails: log:******************************** # grep -e '12 10:16' -e '10 14:46' -e '9 15:44' /var/log/messages Jan 9 15:44:11 name kernel: ------------[ cut here ]------------ Jan 9 15:44:11 name kernel: WARNING: at kernel/sched.c:5914 thread_return+0x232/0x79d() (Not tainted) Jan 9 15:44:11 name kernel: Hardware name: Precision WorkStation 490 Jan 9 15:44:11 name kernel: Modules linked in: fuse nfs lockd fscache nfs_acl auth_rpcgss autofs4 sunrpc p4_clockmod freq_table speedstep_lib ipv6 ppdev parport_pc parport sg microcode dcdbas serio_raw i2c_i801 iTCO_wdt iTCO_vendor_support tg3 snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore snd_page_alloc i5000_edac edac_core i5k_amb shpchp ext4 mbcache jbd2 sd_mod crc_t10dif sr_mod cdrom firewire_ohci firewire_core crc_itu_t ahci pata_acpi ata_generic ata_piix nouveau ttm drm_kms_helper drm i2c_algo_bit i2c_core mxm_wmi wmi video output dm_mirror dm_region_hash dm_log dm_mod [last unloaded: mperf] Jan 9 15:44:11 name kernel: Pid: 17, comm: ksoftirqd/3 Not tainted 2.6.32-220.2.1.el6.x86_64 #1 Jan 9 15:44:11 name kernel: Call Trace: Jan 9 15:44:11 name kernel: [<ffffffff81069997>] ? warn_slowpath_common+0x87/0xc0 Jan 9 15:44:11 name kernel: [<ffffffff810699ea>] ? warn_slowpath_null+0x1a/0x20 Jan 9 15:44:11 name kernel: [<ffffffff814eccc5>] ? thread_return+0x232/0x79d Jan 9 15:44:11 name kernel: [<ffffffff81071b35>] ? ksoftirqd+0xd5/0x110 Jan 9 15:44:11 name kernel: [<ffffffff81071a60>] ? ksoftirqd+0x0/0x110 Jan 9 15:44:11 name kernel: [<ffffffff810906a6>] ? kthread+0x96/0xa0 Jan 9 15:44:11 name kernel: [<ffffffff8100c14a>] ? child_rip+0xa/0x20 Jan 9 15:44:11 name kernel: [<ffffffff81090610>] ? kthread+0x0/0xa0 Jan 9 15:44:11 name kernel: [<ffffffff8100c140>] ? child_rip+0x0/0x20 Jan 9 15:44:11 name kernel: ---[ end trace ce943d42785388df ]--- Jan 9 15:44:12 name abrtd: Directory 'oops-2012-01-09-15:44:12-1647-0' creation detected Jan 9 15:44:12 name abrt-dump-oops: Reported 1 kernel oopses to Abrt Jan 9 15:44:12 name abrtd: Can't open file '/var/spool/abrt/oops-2012-01-09-15:44:12-1647-0/uid': No such file or directory Jan 9 15:44:20 name kernel: Bridge firewalling registered Jan 9 15:44:32 name abrtd: Sending an email... Jan 9 15:44:32 name abrtd: Email was sent to: root@localhost Jan 9 15:44:32 name abrtd: New dump directory /var/spool/abrt/oops-2012-01-09-15:44:12-1647-0, processing Jan 10 14:46:44 name kernel: ------------[ cut here ]------------ Jan 10 14:46:44 name kernel: WARNING: at kernel/sched.c:5914 thread_return+0x232/0x79d() (Not tainted) Jan 10 14:46:44 name kernel: Hardware name: Precision WorkStation 490 Jan 10 14:46:44 name kernel: Modules linked in: fuse nfs lockd fscache nfs_acl auth_rpcgss autofs4 sunrpc p4_clockmod freq_table speedstep_lib ipv6 ppdev parport_pc parport sg microcode dcdbas serio_raw i2c_i801 iTCO_wdt iTCO_vendor_support tg3 snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore snd_page_alloc i5000_edac edac_core i5k_amb shpchp ext4 mbcache jbd2 sd_mod crc_t10dif sr_mod cdrom firewire_ohci firewire_core crc_itu_t ahci pata_acpi ata_generic ata_piix nouveau ttm drm_kms_helper drm i2c_algo_bit i2c_core mxm_wmi wmi video output dm_mirror dm_region_hash dm_log dm_mod [last unloaded: mperf] Jan 10 14:46:44 name kernel: Pid: 2304, comm: thunderbird-bin Not tainted 2.6.32-220.2.1.el6.x86_64 #1 Jan 10 14:46:44 name kernel: Call Trace: Jan 10 14:46:44 name kernel: [<ffffffff81069997>] ? warn_slowpath_common+0x87/0xc0 Jan 10 14:46:44 name kernel: [<ffffffff810699ea>] ? warn_slowpath_null+0x1a/0x20 Jan 10 14:46:44 name kernel: [<ffffffff814eccc5>] ? thread_return+0x232/0x79d Jan 10 14:46:44 name kernel: [<ffffffff81051dc6>] ? enqueue_task+0x66/0x80 Jan 10 14:46:44 name kernel: [<ffffffff814ee50d>] ? schedule_hrtimeout_range+0x13d/0x160 Jan 10 14:46:44 name kernel: [<ffffffff81090d76>] ? add_wait_queue+0x46/0x60 Jan 10 14:46:44 name kernel: [<ffffffff8118b895>] ? __pollwait+0x75/0xf0 Jan 10 14:46:44 name kernel: [<ffffffff8118b079>] ? poll_schedule_timeout+0x39/0x60 Jan 10 14:46:44 name kernel: [<ffffffff8118bdcb>] ? do_sys_poll+0x45b/0x520 Jan 10 14:46:44 name kernel: [<ffffffff8118b820>] ? __pollwait+0x0/0xf0 Jan 10 14:46:44 name kernel: [<ffffffff8118b910>] ? pollwake+0x0/0x60 Jan 10 14:46:44 name kernel: [<ffffffff8141be4e>] ? sock_aio_write+0x15e/0x170 Jan 10 14:46:44 name kernel: [<ffffffff8141bcf0>] ? sock_aio_write+0x0/0x170 Jan 10 14:46:44 name kernel: [<ffffffff81175fbb>] ? do_sync_readv_writev+0xfb/0x140 Jan 10 14:46:44 name kernel: [<ffffffff81090a10>] ? autoremove_wake_function+0x0/0x40 Jan 10 14:46:44 name kernel: [<ffffffff81218def>] ? selinux_file_permission+0xbf/0x150 Jan 10 14:46:44 name kernel: [<ffffffff811770e2>] ? do_readv_writev+0x162/0x1f0 Jan 10 14:46:44 name kernel: [<ffffffff8120c1d6>] ? security_file_permission+0x16/0x20 Jan 10 14:46:44 name kernel: [<ffffffff8118c08c>] ? sys_poll+0x7c/0x110 Jan 10 14:46:44 name kernel: [<ffffffff8100b0f2>] ? system_call_fastpath+0x16/0x1b Jan 10 14:46:44 name kernel: ---[ end trace f9f851f2bb55fcd3 ]--- Jan 10 14:46:45 name abrtd: Directory 'oops-2012-01-10-14:46:45-1649-0' creation detected Jan 10 14:46:45 name abrt-dump-oops: Reported 1 kernel oopses to Abrt Jan 10 14:46:45 name abrtd: Can't open file '/var/spool/abrt/oops-2012-01-10-14:46:45-1649-0/uid': No such file or directory Jan 10 14:46:50 name kernel: Bridge firewalling registered Jan 12 10:16:39 name kernel: ------------[ cut here ]------------ Jan 12 10:16:39 name kernel: WARNING: at kernel/sched.c:5914 thread_return+0x232/0x79d() (Not tainted) Jan 12 10:16:39 name kernel: Hardware name: Precision WorkStation 490 Jan 12 10:16:39 name kernel: Modules linked in: fuse nfs lockd fscache nfs_acl auth_rpcgss autofs4 sunrpc p4_clockmod freq_table speedstep_lib ipv6 ppdev parport_pc parport sg microcode dcdbas serio_raw i2c_i801 iTCO_wdt iTCO_vendor_support tg3 snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore snd_page_alloc i5000_edac edac_core i5k_amb shpchp ext4 mbcache jbd2 sd_mod crc_t10dif sr_mod cdrom firewire_ohci firewire_core crc_itu_t ahci pata_acpi ata_generic ata_piix nouveau ttm drm_kms_helper drm i2c_algo_bit i2c_core mxm_wmi wmi video output dm_mirror dm_region_hash dm_log dm_mod [last unloaded: mperf] Jan 12 10:16:39 name kernel: Pid: 1734, comm: Xorg Not tainted 2.6.32-220.2.1.el6.x86_64 #1 Jan 12 10:16:39 name kernel: Call Trace: Jan 12 10:16:39 name kernel: [<ffffffff81069997>] ? warn_slowpath_common+0x87/0xc0 Jan 12 10:16:39 name kernel: [<ffffffff810699ea>] ? warn_slowpath_null+0x1a/0x20 Jan 12 10:16:39 name kernel: [<ffffffff814eccc5>] ? thread_return+0x232/0x79d Jan 12 10:16:39 name kernel: [<ffffffff810958e3>] ? __hrtimer_start_range_ns+0x1a3/0x460 Jan 12 10:16:39 name kernel: [<ffffffff81094dc1>] ? lock_hrtimer_base+0x31/0x60 Jan 12 10:16:39 name kernel: [<ffffffff814ee498>] ? schedule_hrtimeout_range+0xc8/0x160 Jan 12 10:16:39 name kernel: [<ffffffff81094b70>] ? hrtimer_wakeup+0x0/0x30 Jan 12 10:16:39 name kernel: [<ffffffff81095bd4>] ? hrtimer_start_range_ns+0x14/0x20 Jan 12 10:16:39 name kernel: [<ffffffff8118b079>] ? poll_schedule_timeout+0x39/0x60 Jan 12 10:16:39 name kernel: [<ffffffff8118b6e8>] ? do_select+0x578/0x6b0 Jan 12 10:16:39 name kernel: [<ffffffff8104d80d>] ? check_preempt_curr+0x6d/0x90 Jan 12 10:16:39 name kernel: [<ffffffff8118b820>] ? __pollwait+0x0/0xf0 Jan 12 10:16:39 name kernel: [<ffffffff8118b910>] ? pollwake+0x0/0x60 Jan 12 10:16:39 name kernel: [<ffffffff8118b910>] ? pollwake+0x0/0x60 Jan 12 10:16:39 name kernel: [<ffffffff8118b910>] ? pollwake+0x0/0x60 Jan 12 10:16:39 name kernel: [<ffffffff8118b910>] ? pollwake+0x0/0x60 Jan 12 10:16:39 name kernel: [<ffffffff8118b910>] ? pollwake+0x0/0x60 Jan 12 10:16:39 name kernel: [<ffffffff8118b910>] ? pollwake+0x0/0x60 Jan 12 10:16:39 name kernel: [<ffffffff8118b910>] ? pollwake+0x0/0x60 Jan 12 10:16:39 name kernel: [<ffffffff8118b910>] ? pollwake+0x0/0x60 Jan 12 10:16:39 name kernel: [<ffffffff8118b910>] ? pollwake+0x0/0x60 Jan 12 10:16:39 name kernel: [<ffffffff8118c30a>] ? core_sys_select+0x18a/0x2c0 Jan 12 10:16:39 name kernel: [<ffffffff81090a10>] ? autoremove_wake_function+0x0/0x40 Jan 12 10:16:39 name kernel: [<ffffffff81277141>] ? __clear_user+0x21/0x70 Jan 12 10:16:39 name kernel: [<ffffffff811770e2>] ? do_readv_writev+0x162/0x1f0 Jan 12 10:16:39 name kernel: [<ffffffff81012b59>] ? read_tsc+0x9/0x20 Jan 12 10:16:39 name kernel: [<ffffffff8109b629>] ? ktime_get_ts+0xa9/0xe0 Jan 12 10:16:39 name kernel: [<ffffffff810d41b5>] ? __audit_syscall_exit+0x265/0x290 Jan 12 10:16:39 name kernel: [<ffffffff8118c697>] ? sys_select+0x47/0x110 Jan 12 10:16:39 name kernel: [<ffffffff8100b0f2>] ? system_call_fastpath+0x16/0x1b Jan 12 10:16:39 name kernel: ---[ end trace 9c5478b05024d9ed ]--- Jan 12 10:16:40 name abrtd: Directory 'oops-2012-01-12-10:16:40-1660-0' creation detected Jan 12 10:16:40 name abrt-dump-oops: Reported 1 kernel oopses to Abrt Jan 12 10:16:40 name abrtd: Can't open file '/var/spool/abrt/oops-2012-01-12-10:16:40-1660-0/uid': No such file or directory Jan 12 10:16:47 name kernel: Bridge firewalling registered >From email: ************************************** Duplicate check ===== Common information ===== package ----- kernel architecture ----- x86_64 kernel ----- 2.6.32-220.2.1.el6.x86_64 Additional information ===== kernel_tainted_long ----- Taint on warning. kernel_tainted ----- 512 backtrace ----- WARNING: at kernel/sched.c:5914 thread_return+0x232/0x79d() (Not tainted) Hardware name: Precision WorkStation 490 Modules linked in: fuse nfs lockd fscache nfs_acl auth_rpcgss autofs4 sunrpc p4_clockmod freq_table speedstep_lib ipv6 ppdev parport_pc parport sg microcode dcdbas serio_raw i2c_i801 iTCO_wdt iTCO_vendor_support tg3 snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore snd_page_alloc i5000_edac edac_core i5k_amb shpchp ext4 mbcache jbd2 sd_mod crc_t10dif sr_mod cdrom firewire_ohci firewire_core crc_itu_t ahci pata_acpi ata_generic ata_piix nouveau ttm drm_kms_helper drm i2c_algo_bit i2c_core mxm_wmi wmi video output dm_mirror dm_region_hash dm_log dm_mod [last unloaded: mperf] Pid: 1734, comm: Xorg Not tainted 2.6.32-220.2.1.el6.x86_64 #1 Call Trace: [<ffffffff81069997>] ? warn_slowpath_common+0x87/0xc0 [<ffffffff810699ea>] ? warn_slowpath_null+0x1a/0x20 [<ffffffff814eccc5>] ? thread_return+0x232/0x79d [<ffffffff810958e3>] ? __hrtimer_start_range_ns+0x1a3/0x460 [<ffffffff81094dc1>] ? lock_hrtimer_base+0x31/0x60 [<ffffffff814ee498>] ? schedule_hrtimeout_range+0xc8/0x160 [<ffffffff81094b70>] ? hrtimer_wakeup+0x0/0x30 [<ffffffff81095bd4>] ? hrtimer_start_range_ns+0x14/0x20 [<ffffffff8118b079>] ? poll_schedule_timeout+0x39/0x60 [<ffffffff8118b6e8>] ? do_select+0x578/0x6b0 [<ffffffff8104d80d>] ? check_preempt_curr+0x6d/0x90 [<ffffffff8118b820>] ? __pollwait+0x0/0xf0 [<ffffffff8118b910>] ? pollwake+0x0/0x60 [<ffffffff8118b910>] ? pollwake+0x0/0x60 [<ffffffff8118b910>] ? pollwake+0x0/0x60 [<ffffffff8118b910>] ? pollwake+0x0/0x60 [<ffffffff8118b910>] ? pollwake+0x0/0x60 [<ffffffff8118b910>] ? pollwake+0x0/0x60 [<ffffffff8118b910>] ? pollwake+0x0/0x60 [<ffffffff8118b910>] ? pollwake+0x0/0x60 [<ffffffff8118b910>] ? pollwake+0x0/0x60 [<ffffffff8118c30a>] ? core_sys_select+0x18a/0x2c0 [<ffffffff81090a10>] ? autoremove_wake_function+0x0/0x40 [<ffffffff81277141>] ? __clear_user+0x21/0x70 [<ffffffff811770e2>] ? do_readv_writev+0x162/0x1f0 [<ffffffff81012b59>] ? read_tsc+0x9/0x20 [<ffffffff8109b629>] ? ktime_get_ts+0xa9/0xe0 [<ffffffff810d41b5>] ? __audit_syscall_exit+0x265/0x290 [<ffffffff8118c697>] ? sys_select+0x47/0x110 [<ffffffff8100b0f2>] ? system_call_fastpath+0x16/0x1b hostname ----- airy component ----- kernel reason ----- WARNING: at kernel/sched.c:5914 thread_return+0x232/0x79d() (Not tainted) cmdline ----- ro root=/dev/mapper/vg_iprctmp9-lv_root rd_LVM_LV=vg_iprctmp9/lv_root rd_LVM_LV=vg_iprctmp9/lv_swap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us crashkernel=128M rhgb quiet kernel_tainted_short ----- ---------W analyzer ----- Kerneloops time ----- 1326399400 os_release ----- CentOS release 6.2 (Final) -- Q: Why should this email be 5 sentences or less? A: http://five.sentenc.es IPRC-help FAQ: http://auana1.soest.hawaii.edu/wiki/index.php/Faq -- Q: Why should this email be 5 sentences or less? A: http://five.sentenc.es IPRC-help FAQ: http://auana1.soest.hawaii.edu/wiki/index.php/Faq

3 4

bounties for exploits against CentOS?
by Bennett Haselton 17 Jan '12

17 Jan '12

With companies like Facebook and Google offering cash prizes for people who can find security holes in their products, has there ever been any consideration given to offering cash rewards to people finding security exploits in CentOS or in commonly bundled services like Apache? (Provided of course they follow "responsible disclosure" and report the exploit to the software authors and get it fixed.) Obviously the benefit would be that it would increase the chance of a white hat finding and fixing an exploit, before a black hat discovered the same one and used it to attack people's servers. Would there be any other downsides, other than the cost of paying out the prize? I've heard some objections from companies over the years who didn't want to institute a "prize program", but I thought some of those objections didn't make much sense (and indeed some of those companies ended up instituting a prize program after all, a few years later). For example, some people said, "This just encourages people to find exploits and then they might use those exploits to do harm." (The problem with this is if someone has sufficient black-hat incentives for finding an exploit -- either to do malice, or more likely to sell it on the black market -- those incentives *already* exist, so the prize program wouldn't create any additional incentive to use an exploit illegally.) Would you feel safer using CentOS if a bounty program encouraged people to report exploits to the project? Why or why not? I think I would, for the stated reason -- newly discovered exploits are more likely to get reported and fixed, than to be used in the wild. But I'd be curious why anyone might feel less safe if such a program existed. On a related question, suppose that instead of paying for generic exploits against the operating system, you as a webmaster had the option of adding your website to a directory of "bounty" sites, where you would have to put up a bond of $100 to join. Then anyone who could prove that they broke into your server (let's say the "proof" is that they read a world-readable file in the root directory) would collect the $100 prize, if they can describe exactly how they did it and what you need to fix to prevent the attack in the future. That way, if there's ever a weakness in your server, it's more likely to be found by a white hat and reported to you directly so you can fix it, before a black hat finds the same weakness. Would you sign up your webserver? I think I would, and I believe I'd be reducing the risk of a black-hat breakin as a result, but there may be counter-arguments that I'm not thinking of. Bennett

5 11

LVM question
by Jonathan Vomacka 17 Jan '12

17 Jan '12

CentOS Community, It is to my understanding that the /boot partition should never be placed on LVM and should be a physical partition on the hard drives (or on top of a RAID array). Is this an accurate statement? Also please advise if the SWAP filesystem is safe to be placed under LVM, or if this should be a hard partition / hard limit as well. I am unsure if boot issues or any filesystem issues would be caused by placing them on LVM. Please educate me if possible. Thanks in advance for the information!

5 6

Errors in /var/spool/mail/root
by Jonathan Vomacka 17 Jan '12

17 Jan '12

CentOS Experts, I am receiving the following in /var/spool/mail/root. I cleaned out the file and then rebooted and the same errors came back. Is it possible to analyze the data and advise if there is an issue with my system? This is a completely fresh install. From user(a)localhost.srv.net Tue Jan 17 08:11:56 2012 Return-Path: <user(a)localhost.srv.net> X-Original-To: root@localhost Delivered-To: root(a)localhost.srv.net Received: by fst.srv.net (Postfix, from userid 0) id 6F02E2A0078; Tue, 17 Jan 2012 08:11:56 -0500 (EST) Date: Tue, 17 Jan 2012 08:11:56 -0500 From: user(a)localhost.srv.net To: root(a)localhost.srv.net Subject: [abrt] full crash report Message-ID: <4f15739c.MHhrv8Xn0YkMj8Xp%user@localhost> User-Agent: Heirloom mailx 12.4 7/29/08 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Duplicate check ===== Common information ===== architecture ----- x86_64 package ----- kernel kernel ----- 2.6.32-220.2.1.el6.x86_64 Additional information ===== kernel_tainted_long ----- Taint on warning. kernel_tainted ----- 512 backtrace ----- WARNING: at arch/x86/kernel/cpu/mtrr/generic.c:467 generic_get_mtrr+0x11e/0x140() (Not tainted) Hardware name: empty mtrr: your BIOS has set up an incorrect mask, fixing it up. Modules linked in: Pid: 0, comm: swapper Not tainted 2.6.32-220.2.1.el6.x86_64 #1 Call Trace: [<ffffffff81069997>] ? warn_slowpath_common+0x87/0xc0 [<ffffffff81069a86>] ? warn_slowpath_fmt+0x46/0x50 [<ffffffff8102713e>] ? generic_get_mtrr+0x11e/0x140 [<ffffffff81c2bfd1>] ? mtrr_cleanup+0x8c/0x3fd [<ffffffff81c2ae47>] ? get_mtrr_state+0x2ec/0x2fb [<ffffffff81c2a988>] ? mtrr_bp_init+0x1ab/0x1d2 [<ffffffff81c254d8>] ? setup_arch+0x4b8/0xaea [<ffffffff814ec4c5>] ? printk+0x41/0x44 [<ffffffff81c1fc2e>] ? start_kernel+0xdc/0x430 [<ffffffff81c1f33a>] ? x86_64_start_reservations+0x125/0x129 [<ffffffff81c1f438>] ? x86_64_start_kernel+0xfa/0x109 time ----- 1326805905 component ----- kernel hostname ----- fst.srv.net reason ----- WARNING: at arch/x86/kernel/cpu/mtrr/generic.c:467 generic_get_mtrr+0x11e/0x140() (Not tainted) cmdline ----- ro root=/dev/mapper/VolGroup00-root rd_NO_LUKS LANG=en_US.UTF-8 rd_MD_UUID=435d8e67:5dceefb3:85c46cf3:9f6cb0df rd_LVM_LV=VolGroup00/swap SYSFONT=latarcyrheb-sun16 rhgb crashkernel=129M@0M quiet rd_LVM_LV=VolGroup00/root KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM kernel_tainted_short ----- ---------W analyzer ----- Kerneloops os_release ----- CentOS release 6.2 (Final)

2 1

OT: simple server room temp monitor
by Fajar Priyanto 17 Jan '12

17 Jan '12

Hi all, I have a spare USB GSM modem and it's card. I want to setup a very simple server room temperature monitor using it. Anyone has experience to share? - Program required - Script example Currently I have something like this that will send email if temp reaches something. Invoked by cron. #!/bin/bash # lm_sensors must be installed and configured first # This will check the CPU temp and send email # Changelog: # 18 Feb 2009 - created temp=$(/sbin/service lm_sensors status | /bin/grep CPU | /bin/cut -c 15-16) /bin/echo $temp #function to send mail with subject "Hot" func_mail_hot () { /bin/echo $temp | /bin/mail -s "server is hot" notification(a)arinet.org } #function to send mail with subject "Cool" func_mail_cool () { /bin/date >> /var/log/temp.log /bin/echo $temp >> /var/log/temp.log } #testing the temperature of CPU ((temp>40)) && func_mail_hot || func_mail_cool Thank you -- Fajar.

5 4

Error occurred when compiling Vim 7.3 with --enable-perlinterp specified.
by Lenin 17 Jan '12

17 Jan '12

Has anyone compiled Vim 7.3 on CentOS 6.2 64bit ? I got the following error after *configure --enable-perlinterp && make*: ./vim.h:2153:21: error: EXTERN.h: No such file or directory ./vim.h:2154:19: error: perl.h: No such file or directory ./vim.h:2155:19: error: XSUB.h: No such file or directory I've installed perl and perl-devel, but with no luck. Any ideas ? Thanks.

2 2

Re: [CentOS] ia32-libs for 64 bit CentOS
by Elijah Karari 17 Jan '12

17 Jan '12

Let me give you the complete picture so that you may undrstand the predicament am in, the Zimbra collab. suite is completely open source, it has a desktop version which is only available as a .i686 package. see it for yourself: http://www.zimbra.com/downloads/zd-downloads.html i installed compat-libstdc++ but it still doesn't work . This is the error message : WARNING: ia32-libs is missing for x86_64 platform. This package is required to run Zimbra Desktop on 64-bit Linux. Please help..... ----- Original Message ----- From: "Frank Cox" <theatre(a)melvilletheatre.com> To: "Elijah Karari" <elijah.karari(a)edf.co.ke> Sent: Tuesday, January 17, 2012 7:35:05 AM Subject: Re: [CentOS] ia32-libs for 64 bit CentOS Please read what I said: > I've never heard of Zimbra before, so I don't know the difference. I just ran > "Zimbra Desktop 7" through google and found a webpage with 64-bit and 32-bit > downloads on it. Otherwise, if it's open source then you should be able to download the source code and compile it for your system. Since I have no use for this thing myself I didn't bother to bookmark or save any references for it; in fact I may have been looking at something entirely different. Who knows? Check google and follow the first few links -- that's all I did. On Mon, 16 Jan 2012 22:01:59 -0600 (CST) Elijah Karari wrote: > Kindly send me the link where you saw the supposed 64 bit download for linux. > FYI zimbra is an open source mail server. > > ----- Original Message ----- > > From: "Frank Cox" <theatre(a)melvilletheatre.com> > To: "CentOS mailing list" <centos(a)centos.org> > Cc: "Elijah Karari" <elijah.karari(a)edf.co.ke> > Sent: Monday, January 16, 2012 7:51:04 PM > Subject: Re: [CentOS] ia32-libs for 64 bit CentOS > > On Mon, 16 Jan 2012 03:51:46 -0600 (CST) > Elijah Karari wrote: > > > Are you sure its Zimbra Desktop 7 & not Zimbra Collaboration Suite. If you > > really found it, kindly post the link. > > I've never heard of Zimbra before, so I don't know the difference. I just ran > "Zimbra Desktop 7" through google and found a webpage with 64-bit and 32-bit > downloads on it. > > It looks like this is some kind of a commercial program which someone is, > presumably, paying for. Have you considered contacting their technical > support department to ask them about it? > > -- > MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com > www.creekfm.com - FIFTY THOUSAND WATTS of POW WOW POWER! > -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com www.creekfm.com - FIFTY THOUSAND WATTS of POW WOW POWER!

4 4

What software RAID levels are supported with CentOS 6.x?
by Jonathan Vomacka 17 Jan '12

17 Jan '12

CentOS Community, Which RAID levels are supported with a software RAID during the CentOS install? I currently have 4 drives in the system, and am looking to have performance and mirror (like RAID 0+1 or RAID 1+0). Are these raid levels supported?

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NOUVEAU driver video acceleration
by Mark LaPierre 16 Jan '12

16 Jan '12

My Xorg.0.log file says: [ 64601.460] (==) Using default built-in configuration (30 lines) [ 64601.460] (==) --- Start of built-in configuration --- [ 64601.460] Section "Device" [ 64601.460] Identifier "Builtin Default nouveau Device 0" [ 64601.460] Driver "nouveau" [ 64601.460] EndSection [ 64601.460] Section "Screen" [ 64601.460] Identifier "Builtin Default nouveau Screen 0" [ 64601.460] Device "Builtin Default nouveau Device 0" [ 64601.460] EndSection [ 64601.469] GeForce 6 (NV4x) [ 64601.474] (--) NOUVEAU(0): Chipset: "NVIDIA NV4b" I have no xorg.conf file. I have a GeForce 7 (G7x) chip set on my video card. The NOUVEAU driver is misidentifying my chip set. I suspect that this is a major part of the reason why video acceleration is not working. How can I get the NOUVEAU driver to recognize the GeForce 7 (G7x) chip set on my video card? Maybe I don't care about that. How can I get the NOUVEAU driver to support accelerated video? -- _ °v° /(_)\ ^ ^ Mark LaPierre Registerd Linux user No #267004

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Re: [CentOS] VirtIO disk 'leakage' across guests?
by James B. Byrne 16 Jan '12

16 Jan '12

If I log on to the newly cloned guest and I try and rename the vg used by that instance I see this: [root@vm-centos-6 ~]# vgrename vg_vm_centos_6 vg_vm_renamed Couldn't find device with uuid umrIn6-Np0c-NC4Z-MuUo-5TBj-IKRE-XBU0De. Cannot change VG vg_vm_centos_6 while PVs are missing. Consider vgreduce --removemissing. [root@vm-centos-6 ~]# vgreduce vg_vm_centos_6 --removemissing Couldn't find device with uuid umrIn6-Np0c-NC4Z-MuUo-5TBj-IKRE-XBU0De. WARNING: Partial LV lv_pgsql needs to be repaired or removed. WARNING: Partial LV lv_backups needs to be repaired or removed. WARNING: There are still partial LVs in VG vg_vm_centos_6. To remove them unconditionally use: vgreduce --removemissing --force. Proceeding to remove empty missing PVs. The xmldump for this guest instance contains this: <devices> <emulator>/usr/libexec/qemu-kvm</emulator> <disk type='block' device='disk'> <driver name='qemu' type='raw' cache='none'/> <source dev='/dev/vg_vhost01/lv_vm_test-vg-rename'/> <target dev='vda' bus='virtio'/> <alias name='virtio-disk0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </disk> <disk type='block' device='cdrom'> <driver name='qemu' type='raw'/> <target dev='hdc' bus='ide'/> <readonly/> <alias name='ide0-1-0'/> <address type='drive' controller='0' bus='1' unit='0'/> </disk> <controller type='ide' index='0'> <alias name='ide0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> The /dev entries for this vm guest are these: [root@vm-centos-6 ~]# ll /dev/vg_vm_centos_6/* lrwxrwxrwx. 1 root root 7 Jan 16 15:36 /dev/vg_vm_centos_6/lv_root -> ../dm-0 lrwxrwxrwx. 1 root root 7 Jan 16 15:36 /dev/vg_vm_centos_6/lv_swap -> ../dm-1 Searching for the missing uuid I find these files: # find /etc -print | xargs grep 'umrIn6-Np0c-NC4Z-MuUo-5TBj-IKRE-XBU0De' /etc/lvm/archive/vg_vm_centos_6_00005-1429183950.vg: id = "umrIn6-Np0c-NC4Z-MuUo-5TBj-IKRE-XBU0De" /etc/lvm/archive/vg_vm_centos_6_00002-807578735.vg: id = "umrIn6-Np0c-NC4Z-MuUo-5TBj-IKRE-XBU0De" /etc/lvm/archive/vg_vm_centos_6_00004-1687335328.vg: id = "umrIn6-Np0c-NC4Z-MuUo-5TBj-IKRE-XBU0De" /etc/lvm/archive/vg_vm_centos_6_00003-650133889.vg: id = "umrIn6-Np0c-NC4Z-MuUo-5TBj-IKRE-XBU0De" /etc/lvm/archive/vg_vm_centos_6_00006-1907108135.vg: id = "umrIn6-Np0c-NC4Z-MuUo-5TBj-IKRE-XBU0De" /etc/lvm/backup/vg_vm_centos_6: id = "umrIn6-Np0c-NC4Z-MuUo-5TBj-IKRE-XBU0De" Looking in the files of /etc/lvm/archive created by the vgrename command shows a complete mess of lvs from different vm guests non of which have anything in common with the test vm guest, other than they all share the same volume group name. Evidently, cloning vm instances for the purpose of setting up a new vm guest to run with other vms cloned from the same prototype is not a good idea, -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3 -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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