Discuss August 2016

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131 participants
135 discussions

Maybe OT - Centos 5 SATA JMicron JMB361 SATA
by Ken Smith 10 Aug '16

10 Aug '16

Hi All, I know Centos 5 is almost EOL and all this is old but.... I'm helping a colleague who has moved a Centos 5 install on an IDE disk to system with a Foxconn M'board. His idea is to use the SATA interface that's on the Foxconn. The thing boots OK and then gets into a loop trying to start the interfaces to the SATA disks. Oceans of stuff like this in /var/log/messages Aug 7 04:23:32 filestore kernel: ata1: hard resetting link Aug 7 04:23:32 filestore kernel: ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310) Aug 7 04:23:32 filestore kernel: ata1.00: configured for UDMA/33 Aug 7 04:23:32 filestore kernel: ata1.01: configured for UDMA/33 Aug 7 04:23:32 filestore kernel: ata1: EH complete Aug 7 04:24:02 filestore kernel: ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen Aug 7 04:24:02 filestore kernel: ata1.00: cmd 25/00:08:00:88:e0/00:00:e8:00:00/e0 tag 0 dma 4096 in Aug 7 04:24:02 filestore kernel: res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) Aug 7 04:24:02 filestore kernel: ata1.00: status: { DRDY } I have limited the SATA speed to 1.5G with a kernel param in Grub to see if that helps. After a few hours the thing seems to settle down and can see this cat /proc/partitions | grep sd 8 0 1953514584 sda 8 16 1953514584 sdb 8 32 1953514584 sdc But the devices are non-functional. eg:- smartctl -a /dev/sda Smartctl open device: /dev/sda failed: No such device and fdisk /dev/sda Unable to open /dev/sda So I reckon the JMicron JMB361 controller [02:00.0 SATA controller: JMicron Technology Corp. JMB361 AHCI/IDE (rev 02)] is not something that Centos 5 is very keen on. Its loaded the ahci module for it uname says Linux filestore 2.6.18-411.el5 #1 SMP Mon Jul 11 18:16:41 CDT 2016 i686 i686 i386 GNU/Linux This thread -> https://bugzilla.redhat.com/show_bug.cgi?id=462425 <- suggests that a fix may have been backported from 2.6.27 Does this look familiar to anyone? And is there a remedy or would I be best to swap in a better SATA controller in there? Suggestions?? Thanks Ken -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

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Regarding using CentOS on Commercial Appliance
by Akshat Kakkar 10 Aug '16

10 Aug '16

Hi All!I am builiding a firewall appliance based on CentOS. I am using CentOS as it is with some packages removed and some configuration done to security harden the appliance. Over and above this I will be installing Apache Web Server and Tomcat to run my web application which will give a web interface to configure the iptables in the appliance. There is no development done in iptables. It is used as available in its latest version online. As Tomcat will be running as non-root so it cant actually write the iptables rule. For writing iptables rules I will be using C++ executables with SUID bit set.Once this will be done, I am planning to Commercialise it. Am I allowed to do so without revealing my web application code and the C++ executable code (for iptables)? I know all the CentOS packages, etc. might fall in GPL and as a result I should be supplying source code of all the packages in CentOS. What else is expected from me? Thanks.

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ssh & ksh question
by m.roth＠5-cent.us 09 Aug '16

09 Aug '16

I need to run a report, source file on system 1, on system 2. I'd like to do this in one script, not have a second script to run it. Now cat script | ssh system2 works fine. But no matter what I've tried, it gags on ssh system2 <<EOF blah, blah EOF. Mostly, I have a multiline awk script in the script, with \ at the end of each line... *but* I think it's seeing "\n" as an eol, and complaining, of course. Suggestions? mark

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Eclipse rpms
by Gordon Messmer 09 Aug '16

09 Aug '16

I use Fedora for most workstations, so I've only just noticed that CentOS and EPEL don't appear to have packages for eclipse. All of the Google search results I've seen that contain a process for installation merely document downloading the tarball from eclipse.org. Is there a yum repo for these packages? Does CentOS not rebuild the Red Hat software collections? https://access.redhat.com/discussions/933183

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Centos 7 - how to resurrect /dev/fb0? Or an alternative to fbterm for 256 color tty terminals?
by Nick Cammorato 09 Aug '16

09 Aug '16

Hi Everyone! I've been trying to rediscover the lost art of appliance-ification. SystemD is actually pretty amenable to masking tty1 and spawning a program instead of login which makes a config console a rather easy thing to do (mostly). Have that bit done, no problem. Happily spawning a rather locked down program. However, you seem to be limited in terms of color palette, creating a new take on the classic how do you get a 256 color terminal on a tty problem (the related, how do you change the terminal resolution problem seems solved via boot param). The old way(that I used) was to just wrap whatever in fbterm, but fbterm is missing. I can compile and package and install it no problem, but apparently there's no longer a framebuffer for it to attach to - /dev/fb0 is gone - so it can't actually run. There doesn't appear to be anything that would create /dev/fb0 either - It looks like nothing was compiled into the default kernel. The vga16fb module is available if you install a xen kernel from centos-xen, but it's 16 colors. vmwgfx doesn't seem to make a framebuffer either, and it's questionable if that'll work across both virtualbox and vmware in any case. An alternative would be to use xvfb or some such but that's super overweight. So, finally, a question - does anyone know how you solve this today? Best, --Nick Cammorato

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centos 7- boot doesn't wait for startup script to complete
by KM 09 Aug '16

09 Aug '16

Hi All,I have a general question. I have an old rc type startup script that I am still using on CentOS 7. I got it to run by creating the systemd service file... a simple one as shown below, for Myservices. # used to set up the Myservices onstartup[Unit]Description=Start and stop Myservices[Service]Type=oneshotExecStart=/etc/init.d/Myservices startExecStop=/etc/init.d/Myservices stopRemainAfterExit=yes[Install]WantedBy=multi-user.targetThis works. When the server starts Myservices is initiated. However the boot keeps going. When I log in Myservices is still running. it takes about 5 minutes to complete. This is normal. What is different is the boot up used to wait for the service to finish and then continue. Can I use any options in my service file shown above, to make it wait before finishing the boot up? ThanksKM

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Localedef runs but doesn't change locale
by Zach Aufdemberge 09 Aug '16

09 Aug '16

Hello everyone, When I run the command localedef -c -i en_GB -f UTF-8 en_GB.utf-8 the command runs with no errors but running locale still shows: LANG=en_US.UTF-8 LANGUAGE=en_US LC_CTYPE="en_US.UTF-8" LC_NUMERIC="en_US.UTF-8" LC_TIME="en_US.UTF-8" LC_COLLATE="en_US.UTF-8" LC_MONETARY="en_US.UTF-8" LC_MESSAGES="en_US.UTF-8" LC_PAPER="en_US.UTF-8" LC_NAME="en_US.UTF-8" LC_ADDRESS="en_US.UTF-8" LC_TELEPHONE="en_US.UTF-8" LC_MEASUREMENT="en_US.UTF-8" LC_IDENTIFICATION="en_US.UTF-8" LC_ALL= I rebooted the machine just in case, that didn't help Running locale -a shows many options including en_GB and en_GB.utf-8 The only way that I have been able to change the locale is by editing /etc/sysconfig/i18n. If I change that and then reboot it changes the locale. However what confuses me about this is that I can only change to a new locale, I can't seem to go back to a previous locale. For example, I started with en_US, changed it to en_GB which worked. Then I tried to change it back to en_US and nothing happened. After that I decided to try to see if it was only failing with en_US or if it would always fail. So I tried changing from en_GB to en_NZ which worked. Then I tried to go from en_NZ to en_US which failed. At this point I don't care as much about getting the right locale. I just want to know why it will change to something new, but not change back to a previous locale. I have tested this on 6.4, 6.5, and 6.8 and get the same results. First I was running it on a VM using QEMU and VMM but I tried it on a physical machine and nothing changed. All of these were fresh installs, the first thing I did after completing the install was try to change the locale. Any advice or explanation is appreciated, thanks in advance. Zach

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LSI SATA MegaRaid & Centos 7 build 1511
by Fawzy Ibrhim 09 Aug '16

09 Aug '16

Dear All; I want to install Centos 7 latest build on NEC Server 5800/120b-2. The installation wizard fails to detect the storage connected to LSI SATA MegaRaid PCI. Centos 5/6 were working fine with this H/W configuration but not the case with Centos 7. Please; advise. Fawzy Ibrahim Redhat Certified Engineer

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Does e2fsck.conf contain "broken_system_clock = 1" per default on CentOS7?
by Gabriele Pohl 09 Aug '16

09 Aug '16

Hi, on all of my CentOS7 VMs on different hypervisors the config file e2fsck.conf contains the line broken_system_clock = 1 I found this because on all of them, the root partition was not checked triggered by interval setting with tune2fs. Do you see similiar /default/ settings on your machines? Is it an issue only on VMs? I have no CentOS7 host on bare metal to compare. Thanks and cheers, Gabriele

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centos 6.8 creates install to sde instead of sda
by geo.inbox.ignored 08 Aug '16

08 Aug '16

greetings one and all. when attempting to install centos 6.8 to an i386 mid tower, during setup of hard disk partitions, selection is for /dev/sde. if continued, after reboot, error is displayed after 'welcome to centos'. lines read: Checking filesystem fsck.ext4: no such file or directory while trying to open /dev/sda3 /dev/sda3: The superblock could not be read or does not describe a correct ext2 filesystem. If the device is valid and it really contains an ext2 filesystem (and not swap or ufs or something else), then the superblock is corrupt, and you might try running e2fsck with an alternate superblock: e2fsck -h 8193 <device> [FAILED] *** an error occurred during the file system check. *** Dropping you to a shell; the system will reboot *** when you leave the shell. *** Warning -- SELinux is active *** Disabling security enforcement for system recovery. *** Run 'setenforce 1' to reenable. Give root password for maintenance (or type Control-D to continue): entering 'e2fsck -h 8193 /dev/sda3' results with same e2fsck message as above. after reading article; http://www.cyberciti.biz/faq/recover-bad-superblock-from-corrupted-partitio… using command; dumpe2fs /dev/sda3 | grep superblock error message is; dumpe2fs: No such file or directory while trying to open /dev/sda3 Couldn't find valid filesystem superblock. if i enter command; dumpe2fs /dev/sde3 | grep superblock superblock info is shown. why is sde working and not sda? this system has previously held 6.8, but partitioning was off in cylinders so i decided to correct. purchased latest release of partedmagic, booted, created new partitioning by cylinders. under pmagic, when i enter command; dumpe2fs /dev/sda3 | grep superblock superblocks are shown. so, how do i correct what ever to install 6.8 to sda, not sde? any/all answers/suggestions greatly appreciated. tia. -- peace out. CentOS GNU/Linux 7.1511 tc,hago. g . =+= Tired of having your microsoft os hacked? Change to Linux os, used by microsoft hackers. =+= in a world with out fences, who needs gates. =+=

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Discuss August 2016