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34758 discussions

Native ZFS on Linux
by Chuck Munro 02 Jun '15

02 Jun '15

I have a question that has been puzzling me for some time ... what is the reason RedHat chose to go with btrfs rather than working with the ZFS-on-Linux folks (now OpenZFS)? Is it a licensing issue, political, etc? Although btrfs is making progress, ZFS is far more mature, has a few more stable features (especially Raid-z3) and has worked flawlessly for me on CentOS-6 and Scientific Linux-6. I used ZFS for a couple of large file servers with no problems. The only annoying part was having to manually install the kernel module each time a kernel update was issued. Because FreeBSD has built-in drivers for LSI cards (I use JBOD mode) and strong ZFS support, I've switched to FreeNAS with it's default native ZFS and driver support for LSI. I would have preferred to stick with CentOS, but FreeNAS just made things easier to manage. It also seems about twice as fast as ZFS on Linux (same hardware), but that may simply be a tuning issue. Is there any chance that a native ZFS (rather than btrfs) will ever emerge in RHEL/CentOS? Just curious, because I'd love to return to CentOS/SL next time I build large file servers. As an aside, I have used only WD Black and WD RedPro drives for RAID, and not had any issues. Green drives are scary :-) Chuck

11 21

[OT] recover/reset 'owner' password on win7 os
by g 02 Jun '15

02 Jun '15

i inherited a toshiba satellite l455d with win7 installed, install cd lost. 'owner' passworded, forgotten by previous owner. 'guest' is does not have a password. i want remove unneeded music software and files and other crud before i defrag the drive so as to have more room to dual boot linux. i would wipe win7, but not an option at this time. i booted laptop, pulled 'ntpassword', copied files to a usb stick, tried to run; X:syslinux.exe -ma X: as 'guest', it failed. how can i make usb stick bootable from linux? any/all suggestion/help is greatly appreciated. thanks in advance. -- peace out. If Bill Gates got a dime for every time Windows crashes... ...oh, wait. He does. THAT explains it! in a world with out fences, who needs gates. CentOS GNU/Linux 6.6 tc,hago. g .

3 6

Project Management Software
by H 01 Jun '15

01 Jun '15

I have a need to use a project management software package under Centos 6.6 and have started looking at ProjectLibre which is a Java package. Unfortunately it seems to have shortcomings when it comes to following up projects and my current understanding is that it falls short of Microsoft Project 2010, i.e., a previous version. Does anyone have experience with this type of software and what would you recommend? Thank you in advance.

4 3

Redistributing CentOS as part of a package
by Digimer 01 Jun '15

01 Jun '15

Hi all, I'm developing a program that is not a distro, per-se, but sort of acts like one. Basically, it's a modified CentOS ISO with some extra RPMs added, unneeded RPMs removed and containing a modified boot screen and install selection list. The list says "CentOS", so a user knows the installed appliance will be based on CentOS, but it also has our project's branding along with it (splash screen, our custom installer's images and text, etc). We do not modify /etc/issue, /etc/redhat-release or so one. So I wanted to ask the community if this is OK, as I think I'm sitting in something of a gray area between a straight custom CentOS ISO and a new distro. If this isn't the right place to ask, a pointer to the right place would be much appreciated. I am happy to answer any further questions (here or in private) from the CentOS team if it would help clarify things. Cheers! -- Digimer Papers and Projects: https://alteeve.ca/w/ What if the cure for cancer is trapped in the mind of a person without access to education?

2 3

nginx conflicting server name ignored warning
by Tim Dunphy 01 Jun '15

01 Jun '15

Guys, I'm getting a strange warning whenever I do a config test or a restart of nginx 1.0.15 [root@aoadbld00032lb nginx]# nginx -t nginx: [warn] conflicting server name "aoadbld00032lb.company.com" on 0.0.0.0:80, ignored nginx: [warn] conflicting server name "logs.pcf.company.com" on 0.0.0.0:80, ignored nginx: the configuration file /etc/nginx/nginx.conf syntax is ok nginx: configuration file /etc/nginx/nginx.conf test is successful And as far as I can tell I only have one server_name directive in the whole config: [root@aoadbld00032lb nginx]# grep -r server_name * conf.d/kibana.conf: server_name aoadbld00032lb.company.com logs.pcf.company.com; fastcgi_params:fastcgi_param SERVER_NAME $server_name; scgi_params:scgi_param SERVER_NAME $server_name; uwsgi_params:uwsgi_param SERVER_NAME $server_name; It's more of an annoyance than any kind of real problem, as far as I can tell. Because the site I'm trying to put up with it appears to be working. I'm using this host as a logstash server. But does anybody have any ideas as to why this may be happening? Or of any potential problems that this may cause? Thanks, Tim -- GPG me!! gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B

1 0

why network interface had same mac address in pxe mode
by Firxiaowork 01 Jun '15

01 Jun '15

Hi all: when I reinstall os by cobbler on the machine which two network interfaces config to bond mode=0, and system is centos 7.1 , I saw this error: https://github.com/cobbler/cobbler/issues/1478 <https://github.com/cobbler/cobbler/issues/1478> finally, I unplug one network interface and pxe work well ! what I confuseed is why network interfaces do not restore to original mac in pxe mode ? why the two network interfaces has same mac address even on pxe mode? what can trigger this problem ? thank you —————— Firxiao

1 0

Guest agent on CentOS 5 VM
by Robert Fitzpatrick 01 Jun '15

01 Jun '15

Is it possible to get the QEMU guest agent on a CentOS 5.11 virtual machine? Has anyone installed from source? I am running the VM on a CentOS 7 virtual host with qemu-1.5.3. -- Robert

1 0

Using Mariadb databases from old server
by Timothy Murphy 01 Jun '15

01 Jun '15

I'm running CentOS-7, but I left some MySQL databases on my old CentOS-6.5 partition which I'd like to retrieve. I assume they are contained in the file /var/lib/mysql/ibdata1 ? Could I just copy this file to /var/lib/mysql in CentOS-7? Or is there some way Mariadb or phpMyAdmin can import mysql databases from a server that is no longer running? -- Timothy Murphy gayleard /at/ eircom.net School of Mathematics, Trinity College, Dublin

4 6

Redistributing pre-installed CentOS
by Matt 01 Jun '15

01 Jun '15

Hello List, I've got a project that will involve distributing pre-configured CentOS servers to customer sites. No packages have been modified, and it's a pretty straightforward content caching server. The packages are all from CentOS repositories, nginx from EPEL, and Puppet packages from Puppet Labs. The only shell on these boxes is pretty locked down however, and I know some licenses, like Apache for example, require displaying the license. Any tips on the least cumbersome way to avoid violating any of the involved licenses? I remember many years ago, I think Debian had a command to display various licenses in a consolidated way. Is there a similar facility available, or a page we could link to? -Matt

1 0

gcc34 from centos 6 install on CentOS 7
by Jerry Geis 29 May '15

29 May '15

is there any issue with installing the compat-gcc34 package from centos 6 on centos 7 ? Thanks, jerry

2 1

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