users October 2012

users@lists.fedoraproject.org

200 participants
212 discussions

Unable to run systemd in an LXC / cgroup container.
by Michael H. Warfield 21 Oct '12

21 Oct '12

Hello, This is being directed to the systemd-devel community but I'm cc'ing the lxc-users community and the Fedora community on this for their input as well. I know it's not always good to cross post between multiple lists but this is of interest to all three communities who may have valuable input. I'm new to this particular list, just having joined after tracking a problem down to some systemd internals... Several people over the last year or two on the lxc-users list have been discussions trying to run certain distros (notably Fedora 16 and above, recent Arch Linux and possibly others) in LXC containers, virualizing entire servers this way. This is very similar to Virtuoso / OpenVZ only it's using the native Linux cgroups for the containers (primary reason I dumped OpenVZ was to avoid their custom patched kernels). These recent distros have switched to systemd for the main init process and this has proven to be disastrous for those of us using LXC and trying to install or update our containers. To put it bluntly, it doesn't work and causes all sorts of problems on the host. To summarize the problem... The LXC startup binary sets up various things for /dev and /dev/pts for the container to run properly and this works perfectly fine for SystemV start-up scripts and/or Upstart. Unfortunately, systemd has mounts of devtmpfs on /dev and devpts on /dev/pts which then break things horribly. This is because the kernel currently lacks namespaces for devices and won't for some time to come (in design). When devtmpfs gets mounted over top of /dev in the container, it then hijacks the hosts console tty and several other devices which had been set up through bind mounts by LXC and should have been LEFT ALONE. Yes! I recognize that this problem with devtmpfs and lack of namespaces is a potential security problem anyways that could (and does) cause serious container-to-host problems. We're just not going to get that fixed right away in the linux cgroups and namespaces. How do we work around this problem in systemd where it has hard coded mounts in the binary that we can't override or configure? Or is it there and I'm just missing it trying to examine the sources? That's how I found where the problem lay. Regards, Mike -- Michael H. Warfield (AI4NB) | (770) 985-6132 | mhw(a)WittsEnd.com /\/\|=mhw=|\/\/ | (678) 463-0932 | http://www.wittsend.com/mhw/ NIC whois: MHW9 | An optimist believes we live in the best of all PGP Key: 0x674627FF | possible worlds. A pessimist is sure of it!

2 1

Konqueror: cannot connect to X server
by Mickey 21 Oct '12

21 Oct '12

Fedora 17 Apps won't start as SU , because they cannot connect to X server. I can echo $DISPLAY , I get :0.0 as SU.

2 1

Enabling DMA for atapi cd/dvd/rw
by JD 21 Oct '12

21 Oct '12

# hdparm -d1 /dev/sr0 /dev/sr0: setting using_dma to 1 (on) HDIO_SET_DMA failed: Inappropriate ioctl for device HDIO_GET_DMA failed: Inappropriate ioctl for device So, could someone please advise how to enable DMA for the cd/dvd/rw drive? It would sure help my aging laptop to play high quality 1080p HD movies. PS: Keep in mind that ide-scsi emulation is used on all modern linux kernels since way back ????

2 1

Fwd: F17- Firefox is not rendering correct colours
by antonio montagnani 21 Oct '12

21 Oct '12

Today I shot some pictures with my DSLR, I transferred to my computer and made some work on them by the GIMP. I loaded some images to my facebook account but when I see some image I get some blueish colour. In Shotwell colours are fine, same as in the Gimp: furthermore on a different computer running Ubuntu, colours are fine. Any idea??? -- Antonio M Skype: amontag52 Linux Fedora F17 (Beefy Miracle) on Acer 5720 http://lugsaronno.altervista.org http://www.campingmonterosa.com

4 7

NetworkManager causin problems with DNS settings.
by Mickey 21 Oct '12

21 Oct '12

Fedora 17 NetworkManager is changing Nameserver in resolv.conf to 192.168.1.1 my Router gateway and my setting in /etc/sysconfig/network- scripts/cfg-p128p1 (eth0) are as such. UUID="e676da02-6018-4567-8c0f-ab849ac673cb" NM_CONTROLLED="yes" HWADDR="78:E3:B5:95:98:2C" BOOTPROTO="dhcp" DEVICE="p128p1" ONBOOT="yes" PEERDNS=yes DNS1=8.8.8.8 DNS2=8.8.0.0 How do I get NM to accept the above settings ?

6 7

None
by gary clark 20 Oct '12

20 Oct '12

http://duluthphotographers.com/700468.php

14 21

keyboard failure that doesn't seem to be hardware
by Paul Allen Newell 20 Oct '12

20 Oct '12

Hello: I am doing my first F17 install on i686 Xfce and, for the most part, everything is coming up nicely. However, I am noticing that sometimes the keyboard becomes unresponsive. I can't seem to find a reason, it just happens. My first sense was that it was a hardware problem. However, one time I decided to let the session time out so that when I had moved the mouse, I got the "re-enter passwd" dialog box to get back to my session. As could be expected, I couldn't type my password in. So I tried selecting new user login and, lo and behold, if I clicked on myself, it let me enter a password. However, it then immediately went back to the "re-enter passwd" from the session time out and the keyboard was dead. Net result is I find it hard to believe that the hardware is the problem. But I can't figure out what would be locking up the keyboard so that it would appear dead. I also note that I had multiple windows open plus firefox and the keyboard wouldn't work in any of them, so it isn't shell based. One time I ran a tail of /var/log/messages and nothing showed up in it once the keyboard died and it did give me other standard messages when I waited about a half hour to new messages to be flushed to the file. Any ideas about where to start? Everything I spotted online didn't seem to relate ... and I am having a hard time figuring out what a good set of search terms for this problem is. Thanks in advance, Paul

12 45

CFT: A Puppet module generator
by Renich Bon Ciric 19 Oct '12

19 Oct '12

Ok, I need some help, from the #Fedora or #Redhat Communities. There is a really neat project called cft: http://cft.et.redhat.com/ The maintainer said he hasn't had time to develop it further. So, we need some ruby wiz to take over and adopt the project. So, +David Lutterkort told me he would be happy if somebody could help out with it. So, do you like #Ruby and you're willing to take on a #FOSS project? Here's your chance. One way to help is to move this message around so, please, re-share, re-send or re-whateveryouneedtodo so the message is delivered. I am willing to maintain/co-maintain the package(s) on the Fedora repos. So, anyone? Thanks! -- It's hard to be free... but I love to struggle. Love isn't asked for; it's just given. Respect isn't asked for; it's earned! Renich Bon Ciric http://www.woralelandia.com/ http://www.introbella.com/

1 0

X hangs when screen blanks on docked laptop
by Matthew Saltzman 19 Oct '12

19 Oct '12

I have a Dell Latitude E6410 with nVidia graphics, using the nouveau driver in F17 and gnome-shell. When the machine is docked and using the remote display, all is well until the screen blanker times out. After that, I'm unable to wake the screen up. Opening the lid doesn't help (not too surprising, given that the main screen is set to be off when the remote is attached); switching to a VC doesn't help (which is surprising). The keyboard still works, so I can blindly switch to a VC and reboot, but it's not workable to have to reboot after every 10 minutes of idle time. I created a second userid and tried working with that, and the problem does not recur there, so it apparently has something to do with the configuration of my main userid. I had at one point installed the weather extension and the system monitor extension, but they were problematic so I deleted them (before I tried the experiment with the other userid). That fixed a problem where the screen wouldn't wake up even when undocked, but hasn't fixed this. So any idea what I should look for in my userid's configuration files to fix this? TIA. -- Matthew Saltzman Clemson University Math Sciences mjs AT clemson DOT edu

2 2

Re: Switch eth0 and eth1, how?
by JD 19 Oct '12

19 Oct '12

On 10/19/2012 07:53 PM, Michael D. Setzer II wrote: > I recently changed a machine using this method with no problem. > The disk had been moved after a motherboard failed, and the nic > was coming up as eth2 instead of eth0. Had two previous nics > listed, and just removed those lines from the file, and manually > changed the eth2 to eth0. Did you make sure the edit-out > numbers were exactly the same, if they are off at all, it goes to > creating a name. > > Yes, they indeed are the same, but the latest post about using ifrename did the trick for me.

1 0

← Newer
1
...
7
8
9
10
11
12
13
...
22
Older →

Jump to page: