Sysadmin Ramblings » SunRay

Using lvm only on specific drives (Reading all physical volumes. This may take a while…)

uphill — Wed, 01 Jul 2009 18:50:21 +0000

On our kvm hypervisor we have several vm’s using fibre channel for storage. The hypervisor has to see all the devices, but each device has it’s own lvm so when the hypervisor boots, it tries to read all of them.

To fix this i restricted lvm to only use sda (documented in lvm.conf). If you are stuck at the vgscan stage
Reading all physical volumes. This may take a while…
Then you probably need to do something similar to this. devices { dir = "/dev" scan = [ "/dev" ] preferred_names = [ ] filter = [ "a|/dev/sda.*|", "r|.*|" ] } The filter line is the important one. After that you’ll need to rebuild initrd to pickup the modified lvm.conf. I usually cheat and use the kernel’s method for that. [root@server0 lvm]# rpm -q kernel --scripts |grep mkinitrd /sbin/new-kernel-pkg --package kernel --mkinitrd --depmod --install 2.6.18-128.1.16.el5 || exit $? [root@server0 lvm]# Hope that helps.

GNOME kiosk session in SunRay SRSS 4.1 on RHEL5

uphill — Sat, 06 Jun 2009 04:51:03 +0000

After installing SRSS we tried to setup a gnome kiosk session. There were no prototypes for this installed. After scouring the net we only found an example of something that didn’t work :-(. Here is our config.

/etc/opt/SUNWkio/sessions/gnome.conf KIOSK_SESSION_EXEC=/etc/opt/SUNWkio/sessions/gnome/gnome-kiosk KIOSK_SESSION_LABEL="GNOME" KIOSK_SESSION_ICON= KIOSK_SESSION_DESCRIPTION="GNOME" KIOSK_SESSION_APPLAUNCHER=/opt/SUNWkio/lib/kioskapplaunch KIOSK_SESSION_PROTOTYPE=gnome KIOSK_SESSION_ARGS=/usr/bin/gnome-session

/etc/opt/SUNWkio/sessions/gnome/gnome-kiosk #!/bin/sh $* ^*make sure gnome-kiosk is executable. It’s a very silly script, but it seems that this is required, when we set KIOSK_SESSION_EXEC to gnome-session it didn’t work.

The only other thing we did was make a directory called gnome in prototypes (/etc/opt/SUNWkio/prototypes/gnome)

After making these scripts the kiosk steps in the sunray manual worked.

utpolicy -a -z both -k pseudo

Our SunRays now login to a gnome session if there is no card in the sunray. We locked down the session using sabayon. Hope that helps.

Sound under KDE on SunRay

uphill — Tue, 24 Jan 2006 21:05:47 +0000

We were specifically trying to get skype to work on a sunray. We got audio working by configuring kde.

If you start kcontrol Select: Sound & Multimedia Sound System Hardware We selected Full Duplex and changed the default audio location to that of AUDIODEV (/tmp/SUNWut/dev/utaudio/ut-dsp-0 Apply the changes Then restart the application with artsdsp

[user@host]: artsdsp skype

ICE default IO error handler doing an exit(), pid = 753, errno = 0

volume_open: error opening /dev/mixer: No such device

After this, audio works. We still don’t have microphone working though… Other KDE applications seem to prefer this method, starting via artsdsp

Xnewt dying on SunRay 3.0

uphill — Mon, 14 Nov 2005 21:58:37 +0000

After modifying gdm.conf we noticed that Xnewt would not start properly on occassion. Xnewt was not ignoring the vt[0-9] command line option sent to X to specify a virtual console on which to run. We removed this from the command line sent to Xnewt and renamed Xnewt to Xnewt.sun

pushd /usr/X11R6/bin

mv Xnewt Xnewt.sun

echo << EOF >Xnewt

#!/bin/sh

 

XFIX=`echo $@ |sed -e's/vt[0-9]*//'`

echo `date`: ARGS=$@ XFIX=$XFIX >>/var/log/Xnewt

 

exec Xnewt.sun $XFIX -fp unix/:7100

EOF

chmod 755 Xnewt

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