Category: rln

add iso partition to xenserver

link: https://adamscheller.com/systems-administration/xenserver-local-iso-storage-new-partition/

for posterity…

figure out the name of the volume group (something like name-uuid)

pvscan

 

create the new volume

lvcreate -L 150G -n ISOs name-uuid

 

find the volume you just created

 
lvscan |grep ISO

 

create the filesystem

mkfs.ext2 /dev/other-name-uuid/ISOs

 

make the mount point

mkdir /mnt/isos

 

create the repository

xe sr-create name-label=ISOs type=iso device-config:legacy_mode=true device-config:location=/mnt/isos content-type=iso

 

mount the disk

mount -t ext2 /dev/name-uuid/ISOs /mnt/isos

	


	







	

		
		
using vm-snapshot to clone a domU
	


	
	
	

		
CAUTION: with the following the system is up so you risk file loss, data loss, etc. — use at your own risk.


Ideally you would shutdown your domU and use vm-export rather than vm-snapshot.


make a snapshot


 xe vm-snapshot vm=name new-name-label=name-foo


this returns a uuid


  xe vm-export vm=UUID filename=|bzip2 > file.xva.bz2


move the file about


scp 192.168.1.2:file.xva.bz2 file.xva.bz2


import the snapshot


 cat file.xva.bz2 |ssh 192.168.1.1 "bunzip2|/opt/xensource/bin/xe vm-import filename=/dev/stdin"


then recreate the clone from the snapshot template under openxenmanager or other management tool.

	


	





	

		
		
para – virtualize to install from iso
	


	
	
	

		
http://www.xenlens.com/boot-a-guest-vm-from-cd-or-dvd-in-xenserver/ copied for posterity


In order to boot from cd or dvd you need to change the guest virtualization type from HVM (fully virtualized) to PV (paravirtualized).


xe vm-param-set HVM-boot-policy="BIOS order" uuid=[uuid of your vm]


After you have booted from dvd, change back to fully virtualized mode:


xe vm-param-set HVM-boot-policy="" uuid=[uuid of your vm]

	


	





	

		
		
motorola Surfboard 6141 making noise
	


	
	
	

		
I just want to say despite many nay-sayers posting responses to this on other threads there is something in my SB 6141 that vibrates with uploads. (correlated by noise during speed test).


These two links are have the identical report and then other people trying to argue that it’s not the cable modem.  It is the cable modem!  It happens with my the use of my phone over wifi, with my computer, laptop, with all the screens and speakers turned off, there are no headphones involved.


I can modulate the sound during an upload by twisting the case. Viewed from from the top of the case, if I twist the top clockwise and the base counter clockwise I can decrease and eliminate the sound.


Really annoying to have a fanless, ssd desktop and a noisy cable modem.


http://ask.metafilter.com/264261/Cable-Internet-Issues-bad-cable-modem


https://geekhack.org/index.php?topic=46563.0

	


	





	

		
		
animated gif from imagemagick
	


	
	
	

		
put the list of files into a file


ls -1 foo*.jpg > /var/tmp/jpglist




rename randomly named files in numerical order


cat /var/tmp/jpglist|perl -e'$i=1;while ($name=) { chomp $name;$new="week" . $i . ".jpg";system ("cp $name $new");;$i++};'




resize all 13 files named week[number].jpg, add the Week[number].jpg to the lower right hand corner of the file


for file in {1..13} ;do convert -adaptive-resize 256x -gravity SouthEast  -pointsize 30 -annotate 0 "Week $file" week$file.jpg week${file}_sm.jpg; done




stack the jpgs into a animated gif, center the extra vertical space (not all the images are the same height, the tallest image is about 350 pixels).


convert -delay 200 -loop 0 -gravity center -extent 256x350 -coalesce -trim -layers TrimBounds -dispose 2 week[1-9]_sm.jpg week1[0-9]_sm.jpg animated.gif


	


	





	

		
		
citrix receiver linux breaks every couple years
	


	
	
	

		
and I spend a week looking for the answer – the basic searches lead to dead ends with old articles about server side stuff


searches like


citrix receiver COMODO RSA


don’t help you find the “good stuff” 


the good stuff is #5 here: 


https://help.ubuntu.com/community/CitrixICAClientHowTo

quoteing for posterity


 
By default, Citrix Receiver only trusts a few root CA certificates, which causes connections to many Citrix servers to fail with an SSL error. The 'ca-certificates' package (already installed on most Ubuntu systems) provides additional CA certificates in /usr/share/ca-certificates/mozilla/ that can be conveniently added to Citrix Receiver to avoid these errors:

sudo ln -s /usr/share/ca-certificates/mozilla/* /opt/Citrix/ICAClient/keystore/cacerts/
sudo c_rehash /opt/Citrix/ICAClient/keystore/cacerts/