[xen-tools-dev] "iscsi" and a prereq.

Michel Longuich michel at longui.ch
Thu Aug 26 17:35:55 CEST 2010


Hey guys,

Found an undocumented prereq: libfile-slurp-perl (debian package)


anyways; I had a look at what was in the back of my mind as 'the iscsi 
thing' <> xt 4.0/4.1. It's basically all about --image-dev --swap-dev

  #
  #  Physical volumes
  #
  #  root  = '/dev/full-dev ro'

>   That's wrong.

  disk  = [ 'phy:/dev/iscsi/iqn.2008-10.net.hostice:is0.vps31/part,sda1,w'
  , 'phy:/dev/iscsi/iqn.2008-10.net.hostice:is0.vps31-swap/part,sda2,w'

>   That looks OK except for a missing "]".


pre-4.1 there used to be an issue where a device like 
'phy:/dev/iscsi/iqn.2008-10.net.hostice:is0.vps31/part,sda1,w' just 
wouldn't come through when used with the xen-create-image command. So 
not really iscsi specific. Just very ..:.::..:-ish

Anyways. Steve fixed that between 4.0 and 4.1.

What I used to do (experimenting) was use an iscsi share for vm's which 
needed to be able to instantly migrate. It wasn't anything special. Some 
pre-shared targets of either 9 or 18GB / 1 or 2GB swap. I needed those 
shares to be used with xen-create-image obviously.

As I said before I quit using this setup after a few random disconnects 
which crashed vm's and even forced a couple of Dom0 reboots. (sort of 
undesired behaviour as far as I'm concerned)

cheers,
Michel


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