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[Xen-users] disk space at dom0 - problem w/ quick and dirty solution

  • To: XEN User - listmembers <xen-users@xxxxxxxxxxxxxxxxxxx>
  • From: Stephan Seitz <s.seitz@xxxxxxxxxxxx>
  • Date: Wed, 04 Jul 2007 14:19:21 +0200
  • Delivery-date: Wed, 04 Jul 2007 05:17:53 -0700
  • List-id: Xen user discussion <xen-users.lists.xensource.com>


if dom0 ( /var/lib/xen ) is too small to take the save states of all running 
domU's, really
ugly things occur if a reboot / xend save eats up the whole disk space.
As recently seen ;) , the domU disks (located on one pv/vg on the same machine) 
can't be touched
by dm-mapper anymore and are going to be inconsistent to the device-mapper.
not a big issue, but really disturbing. another issue is, some xml (someone 
could shed a light on
me, which exactly) cannot be written and xen/xend/XendStateStore.py refuses to 
work around line
110 (in def load_state(self, cls): ). So xend isn't able to start over. As I 
didn't know which
xml structure is needed by xend restore, i solved this by deleting the 
save/suspend-images and
temporarily adding a return{} directly after load_state(self, cls): to skip the 
restore completely.
after starting/stopping xend twice, i removed this return{} and was able to 
start the domU's

Just a report, if someone encountered similar problems by getting out of 
diskspace in dom0.

Stephan Seitz
Senior System Administrator

*netz-haut* e.K.
multimediale kommunikation

zweierweg 22
97074 würzburg

fon: +49 931 2876247
fax: +49 931 2876248

web: www.netz-haut.de <http://www.netz-haut.de/>

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