Re: [Xen-devel] Xen domain save file should be deleted/renamed after successful restore operation

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Michal Novotny writes ("[Xen-devel] Xen domain save file should be 
deleted/renamed after successful restore operation"):
> Hello everybody,
> I have found a problem about the checkpoint file (saved domain file) 
> that has been already used to restore a domain. The second time 
> restoring domain from the same saved domain file will result in disk 
> corruption and kernel of VM saved in this save file is in an 
> inconsistent state then.

Yes.  Don't do that then.

> You can replicate this by eg. creating some PV domain, saving it using 
> `xm save` command to /var/lib/xen/save directory and restoring it again. 
> The domain save file is not deleted or anything so when rebooting dom0 
> `xendomains` script starts this machine again but this results in disk 
> corruption of disk used for this guest.

In particular, the /var/lib/xen/save directory is for use by the
automatic domain management scripts like `xendomains'.  Do not
manually save a domain into it and absolutely do not restore a domain
from it manually!

Ian.

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel