Mailing List Archive: Problem using managed domains

Hello!

I have a problem using managed domains.

I'm trying to to create a new VM object using the method VM.create. In this case xend should
create a config.sxp file for the new managed domain, but I get an error in xend.log
(s. below). The creation of the VM object itself is OK.

API call:
newvm = xen.VM.create(session,{ 'name_label':'testdom',
'memory_static_max' : '10240000',
'memory_dynamic_max' : '10240000'})

Resulting error log:

[2007-04-24 13:35:33 24434] DEBUG (XendDomain:728) Creating new managed domain: dube: af845f26-ed19-fab1-c4ff-05a27c41046d
[2007-04-24 13:35:33 24434] ERROR (XendDomain:302) Renaming /tmp/tmp0PfFzy
Traceback (most recent call last):
File "/usr/lib/python2.4/xen/xend/XendDomain.py", line 300, in managed_config_save
os.rename(fn, self._managed_config_path(dom_uuid))
OSError: [Errno 18] Invalid cross-device link

In my system the default path for managed domains (/var/lib/xend/domains) is used and the
directories /var and /tmp are on different file systems, so the system call os.rename must fail.
My workaround is to set xend-domains-path in xend-config.sxp to a directory on the same file system.

Will this restriction be removed in a later version of xend ?

Cheers
Lutz

Hi Lutz

I've changed the os.rename call to a shutil.move call to cope with this.

Its in cset 14967, which should be in staging soon.

Cheers

Tom

On 24 Apr 2007, at 14:50, Dube, Lutz wrote:

> Hello!
>
> I have a problem using managed domains.
>
> I'm trying to to create a new VM object using the method VM.create.
> In this case xend should
> create a config.sxp file for the new managed domain, but I get an
> error in xend.log
> (s. below). The creation of the VM object itself is OK.
>
> API call:
> newvm = xen.VM.create(session,{ 'name_label':'testdom',
> 'memory_static_max' : '10240000',
> 'memory_dynamic_max' : '10240000'})
>
>
> Resulting error log:
>
> [2007-04-24 13:35:33 24434] DEBUG (XendDomain:728) Creating new
> managed domain: dube: af845f26-ed19-fab1-c4ff-05a27c41046d
>
> [2007-04-24 13:35:33 24434] ERROR (XendDomain:302) Renaming /tmp/
> tmp0PfFzy
> Traceback (most recent call last):
> File "/usr/lib/python2.4/xen/xend/XendDomain.py", line 300, in
> managed_config_save
> os.rename(fn, self._managed_config_path(dom_uuid))
> OSError: [Errno 18] Invalid cross-device link
>
> In my system the default path for managed domains (/var/lib/xend/
> domains) is used and the
> directories /var and /tmp are on different file systems, so the
> system call os.rename must fail.
> My workaround is to set xend-domains-path in xend-config.sxp to a
> directory on the same file system.
>
> Will this restriction be removed in a later version of xend ?
>
>
> Cheers
> Lutz
>
>
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