Xen users - Jul 2010 - Can I rename logical volumes without problems?

I have a vm in a logical volume /dev/xen-vg00/myvm-disk and
/dev/xen-vg00/myvm-swap.
Can I rename this two logical volumes and then restart the vm with no problems?
Of course after modify the config file to reflect the new disk names.

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

Yes, you can.

Stop machine, use lvrename, modify config for VM and start it again.


В Чтв, 29/07/2010 в 13:15 +0200, Mauro пишет:
> I have a vm in a logical volume /dev/xen-vg00/myvm-disk and
> /dev/xen-vg00/myvm-swap.
> Can I rename this two logical volumes and then restart the vm with no
problems?
> Of course after modify the config file to reflect the new disk names.
> 


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

On Thu, Jul 29, 2010 at 6:15 PM, Mauro <mrsanna1@gmail.com>
wrote:
> I have a vm in a logical volume /dev/xen-vg00/myvm-disk and
> /dev/xen-vg00/myvm-swap.
> Can I rename this two logical volumes and then restart the vm with no
problems?
> Of course after modify the config file to reflect the new disk names.
short answer: yes, as long as the new names and then one on the config
match. And "restart" as in "xm shutdown" and "xm
create/xm start", not
"init 6" from domU side.

-- 
Fajar

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

On 29 July 2010 13:26, Fajar A. Nugraha <fajar@fajar.net>
wrote:
> On Thu, Jul 29, 2010 at 6:15 PM, Mauro <mrsanna1@gmail.com> wrote:
>> I have a vm in a logical volume /dev/xen-vg00/myvm-disk and
>> /dev/xen-vg00/myvm-swap.
>> Can I rename this two logical volumes and then restart the vm with no
problems?
>> Of course after modify the config file to reflect the new disk names.
>
> short answer: yes, as long as the new names and then one on the config
> match. And "restart" as in "xm shutdown" and "xm
create/xm start", not
> "init 6" from domU side.
I''ve logged in my VM and do shutdown, then I logged into dom0 renamed
logical volumes, modify VM config file and do xm create VM.cfg.
Is it right?

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

В Чтв, 29/07/2010 в 13:28 +0200, Mauro пишет:
> On 29 July 2010 13:26, Fajar A. Nugraha <fajar@fajar.net> wrote:
> > On Thu, Jul 29, 2010 at 6:15 PM, Mauro <mrsanna1@gmail.com>
wrote:
> >> I have a vm in a logical volume /dev/xen-vg00/myvm-disk and
> >> /dev/xen-vg00/myvm-swap.
> >> Can I rename this two logical volumes and then restart the vm with
no problems?
> >> Of course after modify the config file to reflect the new disk
names.
> >
> > short answer: yes, as long as the new names and then one on the config
> > match. And "restart" as in "xm shutdown" and
"xm create/xm start", not
> > "init 6" from domU side.
> 
> I''ve logged in my VM and do shutdown, then I logged into dom0
renamed
> logical volumes, modify VM config file and do xm create VM.cfg.
> Is it right?
Not excactly, I think, you must destroy domU for that VM (it shall not
appear in xm list). If shutdown destory domU, that''s fine. If not, you
must destroy it manually (after shutdown).


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

On Thu, Jul 29, 2010 at 6:57 PM, George Shuklin
<george.shuklin@gmail.com> wrote:
> В Чтв, 29/07/2010 в 13:28 +0200, Mauro пишет:
>> I''ve logged in my VM and do shutdown, then I logged into dom0
renamed
>> logical volumes, modify VM config file and do xm create VM.cfg.
>> Is it right?
>
> Not excactly, I think, you must destroy domU for that VM (it shall not
> appear in xm list). If shutdown destory domU, that''s fine. If not,
you
> must destroy it manually (after shutdown).
AFAIK the main thing is to make sure that the domU will be using the
new config when it''s started.

You raise a good point though. If the domU still shows on "xm list"
after it''s shutdown beause it''s managed by xend (like what
happens if
you create it with "xm new", or if you set it up using newer versions
of virt-install/virt-manager), then it''s still using the old config.
You need to delete it first ("xm delete"). That would not be a problem
if you only use old-style domU config (like with RHEL/Centos5 and it''s
bundled version of Xen).

-- 
Fajar

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

2010/7/29 Fajar A. Nugraha <fajar@fajar.net>:
> On Thu, Jul 29, 2010 at 6:57 PM, George Shuklin
> <george.shuklin@gmail.com> wrote:
>> В Чтв, 29/07/2010 в 13:28 +0200, Mauro пишет:
>
>>> I''ve logged in my VM and do shutdown, then I logged into
dom0 renamed
>>> logical volumes, modify VM config file and do xm create VM.cfg.
>>> Is it right?
>>
>> Not excactly, I think, you must destroy domU for that VM (it shall not
>> appear in xm list). If shutdown destory domU, that''s fine. If
not, you
>> must destroy it manually (after shutdown).
>
> AFAIK the main thing is to make sure that the domU will be using the
> new config when it''s started.
>
> You raise a good point though. If the domU still shows on "xm
list"
> after it''s shutdown beause it''s managed by xend (like
what happens if
> you create it with "xm new", or if you set it up using newer
versions
> of virt-install/virt-manager), then it''s still using the old
config.
> You need to delete it first ("xm delete"). That would not be a
problem
> if you only use old-style domU config (like with RHEL/Centos5 and
it''s
> bundled version of Xen).
I''m using linux on dom0 and in all my domU.
If I do a shutdown wih the command "halt" then xm list
doesn''t show my
domU so I think it is destroyed.
However I do a shutdown, with xm list I don''t see the domU, renamed
logical volumes, changed the config file and do a xm create VM.cfg.
After a while domU starts and it seems all ok.

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