Re: [Openstack] How to restore existing vms after host reboot in devstack

2013-08-21 Thread Qinglong.Meng
+1


2013/8/21 Swapnil Kulkarni 

> Hello,
>
> I think the cause is you are running stack.sh everytime you restart
> devstack which clears the configuration. rejoin-stack.sh can help for your
> cause.
>
> Before proceeding for running the script please associate the vg file with
> a loop device with following command with root
>
> losetup /dev/loop2 /opt/stack/data/stack-volumes-backing-file
>
> Please use rejoin-stack.sh script located at your devstack installation
> directory or /opt/stack/devstack
>
> Best Regards,
> Swapnil Kulkarni
> swapnilkulkarni2...@gmail.com
>
>
>
> On Wed, Aug 21, 2013 at 12:37 PM, Batsayan Das wrote:
>
>> Hi,
>>
>> I launch the openstack by running stack.sh as mentioned in
>> http://devstack.org/guides/single-machine.html
>>
>> I created some images and instances in devstack using dashboard. When I
>> reboot Host machine and run stack.sh again, those images and instance got
>> lost, and I am not able to see those images and instances that I already
>> created using dashboard.
>>
>> My question is
>>
>> 1. Is this what is expected from host reboot?
>> 2. What I need to do to retain images and instances between multiple host
>> reboots.
>>
>> The thread
>> http://www.mail-archive.com/openstack@lists.launchpad.net/msg08453.htmlsays 
>> to use the switch  --start_guests_on_host_boot
>> --resume_guests_state_on_host_boot. I am not sure how I should use these ,
>> which config files should have those switched enabled when I launch the
>> devstack by simply running stack.sh
>>
>> I guess I need to pass some parameters or need to  do **something**
>> before running to stack.sh so that it does not destroy already crested
>> instances and images. As I understand stack.sh  reinitialize  all the stuffs
>>
>> Looking for any help.
>>
>> Regards,
>> Batsayan Das
>> Tata Consultancy Services
>> Mailto: batsayan@tcs.com
>> Website: http://www.tcs.com
>> 
>> Experience certainty.IT Services
>>Business Solutions
>>Consulting
>> 
>>
>> =-=-=
>> Notice: The information contained in this e-mail
>> message and/or attachments to it may contain
>> confidential or privileged information. If you are
>> not the intended recipient, any dissemination, use,
>> review, distribution, printing or copying of the
>> information contained in this e-mail message
>> and/or attachments to it are strictly prohibited. If
>> you have received this communication in error,
>> please notify us by reply e-mail or telephone and
>> immediately and permanently delete the message
>> and any attachments. Thank you
>>
>>
>> ___
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>> Post to : openstack@lists.openstack.org
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>>
>
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-- 

Lawrency Meng
mail: mengql112...@gmail.com
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Re: [Openstack] How to restore existing vms after host reboot in devstack

2013-08-21 Thread Batsayan Das
 
Hello,
It solves the problem. 
Thanks for the help.

Regards,
Batsayan Das
Tata Consultancy Services
Mailto: batsayan@tcs.com
Website: http://www.tcs.com

Experience certainty.   IT Services
Business Solutions
Consulting


-Swapnil Kulkarni  wrote: -
To: Batsayan Das 
From: Swapnil Kulkarni 
Date: 08/21/2013 12:51PM
Cc: openstack@lists.openstack.org
Subject: Re: [Openstack] How to restore existing vms after host reboot in 
devstack

Hello,

I think the cause is you are running stack.sh everytime you restart devstack 
which clears the configuration. rejoin-stack.sh can help for your cause.

Before proceeding for running the script please associate the vg file with a 
loop device with following command with root
 
losetup /dev/loop2 /opt/stack/data/stack-volumes-backing-file

Please use rejoin-stack.sh script located at your devstack installation 
directory or /opt/stack/devstack

 
Best Regards,
Swapnil Kulkarni
swapnilkulkarni2...@gmail.com

 

On Wed, Aug 21, 2013 at 12:37 PM, Batsayan Das  wrote:
 Hi, 
 
I launch the openstack by running stack.sh as mentioned in 
http://devstack.org/guides/single-machine.html 
 
I created some images and instances in devstack using dashboard. When I reboot 
Host machine and run stack.sh again, those images and instance got lost, and I 
am not able to see those images and instances that I already created using 
dashboard. 
 
My question is 
 
1. Is this what is expected from host reboot? 
2. What I need to do to retain images and instances between multiple host 
reboots. 
 
The thread 
http://www.mail-archive.com/openstack@lists.launchpad.net/msg08453.html says to 
use the switch  --start_guests_on_host_boot --resume_guests_state_on_host_boot. 
I am not sure how I should use these , which config files should have those 
switched enabled when I launch the devstack by simply running stack.sh  
 
I guess I need to pass some parameters or need to  do **something** before 
running to stack.sh so that it does not destroy already crested instances and 
images. As I understand stack.sh  reinitialize  all the stuffs 
 
Looking for any help. 
 
Regards, 
Batsayan Das
 Tata Consultancy Services
 Mailto: batsayan@tcs.com
 Website: http://www.tcs.com
 
 Experience certainty.        IT Services
                         Business Solutions
                         Consulting
 =-=-=
 Notice: The information contained in this e-mail
 message and/or attachments to it may contain 
 confidential or privileged information. If you are 
 not the intended recipient, any dissemination, use, 
 review, distribution, printing or copying of the 
 information contained in this e-mail message 
 and/or attachments to it are strictly prohibited. If 
 you have received this communication in error, 
 please notify us by reply e-mail or telephone and 
 immediately and permanently delete the message 
 and any attachments. Thank you
  

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Re: [Openstack] How to restore existing vms after host reboot in devstack

2013-08-21 Thread Swapnil Kulkarni
Hello,

I think the cause is you are running stack.sh everytime you restart
devstack which clears the configuration. rejoin-stack.sh can help for your
cause.

Before proceeding for running the script please associate the vg file with
a loop device with following command with root

losetup /dev/loop2 /opt/stack/data/stack-volumes-backing-file

Please use rejoin-stack.sh script located at your devstack installation
directory or /opt/stack/devstack

Best Regards,
Swapnil Kulkarni
swapnilkulkarni2...@gmail.com



On Wed, Aug 21, 2013 at 12:37 PM, Batsayan Das  wrote:

> Hi,
>
> I launch the openstack by running stack.sh as mentioned in
> http://devstack.org/guides/single-machine.html
>
> I created some images and instances in devstack using dashboard. When I
> reboot Host machine and run stack.sh again, those images and instance got
> lost, and I am not able to see those images and instances that I already
> created using dashboard.
>
> My question is
>
> 1. Is this what is expected from host reboot?
> 2. What I need to do to retain images and instances between multiple host
> reboots.
>
> The thread
> http://www.mail-archive.com/openstack@lists.launchpad.net/msg08453.htmlsays 
> to use the switch  --start_guests_on_host_boot
> --resume_guests_state_on_host_boot. I am not sure how I should use these ,
> which config files should have those switched enabled when I launch the
> devstack by simply running stack.sh
>
> I guess I need to pass some parameters or need to  do **something** before
> running to stack.sh so that it does not destroy already crested instances
> and images. As I understand stack.sh  reinitialize  all the stuffs
>
> Looking for any help.
>
> Regards,
> Batsayan Das
> Tata Consultancy Services
> Mailto: batsayan@tcs.com
> Website: http://www.tcs.com
> 
> Experience certainty.IT Services
>Business Solutions
>Consulting
> 
>
> =-=-=
> Notice: The information contained in this e-mail
> message and/or attachments to it may contain
> confidential or privileged information. If you are
> not the intended recipient, any dissemination, use,
> review, distribution, printing or copying of the
> information contained in this e-mail message
> and/or attachments to it are strictly prohibited. If
> you have received this communication in error,
> please notify us by reply e-mail or telephone and
> immediately and permanently delete the message
> and any attachments. Thank you
>
>
> ___
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> Post to : openstack@lists.openstack.org
> Unsubscribe :
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>
>
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