openstack team mailing list archive

[Tomoe Sugihara <tomoe@xxxxxxxxxxxx>]

Hi Anthony,

I tried your exercise script and found the following:

 -  a launched instance cannot go outside the world and failed
    to get the cirros image with floating ip.
 - I had to go inside nova-compute session to enter password
  for executing guestmount and fusermount with sudo.

So, I made some changes with the patch below and got it working.

midokura@midokura-iMac:~/git/devstack.forked/exercises$ diff  -u
boot_from_volume_new-8fe133bebcd90fa94c7a1d12c00b3f2cca18a35c.sh
bfv.sh
--- boot_from_volume_new-8fe133bebcd90fa94c7a1d12c00b3f2cca18a35c.sh	2012-02-11
05:49:08.000000000 +0900
+++ bfv.sh	2012-02-14 14:30:44.233636001 +0900
@@ -99,13 +99,13 @@
 fi

 # Add floating ip to our server
-nova add-floating-ip $VM_UUID $FLOATING_IP
+#nova add-floating-ip $VM_UUID $FLOATING_IP

 # Test we can ping our floating ip within ASSOCIATE_TIMEOUT seconds
-if ! timeout $ASSOCIATE_TIMEOUT sh -c "while ! ping -c1 -w1
$FLOATING_IP; do sleep 1; done"; then
-    echo "Couldn't ping server with floating ip"
-    exit 1
-fi
+#if ! timeout $ASSOCIATE_TIMEOUT sh -c "while ! ping -c1 -w1
$FLOATING_IP; do sleep 1; done"; then
+#    echo "Couldn't ping server with floating ip"
+#    exit 1
+#fi

 # Create our volume
 nova volume-create --display_name=$VOL_NAME 1
@@ -116,6 +116,9 @@
     exit 1
 fi

+# get private ip
+IP=$(nova show $VM_UUID |grep priv | awk -F '|' '{print $3}'|sed -e 's/ //')
+
 # FIXME (anthony) - python-novaclient should accept a volume_id for
the attachment param
 DEVICE=/dev/vdb
 VOLUME_ID=`nova volume-list | grep $VOL_NAME  | cut -d '|' -f 2 | tr -d ' '`
@@ -131,7 +134,7 @@
 # To do this, ssh to the builder instance, mount volume, and build a
volume-backed image.
 STAGING_DIR=/tmp/stage
 CIRROS_DIR=/tmp/cirros
-ssh -o StrictHostKeyChecking=no -i $KEY_FILE cirros@$FLOATING_IP << EOF
+ssh -o StrictHostKeyChecking=no -i $KEY_FILE cirros@$IP << EOF
 set -o errexit
 set -o xtrace
 sudo mkdir -p $STAGING_DIR
@@ -177,16 +180,16 @@
 sleep 1

 # Add floating ip to our server
-nova add-floating-ip $VOL_VM_UUID $FLOATING_IP
+#nova add-floating-ip $VOL_VM_UUID $FLOATING_IP

 # Test we can ping our floating ip within ASSOCIATE_TIMEOUT seconds
-if ! timeout $ASSOCIATE_TIMEOUT sh -c "while ! ping -c1 -w1
$FLOATING_IP; do sleep 1; done"; then
-    echo "Couldn't ping volume-backed server with floating ip"
-    exit 1
-fi
+#if ! timeout $ASSOCIATE_TIMEOUT sh -c "while ! ping -c1 -w1
$FLOATING_IP; do sleep 1; done"; then
+#    echo "Couldn't ping volume-backed server with floating ip"
+#    exit 1
+#fi

 # Make sure our volume-backed instance launched
-ssh -o StrictHostKeyChecking=no -i $KEY_FILE cirros@$FLOATING_IP << EOF
+ssh -o StrictHostKeyChecking=no -i $KEY_FILE cirros@$IP << EOF
 echo "success!"
 EOF

@@ -206,7 +209,7 @@
 nova delete $INSTANCE_NAME

 # De-allocate the floating ip
-nova floating-ip-delete $FLOATING_IP
+#nova floating-ip-delete $FLOATING_IP

 # Delete secgroup
 nova secgroup-delete $SECGROUP
----------------------------------------------

Hope this helps.

Cheers,
Tomoe


On Sat, Feb 11, 2012 at 10:31 PM, Tomoe Sugihara <tomoe@xxxxxxxxxxxx> wrote:
> Hi Anthony,
>
> Thanks for following it up.
>
> On Sat, Feb 11, 2012 at 2:58 PM, Anthony Young
> <sleepsonthefloor@xxxxxxxxx> wrote:
>> On Fri, Feb 10, 2012 at 8:51 PM, Tomoe Sugihara <tomoe@xxxxxxxxxxxx> wrote:
>>>
>>> Hi folks,
>>>
>>> Could someone tell me what is the right way to do boot-from-volume?
>>> Especially, how to create boot-from-volume capable image and volume?
>>> My understanding is that, since openstack API requires imageRef, we
>>> need to pass in both image and volume ids.
>>
>>
>> I was actually playing with this today, and just put up a review that adds a
>> devstack exercise to create and launch a bootable volume.  It is true that
>> --image is still required when booting from a volume - I have not
>> investigated yet if that is a bug or a consequence of how boot-from-volume
>> is implemented as an extension (which still may fall into the bug category).
>>
>> https://review.openstack.org/4044
>
> Current servers API, which boot-from-volume inherits from, throws an
> exception when imageRef is missing:
> https://github.com/openstack/nova/blob/master/nova/api/openstack/compute/servers.py#L646
> https://github.com/openstack/nova/blob/master/nova/api/openstack/compute/servers.py#L965
>
>>
>>>
>>> I thought that create_image in EC2 API would be the one and tried, but
>>> it's totally broken now:
>>> https://bugs.launchpad.net/nova/+bug/923546
>>> And, I didn't find equivalent code in OpenStack API.
>>>
>>>
>>> I'd appreciate any help on this and I'd be happy to help debug the issue.
>>
>>
>> Hopefully the code above will give you some direction to get started.  My
>> experience thus far is that the end-to-end experience of using this feature
>> needs some work, so I'll probably file some bugs and patches while I muck
>> with it.  So it would be great if you took a look and did the same:)
>
> That helps me understand the end-to-end workflow a lot :)
> In your script, you log in to a guest and copy a bootable image by cp
> command to a volume, but I'm wondering if there's a way to create
> bootable volume using only APIs. Otherwise it's a bit hard to manage
> from operator's or dashboard's point of view.
>
> I'll run your script next week and see how it goes. Thanks a lot!
>
> Tomoe
>
>>
>> Anthony
>>
>>>
>>> Cheers,
>>> Tomoe
>>>
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>>
>>