Comments on: How to create an ebs image from an existing ec2 instance http://aws-musings.com/how-to-create-an-ebs-image-from-an-existing-ec2-instance/ Cloud computing, EC2, RDS, SQS, S3, Java... Mon, 06 Dec 2010 13:41:55 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Alex http://aws-musings.com/how-to-create-an-ebs-image-from-an-existing-ec2-instance/comment-page-1/#comment-21 Alex Tue, 12 Jan 2010 00:27:47 +0000 http://aws-musings.com/?p=63#comment-21 Just wanted to point you guys here: http://developer.amazonwebservices.com/connect/thread.jspa?threadID=39358&start=15&tstart=0 If you combine both these instructions, it results in a cleaner setup. Ie. use rsync instead of dd. This also allows you to potentially use another FS instead of ext3. I'm tryng it out with XFS right now, as I need that FS. I don't know why Amazon is so fixated in ext3. It snapshots like crap. Just wanted to point you guys here:
http://developer.amazonwebservices.com/connect/thread.jspa?threadID=39358&start=15&tstart=0

If you combine both these instructions, it results in a cleaner setup. Ie. use rsync instead of dd. This also allows you to potentially use another FS instead of ext3. I’m tryng it out with XFS right now, as I need that FS. I don’t know why Amazon is so fixated in ext3. It snapshots like crap.

]]> By: Klaas Eikelboom http://aws-musings.com/how-to-create-an-ebs-image-from-an-existing-ec2-instance/comment-page-1/#comment-20 Klaas Eikelboom Mon, 11 Jan 2010 12:42:40 +0000 http://aws-musings.com/?p=63#comment-20 I needed to use the -kernel and -ramdisk parameters to get it working. Same problem as Coert, without I could not connect to the ami. I copied them from the source ami. My assumption is that the parameters must be the same, so default works for most cases but not for every case. Thanks for the blog post. It saved me a lot of time. I needed to use the -kernel and -ramdisk parameters to get it working. Same problem as Coert, without I could not connect to the ami. I copied them from the source ami. My assumption is that the parameters must be the same, so default works for most cases but not for every case.
Thanks for the blog post. It saved me a lot of time.

]]> By: admin http://aws-musings.com/how-to-create-an-ebs-image-from-an-existing-ec2-instance/comment-page-1/#comment-11 admin Thu, 31 Dec 2009 05:23:20 +0000 http://aws-musings.com/?p=63#comment-11 You are right, mkfs is not necessary as dd is a block by block copy of the source disk. You are right, mkfs is not necessary as dd is a block by block copy of the source disk.

]]> By: Dennis http://aws-musings.com/how-to-create-an-ebs-image-from-an-existing-ec2-instance/comment-page-1/#comment-10 Dennis Thu, 31 Dec 2009 04:12:36 +0000 http://aws-musings.com/?p=63#comment-10 Why would you mkfs on the block device in order to just dd over it? That step makes no sense Why would you mkfs on the block device in order to just dd over it? That step makes no sense

]]> By: admin http://aws-musings.com/how-to-create-an-ebs-image-from-an-existing-ec2-instance/comment-page-1/#comment-8 admin Tue, 29 Dec 2009 16:30:07 +0000 http://aws-musings.com/?p=63#comment-8 I don't think the option -kernel and -ramdisk are required. I think they have default values. If you don't want to use the default value, then you should specify it. I don’t think the option -kernel and -ramdisk are required. I think they have default values. If you don’t want to use the default value, then you should specify it.

]]> By: ecelis http://aws-musings.com/how-to-create-an-ebs-image-from-an-existing-ec2-instance/comment-page-1/#comment-7 ecelis Tue, 29 Dec 2009 11:13:26 +0000 http://aws-musings.com/?p=63#comment-7 This is great, thank you. BTW I didn't need to add -kernel and -ramdisk options to ec2reg, I created the EBS from a CentOS 5 i386 community contributed AMI. And image type for i386 is x86_86 or i386, or you can leve this option out as i386 is the default. This is great, thank you.

BTW I didn’t need to add -kernel and -ramdisk options to ec2reg, I created the EBS from a CentOS 5 i386 community contributed AMI.

And image type for i386 is x86_86 or i386, or you can leve this option out as i386 is the default.

]]> By: alvin http://aws-musings.com/how-to-create-an-ebs-image-from-an-existing-ec2-instance/comment-page-1/#comment-6 alvin Tue, 29 Dec 2009 11:00:40 +0000 http://aws-musings.com/?p=63#comment-6 thanks for the writeup, just tried it out and it worked sweetly. How important are the -kernel and -ramdisk options mentioned by Coert? thanks for the writeup, just tried it out and it worked sweetly. How important are the -kernel and -ramdisk options mentioned by Coert?

]]> By: Coert http://aws-musings.com/how-to-create-an-ebs-image-from-an-existing-ec2-instance/comment-page-1/#comment-3 Coert Tue, 22 Dec 2009 16:52:13 +0000 http://aws-musings.com/?p=63#comment-3 Thanks for the excellent explanation ! I just had to add the --kernel aki-####### and --ramdisk ari-####### parameters to the ec2reg command. Without them, the ami did start but was not accessible. Thanks for the excellent explanation ! I just had to add the –kernel aki-####### and –ramdisk ari-####### parameters to the ec2reg command. Without them, the ami did start but was not accessible.

]]>