CentOS - Oct 2016 - CentOS-7-x86_64-GenericCloud.raw very unusual format

On 10/10/2016 8:28 AM, Aliaksei Sheshka wrote:
> $
wgethttp://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.raw.xz
> --2016-10-10 11:21:32--
> http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.raw.xz
> Resolving cloud.centos.org (cloud.centos.org)... 162.252.80.138,
> 2607:1680:0:1::2
> Connecting to cloud.centos.org
> (cloud.centos.org)|162.252.80.138|:80... connected.
> HTTP request sent, awaiting response... 404 Not Found
> 2016-10-10 11:21:32 ERROR 404: Not Found.
>
>
> As before I'm looking for a raw image, or a tar of the corresponding
> file system,
did you look in the directory to see what is there?

http://cloud.centos.org/centos/7/images/



-- 
john r pierce, recycling bits in santa cruz

> -----Original Message-----
> From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On
> Behalf Of John R Pierce
> Sent: Monday, October 10, 2016 1:31 PM
> To: centos at centos.org
> Subject: Re: [CentOS] CentOS-7-x86_64-GenericCloud.raw very unusual
> format
> 
> On 10/10/2016 8:28 AM, Aliaksei Sheshka wrote:
> > $
> > wgethttp://cloud.centos.org/centos/7/images/CentOS-7-x86_64-
> GenericClo
> > ud.raw.xz
> > --2016-10-10 11:21:32--
> > http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-
> GenericCloud.r
> > aw.xz Resolving cloud.centos.org (cloud.centos.org)... 162.252.80.138,
> > 2607:1680:0:1::2
> > Connecting to cloud.centos.org
> > (cloud.centos.org)|162.252.80.138|:80... connected.
> > HTTP request sent, awaiting response... 404 Not Found
> > 2016-10-10 11:21:32 ERROR 404: Not Found.
> >
> >
> > As before I'm looking for a raw image, or a tar of the
corresponding
> > file system,
> 
> did you look in the directory to see what is there?
> 
> http://cloud.centos.org/centos/7/images/
> 
Hello,

Just a question, what exactly are these images?

I see it mentioned on the CentOS website but not a lot of info on exactly
what it is and what it does.

How does this differ from a CentOS 7 VM installed from an ISO? Are these
just pre-made images?

thanks

>
> did you look in the directory to see what is there?
>
> http://cloud.centos.org/centos/7/images/
>
Kind of, there is a CentOS-7-x86_64-GenericCloud.raw.tar.gz ( compare
with CentOS-7-x86_64-GenericCloud.raw.xz )


But again link is not good, and why put raw disk inside the tar?
It would me more natural to have compressed image so one can do
{z,bz,xc}cat cloud.raw.xz > /dev/lvm/vm-disk for example.

Official wiki link is broken regardless.

On 11/10/16 03:21, TE Dukes wrote:
> Just a question, what exactly are these images?
> 
> I see it mentioned on the CentOS website but not a lot of info on exactly
> what it is and what it does.
> 
> How does this differ from a CentOS 7 VM installed from an ISO? Are these
> just pre-made images?
these are images prebuilt to work in cloud infrastructure like openshift
/ amazon ec2 etc. they are pre-setup with cloud-init tools and are
formatted in different backing filetypes.

you can use them for local VM's as well, but you will just need to do a
bit more work since there is no way to login to the images without
exporting the metadata externally to setup passwords and keys etc.

-- 
Karanbir Singh
+44-207-0999389 | http://www.karan.org/ | twitter.com/kbsingh
GnuPG Key : http://www.karan.org/publickey.asc

On 11/10/16 13:16, Aliaksei Sheshka wrote:
>>
>> did you look in the directory to see what is there?
>>
>> http://cloud.centos.org/centos/7/images/
>>
> 
> Kind of, there is a CentOS-7-x86_64-GenericCloud.raw.tar.gz ( compare
> with CentOS-7-x86_64-GenericCloud.raw.xz )
> 
> 
> But again link is not good, and why put raw disk inside the tar?
This is how OracleCloud works, they are unable to consume a raw file
directly. I agree, its a bit odd.
> It would me more natural to have compressed image so one can do
> {z,bz,xc}cat cloud.raw.xz > /dev/lvm/vm-disk for example.
for the sake of size, lots of people prefer to download the qcow2c image
( note the compressed flag ), and qemu-img convert on their own end. Is
that an option for your usecase ?
> 
> Official wiki link is broken regardless.
will try and get that fixed.


-- 
Karanbir Singh
+44-207-0999389 | http://www.karan.org/ | twitter.com/kbsingh
GnuPG Key : http://www.karan.org/publickey.asc

On Tue, Oct 11, 2016 at 08:16:14AM -0400, Aliaksei Sheshka
wrote:
> Kind of, there is a CentOS-7-x86_64-GenericCloud.raw.tar.gz ( compare
> with CentOS-7-x86_64-GenericCloud.raw.xz )
> But again link is not good, and why put raw disk inside the tar?
> It would me more natural to have compressed image so one can do
> {z,bz,xc}cat cloud.raw.xz > /dev/lvm/vm-disk for example.
Earlier versions of xz (RHEL 5, I think?) didn't handle sparse files,
and we put the Fedora raw cloud image inside a tar for that reason. I
don't know if the same applies here, but it might.

-- 
Matthew Miller
<mattdm at fedoraproject.org>
Fedora Project Leader