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

Hello!

Is anyone aware why CentOS-7-x86_64-GenericCloud.raw has such unusual format ?

root at test-srv:~# wget
http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.raw
--2016-03-21 13:16:31--
http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.raw
Resolving cloud.centos.org (cloud.centos.org)... 162.252.80.138
Connecting to cloud.centos.org
(cloud.centos.org)|162.252.80.138|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 374668382 (357M) [application/x-gzip]
Saving to: 'CentOS-7-x86_64-GenericCloud.raw'
CentOS-7-x86_64-GenericCloud.raw
100%[=========================================================================>]
357.31M  12.9MB/s    in 30s
2016-03-21 13:17:03 (11.9 MB/s) - 'CentOS-7-x86_64-GenericCloud.raw'
saved [374668382/374668382]

Download reports [application/x-gzip] for raw file

And indeed
root at test-srv:~# file CentOS-7-x86_64-GenericCloud.raw
CentOS-7-x86_64-GenericCloud.raw: gzip compressed data, last modified:
Sat Feb 27 02:14:37 2016, from Unix

Ok, lets uncompress:
root at test-srv:~# zcat -d CentOS-7-x86_64-GenericCloud.raw >
CentOS-7-x86_64-GenericCloud.a

And check again
root at test-srv:~# file CentOS-7-x86_64-GenericCloud.a
CentOS-7-x86_64-GenericCloud.a: POSIX tar archive (GNU)

Ok. it's a tar archive.

root at test-srv:~# tar -xf CentOS-7-x86_64-GenericCloud.a -v
CentOS-7-x86_64-GenericCloud-1602.raw

Now it's CentOS-7-x86_64-GenericCloud-1602.raw file which is indeed raw

What is the point to pack single raw file into the tar.gz and to name it raw ?
Or it's just a mistake ?

Thanks!

On 21/03/16 14:34, Aliaksei Sheshka wrote:
> What is the point to pack single raw file into the tar.gz and to name it
raw ?
> Or it's just a mistake ?
> 
> 
Johnny is looking at the cdn side of thigs, but effectively we will not
have a .raw - we will have a .raw.tar.gz file ( which will itself only
have a .raw file compressed inside it )


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

On 03/21/2016 09:51 AM, Karanbir Singh wrote:
> On 21/03/16 14:34, Aliaksei Sheshka wrote:
>> What is the point to pack single raw file into the tar.gz and to name
it raw ?
>> Or it's just a mistake ?
>>
>>
> 
> Johnny is looking at the cdn side of thigs, but effectively we will not
> have a .raw - we will have a .raw.tar.gz file ( which will itself only
> have a .raw file compressed inside it )
> 
> 
It looks as if using 'Multiple Views' in the apache setup means that you
can effectively download a file even leaving off the extension .. in
your case, it left off the tar.gz but allowed you to download that file
anyway.

We are looking at changing the apache configuration to prevent this type
of thing in the future.

As an example:

http://mirror.centos.org/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1511

that pulls down the .torrent file even though there is no .torrent

The bottom line is, please download the .raw.tar.gz file and not the
.raw file and we are working on the configs.

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On 21 March 2016 at 11:51, Karanbir Singh <mail-lists at karan.org> wrote:
> On 21/03/16 14:34, Aliaksei Sheshka wrote:
> > What is the point to pack single raw file into the tar.gz and to name
it
> raw ?
> > Or it's just a mistake ?
> >
> >
>
> Johnny is looking at the cdn side of thigs, but effectively we will not
> have a .raw - we will have a .raw.tar.gz file ( which will itself only
> have a .raw file compressed inside it )
>
>
> --
> Karanbir Singh
> +44-207-0999389 | http://www.karan.org/ | twitter.com/kbsingh
> GnuPG Key : http://www.karan.org/publickey.asc
>
>
Why not a compressed qcow2?

Like: CentOS-7-x86_64-GenericCloud.qcow2c

This way, we can add it as-is to OpenStack Glance, that it will be
downloaded by demand, when required and, OpenStack Nova will automatically
uncompress the image for runtime.

Cheers!
Thiago

On 21/03/16 15:34, Aliaksei Sheshka wrote:
> Hello!
> 
> Is anyone aware why CentOS-7-x86_64-GenericCloud.raw has such unusual
format ?
> 
> root at test-srv:~# wget
> http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.raw
> --2016-03-21 13:16:31--
> http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.raw
> Resolving cloud.centos.org (cloud.centos.org)... 162.252.80.138
> Connecting to cloud.centos.org
> (cloud.centos.org)|162.252.80.138|:80... connected.
> HTTP request sent, awaiting response... 200 OK
> Length: 374668382 (357M) [application/x-gzip]
> Saving to: 'CentOS-7-x86_64-GenericCloud.raw'
> CentOS-7-x86_64-GenericCloud.raw
>
100%[=========================================================================>]
> 357.31M  12.9MB/s    in 30s
> 2016-03-21 13:17:03 (11.9 MB/s) -
'CentOS-7-x86_64-GenericCloud.raw'
> saved [374668382/374668382]
> 
> Download reports [application/x-gzip] for raw file
> 
> And indeed
> root at test-srv:~# file CentOS-7-x86_64-GenericCloud.raw
> CentOS-7-x86_64-GenericCloud.raw: gzip compressed data, last modified:
> Sat Feb 27 02:14:37 2016, from Unix
> 
> Ok, lets uncompress:
> root at test-srv:~# zcat -d CentOS-7-x86_64-GenericCloud.raw >
> CentOS-7-x86_64-GenericCloud.a
> 
> And check again
> root at test-srv:~# file CentOS-7-x86_64-GenericCloud.a
> CentOS-7-x86_64-GenericCloud.a: POSIX tar archive (GNU)
> 
> Ok. it's a tar archive.
> 
> root at test-srv:~# tar -xf CentOS-7-x86_64-GenericCloud.a -v
> CentOS-7-x86_64-GenericCloud-1602.raw
> 
> Now it's CentOS-7-x86_64-GenericCloud-1602.raw file which is indeed raw
> 
> What is the point to pack single raw file into the tar.gz and to name it
raw ?
> Or it's just a mistake ?
> 
> Thanks!
So I found yesterday that the MultiViews option was active in the
template used by cfgmgmt for those vhosts, and was the root cause of
that behaviour.
I confirm that such .raw image wasn't even present on those
cloud.centos.org, but httpd served the .raw.tar.gz instead.
Fix for this was pushed earlier today so you'll now have a 404 if you
try to download that .raw file again.
That brings though another question : why trying specifically to
download a .raw file that isn't listed on that page ?


-- 
Fabian Arrotin
The CentOS Project | http://www.centos.org
gpg key: 56BEC54E | twitter: @arrfab

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What you mean is not listed ?
Click 1) https://www.centos.org/download/
there click 2) More download choices
it goes to 3) https://wiki.centos.org/Download
there you see 4) Cloud / Containers ,
http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.raw

raw files are very useful, they are very convenient to tweak by simply
mounting using losetup.
And there is no good reason to put 1 file inside tar.gz, just
compressed raw.gz would be fine.






On Tue, Mar 22, 2016 at 8:35 AM, Fabian Arrotin <arrfab at centos.org>
wrote:
> On 21/03/16 15:34, Aliaksei Sheshka wrote:
>> Hello!
>>
>> Is anyone aware why CentOS-7-x86_64-GenericCloud.raw has such unusual
format ?
>>
>> root at test-srv:~# wget
>>
http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.raw
>> --2016-03-21 13:16:31--
>>
http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.raw
>> Resolving cloud.centos.org (cloud.centos.org)... 162.252.80.138
>> Connecting to cloud.centos.org
>> (cloud.centos.org)|162.252.80.138|:80... connected.
>> HTTP request sent, awaiting response... 200 OK
>> Length: 374668382 (357M) [application/x-gzip]
>> Saving to: 'CentOS-7-x86_64-GenericCloud.raw'
>> CentOS-7-x86_64-GenericCloud.raw
>>
100%[=========================================================================>]
>> 357.31M  12.9MB/s    in 30s
>> 2016-03-21 13:17:03 (11.9 MB/s) -
'CentOS-7-x86_64-GenericCloud.raw'
>> saved [374668382/374668382]
>>
>> Download reports [application/x-gzip] for raw file
>>
>> And indeed
>> root at test-srv:~# file CentOS-7-x86_64-GenericCloud.raw
>> CentOS-7-x86_64-GenericCloud.raw: gzip compressed data, last modified:
>> Sat Feb 27 02:14:37 2016, from Unix
>>
>> Ok, lets uncompress:
>> root at test-srv:~# zcat -d CentOS-7-x86_64-GenericCloud.raw >
>> CentOS-7-x86_64-GenericCloud.a
>>
>> And check again
>> root at test-srv:~# file CentOS-7-x86_64-GenericCloud.a
>> CentOS-7-x86_64-GenericCloud.a: POSIX tar archive (GNU)
>>
>> Ok. it's a tar archive.
>>
>> root at test-srv:~# tar -xf CentOS-7-x86_64-GenericCloud.a -v
>> CentOS-7-x86_64-GenericCloud-1602.raw
>>
>> Now it's CentOS-7-x86_64-GenericCloud-1602.raw file which is indeed
raw
>>
>> What is the point to pack single raw file into the tar.gz and to name
it raw ?
>> Or it's just a mistake ?
>>
>> Thanks!
>
> So I found yesterday that the MultiViews option was active in the
> template used by cfgmgmt for those vhosts, and was the root cause of
> that behaviour.
> I confirm that such .raw image wasn't even present on those
> cloud.centos.org, but httpd served the .raw.tar.gz instead.
> Fix for this was pushed earlier today so you'll now have a 404 if you
> try to download that .raw file again.
> That brings though another question : why trying specifically to
> download a .raw file that isn't listed on that page ?
>
>
> --
> Fabian Arrotin
> The CentOS Project | http://www.centos.org
> gpg key: 56BEC54E | twitter: @arrfab
>
>
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