Re: [CentOS] CentOS-7-x86_64-dvd-2009.iso is too big for DVD blanks

[John R. Dennison]

On Wed, Mar 17, 2021 at 11:42:40PM -0500, Robert G. (Doc) Savage via CentOS 
wrote:
> 
> I'm sure it would, but I thought I made it clear that DL or BluRay have
> never been options in this case. I'm disappointed that the DVD iso was
> released without any release notes advising it was oversized

The size issue with single-layer media has been a known issue since the
CentOS-6 days and the release notes very much do mention it, or at least
they did at one point.

It's not realistic to expect server-class machines not to be able to
boot from dual-layer or USB media in 2021.






John
-- 
Certitude is not the test of certainty.  We have been
cocksure of many things that were not so.

-- Oliver Wendell Holmes, Jr. (1841-1935), American jurist and Supreme
   Court Justice, "Natural Law", 32 Harvard Law Review 40, 41 (1918)
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Re: [CentOS] CentOS-7-x86_64-dvd-2009.iso is too big for DVD blanks

[Robert G. (Doc) Savage via CentOS]

On Wed, 2021-03-17 at 20:41 +0100, André Verwijs via CentOS wrote:
> 
> I blueray disk (25GB)?? works great :)

André,

I'm sure it would, but I thought I made it clear that DL or BluRay have
never been options in this case. I'm disappointed that the DVD iso was
released without any release notes advising it was oversized

I finally burned and used a network installation CD and NFS connected
to a local mirror of the CentOS 7.9.2011 repository. That option will
not be available to me in the future. I have the server in my physical
possession for a very short while. After I finish installation and
configuration, I will only have remote access.

--Doc Savage
    Fairview Heights, IL
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Re: [CentOS] CentOS-7-x86_64-dvd-2009.iso is too big for DVD blanks

[Michael Hennebry]

Supergrub will boot some .iso files.
In the past, I have directly booted a
partition I made from a fedora .iso file.

Another option *might* be making another .iso file.
Mount the file.
Copy its filesystem to a directory.
Remove some stuff you can live without.
Make another .iso file using directions for making a bootable disk.
Burn the .iso file to disk.

--
Michael   henne...@web.cs.ndsu.nodak.edu
"Sorry but your password must contain an uppercase letter, a number,
a haiku, a gang sign, a heiroglyph, and the blood of a virgin."
 --  someeecards
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Re: [CentOS] CentOS-7-x86_64-dvd-2009.iso is too big for DVD blanks

[André Verwijs via CentOS]

I blueray disk (25GB)?? works great :)


Op 17-03-2021 om 03:03 schreef H:

On March 16, 2021 11:16:21 AM EDT, Michael Hennebry 
 wrote:

On Sun, 14 Mar 2021, Robert G. (Doc) Savage via CentOS wrote:


We need to ask the developers to make a re-spin that's about 5MB
smaller. And before someone suggests it, the 2010-vintage server I'm
trying to install CentOS on does not support booting from a thumb
drive, so that option is not available.

What will it boot from?
I do not use thumb drives.
I have a USB interface to SD cards.
Can you make the .iso file into a disk partition (not a file in it)?
I've sometimes booted from one of those.

To the OP:

Is it possible to install an earlier release that might conceivably be smaller, 
then run yum update?
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Re: [CentOS] new observations: Re: Centos 7 installer alert! message

[R C]

Hi Chris,


I just checked, no there no memory/ram/DIMMs mentioned in boot.log.


Ron

On 3/17/21 12:28 PM, Christopher Wensink wrote:

Is it in boot.log?

Chris

On 3/17/2021 1:14 PM, R C wrote:

Hello,


I installed 72G ram in a Dell (it canhandle 72G according to Dell).  
The BIOS says there are 9 8G DIMMs install (BIOS test shows no 
errors).  dmidecode says there are indeed 9 DIMMs, and they show all 
fine, no errors etc. However, free reports tehre's only 54G  available.


So I (I am guessing) that alert message has something to do with 
ram/memory, but still wasn't able to actually read it since it 
disappears really quick.


Any ideas what the culprit here could be?


thanks,


Ron

On 3/16/21 9:08 PM, R C wrote:
When I install Centos 7,  I see an "alert!" message flash by, too 
fast to read it.   Is there a way to figure out what that message 
is/was (after install)  or make it wait so I can actually read it?



thanks,


Ron


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Re: [CentOS] new observations: Re: Centos 7 installer alert! message

[R C]

right,  I did that,  I don't see any errors in dmesg

On 3/17/21 12:30 PM, Binet, Valere (NIH/NIA/IRP) [C] wrote:

Hi Ron,

I replied to the list but I've come to believe my emails to the list don't go 
through.
Anyway, my reply was:
   I assume you already looked and didn't find anything in dmesg, right?

Please post to the list if it’s of any help. Thank you,

Valère Binet

On 3/17/21, 2:16 PM, "R C"  wrote:

 Hello,


 I installed 72G ram in a Dell (it canhandle 72G according to Dell).  The
 BIOS says there are 9 8G DIMMs install (BIOS test shows no errors).
 dmidecode says there are indeed 9 DIMMs, and they show all fine, no
 errors etc. However, free reports tehre's only 54G  available.

 So I (I am guessing) that alert message has something to do with
 ram/memory, but still wasn't able to actually read it since it
 disappears really quick.

 Any ideas what the culprit here could be?


 thanks,


 Ron

 On 3/16/21 9:08 PM, R C wrote:
 > When I install Centos 7,  I see an "alert!" message flash by, too fast
 > to read it.   Is there a way to figure out what that message is/was
 > (after install)  or make it wait so I can actually read it?
 >
 >
 > thanks,
 >
 >
 > Ron
 >
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[CentOS] new observations: Re: Centos 7 installer alert! message

[R C]

Hello,


I installed 72G ram in a Dell (it canhandle 72G according to Dell).  The 
BIOS says there are 9 8G DIMMs install (BIOS test shows no errors).  
dmidecode says there are indeed 9 DIMMs, and they show all fine, no 
errors etc. However, free reports tehre's only 54G  available.


So I (I am guessing) that alert message has something to do with 
ram/memory, but still wasn't able to actually read it since it 
disappears really quick.


Any ideas what the culprit here could be?


thanks,


Ron

On 3/16/21 9:08 PM, R C wrote:
When I install Centos 7,  I see an "alert!" message flash by, too fast 
to read it.   Is there a way to figure out what that message is/was 
(after install)  or make it wait so I can actually read it?



thanks,


Ron


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Re: [CentOS] Centos 8 host -> VMware host

[Gregory P. Ennis]

Everyone,
-- 
Greg Ennis


I am trying to move some Centos 7 guests off of a Centos 8 host to a
VMware host machine. 
qemu-img is a great tool in kvm to convert the files from *.qcow2 to
*.vmdk very easily
with the command :

qemu-img convert -f qcow2 -O vmdk *.qcow2 *.vmdk

I have been able to easily move these files to the 'usb vmware' system
with scp from the
Centos 8 host to the VmWare host.  (Interesting in that I could not get
the scp in the
VMware host to work). 

Unfortunately, I have not figured out how to import the files into
VMware virtual machine
yet.  I can easily create a new virtual machine with a CentOS8 *.iso
file which tells me
that the Vmware host is working.   I may have been looking in the wrong
places for
documentation, but so fare I have not been impressed with VMware's
documentation to import
pre-existing kvm guests.

Do any of you have any tutorial links as to how to import these *.vmdk
files into VMware?

Thanks for your help

Greg Ennis
---

Everyone,

I did find a way to copy a 'live' Centos 7 system to VMWare by way of
using VMWare-converter that had to be installed on a microsoft Windows
machine on the same network.  (vCenter Converter Standalone 6.2.0.1). I
consulted with some Microsoft guys that showed me how to do this.

You will be required to have a login account with VMWare, but this does
work and is quite easy to use.  The design of the software is to work
on Windows, and to copy a physical live machine to a newly created
VMWare quest.  

There were a few problems when I booted the new CentOs 7 VMWare guest,
and I am still working on those problems, but this process appears to
work.  Although the the VCenter Converter is designed to copy a
physical disc I used it to copy a KVM Centos 7 guest which worked
better than I expected.

I am still working on finding a way to import a shutdowned KVM guest
machine file directly into VMWare but have not found it yet.

I have also not found a way for a linux desktop network viewer for a
VMWare guest on the network.

I am still very very new with the use of VMWare but I would say the
network has been much easier to set up with VMWare than KVM, but the
gui with KVM is much better than the gui with VMWARE.

With the eol of Centos 8 being 9 months about I hope this note helps
others that have to stop using Centos 8 as a hypervisor. I would surely
like to hear from some of the veterans of this process.  There just has
to be a way to import a KVM file directly to VMWare. Please accept my
apologies if some think this dialog is off topic, but it is not off
topic for me.  I have grown to love Centos and will always appreciate
the great help and assistance from this forum!

Thanks,

Greg Ennis


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