Re: [CentOS] RAID controller recommendations that are supported by RHEL/CentOS 8?

2019-10-10 Thread Thomas Stephen Lee 
Hi Dennis,

I contacted Broadcom support.

They said

"
The MegaRAID SAS 9361-8i. I would recommend the MegaRAID SAS 9460-8i. The
latest controller also allows you to attach NVMe drives. Please see the
following link for details.

https://www.broadcom.com/products/storage/raid-controllers/tab-12Gb-nvme

"

thanks
--

Thomas Stephen Lee

On Thu, Oct 10, 2019 at 3:16 PM Dennis Jacobfeuerborn 
wrote:

> Hi,
> I'm currently looking for a RAID controller with BBU/CacheVault and
> while LSI MegaRaid controllers worked well in the past apparently they
> are no longer supported in RHEL 8:
> https://access.redhat.com/discussions/3722151
>
> Does anybody have recommendations for for hardware controllers with
> cache that should work in both CentOS 7 and 8 out of the box?
>
> Regards,
>   Dennis
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Re: [CentOS] CentOS 8 Installation Not Recognizing Local Disk

2019-10-10 Thread Phelps, Matthew 
On Thu, Oct 10, 2019 at 11:52 AM Ljubomir Ljubojevic 
wrote:

> On 10/10/19 3:18 PM, Phelps, Matthew wrote:
> > On Thu, Oct 10, 2019 at 9:04 AM Nux!  wrote:
> >
> >> There was a recent thread about Redhat's removal of drivers from LSI
> >> SAS2, it's probably the problem you are facing.
> >> It can be worked around with the help of Elrepo repo.
> >>
> >>
> >> https://lists.centos.org/pipermail/centos/2019-October/173682.html
> >>
> >>
> >>
> https://elrepoproject.blogspot.com/2019/08/rhel-80-and-support-for-removed-adapters.html
> >>
> >>
> >>
> https://elrepo.org/linux/dud/el8/x86_64/dd-mpt3sas-27.101.00.00-1.el8_0.elrepo.iso
> >>
> >>
> >>
> > Is there a utility somewhere to check a running system to see if it is
> > going to be supported in RHEL/CentOS 8?
>
> If you read the ElRepo Blog, you would know the following:
>
> You can check by running the lspci command (lspci -nn) and compare it
> with Red Hats list of removed ID's:
>
> https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/considerations_in_adopting_rhel_8/hardware-enablement_considerations-in-adopting-rhel-8#removed-adapters_hardware-enablement
>
> Here is the list of all (so far created) the DUD's for EL8:
> https://elrepo.org/linux/dud/el8/x86_64/
>
> And here is ElRepo page http://elrepo.org/tiki/DeviceIDs that shows all
> the drivers ElRepo has the drivers for, and can create DUD ISO files if
> asked via ElRepo bugzila:
> https://elrepo.org/bugs/main_page.php
>
>
If you read my question, you would have answered "No. There is no utility
that I'm aware of."

Thank you for pointing me to the information, which I have already seen. I
was wondering if someone has coded up a script already to check a running
system, before I do it myself.



>
> >
> >
> >
> >>
> >> ---
> >> Sent from the Delta quadrant using Borg technology!
> >>
> >> On 2019-10-10 14:01, Brewer, Mitchell wrote:
> >>> I have an older Dell PowerEdge server with one hard drive, with CentOS
> >>> 7 currently installed. I wanted to do a clean install of CentOS 8, but
> >>> it doesn't pick up the hard drive. When I click on the destination to
> >>> pick the hard drive it only shows the USB drive that I'm installing
> >>> from. I checked for a RAID configuration on the server, but there is
> >>> only one disk, and no RAID is configured. The disk is controlled by
> >>> the PowerEdge Raid Controller (PERC), but when I disable that I lose
> >>> the disk completely. I suspect that PERC is part of the problem, but a
> >>> CentOS 7 install proceeds normally with PERC enabled. Do you know of a
> >>> change from CentOS 7 to 8 that would cause this, or if there is a
> >>> workaround? I've searched for several days and haven't found anything
> >>> yet.
> >>>
> >>>
> >>> Thank you!
> >>>
> >>>
> >>> Mitch
> >>>
> >>>
> >>> Mitchell Brewer
> >>> Research Systems Administrator
> >>> Laboratory for Physical Sciences (LPS)
> >>> (410)570-3516 (Mobile)
> >>> (443)-654-7897 (Office)
> >>> ___
> >>> CentOS mailing list
> >>> CentOS@centos.org
> >>> https://lists.centos.org/mailman/listinfo/centos
> >> ___
> >> CentOS mailing list
> >> CentOS@centos.org
> >> https://lists.centos.org/mailman/listinfo/centos
> >>
> >
> >
>
>
> --
> Ljubomir Ljubojevic
> (Love is in the Air)
> PL Computers
> Serbia, Europe
>
> StarOS, Mikrotik and CentOS/RHEL/Linux consultant
>


-- 

*Matt Phelps*

*Information Technology Specialist, Systems Administrator*

(Computation Facility, Smithsonian Astrophysical Observatory)

Center for Astrophysics | Harvard & Smithsonian


60 Garden Street | MS 39 | Cambridge, MA 02138
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Re: [CentOS] What is /etc/subuid ?

2019-10-10 Thread Valeri Galtsev 



On 2019-10-09 14:56, Mike Burger wrote:

On 2019-10-09 15:47, Valeri Galtsev wrote:

Dear Experts,


I am going to answer my own questions, sorry for using original post to 
reply to. I just decided to flatter myself answering what was addressed 
to Experts, even if it was I who did it ;-)




Could someone enlighten me about the following file:

/etc/subuid


Thanks to everyone who pointed me to actual purpose of this file.

appeared like potential compromise, which it wasn't>


Now that I tagged what I will write below, here are my findings.

Until release of current "version" of CentOS 7, namely version: 
7.7.1908, the following command that is part of shadow-utils package :


/usr/sbin/useradd

did not touch /etc/subuid file. This is true about version 4.1.5.1-25 
and older.


With new CentOS release shadow-utils were replaced with version 4.6.5, 
which has its default behavior changed, namely it does modify 
/etc/subuid file.


And here are my problems and reasons to be upset with this change:

1. The default behavior of the command /usr/sbin/useradd has changed

2. man page for the command /usr/sbin/useradd has no mentioning of 
/etc/subuid;


3. there is no way to change command behavior to what it was in the 
past, and no options related to /etc/subuid in useradd command



Incidentally, dealing with /etc/subuid was (or is it just "is?) reserved 
for the command /usr/sbin/usermod. And man page for usermod command has 
subuid in it. I am not going to discuss where (which command) dealing 
with /etc/subuid belongs to, keeping in mind the mood of the person who 
has investigated false case of compromise purely created by my system 
vendor. No, not system vendor, and not even upstream system vendor, the 
change actually actually appears to be made by the maintainer of 
shadow-utils (I see the same in Ubuntu system - just looked randomly 
into the box with different system).




Thanks again to everybody who gave their insights.

Valeri



? This file appears to be owned by "setup" package. This is CentOS 7
system, and until now these files if existed were never changed. Today
I have added user quite routine way, by doing

/usr/sbin/groupadd -g 4500 [username]
/usr/sbin/useradd -g [username] -u 4500 -c "User Name, email@domain" 
[username]


And the file /etc/subuid changed and user was added into it:

[username]:10:65536

Nothing like that was happening before. This is first time I create
account after update done on Oct 3, 2019. I checked several CentOS 7
machines, basically doing this:

 # grep subuid /usr/sbin/useradd
Binary file /usr/sbin/useradd matches

And CentOS 7 machines indeed may have that file name in the useradd
binary. None of CentOS 6 machines has that.

I tried to do FreeBSD-ism:

man /etc/subuid

came empty, and realized that I'm doing FreeBSD-ism.

I tried to do search on the web (did not "google", I use duckduckgo...
so I "did search"), and came pretty much empty.

Is it just me, or indeed something in CentOS 7 indeed changed? And 
what is it?


Another question on the same note: how do we find out what the file is
about and is used for in Linux, apart from searching on the web. (When
there are surprises like the one I had today, one does like to know
what this particular file is used for).


Thanks in advance for your answers.


A quick google search:

https://lmgtfy.com/?qtype=search&q=%2Fetc%2Fsubuid

yielded this as the first link:

http://man7.org/linux/man-pages/man5/subuid.5.html



--

Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247

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Re: [CentOS] CentOS 8 Broken Installation

2019-10-10 Thread Ljubomir Ljubojevic 
On 10/2/19 10:22 PM, Ljubomir Ljubojevic wrote:
> On 10/2/19 9:47 PM, Jonathan Billings wrote:
>> On Oct 2, 2019, at 3:39 PM, Ljubomir Ljubojevic  wrote:
>>> Richard on CentOS-devel mailing list has similar problem but suggests it
>>> might be issue only with CentOS, he says he had to add the kernel line
>>> to make it work.
>>> Name of the tread is:
>>> [CentOS-devel] Booting CentOS 8 in a VM - can't find the disk
>>
>>
>> If you’re talking about this:
>>
>> https://lists.centos.org/pipermail/centos-devel/2019-October/017882.html 
>> 
>>
>> … then I think it’s unlikely to be related to missing drivers for a RAID 
>> controller on a SuperMicro system.
>>
> 
> I saw it uses Intel hdd controler so I thought it could be similar.
> 
> Here is solution for instaling CentOS 8 on Dell T610 with SAS controler
> (copied from Mike Chan):
> 
> Intro:
> 
> ** Keyword: CentOS 8 LSI SAS2
> Trying CentOS 8 on an old machine (Dell T610) but the installer can't
> find disks for installation.
> 
> It turns out that the RH removed the support for LSI SAS2 controllers in
> the mpt3sas driver.
> 
> I've found some articles about this, and is trying to install with
> elrepo-provided DUD (driver update disk).
> 
> Will update the results and the procedure if succeeded.
> 
> At least it can serves as a warning to those with said SAS controllers.
> 

How to see if your HDD controler is not supported:

You can check by running the lspci command (lspci -nn) and compare it
with Red Hats list of removed ID's:
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/considerations_in_adopting_rhel_8/hardware-enablement_considerations-in-adopting-rhel-8#removed-adapters_hardware-enablement

Here is the list of all (so far created) the DUD's for EL8:
https://elrepo.org/linux/dud/el8/x86_64/

And here is ElRepo page http://elrepo.org/tiki/DeviceIDs that shows all
the drivers ElRepo has the drivers for, and can create DUD ISO files if
asked via ElRepo bugzila:
https://elrepo.org/bugs/main_page.php


> 
> Solution:
> 
> Reference:
> https://elrepoproject.blogspot.com/2019/08/rhel-80-and-support-for-removed-adapters.html
> 
> Here's the procedure:
> 1. prepare a install media and a flash drive, formatted with fat32, and
> copy the DUD iso file into the flash drive:
> https://elrepo.org/linux/dud/el8/x86_64/dd-mpt3sas-27.101.00.00-1.el8_0.elrepo.iso.
> You can also use tools to create a bootable install flash drive, and use
> it as the DUD drive.
> No need to process the iso; just place it in the drive.
> 
> 2. boot with the install media, and hit tab key in the boot menu, add
> 'inst.dd' to the command line, and then boot it.
> 
> 3. the installer will ask for a DUD before getting into the GUI.
> It will list the block devices it found, find the one with vfat - that's
> your flash drive.
> Then it will list DUD isos it found on the drive, enter the number of
> the entry, then a "checkbox" will appear before the entry.
> Enter the number again so the "checkbox" is checked with a x. Now enter
> "c" to contiune.
> 
> 4. If everything works, you'll have your disks visible to the installer.
> Install it as usual.
> 
> 5. The booting should has no problem, but DO NOT update kernel just yet.
> According to the reference page, the dracut tool in RHEL / CentOS 8.0 is
> bugged and will NOT include the extra driver to the updated initrd. This
> will make the new kernel unbootable.
> Setup network to download the patched dracut tools first, or copy it
> from other computer with flash drive:
> http://elrepo.org/people/akemi/testing/el8/dracut/
> Then install them with:
> rpm -Uvh (downloaded rpm files).
> 
> 6. Now you can update the kernel.
> 
> In my case, I'm using the card in IT mode; the disks are not set into
> RAID with the card, so only the mpt3sas DUD is required.
> If you have a IR mode (RAID via the controller) configuration, you may
> need the megaraid-sas DUD too.
> 
> Original post with solution:
> https://www.facebook.com/groups/centosproject/permalink/10157729112557728/?comment_id=10157729981242728
> 
> 
> 
>> --
>> Jonathan Billings 
>>
>>
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>>
> 
> 


-- 
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(Love is in the Air)
PL Computers
Serbia, Europe

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Re: [CentOS] CentOS 8 Installation Not Recognizing Local Disk

2019-10-10 Thread Ljubomir Ljubojevic 
On 10/10/19 3:18 PM, Phelps, Matthew wrote:
> On Thu, Oct 10, 2019 at 9:04 AM Nux!  wrote:
> 
>> There was a recent thread about Redhat's removal of drivers from LSI
>> SAS2, it's probably the problem you are facing.
>> It can be worked around with the help of Elrepo repo.
>>
>>
>> https://lists.centos.org/pipermail/centos/2019-October/173682.html
>>
>>
>> https://elrepoproject.blogspot.com/2019/08/rhel-80-and-support-for-removed-adapters.html
>>
>>
>> https://elrepo.org/linux/dud/el8/x86_64/dd-mpt3sas-27.101.00.00-1.el8_0.elrepo.iso
>>
>>
>>
> Is there a utility somewhere to check a running system to see if it is
> going to be supported in RHEL/CentOS 8?

If you read the ElRepo Blog, you would know the following:

You can check by running the lspci command (lspci -nn) and compare it
with Red Hats list of removed ID's:
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/considerations_in_adopting_rhel_8/hardware-enablement_considerations-in-adopting-rhel-8#removed-adapters_hardware-enablement

Here is the list of all (so far created) the DUD's for EL8:
https://elrepo.org/linux/dud/el8/x86_64/

And here is ElRepo page http://elrepo.org/tiki/DeviceIDs that shows all
the drivers ElRepo has the drivers for, and can create DUD ISO files if
asked via ElRepo bugzila:
https://elrepo.org/bugs/main_page.php


> 
> 
> 
>>
>> ---
>> Sent from the Delta quadrant using Borg technology!
>>
>> On 2019-10-10 14:01, Brewer, Mitchell wrote:
>>> I have an older Dell PowerEdge server with one hard drive, with CentOS
>>> 7 currently installed. I wanted to do a clean install of CentOS 8, but
>>> it doesn't pick up the hard drive. When I click on the destination to
>>> pick the hard drive it only shows the USB drive that I'm installing
>>> from. I checked for a RAID configuration on the server, but there is
>>> only one disk, and no RAID is configured. The disk is controlled by
>>> the PowerEdge Raid Controller (PERC), but when I disable that I lose
>>> the disk completely. I suspect that PERC is part of the problem, but a
>>> CentOS 7 install proceeds normally with PERC enabled. Do you know of a
>>> change from CentOS 7 to 8 that would cause this, or if there is a
>>> workaround? I've searched for several days and haven't found anything
>>> yet.
>>>
>>>
>>> Thank you!
>>>
>>>
>>> Mitch
>>>
>>>
>>> Mitchell Brewer
>>> Research Systems Administrator
>>> Laboratory for Physical Sciences (LPS)
>>> (410)570-3516 (Mobile)
>>> (443)-654-7897 (Office)
>>> ___
>>> CentOS mailing list
>>> CentOS@centos.org
>>> https://lists.centos.org/mailman/listinfo/centos
>> ___
>> CentOS mailing list
>> CentOS@centos.org
>> https://lists.centos.org/mailman/listinfo/centos
>>
> 
> 


-- 
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(Love is in the Air)
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Re: [CentOS] CentOS 8 Installation Not Recognizing Local Disk

2019-10-10 Thread Ljubomir Ljubojevic 
Hi guys.

Somebody should use info from my mail
(https://lists.centos.org/pipermail/centos/2019-October/173682.html) to
create a page in Wiki and maybe even special notice on main Web page, it
looks like next few months people will continually ask for that info as
they go to move to install CentOS 8.

It might be worth thinking over how to provide that info (Wiki) inside
installer for 8.1, 8.2, etc. if no disks are detected.



On 10/10/19 3:04 PM, Nux! wrote:
> There was a recent thread about Redhat's removal of drivers from LSI
> SAS2, it's probably the problem you are facing.
> It can be worked around with the help of Elrepo repo.
> 
> 
> https://lists.centos.org/pipermail/centos/2019-October/173682.html
> 
> https://elrepoproject.blogspot.com/2019/08/rhel-80-and-support-for-removed-adapters.html
> 
> 
> https://elrepo.org/linux/dud/el8/x86_64/dd-mpt3sas-27.101.00.00-1.el8_0.elrepo.iso
> 
> 
> 
> 
> ---
> Sent from the Delta quadrant using Borg technology!
> 
> On 2019-10-10 14:01, Brewer, Mitchell wrote:
>> I have an older Dell PowerEdge server with one hard drive, with CentOS
>> 7 currently installed. I wanted to do a clean install of CentOS 8, but
>> it doesn't pick up the hard drive. When I click on the destination to
>> pick the hard drive it only shows the USB drive that I'm installing
>> from. I checked for a RAID configuration on the server, but there is
>> only one disk, and no RAID is configured. The disk is controlled by
>> the PowerEdge Raid Controller (PERC), but when I disable that I lose
>> the disk completely. I suspect that PERC is part of the problem, but a
>> CentOS 7 install proceeds normally with PERC enabled. Do you know of a
>> change from CentOS 7 to 8 that would cause this, or if there is a
>> workaround? I've searched for several days and haven't found anything
>> yet.
>>
>>
>> Thank you!
>>
>>
>> Mitch
>>
>>
>> Mitchell Brewer
>> Research Systems Administrator
>> Laboratory for Physical Sciences (LPS)
>> (410)570-3516 (Mobile)
>> (443)-654-7897 (Office)
>> ___
>> CentOS mailing list
>> CentOS@centos.org
>> https://lists.centos.org/mailman/listinfo/centos
> ___
> CentOS mailing list
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> https://lists.centos.org/mailman/listinfo/centos
> 


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Re: [CentOS] CentOS 8 Installation Not Recognizing Local Disk

2019-10-10 Thread Phelps, Matthew 
On Thu, Oct 10, 2019 at 9:04 AM Nux!  wrote:

> There was a recent thread about Redhat's removal of drivers from LSI
> SAS2, it's probably the problem you are facing.
> It can be worked around with the help of Elrepo repo.
>
>
> https://lists.centos.org/pipermail/centos/2019-October/173682.html
>
>
> https://elrepoproject.blogspot.com/2019/08/rhel-80-and-support-for-removed-adapters.html
>
>
> https://elrepo.org/linux/dud/el8/x86_64/dd-mpt3sas-27.101.00.00-1.el8_0.elrepo.iso
>
>
>
Is there a utility somewhere to check a running system to see if it is
going to be supported in RHEL/CentOS 8?



>
> ---
> Sent from the Delta quadrant using Borg technology!
>
> On 2019-10-10 14:01, Brewer, Mitchell wrote:
> > I have an older Dell PowerEdge server with one hard drive, with CentOS
> > 7 currently installed. I wanted to do a clean install of CentOS 8, but
> > it doesn't pick up the hard drive. When I click on the destination to
> > pick the hard drive it only shows the USB drive that I'm installing
> > from. I checked for a RAID configuration on the server, but there is
> > only one disk, and no RAID is configured. The disk is controlled by
> > the PowerEdge Raid Controller (PERC), but when I disable that I lose
> > the disk completely. I suspect that PERC is part of the problem, but a
> > CentOS 7 install proceeds normally with PERC enabled. Do you know of a
> > change from CentOS 7 to 8 that would cause this, or if there is a
> > workaround? I've searched for several days and haven't found anything
> > yet.
> >
> >
> > Thank you!
> >
> >
> > Mitch
> >
> >
> > Mitchell Brewer
> > Research Systems Administrator
> > Laboratory for Physical Sciences (LPS)
> > (410)570-3516 (Mobile)
> > (443)-654-7897 (Office)
> > ___
> > CentOS mailing list
> > CentOS@centos.org
> > https://lists.centos.org/mailman/listinfo/centos
> ___
> CentOS mailing list
> CentOS@centos.org
> https://lists.centos.org/mailman/listinfo/centos
>


-- 

*Matt Phelps*

*Information Technology Specialist, Systems Administrator*

(Computation Facility, Smithsonian Astrophysical Observatory)

Center for Astrophysics | Harvard & Smithsonian


60 Garden Street | MS 39 | Cambridge, MA 02138
email: mphe...@cfa.harvard.edu


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Re: [CentOS] CentOS 8 Installation Not Recognizing Local Disk

2019-10-10 Thread Nux! 
There was a recent thread about Redhat's removal of drivers from LSI 
SAS2, it's probably the problem you are facing.

It can be worked around with the help of Elrepo repo.


https://lists.centos.org/pipermail/centos/2019-October/173682.html

https://elrepoproject.blogspot.com/2019/08/rhel-80-and-support-for-removed-adapters.html

https://elrepo.org/linux/dud/el8/x86_64/dd-mpt3sas-27.101.00.00-1.el8_0.elrepo.iso



---
Sent from the Delta quadrant using Borg technology!

On 2019-10-10 14:01, Brewer, Mitchell wrote:

I have an older Dell PowerEdge server with one hard drive, with CentOS
7 currently installed. I wanted to do a clean install of CentOS 8, but
it doesn't pick up the hard drive. When I click on the destination to
pick the hard drive it only shows the USB drive that I'm installing
from. I checked for a RAID configuration on the server, but there is
only one disk, and no RAID is configured. The disk is controlled by
the PowerEdge Raid Controller (PERC), but when I disable that I lose
the disk completely. I suspect that PERC is part of the problem, but a
CentOS 7 install proceeds normally with PERC enabled. Do you know of a
change from CentOS 7 to 8 that would cause this, or if there is a
workaround? I've searched for several days and haven't found anything
yet.


Thank you!


Mitch


Mitchell Brewer
Research Systems Administrator
Laboratory for Physical Sciences (LPS)
(410)570-3516 (Mobile)
(443)-654-7897 (Office)
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[CentOS] CentOS 8 Installation Not Recognizing Local Disk

2019-10-10 Thread Brewer, Mitchell 
I have an older Dell PowerEdge server with one hard drive, with CentOS 7 
currently installed. I wanted to do a clean install of CentOS 8, but it doesn't 
pick up the hard drive. When I click on the destination to pick the hard drive 
it only shows the USB drive that I'm installing from. I checked for a RAID 
configuration on the server, but there is only one disk, and no RAID is 
configured. The disk is controlled by the PowerEdge Raid Controller (PERC), but 
when I disable that I lose the disk completely. I suspect that PERC is part of 
the problem, but a CentOS 7 install proceeds normally with PERC enabled. Do you 
know of a change from CentOS 7 to 8 that would cause this, or if there is a 
workaround? I've searched for several days and haven't found anything yet.


Thank you!


Mitch


Mitchell Brewer
Research Systems Administrator
Laboratory for Physical Sciences (LPS)
(410)570-3516 (Mobile)
(443)-654-7897 (Office)
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Re: [CentOS] RAID controller recommendations that are supported by RHEL/CentOS 8?

2019-10-10 Thread Ljubomir Ljubojevic 
On 10/10/19 11:45 AM, Dennis Jacobfeuerborn wrote:
> Hi,
> I'm currently looking for a RAID controller with BBU/CacheVault and
> while LSI MegaRaid controllers worked well in the past apparently they
> are no longer supported in RHEL 8:
> https://access.redhat.com/discussions/3722151
> 
> Does anybody have recommendations for for hardware controllers with
> cache that should work in both CentOS 7 and 8 out of the box?
> 
> Regards,
>   Dennis
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> 

Maybe installing ElRepo driver from driver iso can help:

https://lists.centos.org/pipermail/centos/2019-October/173682.html

-- 
Ljubomir Ljubojevic
(Love is in the Air)
PL Computers
Serbia, Europe

StarOS, Mikrotik and CentOS/RHEL/Linux consultant
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[CentOS] RAID controller recommendations that are supported by RHEL/CentOS 8?

2019-10-10 Thread Dennis Jacobfeuerborn 
Hi,
I'm currently looking for a RAID controller with BBU/CacheVault and
while LSI MegaRaid controllers worked well in the past apparently they
are no longer supported in RHEL 8:
https://access.redhat.com/discussions/3722151

Does anybody have recommendations for for hardware controllers with
cache that should work in both CentOS 7 and 8 out of the box?

Regards,
  Dennis
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