Ussuri CentOS 8 add mptsas driver to introspection initramfs

Oliver Weinmann oliver.weinmann at me.com
Tue Sep 29 21:16:34 UTC 2020


I remember I tried something similar using one of the RHOSP guides and 
it failed at one step to build the image. I will try it again tomorrow.

Am 29.09.2020 um 23:02 schrieb Donny Davis:
> I think maybe you want to check out diskimage-builder
>
> Donny Davis
> c: 805 814 6800
>
> On Tue, Sep 29, 2020, 4:49 PM Oliver Weinmann <oliver.weinmann at me.com 
> <mailto:oliver.weinmann at me.com>> wrote:
>
>     Hi again,
>
>     I managed to install the kmod rpms in the overcloud-full.qcow2 image:
>
>     |sudo yum -y install
>     https:||//www.elrepo.org/elrepo-release-8.el8.elrepo.noarch.rpm
>     <http://www.elrepo.org/elrepo-release-8.el8.elrepo.noarch.rpm>|
>     |sudo yum -y install --downloadonly --downloaddir=. kmod-mptsas|
>     |sudo yum -y install --downloadonly --downloaddir=. kmod-megaraid_sas|
>     |
>     |
>     |The deployment works fine, but as soon as the node reboots it is
>     just stuck with a blinking cursor after loading the kernel.|
>     |
>     |
>     |Do I have to add something else to the overcloud-full image as well?
>     |
>     |
>     |
>     Am 15.09.2020 um 00:15 schrieb Donny Davis:
>>
>>
>>     On Fri, Sep 11, 2020 at 3:25 PM Oliver Weinmann
>>     <oliver.weinmann at icloud.com <mailto:oliver.weinmann at icloud.com>>
>>     wrote:
>>
>>         Hi,
>>
>>         I already asked this question on serverfault. But I guess
>>         here is a better place.
>>
>>         I have a very ancient hardware with a MPTSAS controller. I
>>         use this for TripleO deployment testing. With the release of
>>         Ussuri which is running CentOS8, I can no longer provision my
>>         overcloud nodes as the MPTSAS driver has been removed in CentOS8:
>>
>>         https://www.reddit.com/r/CentOS/comments/d93unk/centos8_and_removal_mpt2sas_dell_sas_drivers/
>>         <https://www.reddit.com/r/CentOS/comments/d93unk/centos8_and_removal_mpt2sas_dell_sas_drivers/>
>>
>>         I managed to include the driver provided from ELrepo in the
>>         introspection image but It is not loaded automatically:
>>
>>         All commands are run as user "stack".
>>
>>         Extract the introspection image:
>>
>>         cd ~
>>         mkdir imagesnew
>>         cd imagesnew
>>         tar xvf ../ironic-python-agent.tar
>>         mkdir ~/ipa-tmp
>>         cd ~/ipa-tmp
>>         /usr/lib/dracut/skipcpio
>>         ~/imagesnew/ironic-python-agent.initramfs | zcat | cpio -ivd
>>         | pax -r
>>
>>         Extract the contents of the mptsas driver rpm:
>>
>>         rpm2cpio ~/kmod-mptsas-3.04.20-3.el8_2.elrepo.x86_64.rpm | pax -r
>>
>>         Put the kernel module in the right places. To figure out
>>         where the module has to reside I installed the rpm on a
>>         already deployed node and used find to locate it.
>>
>>         xz -c
>>         ./usr/lib/modules/4.18.0-193.el8.x86_64/extra/mptsas/mptsas.ko
>>         >
>>         ./usr/lib/modules/4.18.0-193.6.3.el8_2.x86_64/kernel/drivers/message/fusion/mptsas.ko.xz
>>         mkdir
>>         ./usr/lib/modules/4.18.0-193.6.3.el8_2.x86_64/weak-updates/mptsas
>>         sudo ln -sf
>>         /lib/modules/4.18.0-193.el8.x86_64/extra/mptsas/mptsas.ko
>>         lib/modules/4.18.0-193.6.3.el8_2.x86_64/weak-updates/mptsas.ko
>>         sudo chown root . -R
>>         find . 2>/dev/null | sudo cpio --quiet -c -o | gzip -8  >
>>         ~/images/ironic-python-agent.initramfs
>>
>>         Upload the new image
>>
>>         cd ~/images
>>         openstack overcloud image upload --update-existing
>>         --image-path /home/stack/images/
>>
>>         Now when I start the introspection and ssh into the host I
>>         see no disks:
>>
>>         [root at localhost ~]# fdisk -l
>>         [root at localhost ~]# lsmod | grep mptsas
>>
>>         Once i manually load the driver, I can see the disks:
>>
>>
>>         [root at localhost ~]# modprobe mptsas
>>         [root at localhost ~]# lsmod | grep mptsas
>>         mptsas                 69632  0
>>         mptscsih               45056  1 mptsas
>>         mptbase                98304  2 mptsas,mptscsih
>>         scsi_transport_sas     45056  1 mptsas
>>         [root at localhost ~]# fdisk -l
>>         Disk /dev/sda: 67.1 GiB, 71999422464 bytes, 140623872 sectors
>>         Units: sectors of 1 * 512 = 512 bytes
>>         Sector size (logical/physical): 512 bytes / 512 bytes
>>         I/O size (minimum/optimal): 512 bytes / 512 bytes
>>
>>         But how can I make it so that it will automatically load on boot?
>>
>>         Best Regards,
>>
>>         Oliver
>>
>>
>>     I guess you could try using modules-load to load the module at boot.
>>
>>     > sudo ln -sf
>>     /lib/modules/4.18.0-193.el8.x86_64/extra/mptsas/mptsas.ko
>>     lib/modules/4.18.0-193.6.3.el8_2.x86_64/weak-updates/mptsas.ko
>>     echo "mptsas" > ./etc/modules-load.d/mptsas.conf
>>     > sudo chown root . -R
>>
>>     Also I would have a look see at these docs to build an image
>>     using ipa builder
>>     https://docs.openstack.org/ironic-python-agent-builder/latest/
>>     <https://docs.openstack.org/ironic-python-agent-builder/latest/>
>>     -- 
>>     ~/DonnyD
>>     C: 805 814 6800
>>     "No mission too difficult. No sacrifice too great. Duty First"
>
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