6:38 p.m.
I am researching how to contribute to the oVirt community. I started here:
https://www.ovirt.org/community/
And, I immediately saw to sign up for this email address and...send us an email saying how
you would like to contribute. Visit our[mailing
lists](https://lists.ovirt.org/archives/)page for other oVirt mailing lists to sign up
for.
My answers are: I want to be useful (and give more than I take). I can answer questions on
mailing lists, help troubleshoot, write ovirt.ovirt Ansible collections, roles and custom
modules. I am a seasoned Python programmer.
My background:
- Python programmer for 10+ years
- I write custom Ansible modules, roles, playbook, etc.
- Previous DBA for Informix (highly certified but who has heard of informix anymore).
Postgres and Informix are cousins (both offspring from Ingres)
- I have *some* rudimentary knowledge of Virtualization. However, I'm far from an
expert
- One of my favorite OS's is Qubes (an OS of virtual machines really)
- I do a lot of technical training (writing materials and facilitating classes)
- I work in an SRE / SysAd role at a large company that puts music in peoples ears
(I'm hoping to move some of this from less SysAd and more SRE when with some of this
oVirt stuff we're working on).
My intermediate skills
- I have bought a book on libvirt. But, it's still on my backlog. It feels that
I'm always sucking an ocean through a straw so I have to pick and choose what I read
next
- My second favorite OS is Ubuntu as my main desktop (Qubes on separate computer for more
secure stuff -- like crypto)
- I'm just starting to use Virtual Machine Manager to run other OSs on Ubuntu
My Oh-I-have-No-Idea skills:
- things like luns, iSCSI and the `vdsm-tool config-lvm-filter` are making me pull my hair
out. This is the reason I was frustrated enough to say "Let me join this community so
I can learn more how this architecture works."
- I work for a large company that has a RedHat support contract. We use RHV. I just wrote
up this long descriptive case of the problem, uploaded sosreports, added as much detail as
I could. But, it's crickets. If I knew more I could debug what was happening more
myself.
How did I do for an introduction?
Cheers,
Glen Jarvis
11:01 a.m.
Hi Glen, welcome to oVirt community! Replies are inline:
Il giorno ven 11 feb 2022 alle ore 06:57 Glen Jarvis via Users <
users(a)ovirt.org> ha scritto:
I am researching how to contribute to the oVirt community. I started
here:
https://www.ovirt.org/community/
And, I immediately saw to sign up for this email address and...send us an
email saying how you would like to contribute. Visit our mailing lists
<https://lists.ovirt.org/archives/> page for other oVirt mailing lists to
sign up for.
My answers are: I want to be useful (and give more than I take). I can
answer questions on mailing lists, help troubleshoot, write ovirt.ovirt
Ansible collections, roles and custom modules. I am a seasoned Python
programmer.
Here you are in the right place for helping answering questions and
troubleshooting users' issues.
I would redirect you to the devel mailing list at
https://lists.ovirt.org/archives/list/devel@ovirt.org/ for helping with the
development of Ansible collections, roles and modules.
I kindly ask @Martin Necas <mnecas(a)redhat.com> to help you onboarding in
this area.
My background:
- Python programmer for 10+ years
- I write custom Ansible modules, roles, playbook, etc.
- Previous DBA for Informix (highly certified but who has heard of
informix anymore). Postgres and Informix are cousins (both offspring from
Ingres)
- I have *some* rudimentary knowledge of Virtualization. However, I'm
far from an expert
- One of my favorite OS's is Qubes (an OS of virtual machines really)
- I do a lot of technical training (writing materials and facilitating
classes)
- I work in an SRE / SysAd role at a large company that puts music in
peoples ears (I'm hoping to move some of this from less SysAd and more SRE
when with some of this oVirt stuff we're working on).
My intermediate skills
- I have bought a book on libvirt. But, it's still on my backlog. It
feels that I'm always sucking an ocean through a straw so I have to pick
and choose what I read next
- My second favorite OS is Ubuntu as my main desktop (Qubes on
separate computer for more secure stuff -- like crypto)
- I'm just starting to use Virtual Machine Manager to run other OSs on
Ubuntu
My Oh-I-have-No-Idea skills:
- things like luns, iSCSI and the `vdsm-tool config-lvm-filter` are
making me pull my hair out. This is the reason I was frustrated enough to
say "Let me join this community so I can learn more how this architecture
works."
- I work for a large company that has a RedHat support contract. We use
RHV. I just wrote up this long descriptive case of the problem, uploaded
sosreports, added as much detail as I could. But, it's crickets. If I knew
more I could debug what was happening more myself.
How did I do for an introduction?
I think you did it great :-)
Cheers,
Glen Jarvis
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--
Sandro Bonazzola
MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV
Red Hat EMEA <https://www.redhat.com/>
sbonazzo(a)redhat.com
<https://www.redhat.com/>
*Red Hat respects your work life balance. Therefore there is no need to
answer this email out of your office hours.*
5:42 a.m.
On Fri, Feb 11, 2022 at 5:02 PM Sandro Bonazzola <sbonazzo(a)redhat.com>
wrote:
Hi Glen, welcome to oVirt community! Replies are inline:
Il giorno ven 11 feb 2022 alle ore 06:57 Glen Jarvis via Users <
users(a)ovirt.org> ha scritto:
> I am researching how to contribute to the oVirt community. I started here:
>
> https://www.ovirt.org/community/
>
> And, I immediately saw to sign up for this email address and...send us an
> email saying how you would like to contribute. Visit our mailing lists
> <https://lists.ovirt.org/archives/> page for other oVirt mailing lists
> to sign up for.
>
>
> My answers are: I want to be useful (and give more than I take). I can
> answer questions on mailing lists, help troubleshoot, write ovirt.ovirt
> Ansible collections, roles and custom modules. I am a seasoned Python
> programmer.
>
Here you are in the right place for helping answering questions and
troubleshooting users' issues.
I would redirect you to the devel mailing list at
https://lists.ovirt.org/archives/list/devel@ovirt.org/ for helping with
the development of Ansible collections, roles and modules.
I kindly ask @Martin Necas <mnecas(a)redhat.com> to help you onboarding in
this area.
Hi Glen,
sorry for the late response.
I would be more than happy to welcome any of your contributions/suggestions
to the ansible collection.
Feel free to contact me at mnecas(a)redhat.com and we can have chat and I can
introduce you
to our oVirt ansible collection development process.
Martin Necas
7:01 p.m.
On Fri, Feb 11, 2022 at 7:57 AM Glen Jarvis via Users <users(a)ovirt.org> wrote:
I am researching how to contribute to the oVirt community. I started here:
https://www.ovirt.org/community/
And, I immediately saw to sign up for this email address and...send us an email saying
how you would like to contribute. Visit our mailing lists page for other oVirt mailing
lists to sign up for.
My answers are: I want to be useful (and give more than I take). I can answer questions
on mailing lists, help troubleshoot, write ovirt.ovirt Ansible collections, roles and
custom modules. I am a seasoned Python programmer.
My background:
- Python programmer for 10+ years
- I write custom Ansible modules, roles, playbook, etc.
- Previous DBA for Informix (highly certified but who has heard of informix anymore).
Postgres and Informix are cousins (both offspring from Ingres)
- I have *some* rudimentary knowledge of Virtualization. However, I'm far from an
expert
- One of my favorite OS's is Qubes (an OS of virtual machines really)
- I do a lot of technical training (writing materials and facilitating classes)
- I work in an SRE / SysAd role at a large company that puts music in peoples ears
(I'm hoping to move some of this from less SysAd and more SRE when with some of this
oVirt stuff we're working on).
My intermediate skills
- I have bought a book on libvirt. But, it's still on my backlog. It feels that
I'm always sucking an ocean through a straw so I have to pick and choose what I read
next
- My second favorite OS is Ubuntu as my main desktop (Qubes on separate computer for
more secure stuff -- like crypto)
- I'm just starting to use Virtual Machine Manager to run other OSs on Ubuntu
My Oh-I-have-No-Idea skills:
- things like luns, iSCSI and the `vdsm-tool config-lvm-filter` are making me pull my
hair out.
I would like to know why "vdsm-tool config-lvm-filter" makes you pull
your hair out.
It was designed to help people configure their system correctly without
pulling their hair out trying to understand how lvm filter works, and avoid
the many wrong ways it can be used.
This is the reason I was frustrated enough to say "Let me join
this community so I can learn more how this architecture works."
- I work for a large company that has a RedHat support contract. We use RHV. I just
wrote up this long descriptive case of the problem, uploaded sosreports, added as much
detail as I could. But, it's crickets. If I knew more I could debug what was happening
more myself.
How did I do for an introduction?
Great!
Do you have some specific areas you would like to improve?
Nir
2:21 a.m.
I would like to know why "vdsm-tool config-lvm-filter"
makes
you pull your hair out.
It was designed to help people configure their system
correctly without pulling their hair out trying to
understand how lvm filter works, and avoid the many
wrong ways it can be used.
Honestly, it is just from a lack of understanding of what is happening when it does break
(as it is for us when doing a hypervisor install on a fresh box). Normally, I can just dig
through the stack and figure out what is happening. There are enough areas where I
don't have some foundations that I'm not able to do so here (yet).
For example, I don't quite understand iSCSI, Multipath, etc enough to know what is
breaking, and why.
I'm accustomed to being able to dig deeper at each level until I can generally see
what is breaking.
This confusion will go away as I get a bit more experience and have a "map" of
what is going on on this level.
FWIW, I started reading the Libvirt book previously mentioned and it's pretty straight
forward. It looks like I just need to get through this enough to get a good foothold so
that I can figure out how to either fix things when they break or point out properly why
something is breaking (so I can get the appropriate help).
Do you have some specific areas you would like to improve?
Actually, yes :) In:
1. Learn libvirt more (in progress)
2. Review source for vdsm-tool to have a better sense what is going on
3. Setup an iSCSI system so that I can make luns, build a system, play with storage pools
this way
Thanks for asking this. It's an interesting question.
Kindest Regards,
Glen Jarvis
2:35 a.m.
First,
you should subscribe to the list, otherwise you will always be moderated.
For the iSCSI, just can use 'targetcli' for setting up iscsi-target (yum
whatprovides "*/targetcli") and allow it in the firewall (firewall-cmd
--add-service=iscsi; firewall-cmd --runtime-to-permanent) .
On the client install multipath (device-mapper-multipath) and iscsiadm (yum whatprovides
"*/iscsiadm") , then check the man to configure multipath (if you use a separate
test VM) and the examples of the man page for iscsiadm for discovering and login to the
iSCSI target.
Don't use that client for production purposes as iscsid needs some tuning for using
with multipath (timeouts) /oVirt should have everything needed/.
In the end, 'lsscsi' should show your iscsi block device on the client and you can
play with it.
Best Regards,Strahil Nikolov
On Sun, Feb 13, 2022 at 8:53, Glen Jarvis via Users<users(a)ovirt.org> wrote:
I would like to know why "vdsm-tool config-lvm-filter"
makes
you pull your hair out.
It was designed to help people configure their system
correctly without pulling their hair out trying to
understand how lvm filter works, and avoid the many
wrong ways it can be used.
Honestly, it is just from a lack of understanding of what is happening when it does break
(as it is for us when doing a hypervisor install on a fresh box). Normally, I can just dig
through the stack and figure out what is happening. There are enough areas where I
don't have some foundations that I'm not able to do so here (yet).
For example, I don't quite understand iSCSI, Multipath, etc enough to know what is
breaking, and why.
I'm accustomed to being able to dig deeper at each level until I can generally see
what is breaking.
This confusion will go away as I get a bit more experience and have a "map" of
what is going on on this level.
FWIW, I started reading the Libvirt book previously mentioned and it's pretty straight
forward. It looks like I just need to get through this enough to get a good foothold so
that I can figure out how to either fix things when they break or point out properly why
something is breaking (so I can get the appropriate help).
Do you have some specific areas you would like to improve?
Actually, yes :) In:
1. Learn libvirt more (in progress)
2. Review source for vdsm-tool to have a better sense what is going on
3. Setup an iSCSI system so that I can make luns, build a system, play with storage pools
this way
Thanks for asking this. It's an interesting question.
Kindest Regards,
Glen Jarvis
_______________________________________________
Users mailing list -- users(a)ovirt.org
To unsubscribe send an email to users-leave(a)ovirt.org
Privacy Statement: https://www.ovirt.org/privacy-policy.html
oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/
List Archives:
https://lists.ovirt.org/archives/list/users@ovirt.org/message/3YUF5VI4PIL...
1:06 a.m.
First,
you should subscribe to the list, otherwise you will always be moderated.
I did initially subscribe. And, then when I saw that this was moderated, I also confirmed
again that i was subscribed to the list. I'm also receiving email from the other
questions to the list.
I thought possibly I had a moderate flag set because I was new. Is it possible that there
is a flag set for my subscribed user?
Cheers,
Glen
1:05 p.m.
It looks fine, so just ping me if you are still moderated.
Best Regards,Strahil Nikolov
On Mon, Feb 14, 2022 at 8:08, Glen Jarvis via Users<users(a)ovirt.org> wrote:
_______________________________________________
Users mailing list -- users(a)ovirt.org
To unsubscribe send an email to users-leave(a)ovirt.org
Privacy Statement: https://www.ovirt.org/privacy-policy.html
oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/
List Archives:
https://lists.ovirt.org/archives/list/users@ovirt.org/message/A2DVC5AQCVB...
6:28 p.m.
On Sat, Feb 12, 2022 at 9:21 AM Glen Jarvis <glen(a)glenjarvis.com> wrote:
> I would like to know why "vdsm-tool config-lvm-filter" makes
> you pull your hair out.
>
> It was designed to help people configure their system
> correctly without pulling their hair out trying to
> understand how lvm filter works, and avoid the many
> wrong ways it can be used.
Honestly, it is just from a lack of understanding of what is happening
when it does break (as it is for us when doing a hypervisor install on a
fresh box). Normally, I can just dig through the stack and figure out what
is happening. There are enough areas where I don't have some foundations
that I'm not able to do so here (yet).
For example, I don't quite understand iSCSI, Multipath, etc enough to know
what is breaking, and why.
I'm accustomed to being able to dig deeper at each level until I can
generally see what is breaking.
This confusion will go away as I get a bit more experience and have a
"map" of what is going on on this level.
FWIW, I started reading the Libvirt book previously mentioned and it's
pretty straight forward. It looks like I just need to get through this
enough to get a good foothold so that I can figure out how to either fix
things when they break or point out properly why something is breaking (so
I can get the appropriate help).
>
> Do you have some specific areas you would like to improve?
>
Actually, yes :) In:
1. Learn libvirt more (in progress)
2. Review source for vdsm-tool to have a better sense what is going on
3. Setup an iSCSI system so that I can make luns, build a system,
play
with storage pools this way
You may find vdsm/contrib/target tool useful:
https://github.com/oVirt/vdsm/blob/master/contrib/target
This tool makes it simple to create or delete a new iSCSI target for
development purposes.
The best way to add iSCSI server for development, is to create a new VM -
virt-manager is the easier way to do this, and install targetcli and copy
vdsm/contrib/target to the vm.
Then to create a new target you can run:
# ./target create mytarget
Creating target
target_name: mytarget
target_iqn: iqn.2003-01.org.alpine.mytarget
target_dir: /target/mytarget
lun_count: 10
lun_size: 100 GiB
cache: False
exists: False
Create target? [N/y]:
You may find the tool source interesting, explaining why we configure
the target in a certain way.
Nir
804
days inactive
824
days old
8 comments
5 participants
participants (5)
-
Glen Jarvis -
Martin Necas -
Nir Soffer -
Sandro Bonazzola -
Strahil Nikolov