OS not supported

[jorpilo]

I am using:
CentOS Linux release 7.4.1708
Kernel: 4.13.4-1.el7.elrepo.x86_64

When trying to create a GW it says
Failed : iscsi0 failed package validation checks - OS is unsupported

why can it be, what OS do I need?

[xiubli]

From rbd-target-api.py, you can see that:

valid_dists = ["redhat"]
valid_versions = ['7.4']

required_rpms = [
    {"name": "python-rtslib",
     "version": "2.1.fb64",
     "release": "0.1"},
    {"name": "tcmu-runner",
     "version": "1.3.0",
     "release": "0.2.3"}
]

k_vers = '3.10.0'
k_rel = '695.el7'

for now only "redhat" OS is supported.

[jorpilo]

Totally true, mainline checks for RedHat while 2.5 release doesn't do that checking

[mikechristie]

We are working on removing those checks. The code was originally tested/written against RHEL.

If you have a patch to check for upstream packages feel free to submit it. Ideally, we get rid of version checks and we can just dynamically detect if the kernel and various libs/tools supports what we need.

[xiubli]

@mikechristie

k_rel = '695.el7', 

One more question, does this kernel version has backported all the LIO/TCMU patches needed ?

[mikechristie]

No. We hit some issues with it. We are working on a new RHEL kernel. It's not done so I do not have the new version yet.

[shin2344234]

I have installed cli from source and have it almost working save for:

Failed : sbd-cephnode01 failed package validation checks - OS is unsupported,Kernel version too old - 3.10.0-695.el7 or above needed

When I try to add a gateway.

Is there any way to get a workaround for this temporarily, for centos, so I can test it? I'm not a python coder so I don't want to start mucking around.

Kernel/dist is:

CentOS Linux release 7.4.1708 (Core)
Linux sbd-cephnode01 3.10.0-693.5.2.el7.x86_64 #1 SMP Fri Oct 20 20:32:50 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

[rdoerr01]

I'm also trying to do a proof of concept using CEPH Luminous with iSCSI on CentOS 7.4. I checked the values returned by Python for "dist, rel, dist_id = platform.linux_distribution(full_distribution_name=0)" and then are in order "centos", "7.4.1708" and "Core". I even tried to modify the Python script at "/usr/bin/rbd-target-api", but even adding a simple "logger.info" doesn't execute, so I'm thinking the file must need to be modified elsewhere and then is compiled compress and storage elsewhere when you run "gwcli" since it doesn't execute this line of code.
cat /etc/centos-release: CentOS Linux release 7.4.1708 (Core)
uname -a: Linux ceph-mon-1 3.10.0-693.5.2.el7.x86_64 #1 SMP Fri Oct 20 20:32:50 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

[zerocarbthirty]

Can we maybe get someone to put in the docs that this absolutely only works in RHEL 7.4 so that people don't waste large swaths of time trying to get this running in CentOS?

[jorpilo]

I does work with others OS but kernel and code fixes are needed. I dont even know if it totally works for RHEL 7.4 as kernel fixes are planned for 7.5
http://lists.ceph.com/pipermail/ceph-users-ceph.com/2017-November/022779.html

[mikechristie]

Hi,

For the distro issue you should be able to use skipchecks=true when setting up the gateway. I also just did a PR to remove the RH checks from that function and make them more generic:

#53

There is sill one piece you will be missing and that is the kernel. Without the patches kernel you will get errors during device setup about the kernel being unsupported. I am trying to get a upstream kernel uploaded with the required patches to github.com/ceph/ceph-client by tomorrow so you can test against that. I will update this Issue when that gets done.

[mikechristie]

Oh yeah, if you find more RH distro specific checks please let me know and I will kill them.

[mikechristie]

I am trying to get a upstream kernel uploaded with the required patches to github.com/ceph/ceph-client by tomorrow

Hey, Just a quick update. A bug was found with the upstream code. I am trying to get it fixed and this stuff pushed by Wed.

[gelato]

Or... You could just get them from here:
https://shaman.ceph.com/repos/ceph-iscsi-config/master/
https://shaman.ceph.com/repos/ceph-iscsi-cli/master/

[gelato]

All of them, mate... https://shaman.ceph.com/
You can install everything related to ceph iscsi gateway from there.

[jorpilo]

Thanks a lot for the repo. Really useful.
Are all the rpms updated?
Do main kernels there have all the patches needed to run ceph-iscsi?