XCP-ng 8.0.0 Beta now available!

AllooTikeeChaat

Installed fine on one of my Intel X56XX based system and the system boots into XCP 8.0 although the zfs local storage wasn't mounted and a repair fails as well.

modprobe zfs fails with "module zfs not found"

Is there any updated ZFS documentation for 8.0 that would help?

stormi

zfs is not part of the default installation, so you need to install it manually using yum from our repositories. Documentation on the wiki has not been updated yet for 8.0: https://github.com/xcp-ng/xcp/wiki/ZFS-on-XCP-ng
Now the zfs packages are directly in our main repositories, no need to add extra --enablerepo options. Just yum install zfs.

I've just built an updated zfs package (new major version 0.8.0 instead of the 0.7.3 that was initially available in the repos for the beta) in the hope that it solves some of the issues we had with previous versions (such as VDI export or the need to patch some packages to remove the use of O_DIRECT). I'm just waiting for the main mirror to sync to test that it installs fine.

AllooTikeeChaat

@stormi Thanks for the quick reply .. tried the yum install zfs and it errors with the following:

stormi

That's why I told that I'm waiting for the main mirror to sync
And the build machine is having a "I'm feeling all slow" moment.

AllooTikeeChaat

@stormi Ok..... silly me .. will wait for you to give the aok.

stormi

@AllooTikeeChaat You can now try.

AllooTikeeChaat

@stormi still broken .. same error

stormi

@AllooTikeeChaat yum considers that your medata are recent enough. Ask it to clean them: yum clean all.

AllooTikeeChaat

@stormi yum clean all worked. Installed aok and modprobe zfs doesn't complain so that's all good.

A repair of the ZFS SR fails with the same error and "zpool status: no pools available" and "zfs list no datasets available".

I'll open a new post if I can't get it working rather than replying to this one.

Update: fixed the issue ..

olivierlambert

Which was? (the issue)

AllooTikeeChaat

@olivierlambert
(1) Missing the ZFS packages from the base install.
(2) Needed a "yum clean all" to be able to install zfs packages.
(3) Needed to manually import the ZFS zpool

I'm a noob with zfs so had to work out how to import an existing zpool and once thats done it can be repaired/mounted.

olivierlambert

Good So now you are on ZoL 0.8, no need to disable sync anymore

AllooTikeeChaat

@olivierlambert
I'm assuming that sync is enabled by default ?

olivierlambert

Yup, but before (0.8) it wasn't good for performances, at all, due to cache poisoning (no O_DIRECT support).

cocoon

Any chance to get a newer lsblk that supports json output?
Would be great for plugins and would make parsing output much easier.

Currently installed on XCP-ng 8 beta: util-linux-2.23.2-52.el7_5.1.x86_64

(something later than v2.27?)
https://git.devuan.org/CenturionDan/util-linux/commit/4a102a4871fdb415f4de5af9ffb7a2fb8926b5d1

... ah forget it, I see, CentOS is using the old versions since long time ...

stormi

@cocoon said in XCP-ng 8.0.0 Beta now available!:

... ah forget it, I see, CentOS is using the old versions since long time ...

Yeah the chances that we'd change the version of such a low level package just for added functionality are very low.

cocoon

@stormi yes and I totally understand that ... I just thought at first, it is so old, there must be something new if CentOS 7.5 is new ... but no

akurzawa

hi

Is this possible to install xcp-ng in xcp-ng just for tests?

ruskofd

Sure you need to enable Nested Virtualization when you create your VM and that's it.

borzel

@akurzawa https://github.com/xcp-ng/xcp/wiki/Testing-XCP-ng-in-Virtual-Machine-(Nested-Virtualization)