[PVE-User] PVE is using CEPH 12.2.7 but 10.2.5 is only avaible in Debian repos

[Jonathan Sélea]

Hi,



I am trying to diagnose a performance issue we have in our cluster.
What we found is that Proxmox 5 is using Ceph Luminous 12.2.7, but our
clients that is mounting Cephfs is running Jewel 10.2.5 – Is this an issue?
Could this degrade the performance between the clients and the cluster?

[Alexandre DERUMIER]

Post by Jonathan Sélea
I am trying to diagnose a performance issue we have in our cluster.
What we found is that Proxmox 5 is using Ceph Luminous 12.2.7, but our
clients that is mounting Cephfs is running Jewel 10.2.5 – Is this an issue?

It's better to use matching version packages for client too. (last kernel or last ceph-fuse).

ceph.com provide packages for debian with differents release

http://docs.ceph.com/docs/master/install/get-packages/?highlight=debian

----- Mail original -----
De: "Jonathan Sélea" <***@selea.se>
À: "proxmoxve" <pve-***@pve.proxmox.com>
Envoyé: Mardi 11 Septembre 2018 08:56:24
Objet: [PVE-User] PVE is using CEPH 12.2.7 but 10.2.5 is only avaible in Debian repos

Hi,



I am trying to diagnose a performance issue we have in our cluster.
What we found is that Proxmox 5 is using Ceph Luminous 12.2.7, but our
clients that is mounting Cephfs is running Jewel 10.2.5 – Is this an issue?
Could this degrade the performance between the clients and the cluster?




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[Jonathan Sélea]

Post by Alexandre DERUMIER

Post by Jonathan Sélea
I am trying to diagnose a performance issue we have in our cluster.
What we found is that Proxmox 5 is using Ceph Luminous 12.2.7, but our
clients that is mounting Cephfs is running Jewel 10.2.5 – Is this an issue?

It's better to use matching version packages for client too. (last
kernel or last ceph-fuse).
ceph.com provide packages for debian with differents release
http://docs.ceph.com/docs/master/install/get-packages/?highlight=debian

Thanks!
But unfortunately it seems they only offer Jewel via the repositories
for Debian 9.
I guess I have to upgrade the kernel.

Does maybee the linux-libre kernel support it? Or have they removed ceph
support for some reason.

[Rhonda D'Vine]

Hey,

Post by Jonathan Sélea

Post by Alexandre DERUMIER

Post by Jonathan Sélea
I am trying to diagnose a performance issue we have in our cluster.
What we found is that Proxmox 5 is using Ceph Luminous 12.2.7, but our
clients that is mounting Cephfs is running Jewel 10.2.5 – Is this
an issue?

It's better to use matching version packages for client too. (last
kernel or last ceph-fuse).
ceph.com provide packages for debian with differents release
http://docs.ceph.com/docs/master/install/get-packages/?highlight=debian

Thanks!
But unfortunately it seems they only offer Jewel via the repositories
for Debian 9.
I guess I have to upgrade the kernel.

 You sure about that? I can see
https://download.ceph.com/debian-luminous/dists/stretch/ there, and the
instructions from their docs worked for me:

:~# apt-cache policy ceph
ceph:
  Installed: (none)
  Candidate: 12.2.8-1~bpo90+1
  Version table:
     12.2.8-1~bpo90+1 500
        500 https://download.ceph.com/debian-luminous stretch/main amd64
Packages
     10.2.5-7.2 500
        500 http://ftp.at.debian.org/debian stretch/main amd64 Packages

 Can you tell us what you tried and didn't work for you? This is the
sources.list entry that I added for it:

deb https://download.ceph.com/debian-luminous/ stretch main

 Hope that helps,
Rhonda

[Jonathan Sélea]

Hi,
I am just mount cephfs via fstab - I have not installed anything
ceph-related but I am relying on the kernel driver.
As far as I know, this cannot really be updated unless I upgrade the
kernel?
http://docs.ceph.com/docs/master/cephfs/kernel/

The machine does not run ceph itself.

Please correct me if I am wrong :)

/ Jonathan

Post by Rhonda D'Vine
 You sure about that? I can see
https://download.ceph.com/debian-luminous/dists/stretch/ there, and the
:~# apt-cache policy ceph
  Installed: (none)
  Candidate: 12.2.8-1~bpo90+1
     12.2.8-1~bpo90+1 500
        500 https://download.ceph.com/debian-luminous stretch/main
amd64
Packages
     10.2.5-7.2 500
        500 http://ftp.at.debian.org/debian stretch/main amd64 Packages
 Can you tell us what you tried and didn't work for you? This is the
deb https://download.ceph.com/debian-luminous/ stretch main
 Hope that helps,
Rhonda
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[Alexandre DERUMIER]

Post by Rhonda D'Vine

Post by Jonathan Sélea
Hi,
I am just mount cephfs via fstab - I have not installed anything
ceph-related but I am relying on the kernel driver.
As far as I know, this cannot really be updated unless I upgrade the
kernel?
[ http://docs.ceph.com/docs/master/cephfs/kernel/ | http://docs.ceph.com/docs/master/cephfs/kernel/ ]

Yes,indeed. If you use the kernel client, it's related to kernel version. (which is faster than fuse version)

Old kernel client is compatible with new ceph, but sometime miss new features. (and quota for examples)



----- Mail original -----
De: "Jonathan Sélea" <***@selea.se>
À: "proxmoxve" <pve-***@pve.proxmox.com>
Envoyé: Mercredi 12 Septembre 2018 10:58:57
Objet: Re: [PVE-User] PVE is using CEPH 12.2.7 but 10.2.5 is only avaible in Debian repos

Hi,
I am just mount cephfs via fstab - I have not installed anything
ceph-related but I am relying on the kernel driver.
As far as I know, this cannot really be updated unless I upgrade the
kernel?
http://docs.ceph.com/docs/master/cephfs/kernel/

The machine does not run ceph itself.

Please correct me if I am wrong :)

/ Jonathan

Post by Rhonda D'Vine
You sure about that? I can see
https://download.ceph.com/debian-luminous/dists/stretch/ there, and the
:~# apt-cache policy ceph
Installed: (none)
Candidate: 12.2.8-1~bpo90+1
12.2.8-1~bpo90+1 500
500 https://download.ceph.com/debian-luminous stretch/main
amd64
Packages
10.2.5-7.2 500
500 http://ftp.at.debian.org/debian stretch/main amd64 Packages
Can you tell us what you tried and didn't work for you? This is the
deb https://download.ceph.com/debian-luminous/ stretch main
Hope that helps,
Rhonda
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