Re: [ceph-users] Ceph on XenServer - RBD Image Size

2017-02-27 Thread Mike Jacobacci 
Hi Michal,

Yes I have considered that, but I felt it was easier to administer the VM's
without having to interact with Ceph every time. I have a another smaller
image that I backup VM configs/data to for cold storage... The VM's are for
internal resources so they are expendable.

I am totally open to change if I am doing something wrong.

Cheers,
Mike
>Hi Mike,
>
>Have you considered creating SR which doesn't make one huge RBD volume
>and on top of it creates LVM but instead creates separate RBD volumes
>for each VDI?
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Re: [ceph-users] Ceph on XenServer

2017-02-26 Thread Bitskrieg 

Massimiliano,

The fact that the core code happens to reside in the kernel has no bearing 
on the overall security posture.  Developers either do a good job of 
isolating guest/host code, or they don't.


As I'm sure you know, xen has had a number of dom0 vm-escape 
vulnerabilities in the past year.  Dom0/domU inherently offers no more 
security than the KVM model.  It's all about implementation.


Chris


On February 26, 2017 6:34:48 AM Massimiliano Cuttini  wrote:


Hi Lindsay,

as far as I know, KVM stand for KERNEL VIRTUAL MACHINES.
When a VM is talking to KVM, in reality it's talking directly to kernel
hypervisor.
There is not any software layering that is running the virtualization
for you.
It's just the kernel.

This means: really high performance (no intermediates) but Kernel
exposed to upstream attacks.


Il 26/02/2017 06:04, Lindsay Mathieson ha scritto:

On 26/02/2017 12:12 AM, Massimiliano Cuttini wrote:

The pity is that is based o KVM, which is as far as I know is a ligth
hypervisor that is not able to isolate the virtual machine properly.
Due to this is possible to frozen the hypervisor kernel from a guest
virtual machine allowing somebody to freeze all your VMs all in once.


Um ... No. KVM/Qemu is fully virtualised.



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Re: [ceph-users] Ceph on XenServer

2017-02-26 Thread Massimiliano Cuttini 

Hi Lindsay,

as far as I know, KVM stand for KERNEL VIRTUAL MACHINES.
When a VM is talking to KVM, in reality it's talking directly to kernel 
hypervisor.
There is not any software layering that is running the virtualization 
for you.

It's just the kernel.

This means: really high performance (no intermediates) but Kernel 
exposed to upstream attacks.



Il 26/02/2017 06:04, Lindsay Mathieson ha scritto:

On 26/02/2017 12:12 AM, Massimiliano Cuttini wrote:
The pity is that is based o KVM, which is as far as I know is a ligth 
hypervisor that is not able to isolate the virtual machine properly.
Due to this is possible to frozen the hypervisor kernel from a guest 
virtual machine allowing somebody to freeze all your VMs all in once.


Um ... No. KVM/Qemu is fully virtualised.



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Re: [ceph-users] Ceph on XenServer

2017-02-25 Thread Lindsay Mathieson 

On 26/02/2017 12:12 AM, Massimiliano Cuttini wrote:
The pity is that is based o KVM, which is as far as I know is a ligth 
hypervisor that is not able to isolate the virtual machine properly.
Due to this is possible to frozen the hypervisor kernel from a guest 
virtual machine allowing somebody to freeze all your VMs all in once.


Um ... No. KVM/Qemu is fully virtualised.

--
Lindsay Mathieson

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Re: [ceph-users] Ceph on XenServer - Using RBDSR

2017-02-25 Thread Michał Chybowski 

Hi Mike,

Have you considered creating SR which doesn't make one huge RBD volume 
and on top of it creates LVM but instead creates separate RBD volumes 
for each VDI?


W dniu 25.02.2017 o 22:14, Mike Jacobacci pisze:

Hi Max,

I have a working Xenserver pool using Ceph RBD as a backend.. I got it 
working by using the RBDSR plugin here:

https://github.com/mstarikov/rbdsr

I don't have much time, but I just wanted to respond in case it's 
helpful... Here is how I got it working:



  On CEPH


  Set tunables to legacy

# ceph osd crush tunables legacy


  Disable chooseleaf_vary_r

# ceph osd getcrushmap -o /tmp/mycrushmap

# crushtool -d /tmp/mycrushmap > /tmp/mycrushmap.txt

chooseleaf_vary_r 0

# crushtool -c /tmp/mycrushmap.txt -o /tmp/mycrushmap.new

# ceph osd setcrushmap -i /tmp/mycrushmap.new


  Create RBD image

# rbd create */pool/*//*image*/ --size *512G* --image-shared


  Remove Deep-flatten feature

# rbd feature disable */pool/*/*/image/* deep-flatten


  On XenServer


(Install the RBDSR plugin on every node)

To Create SR on XenServer

#  modprobe rbd (make sure the are no errors)

# xe sr-create type=lvmoiscsi name-label=/*RBD IMAGE NAME*/ 
shared=true device-config:target=*/CEPH MONITOR IP/* 
device-config:port=6789 device-config:targetIQN=*/RBD POOL NAME/* 
device-config:SCSIid=*/MOUNT NAME/* 
device-config:chapuser=*/CEPHUSER/* 
device-config:chappassword=*/PASSWORD/*



NOTES:

- The GUI option doesn't work, but the above command works every time.

- If you you have more than one XenServer and they are on a Pool, you 
have to run the sr-create command on one node, then the other(s) pool 
members will need to rejoin the Pool for the sr to be shared accross 
the pool.  I couldn't get the mounts working on other pool members of 
an existing pool.



Let me know if you have any questions.


Cheers,
Mike






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--
Regards,
Michał Chybowski

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Re: [ceph-users] Ceph on XenServer - Using RBDSR

2017-02-25 Thread Mike Jacobacci 
Hi Max,

I have a working Xenserver pool using Ceph RBD as a backend.. I got it
working by using the RBDSR plugin here:
https://github.com/mstarikov/rbdsr

I don't have much time, but I just wanted to respond in case it's
helpful... Here is how I got it working:

On CEPH

Set tunables to legacy

# ceph osd crush tunables legacy
Disable chooseleaf_vary_r

# ceph osd getcrushmap -o /tmp/mycrushmap

# crushtool -d /tmp/mycrushmap > /tmp/mycrushmap.txt

chooseleaf_vary_r 0

# crushtool -c /tmp/mycrushmap.txt -o /tmp/mycrushmap.new

# ceph osd setcrushmap -i /tmp/mycrushmap.new
Create RBD image

# rbd create *pool*/*image* --size *512G* --image-shared
Remove Deep-flatten feature

# rbd feature disable *pool*/*image* deep-flatten


On XenServer

(Install the RBDSR plugin on every node)

To Create SR on XenServer

#  modprobe rbd (make sure the are no errors)

# xe sr-create type=lvmoiscsi name-label=*RBD IMAGE NAME* shared=true
device-config:target=*CEPH MONITOR IP* device-config:port=6789
device-config:targetIQN=*RBD POOL NAME* device-config:SCSIid=*MOUNT NAME*
device-config:chapuser=*CEPHUSER* device-config:chappassword=*PASSWORD*


NOTES:

- The GUI option doesn't work, but the above command works every time.

- If you you have more than one XenServer and they are on a Pool, you have
to run the sr-create command on one node, then the other(s) pool members
will need to rejoin the Pool for the sr to be shared accross the pool.  I
couldn't get the mounts working on other pool members of an existing pool.


Let me know if you have any questions.


Cheers,
Mike
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Re: [ceph-users] Ceph on XenServer

2017-02-25 Thread Massimiliano Cuttini 

Hi Brian,

never listen before.
However seems nice and fully featured.

The pity is that is based o KVM, which is as far as I know is a ligth 
hypervisor that is not able to isolate the virtual machine properly.
Due to this is possible to frozen the hypervisor kernel from a guest 
virtual machine allowing somebody to freeze all your VMs all in once.
Xen is completly isolated (of course not as light as KVM). You can 
freeze a VMs but other could not be affected in anyway.

Security should not considered an option.

Thanks anyway,
Max


Il 25/02/2017 14:02, Brian : ha scritto:

Hi Max,

Have you considered Proxmox at all? Nicely integrates with Ceph 
storage. I moved from Xenserver longtime ago and have no regrets.


Thanks
Brians

On Sat, Feb 25, 2017 at 12:47 PM, Massimiliano Cuttini 
> wrote:


Hi Iban,

you are running xen (just the software) not xenserver (ad hoc
linux distribution).
Xenserver is a linux distribution based on CentOS.
You cannot recompile the kernel by your-own (... well, you can do,
but it's not a good idea).
And you should not install rpm by your-own (... but, i'm gonna do
this).

Then I'm stuck with some plugin and just some rpm compatible with
kernel 3.10.0-514.6.1.el7.x86_64
However I found a way to install more or less the Ceph Client.

I have forked the plugin of https://github.com/rposudnevskiy/RBDSR
 It seems the most update.
Here you can find my findings and updates:
https://github.com/phoenixweb/RBDSR

However at the moment I'm stuck with a kernel unsupported feature. :(
Let's see if I can let this work.

Thanks for your sharings
Max





Il 24/02/2017 18:46, Iban Cabrillo ha scritto:

Hi Massimiliano,
  We are running CEPH agains our openstack instance running Xen:

ii  xen-hypervisor-4.6-amd64 4.6.0-1ubuntu4.3  
 amd64  Xen Hypervisor on AMD64

ii  xen-system-amd64 4.6.0-1ubuntu4.1amd64
 Xen System on AMD64 (meta-package)
ii  xen-utils-4.6  4.6.0-1ubuntu4.3amd64  XEN
administrative tools
ii  xen-utils-common 4.6.0-1ubuntu4.3all  Xen
administrative tools - common files
ii  xenstore-utils 4.6.0-1ubuntu4.1amd64
 Xenstore command line utilities for Xen


2017-02-24 15:52 GMT+01:00 Massimiliano Cuttini
>:

Dear all,

even if Ceph should be officially supported by Xen since 4 years.

  * 
http://xenserver.org/blog/entry/tech-preview-of-xenserver-libvirt-ceph.html


  * https://ceph.com/geen-categorie/xenserver-support-for-rbd/


rbd is supported on libvirt 1.3.2, but It has to be recompiled the

ii  libvirt-bin 1.3.2-0~15.10~ amd64  programs for the
libvirt library
ii  libvirt0:amd64   1.3.2-0~15.10~ amd64library
for interfacing with different virtualization systems

Still there is no support yet.

At this point there are only some self-made plugin and
solution around.
Here some:

  * https://github.com/rposudnevskiy/RBDSR

  * https://github.com/mstarikov/rbdsr

  * https://github.com/FlorianHeigl/xen-ceph-rbd


Nobody know how much they are compatible or if they are gonna
to break Xen the next update.

The ugly truth is that XEN is not still able to fully support
Ceph and we can only pray that one of the plugin above will
not destroy our precious data or VDI.

Does anybody had some experience with the plugin above?
Which one you'll reccomend?
Is there any good installation guide to let this work correctly?
Can I just install Ceph with ceph-deploy or do I have to
unlock repos on the xenserver and instal it manuall, Thanks
for any kind of support.

Attaching volumes from openstack portal (or using cinder volume
manager), has been working fine since 6 months ago, but I do not
know what will happen on next updates


Regards,
Max



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Re: [ceph-users] Ceph on XenServer

2017-02-25 Thread Brian : 
Hi Max,

Have you considered Proxmox at all? Nicely integrates with Ceph storage. I
moved from Xenserver longtime ago and have no regrets.

Thanks
Brians

On Sat, Feb 25, 2017 at 12:47 PM, Massimiliano Cuttini 
wrote:

> Hi Iban,
>
> you are running xen (just the software) not xenserver (ad hoc linux
> distribution).
> Xenserver is a linux distribution based on CentOS.
> You cannot recompile the kernel by your-own (... well, you can do, but
> it's not a good idea).
> And you should not install rpm by your-own (... but, i'm gonna do this).
>
> Then I'm stuck with some plugin and just some rpm compatible with kernel
> 3.10.0-514.6.1.el7.x86_64
> However I found a way to install more or less the Ceph Client.
> I have forked the plugin of https://github.com/rposudnevskiy/RBDSR It
> seems the most update.
> Here you can find my findings and updates: https://github.com/phoenixweb/
> RBDSR
> However at the moment I'm stuck with a kernel unsupported feature. :(
> Let's see if I can let this work.
>
> Thanks for your sharings
> Max
>
>
>
>
>
> Il 24/02/2017 18:46, Iban Cabrillo ha scritto:
>
> Hi Massimiliano,
>   We are running CEPH agains our openstack instance running Xen:
>
> ii  xen-hypervisor-4.6-amd64 4.6.0-1ubuntu4.3
>amd64Xen Hypervisor on AMD64
> ii  xen-system-amd64 4.6.0-1ubuntu4.1
>amd64Xen System on AMD64 (meta-package)
> ii  xen-utils-4.64.6.0-1ubuntu4.3
>amd64XEN administrative tools
> ii  xen-utils-common 4.6.0-1ubuntu4.3
>all  Xen administrative tools - common files
> ii  xenstore-utils   4.6.0-1ubuntu4.1
>amd64Xenstore command line utilities for Xen
>
>
> 2017-02-24 15:52 GMT+01:00 Massimiliano Cuttini :
>
>> Dear all,
>>
>> even if Ceph should be officially supported by Xen since 4 years.
>>
>>- http://xenserver.org/blog/entry/tech-preview-of-xenserver-
>>libvirt-ceph.html
>>- https://ceph.com/geen-categorie/xenserver-support-for-rbd/
>>
>> rbd is supported on libvirt 1.3.2, but It has to be recompiled the
>
> ii  libvirt-bin   1.3.2-0~15.10~ amd64programs for
> the libvirt library
> ii  libvirt0:amd64   1.3.2-0~15.10~ amd64library for
> interfacing with different virtualization systems
>
>>
>>
>> Still there is no support yet.
>>
>> At this point there are only some self-made plugin and solution around.
>> Here some:
>>
>>- https://github.com/rposudnevskiy/RBDSR
>>- https://github.com/mstarikov/rbdsr
>>- https://github.com/FlorianHeigl/xen-ceph-rbd
>>
>> Nobody know how much they are compatible or if they are gonna to break
>> Xen the next update.
>>
>> The ugly truth is that XEN is not still able to fully support Ceph and we
>> can only pray that one of the plugin above will not destroy our precious
>> data or VDI.
>>
>> Does anybody had some experience with the plugin above?
>> Which one you'll reccomend?
>> Is there any good installation guide to let this work correctly?
>> Can I just install Ceph with ceph-deploy or do I have to unlock repos on
>> the xenserver and instal it manuall, Thanks for any kind of support.
>>
> Attaching volumes from openstack portal (or using cinder volume manager),
> has been working fine since 6 months ago, but I do not know what will
> happen on next updates
>
>
> Regards,
>> Max
>>
>>
>>
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>>
>
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Re: [ceph-users] Ceph on XenServer

2017-02-25 Thread Massimiliano Cuttini 

Hi Andrei,

i don't think so.
The future way to support Ceph in Xencenter is the kernel.

Xencenter is based on  centOS, and centOS is the downstream of RHE.
This means that some day in the future the kernel of RHE will be already 
compiled to completly support RADOS.

At that time having ceph working will be easy as having NFS working.

Xen is just the software and work already with CEPH if you setup a 
server by yourself with some linux distribution.

XenServer is the adhoc Linux distribution, with a kernel personalized.
Which makes install 3rd parts componets harder.

The fact that is based on CentOS is why more-or-less you can let this work.
However nobody know why should be as painfull as this.
Ceph is already well supported by all the  main Linux distribution.
In xenserver it seems that they just forgot to includes some RPMs and 
don't want to let you use it.
(while 4 years ago claimed that they are goona to support it in the near 
future).


This is so bad.

Andrei, are you using Ceph at the moment?




Il 24/02/2017 18:17, Andrei Mikhailovsky ha scritto:

Hi Max,

I've played around with ceph on xenserver about 2-3 years ago. I made 
it work, but it was all hackish and a lot of manual work. It didn't 
play well with the cloud orchestrator and I gave up hoping that either 
Citrix or Ceph team would make it work. Currently, I would not 
recommend using it in production. There was very little done since and 
I am not sure if it is even safe to use it on the current versions of 
ceph. You should be able to run nfs over ceph and use ceph this way, 
but I am not sure how well it would perform.


Taking into account that ceph has been converted into the redhat 
house, I doubt that they will play nicely with xenserver. Please 
correct my way of thinking, but my guess is that from RH point of view 
all the efforts would go to make ceph work well in kvm environment and 
forget about other hypervisors. From the xenserver point of view, I 
doubt people will be taking it seriously until ceph proves itself to 
be rock solid, or have commercial development backing, which so far, 
doesn't seem like the case. Just reading about issues with ceph during 
install, updates, usage, etc. on this thread tells me that ceph is 
still rough and needs to be polished.


Andrei



*From: *"Massimiliano Cuttini" <m...@phoenixweb.it>
*To: *"ceph-users" <ceph-users@lists.ceph.com>
*Sent: *Friday, 24 February, 2017 14:52:37
*Subject: *[ceph-users] Ceph on XenServer

Dear all,

even if Ceph should be officially supported by Xen since 4 years.

  * 
http://xenserver.org/blog/entry/tech-preview-of-xenserver-libvirt-ceph.html
  * https://ceph.com/geen-categorie/xenserver-support-for-rbd/

Still there is no support yet.

At this point there are only some self-made plugin and solution
around.
Here some:

  * https://github.com/rposudnevskiy/RBDSR
  * https://github.com/mstarikov/rbdsr
  * https://github.com/FlorianHeigl/xen-ceph-rbd

Nobody know how much they are compatible or if they are gonna to
break Xen the next update.

The ugly truth is that XEN is not still able to fully support Ceph
and we can only pray that one of the plugin above will not destroy
our precious data or VDI.

Does anybody had some experience with the plugin above?
Which one you'll reccomend?
Is there any good installation guide to let this work correctly?
Can I just install Ceph with ceph-deploy or do I have to unlock
repos on the xenserver and instal it manually?

Thanks for any kind of support.

Regards,
Max



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Re: [ceph-users] Ceph on XenServer

2017-02-25 Thread Massimiliano Cuttini 

Hi Iban,

you are running xen (just the software) not xenserver (ad hoc linux 
distribution).

Xenserver is a linux distribution based on CentOS.
You cannot recompile the kernel by your-own (... well, you can do, but 
it's not a good idea).

And you should not install rpm by your-own (... but, i'm gonna do this).

Then I'm stuck with some plugin and just some rpm compatible with kernel 
3.10.0-514.6.1.el7.x86_64

However I found a way to install more or less the Ceph Client.

I have forked the plugin of https://github.com/rposudnevskiy/RBDSR 
 It seems the most update.
Here you can find my findings and updates: 
https://github.com/phoenixweb/RBDSR

However at the moment I'm stuck with a kernel unsupported feature. :(
Let's see if I can let this work.

Thanks for your sharings
Max




Il 24/02/2017 18:46, Iban Cabrillo ha scritto:

Hi Massimiliano,
  We are running CEPH agains our openstack instance running Xen:

ii  xen-hypervisor-4.6-amd64 4.6.0-1ubuntu4.3 
 amd64Xen Hypervisor on AMD64
ii  xen-system-amd64 4.6.0-1ubuntu4.1 
 amd64Xen System on AMD64 (meta-package)
ii  xen-utils-4.64.6.0-1ubuntu4.3 
 amd64XEN administrative tools
ii  xen-utils-common 4.6.0-1ubuntu4.3 
 all  Xen administrative tools - common files
ii  xenstore-utils   4.6.0-1ubuntu4.1 
 amd64Xenstore command line utilities for Xen



2017-02-24 15:52 GMT+01:00 Massimiliano Cuttini >:


Dear all,

even if Ceph should be officially supported by Xen since 4 years.

  * 
http://xenserver.org/blog/entry/tech-preview-of-xenserver-libvirt-ceph.html


  * https://ceph.com/geen-categorie/xenserver-support-for-rbd/


rbd is supported on libvirt 1.3.2, but It has to be recompiled the

ii  libvirt-bin   1.3.2-0~15.10~ amd64programs for 
the libvirt library
ii  libvirt0:amd64   1.3.2-0~15.10~ amd64library for 
interfacing with different virtualization systems


Still there is no support yet.

At this point there are only some self-made plugin and solution
around.
Here some:

  * https://github.com/rposudnevskiy/RBDSR

  * https://github.com/mstarikov/rbdsr

  * https://github.com/FlorianHeigl/xen-ceph-rbd


Nobody know how much they are compatible or if they are gonna to
break Xen the next update.

The ugly truth is that XEN is not still able to fully support Ceph
and we can only pray that one of the plugin above will not destroy
our precious data or VDI.

Does anybody had some experience with the plugin above?
Which one you'll reccomend?
Is there any good installation guide to let this work correctly?
Can I just install Ceph with ceph-deploy or do I have to unlock
repos on the xenserver and instal it manuall, Thanks for any kind
of support.

Attaching volumes from openstack portal (or using cinder volume 
manager), has been working fine since 6 months ago, but I do not know 
what will happen on next updates



Regards,
Max



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Re: [ceph-users] Ceph on XenServer

2017-02-24 Thread Iban Cabrillo 
Hi Massimiliano,
  We are running CEPH agains our openstack instance running Xen:

ii  xen-hypervisor-4.6-amd64 4.6.0-1ubuntu4.3
 amd64Xen Hypervisor on AMD64
ii  xen-system-amd64 4.6.0-1ubuntu4.1
 amd64Xen System on AMD64 (meta-package)
ii  xen-utils-4.64.6.0-1ubuntu4.3
 amd64XEN administrative tools
ii  xen-utils-common 4.6.0-1ubuntu4.3
 all  Xen administrative tools - common files
ii  xenstore-utils   4.6.0-1ubuntu4.1
 amd64Xenstore command line utilities for Xen


2017-02-24 15:52 GMT+01:00 Massimiliano Cuttini :

> Dear all,
>
> even if Ceph should be officially supported by Xen since 4 years.
>
>- http://xenserver.org/blog/entry/tech-preview-of-
>xenserver-libvirt-ceph.html
>- https://ceph.com/geen-categorie/xenserver-support-for-rbd/
>
> rbd is supported on libvirt 1.3.2, but It has to be recompiled the

ii  libvirt-bin   1.3.2-0~15.10~ amd64programs for
the libvirt library
ii  libvirt0:amd64   1.3.2-0~15.10~ amd64library for
interfacing with different virtualization systems

>
>
> Still there is no support yet.
>
> At this point there are only some self-made plugin and solution around.
> Here some:
>
>- https://github.com/rposudnevskiy/RBDSR
>- https://github.com/mstarikov/rbdsr
>- https://github.com/FlorianHeigl/xen-ceph-rbd
>
> Nobody know how much they are compatible or if they are gonna to break Xen
> the next update.
>
> The ugly truth is that XEN is not still able to fully support Ceph and we
> can only pray that one of the plugin above will not destroy our precious
> data or VDI.
>
> Does anybody had some experience with the plugin above?
> Which one you'll reccomend?
> Is there any good installation guide to let this work correctly?
> Can I just install Ceph with ceph-deploy or do I have to unlock repos on
> the xenserver and instal it manuall, Thanks for any kind of support.
>
Attaching volumes from openstack portal (or using cinder volume manager),
has been working fine since 6 months ago, but I do not know what will
happen on next updates


Regards,
> Max
>
>
>
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>


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Instituto de Fisica de Cantabria (IFCA)
Santander, Spain
Tel: +34942200969
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Re: [ceph-users] Ceph on XenServer

2017-02-24 Thread Andrei Mikhailovsky 
Hi Max, 

I've played around with ceph on xenserver about 2-3 years ago. I made it work, 
but it was all hackish and a lot of manual work. It didn't play well with the 
cloud orchestrator and I gave up hoping that either Citrix or Ceph team would 
make it work. Currently, I would not recommend using it in production. There 
was very little done since and I am not sure if it is even safe to use it on 
the current versions of ceph. You should be able to run nfs over ceph and use 
ceph this way, but I am not sure how well it would perform. 

Taking into account that ceph has been converted into the redhat house, I doubt 
that they will play nicely with xenserver. Please correct my way of thinking, 
but my guess is that from RH point of view all the efforts would go to make 
ceph work well in kvm environment and forget about other hypervisors. From the 
xenserver point of view, I doubt people will be taking it seriously until ceph 
proves itself to be rock solid, or have commercial development backing, which 
so far, doesn't seem like the case. Just reading about issues with ceph during 
install, updates, usage, etc. on this thread tells me that ceph is still rough 
and needs to be polished. 

Andrei 

> From: "Massimiliano Cuttini" <m...@phoenixweb.it>
> To: "ceph-users" <ceph-users@lists.ceph.com>
> Sent: Friday, 24 February, 2017 14:52:37
> Subject: [ceph-users] Ceph on XenServer

> Dear all,

> even if Ceph should be officially supported by Xen since 4 years.

> * 
> http://xenserver.org/blog/entry/tech-preview-of-xenserver-libvirt-ceph.html
> * https://ceph.com/geen-categorie/xenserver-support-for-rbd/

> Still there is no support yet.

> At this point there are only some self-made plugin and solution around.
> Here some:

> * https://github.com/rposudnevskiy/RBDSR
> * https://github.com/mstarikov/rbdsr
> * https://github.com/FlorianHeigl/xen-ceph-rbd

> Nobody know how much they are compatible or if they are gonna to break Xen the
> next update.

> The ugly truth is that XEN is not still able to fully support Ceph and we can
> only pray that one of the plugin above will not destroy our precious data or
> VDI.

> Does anybody had some experience with the plugin above?
> Which one you'll reccomend?
> Is there any good installation guide to let this work correctly?
> Can I just install Ceph with ceph-deploy or do I have to unlock repos on the
> xenserver and instal it manually?

> Thanks for any kind of support.

> Regards,
> Max

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[ceph-users] Ceph on XenServer

2017-02-24 Thread Massimiliano Cuttini 

Dear all,

even if Ceph should be officially supported by Xen since 4 years.

 * http://xenserver.org/blog/entry/tech-preview-of-xenserver-libvirt-ceph.html
 * https://ceph.com/geen-categorie/xenserver-support-for-rbd/

Still there is no support yet.

At this point there are only some self-made plugin and solution around.
Here some:

 * https://github.com/rposudnevskiy/RBDSR
 * https://github.com/mstarikov/rbdsr
 * https://github.com/FlorianHeigl/xen-ceph-rbd

Nobody know how much they are compatible or if they are gonna to break 
Xen the next update.


The ugly truth is that XEN is not still able to fully support Ceph and 
we can only pray that one of the plugin above will not destroy our 
precious data or VDI.


Does anybody had some experience with the plugin above?
Which one you'll reccomend?
Is there any good installation guide to let this work correctly?
Can I just install Ceph with ceph-deploy or do I have to unlock repos on 
the xenserver and instal it manually?


Thanks for any kind of support.

Regards,
Max


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