[one-users] How to use ceph filesystem

[Kenneth]

Actually, I'm using ceph as the system datastore. I used the cephfs
(CEPH FUSE) and mounted it on all nodes on /var/lib/one/datastores/0/


Regarding ssh for trasfer driver, I haven't really used it since I'm
all on ceph, both system and image datastore. I may be wrong but that is
how I understand it from the docs. 
---

Thanks,
Kenneth
Apollo Global
Corp.

On 12/03/2013 06:11 PM, Mario Giammarco wrote: 

> My problem was
that because ceph is a distributed filesystem (and so it can be used as
an alternative to nfs) I supposed I can use as a shared system
datastore. Reading your reply I can see it is not true. Probably
official documentation should clarify this.
> 
> Infact I hoped to use
ceph as system datastore because ceph is fault tolerant and nfs is
not.
> 
> Thanks for help, Mario 
> 
> 2013/12/3 Kenneth
<kenneth at apolloglobal.net>
> 
>> Ceph won't be the default image
datastore, but you can always choose it whenever you create an image.

>> 
>> You said you don't have an NFS disk and your just use plain disk
on your system datastore so you SHOULD use ssh in order to have live
migrations. 
>> 
>> Mine uses shared as datastore since I mounted a
shared folder on each nebula node. 
>> 
>> ---
>> 
>> Thanks,
>>
Kenneth
>> Apollo Global Corp.
>> 
>> On 12/03/2013 03:01 PM, Mario
Giammarco wrote: 
>> 
>>> First, thanks you for your very detailed
reply!
>>> 
>>> 2013/12/3 Kenneth <kenneth at apolloglobal.net>
>>> 
>>>>
You don't need to replace existing datastores, the important is you edit
the system datastore as "ssh" because you still need to transfer files
in each node when you deploy a VM.
>>> 
>>> So I lose live migration,
right? 
>>> If I understand correctly ceph cannot be default datastore
also. 
>>> 
>>>> Next, you should make sure that all your node are able
to communicate with the ceph cluster. Issue the command "ceph -s" on all
nodes including the front end to be sure that they are connected to
ceph.
>>> 
>>> ... will check... 
>>> 
>>> oneadmin at cloud-node1:~$
onedatastore list
 
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