[ovirt-users] [STORAGE] Adding posix compliant FS

[Julian De Marchi]

On 12/21/14 06:59, Nir Soffer wrote:
> ----- Original Message -----
>> From: "Julian De Marchi" <julian at jdcomputers.com.au>
>> To: "Vered Volansky" <vered at redhat.com>
>> Cc: users at ovirt.org
>> Sent: Wednesday, December 17, 2014 4:29:36 PM
>> Subject: Re: [ovirt-users] [STORAGE] Adding posix compliant FS
>>
>> On 17/12/14 21:38, Vered Volansky wrote:
>>> Hi Julian,
>>
>> Hey Vered,
>>
>>> IIUC the you have a self-created lvm, to which you're trying to connect as
>>> posix using ovirt.
>>> If that's the case please try to manually change the device's permissions
>>> to 36:36 under /dev/<your_VG>.
>>> If that doesn't work try the actual device it's mapped to (which is what
>>> vdsm actually tries to mount).
>>> If that also doesn't work please send us the output of:
>>>>> ls -lh /dev/<your_VG> .
>>
>> Still failed mate after a chmod 36:36. The thing is though, it _does_
>> mount the device for a moment before failing and unmounting it...
>>
>> [root at blade01 ~]# ls /dev/VolGroup/lv_images -lh
>> lrwxrwxrwx 1 root root 7 Dec 15 16:52 /dev/VolGroup/lv_images -> ../dm-2
>> [root at blade01 ~]# ls /dev/dm-2 -lh
>> brw-rw---- 1 vdsm kvm 253, 2 Dec 15 16:52 /dev/dm-2
>
> Hi Julian,

Hey Nir,

> It is not clear what are you trying to do - is this lv on shared storage, and accessed
> by multiple hosts or use only one host?

It's a local LVM mount.

> If the lv is shared, you cannot create a file system and mount it on multiple hosts (unless you
> are using cluster file system).
>
> If this local storage for one host, you should create a file system and mount it, and then
> you can use the mountpoint as local storage.

If I proceed this way then the ovirt node needs to be in it's own local 
cluster, correct?

> Please describe in details what are you trying to do and how did you create the storage
> domain in the engine side.

I first did a default centos install which created the LVM stuff. I then 
lvrename the home LV to images LV.

My end goal is to use the posix compliant mount option to have each of 
my ovirt nodes the option to use local storage for VMs for which I'm not 
fussed if they can migrate between the cluster or not.

Does this make more sense?

--julian