[Users] Question on configuring local storage on oVirt Node

[Mike Burns]

On Thu, 2012-03-22 at 15:43 -0400, Hans Lellelid wrote:
>         > I'm probably missing something, but it's unclear to me how
>         to create
>         > this local storage mountpoint on that host.  (I don't see
>         anything in
>         > the Node TUI.)  I tried simply specifying "/data/images" in
>         the hopes
>         > that it was automatically created, but the Admin console
>         just spun
>         > indefinitely (eventually refreshing the page revealed that
>         the store
>         > was note created).
>         >
>         >
>         > I'm currently rebuilding that Node as a F16+VDSM box instead
>         -- so I
>         > can get in there and set this up manually (is there a way to
>         get into
>         > schell on oVirt Nodes and mess with the [F16-based?] OS?)
>         
>         
>         You can drop to the shell using F2 and create the directory
>         that way.
>         
> 
> 
> Thanks, that's really helpful.  I'm sure it was mentioned somewhere,
> but I was trying different consoles with "root" etc. and unsure on how
> to get to the terminal.
>  
>         IMO, since we restrict the location you can create a local
>         data store,
>         we should automatically create that when configuring the local
>         datastore.
>         
>         We can't actually pre-create the directory since it's a
>         mounted
>         filesystem, but it might be possible to do it at installation
>         or boot
>         time.  The right place is in vdsm when it's trying to create
>         the local
>         data store.
>         
> 
> 
> So, after initially attempting to just "create" the directory and
> being told it was a read-only filesystem, I did a little more
> investigation and realized that the "Data" volume (in /dev/HostVG) was
> simply not mounted.  I mounted this with the command:
> 
> 
> mount /dev/HostVG/Data /data
> 
> 
> And now I have a /data/images directory (as well as /data/core).  I'm
> not entirely sure why this wasn't mounted since I see it
> in /etc/fstab.  In fact, when I discovered it was in /etc/fstab, I
> tried just
> 
> 
> mount /data
> 
> 
> And that also worked just fine.  So puzzled that thsi was not mounted
> when the system booted up.  Maybe I missed an error message, but dmesg
> isn't saying anything obvious (not sure if that's where I'd see mount
> errors or not).  Maybe this is a known issue.

I had heard this from a couple people previously, but it always seemed
to present as a one off problem.  We've managed to reproduce it
consistently, so it seems that it's a legitimate problem that we need to
fix.

Thanks

Mike
> 
> 
> Thanks again for the help -- this definitely got me moving in the
> right direction.  Hopefully I'm moments away from being able to get
> that first VM running.
> 
> 
> Thanks,
> Hans