[lxc-users] Mount Directory or Move Image Location?

[B G]

Thanks I will try your later suggestion... Thank you for your quick replies.

That said your earlier suggestion seems to have also worked...

mount --bind /container/rootfs/fastdata1 /nvme/fastdata1

I tried the following and it seems to work..  Was thinking about adding
into fstab for perminence..

Which way do you recommend?  I can switch to the lxc config way...

Each machine is a single-tenant environment so not so worried about
security isolation of each container.



On Fri, Oct 30, 2015 at 3:14 PM, Serge Hallyn <serge.hallyn at ubuntu.com>
wrote:

> No, wait.  I thought you wanted the other directory to be where the
> containers are coming from.
>
> To bind mount the directory into containers, use a 'disk' device
> type.  I.e. if the directory is mounted on the host at /mnt/fastdisk,
> and your container is container-name,
>
> lxc config device add container-name fastdisk disk source=/mnt/fastdisk
> path=/opt
>
> Will cause 'fastdisk' to be mounted under /opt in the container.
>
> -serge
>
> Quoting B G (bg85305 at gmail.com):
> > Thanks Serge.
> >
> > You suggest to bind mount the underlying directory from the host OS?
> >
> > I suppose that we could do that for the root file system anywhere inside
> > the image file system?
> >
> > E.g.
> >
> > /var/lib/lxd/containers/container-name/rootfs/directory_mount
> >
> > Once I restart the container should be transparent to the container that
> > the underlying file-system has mounted from a different location?
> >
> > That sound right... I was thinking about it in a much more complicated
> way
> > like you would a VDI for a VM.  That is better.
> >
> >
> >
> > On Fri, Oct 30, 2015 at 2:23 PM, Serge Hallyn <serge.hallyn at ubuntu.com>
> > wrote:
> >
> > > Quoting B G (bg85305 at gmail.com):
> > > > I need to jam a ton of data from another drive partition into a
> > > > container... What is the best way to:
> > > >
> > > > 1. Mount a directory from a different drive on the host
> > > >
> > > > or
> > > >
> > > > 2. Change the image location to the alternative drive on the host
> > > >
> > > > I have been searching a ton and can't see the best way to do this.  I
> > > have
> > > > an NVME partition that I want to use for really fast IO but it is
> not the
> > > > default one the containers are created in...
> > > >
> > > > Appreciate any advice..
> > >
> > > Are you using lxd or lxc?
> > >
> > > The easiest way is probably to just bind mount the fast directory onto
> > > /var/lib/lxc or /var/lib/lxd.  If I'm understanding you right.
> > >
> > > Personally on my laptop I have a little 16G m.2 ssd formatted as btrfs
> > > and mounted onto /var/lib/lxd to give me something like .5-second
> container
> > > creations.
> > >
> > > -serge
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>
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