Re: [pve-devel] Maximum Bind-Mounts

[Nils Privat]

Thanks, i test it and it worked for me, although to be able to see all
mounts in the GUI, we probably have to change more than one line.

2018-01-23 10:55 GMT+01:00 Andreas Steinel :

> After a discussion on the forums [1], @fabian suggested to reopen this one.
>
> What is the current way to import a whole ZFS tree into a container? My
> solution was to have more bind mount devices and manually add each one of
> the, stupid, but easy to implement.
>
> [1]
> https://forum.proxmox.com/threads/lxc-more-than-10-
> mount-points-possible.40213/
> ___
> pve-devel mailing list
> pve-devel@pve.proxmox.com
> https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
>
___
pve-devel mailing list
pve-devel@pve.proxmox.com
https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel

Re: [pve-devel] Maximum Bind-Mounts

[Andreas Steinel]

After a discussion on the forums [1], @fabian suggested to reopen this one.

What is the current way to import a whole ZFS tree into a container? My
solution was to have more bind mount devices and manually add each one of
the, stupid, but easy to implement.

[1]
https://forum.proxmox.com/threads/lxc-more-than-10-mount-points-possible.40213/
___
pve-devel mailing list
pve-devel@pve.proxmox.com
https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel

Re: [pve-devel] Maximum Bind-Mounts

[Andreas Steinel]

On Wed, May 18, 2016 at 5:42 AM, Dietmar Maurer  wrote:

> Not sure, but maybe http://bindfs.org/ can help here?
>

Could be, but fuse is not known for its speed. I'll stick with the normal
bind mounts.
___
pve-devel mailing list
pve-devel@pve.proxmox.com
http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel

Re: [pve-devel] Maximum Bind-Mounts

[Dietmar Maurer]

> On May 18, 2016 at 12:10 AM Andreas Steinel  wrote:
> 
> 
> On Tue, May 17, 2016 at 3:47 PM, Dietmar Maurer  wrote:
> 
> > > Because ZFS filesystems are cheap and should be used everywhere ... at
> > > least as I have read.
> >
> > But such setup it is really clumsy for container as long
> > as there is no recursive bind mount.
> >
> 
> Unfortunately, that's right. Therefore, I increased the mount limit.

Not sure, but maybe http://bindfs.org/ can help here?

___
pve-devel mailing list
pve-devel@pve.proxmox.com
http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel

Re: [pve-devel] Maximum Bind-Mounts

[Andreas Steinel]

On Tue, May 17, 2016 at 3:47 PM, Dietmar Maurer  wrote:

> > Because ZFS filesystems are cheap and should be used everywhere ... at
> > least as I have read.
>
> But such setup it is really clumsy for container as long
> as there is no recursive bind mount.
>

Unfortunately, that's right. Therefore, I increased the mount limit.

A bind mount should be more lightweight than a normal mount and I ran on
several occasions in the loopback mount limit of 1024 in former kernel
version. I never noticed any slowness.
___
pve-devel mailing list
pve-devel@pve.proxmox.com
http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel

Re: [pve-devel] Maximum Bind-Mounts

[Dietmar Maurer]

> Because ZFS filesystems are cheap and should be used everywhere ... at
> least as I have read.

But such setup it is really clumsy for container as long 
as there is no recursive bind mount.

___
pve-devel mailing list
pve-devel@pve.proxmox.com
http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel

Re: [pve-devel] Maximum Bind-Mounts

[Andreas Steinel]

On Sun, May 15, 2016 at 11:48 AM, Dietmar Maurer 
wrote:

> > I have a filesystem called images with child filesystems of each year
> going
> > back to the 80s.
>
> And what is the purpose of such setup? Wouldn't it be simpler to merge
> those old child file systems into a single one?
>

Because ZFS filesystems are cheap and should be used everywhere ... at
least as I have read.

One simple thing would be rollback. If everything is on one system, this
will be very tricky.
___
pve-devel mailing list
pve-devel@pve.proxmox.com
http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel

Re: [pve-devel] Maximum Bind-Mounts

[Dietmar Maurer]

> I have a filesystem called images with child filesystems of each year going
> back to the 80s.

And what is the purpose of such setup? Wouldn't it be simpler to merge
those old child file systems into a single one?

___
pve-devel mailing list
pve-devel@pve.proxmox.com
http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel

Re: [pve-devel] Maximum Bind-Mounts

[Andreas Steinel]

Hi Dietmar,

On Sun, May 15, 2016 at 7:19 AM, Dietmar Maurer  wrote:
>
> > I needed more (bind of ZFS filesystem with a lot of children) so I
> > increased the maximum in /usr/share/perl5/PVE/LXC/Config.pm and it worked
> > fine.
>
> Would you mind to explain why you need more that 10 mounts? How many
> do you need exactly?
>

I have a filesystem called images with child filesystems of each year going
back to the 80s. So, there quite a few filesystems that have to be
bind-mounted inside the container. Due to the filesystem boundaries, the
bind-mount of the parent filesystem does not propagate the children
filesystem inside the container.

And yes, I can do it via network, but I do not need additional layers of
unwanted complexity and slowness.
___
pve-devel mailing list
pve-devel@pve.proxmox.com
http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel

Re: [pve-devel] Maximum Bind-Mounts

[Dietmar Maurer]

> is there a reason for a the maximum of 10 bind mounts for lxc?

mounting is slow and clumsy to handle, for example with snapshot backups ...

> I needed more (bind of ZFS filesystem with a lot of children) so I
> increased the maximum in /usr/share/perl5/PVE/LXC/Config.pm and it worked
> fine.

Would you mind to explain why you need more that 10 mounts? How many
do you need exactly?

___
pve-devel mailing list
pve-devel@pve.proxmox.com
http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel