zfs discuss - Sep 2010 - Unwanted filesystem mounting when using send/recv

I am looking at backing up my fileserver by replicating the
filesystems onto an external disk using send/recv with something
similar to:
  zfs send ... mypool at snapshot | zfs recv -d backup
but have run into a bit of a gotcha with the mountpoint property:
- If I use "zfs send -R ..." then the mountpoint gets replicated and
  the backup gets mounted over the top of my real filesystems.
- If I skip the ''-R'' then none of the properties get backed
up.

Is there some way to have zfs recv not automatically mount filesystems
when it creates them?

-- 
Peter Jeremy
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On 09/15/10 12:56 PM, Peter Jeremy wrote:
> I am looking at backing up my fileserver by replicating the
> filesystems onto an external disk using send/recv with something
> similar to:
>    zfs send ... mypool at snapshot | zfs recv -d backup
> but have run into a bit of a gotcha with the mountpoint property:
> - If I use "zfs send -R ..." then the mountpoint gets replicated
and
>    the backup gets mounted over the top of my real filesystems.
> - If I skip the ''-R'' then none of the properties get
backed up.
>
> Is there some way to have zfs recv not automatically mount filesystems
> when it creates them?
>
>    
Use -u with zfs receive.

-- 
Ian.

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On 2010/09/14 17:56, Peter Jeremy wrote:
> I am looking at backing up my fileserver by replicating the
> filesystems onto an external disk using send/recv with something
> similar to:
>   zfs send ... mypool at snapshot | zfs recv -d backup
> but have run into a bit of a gotcha with the mountpoint property:
> - If I use "zfs send -R ..." then the mountpoint gets replicated
and
>   the backup gets mounted over the top of my real filesystems.
> - If I skip the ''-R'' then none of the properties get
backed up.
> 
> Is there some way to have zfs recv not automatically mount filesystems
> when it creates them?
zfs receive have a ''-u'' option to specify that no mount should
be done.

By the way it might be a good idea not to specify mountpoint at the
sending site, which makes replication easier (one way is to have the
topmost layer mountpoint=/ but canmount=off).

Cheers,
- -- 
Xin LI <delphij at delphij.net>	http://www.delphij.net/
FreeBSD - The Power to Serve!	       Live free or die
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