On 2010-Nov-23 23:45:43 +1100, Andrew Reilly <arei...@bigpond.net.au> wrote: >zfs send -vR tank/h...@0 | zfs receive -d /backup/snapshots > >in order to experiment with this strategy. > >One would then become alarmed when one discovered that the >receive mechanism also invoked the mountpoint= parameter of the >source filesystem, and the zfs propensity for just doing stuff, >and boom: you have a read-only version of your home directory >mounted *on top of* your actual home directory...
Been there, done that. The undocumented '-u' option to receive will prevent the receive side performing mounts. The poorly documented '-R' option on import allows you to specify an alternative root mountpoint. Once you have done the initial transfer, you can also set 'canmount=noauto' on each fileset (it isn't inherited) to prevent ZFS automounting them on import. BTW, the entire export is performed at the current compression level - recompressing existing data. -- Peter Jeremy
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