ZFS: Create a snapshot of a filesystem (tech-recipes)

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01-21-2010

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ZFS: Create a snapshot of a filesystem (tech-recipes)

Of the many cool features of the ZFS filesystems, one of the coolest is taking snapshots of a live filesystem. This provides a read-only point-in-time copy of the whole filesystem. While this sounds slow and expensive in disk usage, ZFS makes snapshots efficient in time and space.

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filesystem

filesystem(7)						 Miscellaneous Information Manual					     filesystem(7)

NAME

       filesystem - event signalling that filesystems have been mounted

SYNOPSIS

       filesystem [ENV]...

DESCRIPTION

       The  filesystem	event  is  generated by the mountall(8) daemon after it has mounted all filesystems listed in fstab(5).  mountall(8) emits
       this event as an informational signal, services and tasks started or stopped by this event will do so in parallel with other activity.

EXAMPLE

       A service that wishes to be running once filesystems are mounted might use:

	      start on filesystem

SEE ALSO

       mounting(7) mounted(7) virtual-filesystems(7) local-filesystems(7) remote-filesystems(7) all-swaps(7)

mountall							    2009-12-21							     filesystem(7)