mksnap_ffs man page on FreeBSD

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MKSNAP_FFS(8)		  BSD System Manager's Manual		 MKSNAP_FFS(8)

NAME
     mksnap_ffs — take a file system snapshot

SYNOPSIS
     mksnap_ffs snapshot_name

DESCRIPTION
     The mksnap_ffs utility creates a snapshot named snapshot_name.

     The group ownership of the file is set to “operator”; the owner of the
     file remains “root”.  The mode of the snapshot is set to be readable by
     the owner or members of the “operator” group.

EXAMPLES
     Create a snapshot of /usr/home file system and mount the snapshot else‐
     where:

	   mksnap_ffs /usr/home/snapshot
	   mdconfig -a -t vnode -o readonly -f /usr/home/snapshot
	   mount -o ro /dev/md0 /mnt/

SEE ALSO
     chmod(2), chown(8), mdconfig(8), mount(8)

CAVEATS
     The disk full situation is not handled gracefully and may lead to a sys‐
     tem panic when no free blocks are found.

HISTORY
     The mksnap_ffs utility first appeared in FreeBSD 5.0.

BSD				 May 29, 2009				   BSD
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