Jim Mauro wrote: > So I'm really exposing my ignorance here, but... > > You wrote "/... if you wish to keep your snapshots.../"... > I never mentioned snapshots, thus you > introduced the use of a ZFS snapshot as a method of doing what > I wish to do. And yes, snapshots and send are in the manual, and > I read about them. > > I intially (and perhaps incorrectly) rejected the use of snapshots for > my purposes since a snapshot is, by definition, a read-only copy > of the file system. What I need to do is copy the file system in it's > entirety, so I can mount the new file system read/write for online, > production use. Perhaps I should have been clearer about that. > > I will investigate using ZFS snapshots with ZFS send as a method > for accomplishing my task. I'm not convinced it's the best way > to acheive my goal, but if it's not, I'd like to make sure I understand > why not.
Hi Jim, I agree with Mattias - snapshots are the way to achieve this. The bit you might, perhaps, have missed is the _clone_ requirement so you can have read and write access: # zfs snapshot sink/[EMAIL PROTECTED] # zfs clone sink/[EMAIL PROTECTED] sink/newcopyofdata Or if you do want to use zfs send/recv # zfs snapshot sink/[EMAIL PROTECTED] # zfs send -R sink/[EMAIL PROTECTED] | zfs recv -d newzpool/dataset > Mattias Pantzare wrote: >> 2008/7/20 James Mauro <[EMAIL PROTECTED]>: >> >>> Is there an optimal method of making a complete copy of a ZFS, aside from >>> the conventional methods (tar, cpio)? >>> >>> We have an existing ZFS that was not created with the optimal recordsize. >>> We wish to create a new ZFS with the optimal recordsize (8k), and copy >>> all the data from the existing ZFS to the new ZFS. >>> >>> Obviously, we know how to do this using conventional utilities and commands. >>> >>> Is there a ZFS-specific method for doing that beats the heck of out tar, >>> etc? >>> (RTFM indicates there is not; I R'd the FM :^). >>> >> Use zfs send | zfs receive if you wish to keep your snapshots or if >> you will be doing the copy several times. You can send just the >> changes between two snapshots. >> >> (zfs send is in the FM :-) >> >> >>> This may or may not be a copy to the same zpool, and I'd also be interested >>> in >>> knowing of that makes a difference (I do not think it does)? >>> >> It does not. James C. McPherson -- Senior Kernel Software Engineer, Solaris Sun Microsystems http://blogs.sun.com/jmcp http://www.jmcp.homeunix.com/blog _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
