Andrew Gabriel <andrew.gabr...@oracle.com> wrote:

> Dan Shelton wrote:
> > Is anyone aware of any freeware program that can speed up copying tons 
> > of data (2 TB) from UFS to ZFS on same server?
>
> I use 'ufsdump | ufsrestore'*. I would also suggest try setting 
> 'sync=disabled' during the operation, and reverting it afterwards. 
> Certainly, fastfs (a similar although more dangerous option for ufs) 
> makes ufs to ufs copying significantly faster.
>
> *ufsrestore works fine on ZFS filesystems (although I haven't tried it 
> with any POSIX ACLs on the original ufs filesystem, which would probably 
> simply get lost).

star -copy -no-fsync .... is typically 30% faster that ufsdump | ufsrestore.

Jörg

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