On Thu, Apr 26, 2007 at 12:56:50AM +0400, Alexey Tarasov wrote: > Hello Pawel. > > I have a question about ZFS and mv utility. I have the following pool configuration: > > NAME USED AVAIL REFER MOUNTPOINT > storage 62,1G 121G 26K /storage > storage/music 7,95G 121G 7,95G /storage/music > storage/oldhome 47,5G 121G 47,5G /storage/oldhome > > I made the following operation: mv /storage/oldhome/lexa/music/* /storage/music and that operation took a very long time. It seems that MV copies files first from > storage/oldhome/lexa/musc to storage/music and then deletes them from old location. But I move files within one storage pool and it should work as fast, as it works on UFS > partition. Does it need to be modified for compatibility with ZFS? From mv(1) manual page: As the rename(2) call does not work across file systems, mv uses cp(1) and rm(1) to accomplish the move. The effect is equivalent to: rm -f destination_path && \ cp -pRP source_file destination && \ rm -rf source_file ZFS pool is not a file system. Look at mount(8) output. It would be possible in theory to move data faster within one pool and this was discussed on zfs-discuss_at_opensolaris.org, you may want to search the archives. -- Pawel Jakub Dawidek http://www.wheel.pl pjd_at_FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am!
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