Hi all, I'm playing around with nearline backups using zfs send | zfs recv. A full backup made this way takes quite a lot of time, so I was wondering: after the initial copy, would using an incremental send (zfs send -i) make the process much quick because only the stuff that had changed between the previous snapshot and the current one be copied? Is my understanding of incremental zfs send correct?
Also related to this is a performance question. My initial test involved copying a 50 MB zfs file system to a new disk, which took 2.5 minutes to complete. The strikes me as being a bit high for a mere 50 MB; are my expectation realistic or is it just because of my very budget concious set up? If so, where's the bottleneck? The source pool is on a pair of 146 GB 10K RPM disks on separate busses in a D1000 (split bus arrangement) and the destination pool is on a IOMega 1 GB USB attached disk. The machine to which both pools are connected is a Sun Blade 1000 with a pair of 900 MHz US-III CPUs and 2 GB of RAM. The HBA is Sun's dual differential UltraSCSI PCI card. The machine was relatively quiescent apart from doing the local zfs send | zfs recv. -- Rich Teer, Publisher Vinylphile Magazine www.vinylphilemag.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
