On Aug 14, 2010, at 8:26 AM, "Edward Ned Harvey" <sh...@nedharvey.com> wrote:
>> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- >> boun...@opensolaris.org] On Behalf Of Edward Ned Harvey >> >> #3 I previously believed that vmfs3 was able to handle sparse files >> amazingly well, like, when you create a new vmdk, it appears almost >> instantly regardless of size, and I believed you could copy sparse >> vmdk's >> efficiently, not needing to read all the sparse consecutive zeroes. I >> was >> wrong. > > Correction: I was originally right. ;-) > > In ESXi, if you go to command line (which is busybox) then sparse copies are > not efficient. > If you go into vSphere, and browse the datastore, and copy vmdk files via > gui, then it DOES copy efficiently. > > The behavior is the same, regardless of NFS vs iSCSI. > > You should always copy files via GUI. That's the lesson here. Technically you should always copy vmdk files via vmfstool on the command line. That will give you wire speed transfers. -Ross _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
