This presentation from LUG 2017 might be useful for you: http://cdn.opensfs.org/wp-content/uploads/2017/06/Wed06-CroweTom-lug17-ost_data_migration_using_ZFS.pdf
It shows how ZFS send/receive can be used to migrate data between OSTs. I used it as a reference when I worked with another admin to migrate a MDT to new hardware. -- Rick Mohr Senior HPC System Administrator National Institute for Computational Sciences http://www.nics.tennessee.edu > On Mar 29, 2019, at 6:03 PM, Hans Henrik Happe <ha...@nbi.dk> wrote: > > Hi Kurt, > > Haven't got much experience with the complete send/receive to a remote > ZFS fs. However, I've created my own scripts for just sending to files. > Also, I've moved an MDT from ashift=12 to ashift=9 with send/recv. It > worked without any problems. > > ZFS above 0.7.9 have issues together with dnodesize != legacy for receives: > > https://github.com/zfsonlinux/zfs/issues/8458 > > I'll look into ZnapZend :-) > > Cheers, > Hans Henrik > > On 25/03/2019 20.37, Kurt Strosahl wrote: >> Good Afternoon, >> >> >> I've been working on a new lustre file system, now with ZFS on the >> MDT (my current lustre file system uses ldiskfs). One of the reasons >> for this was the ability to use ZFS snapshots to backup the MDT, and I'm >> wondering if anyone has experience with zfs backup tools like ZnapZend? >> >> >> w/r, >> >> Kurt J. Strosahl >> System Administrator: Lustre, HPC >> Scientific Computing Group, Thomas Jefferson National Accelerator Facility >> >> >> _______________________________________________ >> lustre-discuss mailing list >> lustre-discuss@lists.lustre.org >> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org >> > _______________________________________________ > lustre-discuss mailing list > lustre-discuss@lists.lustre.org > http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org _______________________________________________ lustre-discuss mailing list lustre-discuss@lists.lustre.org http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org