How to shrink a HAMMER partition without data loss?

Tomohiro Kusumi kusumi.tomohiro at
Wed Sep 27 04:48:52 PDT 2017

There is no fs resizing within a partition/device.

(Note that there is volume add/delete as a fs feature (i.e. not LVM))

2017-09-27 14:32 GMT+03:00 Aaron LI <aly at>:
> Hi DFlyers,
> I'm running DragonFlyBSD on a VPS, with partition scheme of boot(UFS) +
> swap + root(HAMMER) (all these 3 partitions are located in a BSD slice).
> I want to shrink the root partition (HAMMER filesystem) in order to make
> room for a bigger dump partition (*), as well as for other tests.  How
> can I achieve this without data loss?
> (*) The VPS has 512MB RAM, and I configured 1GB swap partition (LUKS
> encrypted), which is also set to be the dump device; but the system
> complains the partition is too small to dump...
> Cheers,
> --
> Aly

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