Date: Thu, 27 May 2021 12:00:32 +0200 From: Dimitry Andric <dim@FreeBSD.org> To: tech-lists <tech-lists@zyxst.net> Cc: freebsd-fs@freebsd.org Subject: Re: simple question regarding moving zfs filesystems Message-ID: <9C587D2D-F923-4F37-A49A-9513F5BE2B8F@FreeBSD.org> In-Reply-To: <YK8yjavE7ex4KBuN@ceres.zyxst.net> References: <YK8yjavE7ex4KBuN@ceres.zyxst.net>
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On 27 May 2021, at 07:47, tech-lists <tech-lists@zyxst.net> wrote:
>=20
> Is it the case that, if I want to transfer filesystems from one pool =
to
> another, that the descendant filesystems/vols will also be =
transferred?
>=20
> lets say there is one zpool called "data" and another called "new"
>=20
> zfs list shows:
>=20
> NAME USED AVAIL REFER MOUNTPOINT
> data/pkg 32.2K 5.88T 32.2K /usr/local/etc/pkg
> data/poudriere 22.9G 5.88T 31.4K /poudriere
> data/poudriere-bulk 164G 5.88T 164G /usr/local/poudriere
> data/poudriere/jails 22.9G 5.88T 37.4K /poudriere/jails
> data/vm1 256G 5.88T 256G -
>=20
> if I do zfs snapshot data@snapshot1 and then:
>=20
> zfs send data@snapshot1 | zfs receive new
>=20
> will what's in data and data/pkg data/poudriere etc appear under new ?
> will characteristics like compression remain the same?
> On data compression=3Dlz4 on new it's zstd.
I think you can use "zfs send -R" to achieve what you want:
-R, --replicate
Generate a replication stream package, which will =
replicate
the specified filesystem, and all descendent file =
systems, up
to the named snapshot. When received, all properties,
snapshots, descendent file systems, and clones are =
preserved.
If the -i or -I flags are used in conjunction with the =
-R
flag, an incremental replication stream is generated. =
The
current values of properties, and current snapshot and =
file
system names are set when the stream is received. If =
the -F
flag is specified when this stream is received, =
snapshots and
file systems that do not exist on the sending side are
destroyed.
-Dimitry
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