Date: Wed, 20 Feb 2019 22:13:13 +0200 From: Christos Chatzaras <chris@cretaforce.gr> To: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: Duplicating file system Message-ID: <32153EA7-4BC5-4EE2-98FA-5BDEE1903BA3@cretaforce.gr> In-Reply-To: <0A33E3BE-96C9-4D83-B9F7-D4D2792B5161@kreme.com> References: <0A33E3BE-96C9-4D83-B9F7-D4D2792B5161@kreme.com>
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> On 20 Feb 2019, at 21:52, Cerebus <kreme@kreme.com> wrote: >=20 > I have an 11.2 system with two identical SSD drives. Currently I am = using rsnapshot to keep backups of the primary drive on the secondary = drive, but I am interested in having the second drive have a duplicate = copy of the entire file system in a bootable form, updated as the root = drive is modified. >=20 > How would I do this? >=20 > I don=E2=80=99t really want a RAID0 because I want to also keep the = periodic backups from rsnapshot as the drives are about 10x larger than = my data. >=20 > --=20 > This is my signature. There are many like it, but this one is mine. If both disks have the same size the easiest but not fastest way is to = use dd: dd if=3D/dev/ada0 of=3D/dev/ada1 bs=3D64k=
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