Date: Thu, 21 Feb 2019 08:14:34 +0100 From: Polytropon <freebsd@edvax.de> To: "Jack L." <xxjack12xx@gmail.com> Cc: "@lbutlr" <kremels@kreme.com>, "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: Duplicating file system Message-ID: <20190221081434.365f78a7.freebsd@edvax.de> In-Reply-To: <CALeGphzvXyC698XqHO0owP43gad5tnjRsQTQU0-xLYi-%2BVNeBg@mail.gmail.com> References: <0A33E3BE-96C9-4D83-B9F7-D4D2792B5161@kreme.com> <32153EA7-4BC5-4EE2-98FA-5BDEE1903BA3@cretaforce.gr> <4CAB4BC4-0473-41CF-AF03-D1CE796F5545@cretaforce.gr> <0F4BBC09-3F9D-4740-A8E4-BB3B87F2A657@kreme.com> <20190221032121.c0006dfe.freebsd@edvax.de> <C8D2F401-AC47-4089-AD34-A2E7E8E033C0@kreme.com> <20190221075515.c815b269.freebsd@edvax.de> <CALeGphzvXyC698XqHO0owP43gad5tnjRsQTQU0-xLYi-%2BVNeBg@mail.gmail.com>
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On Wed, 20 Feb 2019 23:08:57 -0800, Jack L. wrote: > I missed the original thread but if I want to duplicate my filesystem, > i usually use the dump and restore method > > cd targetdir;dump -0f - /dev/device|restore -rf - > > that will dump the /dev/device to stdout and then restore stdout to > the target. Very quick. The problem here probably is that it won't be fast enough, and that it requires the source device to be unmounted (or at least a snapshot will be used). As for the _initial_ duplication, this method works really well, but it requires that you have already setup the correct partitioning beforehand. With the dd approach and identical devices, this step can be omitted. For the subsequent "syncing", an incremental method as supported by "dump | restore" would probably also be possible, but again not fast enough, plus the "snapshot problem" mentioned initially. -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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