Clone a FBSD system with something in the likes of ghost
jd1008 at gmail.com
Sun Oct 2 18:13:13 UTC 2016
By clone, you mean create a new disk with identical
content to the cloned disk? Including the boot blocks
of the cloned disk?
If so, dump and restore will only perform like a full backup.
The target (copy-to) disk will not be bootable.
If you want it bootable, then there is a simlpe procedure
1. Obtain a new disk with sufficient capacity as close as possible
to size of the source disk. Not less than, though!!
2. dd if=</dev/..... i.e. the source disk> of=/dev/..... i.e. the new disk>
bs=128M conv=notrunc conv=fdatasync
When finished, without error,
the new disk will be a bootable mirror of the original.
On Thu, Sep 29, 2016 at 6:37 PM, Alejandro Imass <aimass at yabarana.com>
> On Thu, Sep 29, 2016 at 1:10 AM, Warren Block <wblock at wonkity.com> wrote:
> > On Thu, 29 Sep 2016, Robert Huff wrote:
> >> On 9/28/2016 10:43 PM, Alejandro Imass wrote:
> >>> I have a beautiful running server (dozens of jails and intricate
> >>> configuration) on a single small and aging hard drive. I bought 2 new
> >>> drives and want to migrate to a ZFS mirror.
> >>> Pardon my ignorance but would there be a way to just copy my system
> >>> the old drive to the new ZFS array?
> >>> I was thinking of something like this: 1) install the two new drives
> in the
> >>> server and boot with old drive via an USB enclosure. 2) Create a
> >>> ZFS array and somehow copy an identical image of my current system
> onto the
> >>> array.
> >>> Am I dreaming or are there actual ways of doing this? I really don't
> >>> to re-install and configure everything. Just want to move an identical
> >>> of my system to the new hard drives on a ZFS mirror.
> >> The canonical - and correct - method involves dump piped to
> restore; there may be an example in the Handbook.
> > I have not tried it, but I think restore(8) should work when writing to
> a ZFS system.
> > So dump(8) on the original UFS piped to restore(8) on ZFS, presumably in
> a dataset or multiple datasets.
> > http://www.wonkity.com/~wblock/docs/html/backup.html
> > After it is on ZFS, dump(8) cannot be used, but zfs send and zfs recv
> are similar. Or rsync, or tar, or clonehd, or other things. The options
> with them are the trick. It takes a lot to get rsync to make a serious
> copy of a non-trivial filesystem with links and flags.
> Thanks for your suggestions!
> I will look into dump and restore.
> Thanks again!
> Alejandro Imass
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