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Date:      Fri, 18 Sep 2020 04:41:20 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 222425] GPT broken after "gpart backup ada0 | gpart restore -F ada1"
Message-ID:  <bug-222425-227-zBfcki8X2V@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-222425-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-222425-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D222425

--- Comment #15 from Louis <lrb@minmet.org> ---
(In reply to Christos Chatzaras from comment #14)
Interesting.

In my case, I wasn't trying to set up gmirror, but just to copy a 500 GB di=
sk
onto a 2 TB one, because I was running out of space. (The machine is my
desktop, incidentally.)

I did this backup/restore thing, figured I'd keep the 1st partition, and
delete/recreate the others with larger sizes. Maybe that also had something=
 to
do with triggering the bug.

I do wonder why I'm not using the occasion to switch to ZFS. Probably becau=
se
I'm a bit conservative and don't fully trust it yet, LOL. So I get these
problems instead!

I have other boxes set up with UFS and gmirror and did manage to get them to
the point where they'd boot off either drive. Somehow, I didn't end up
triggering the bug that time. I wonder why not. Maybe because I didn't try =
to
delete/recreate any    partitions? It reminds me of the interesting time I =
had
setting up gmirror on a hosted server, where FreeBSD isn't supported, and I=
 was
trying to do it without having to have a KVM put in. I did manage it once, =
but
only after practicing it on a test box at home first!

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