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List: freebsd-fs
Subject: `zfs send` immediately stops with "Assertion failed: (progress)"
From: Lapo Luchini <lapo () lapo ! it>
Date: 2021-01-12 22:50:56
Message-ID: rtl94h$i7m$1 () ciao ! gmane ! io
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I migrated this server a few times already on new hardware over the
years, by using `zfs send`.
Even right now I'm using `zrepl` to periodically have a remote copy to a
distant site (for disaster recovery).
But trying to migrate on a new server in the same server farm recently
I'm seeing this error:
$ sudo zfs send -Rv z@recentSnapshot >/dev/null
Assertion failed: (progress), file
/usr/src/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c,
line 1511.
This is happening in a freshly updated FreeBSD 12.2-RELEASE-p2.
I don't know how to reproduce it (or debug it) and the server is serving
production data, so I can only do non-intrusive tests.
I guess it has something to do with clones, given the comments at line
1480 and line 1492 so maybe I can print something with `zdb`?
Any idea how to debug (and solve)?
PS: it's a bit out of topic, but since the code in latest OpenZFS seems
to be exactly the same, I opened a bug there too:
https://github.com/openzfs/zfs/issues/11457
--
Lapo Luchini - http://lapo.it/
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