Date: Tue, 12 Jan 2021 23:50:56 +0100 From: Lapo Luchini <lapo@lapo.it> To: freebsd-fs@freebsd.org Subject: `zfs send` immediately stops with "Assertion failed: (progress)" 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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