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Subject: [Bug 216586] zfs panic: sa.sa_magic == 0x2F505A in
 zfs_space_delta_cb()
Date: Tue, 31 Jan 2017 13:04:48 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D216586

--- Comment #3 from Andriy Gapon <avg@FreeBSD.org> ---
Could it be that you have some old files that were created before your last=
 zfs
upgrade (even if that was a long time ago)?
Could it be that rsync updates those files?

You might find this issue (close, but no associated commit) to be interesti=
ng:
https://github.com/zfsonlinux/zfs/issues/2025

I see that in your case the wrong magic values also look like Unix timestam=
ps,
both from 25 April 2013.
Could you please check if you still have more files from that era?

P.S.
Some other similar reports in ZoL repository:
https://github.com/zfsonlinux/zfs/issues/1303
https://github.com/zfsonlinux/zfs/issues/3968

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