Date: Mon, 7 Dec 2020 18:18:49 +1030 From: "Daniel O'Connor" <darius@dons.net.au> To: "O'Connor, Daniel via freebsd-hackers" <freebsd-hackers@freebsd.org> Subject: zfs send from an ancient system Message-ID: <308513D0-0CA6-462F-B3C6-03BF5A617081@dons.net.au>
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Hi everyone, I am trying to migrate an ancient (FreeBSD 8.2!) ZFS system to something = newer (12.2). I was hoping to be able to zfs send | zfs recv, however I = get this.. root@newsystem:~ # ssh root@oldsystem zfs send tank/www@20201201-0902 | = zfs recv -d tank/Old cannot receive new filesystem stream: invalid backup stream I have also tried zfs send to a file, copying over and verifying they = are identical, but I get the same result. The new system's zstreamdump seems happy with the stream: [midget 18:14] ~ >zcat /tmp/test.gz| zstreamdump BEGIN record hdrtype =3D 1 features =3D 0 magic =3D 2f5bacbac creation_time =3D 5fc49191 type =3D 2 flags =3D 0x0 toguid =3D 54852dc9f8234af4 fromguid =3D 0 toname =3D www@20201201-0902 END checksum =3D = 100209f0a087fed/dd40d3fa795d846e/ae2049c273df5121/f012e76312cbb2a3 SUMMARY: Total DRR_BEGIN records =3D 1 Total DRR_END records =3D 1 Total DRR_OBJECT records =3D 12961 Total DRR_FREEOBJECTS records =3D 2820 Total DRR_WRITE records =3D 13565 Total DRR_WRITE_BYREF records =3D 0 Total DRR_WRITE_EMBEDDED records =3D 0 Total DRR_FREE records =3D 28490 Total DRR_SPILL records =3D 0 Total records =3D 57838 Total write size =3D 148137472 (0x8d46600) Total stream length =3D 169604120 (0xa1bf418) Is there some debugging that can be enabled to get some idea about = what's going wrong? 'dmesg' doesn't show anything on the sender or = receiver side. I am sure I have done this in the past from this machine, unfortunately = I don't have the receiving machine any more as it got repurposed. Thanks. PS I am well aware of the warning in the man page about send format. -- Daniel O'Connor "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum
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