Cannot receive older ZFS dumps

["Udo Grabowski (IMK)" <udo.grabowski@kit.edu>]

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Hi,

it seems that older zfs images (from zfs send) cannot be imported
into recent illumos versions. These are dumps from a "pre-features"
zpool. I get

ro suntc ~ # cat 32@20100825 | zfs receive -d rpool
cannot receive new filesystem stream: invalid backup stream

while I can still import those on an older illumos (in oi151.a8).

This is what zstreamdump sees:

# cat 32@20100825|zstreamdump
BEGIN record
         hdrtype = 1
         features = 0
         magic = 2f5bacbac
         creation_time = 4c751a60
         type = 2
         flags = 0x0
         toguid = d5549c3062863864
         fromguid = 0
         toname = Processor/Results/imk/32@20100825
END checksum = ac3419bb76a98f7/9a5ac336e407bdf3/c07a3f469bc7e40e/f03a369ef26634ee
SUMMARY:
         Total DRR_BEGIN records = 1
         Total DRR_END records = 1
         Total DRR_OBJECT records = 131771
         Total DRR_FREEOBJECTS records = 716
         Total DRR_WRITE records = 133062
         Total DRR_WRITE_BYREF records = 0
         Total DRR_WRITE_EMBEDDED records = 0
         Total DRR_FREE records = 300918
         Total DRR_SPILL records = 0
         Total records = 566469
         Total write size = 1690867200 (0x64c89600)
         Total stream length = 1902392632 (0x71643538)

Is this a bug or are "non-feature" dumps in general not importable
on "feature"-zpools ?
-- 
Dr.Udo Grabowski  Inst.of Meteorology & Climate Research IMK-ASF-SAT
https://www.imk-asf.kit.edu/english/sat.php
KIT - Karlsruhe Institute of Technology          https://www.kit.edu
Postfach 3640,76021 Karlsruhe,Germany T:(+49)721 608-26026 F:-926026


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