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authorloli10K <[email protected]>2017-12-31 00:25:56 +0100
committerBrian Behlendorf <[email protected]>2018-02-14 14:35:04 -0800
commit4411de2116bbe46633746a163c54445db9e786d4 (patch)
treee201c2f7daaf0fa06ffa015d8157be85bcbda26a /module/lua/lzio.c
parent9c5167d19fe02e44ba09c6d0282363c19781b19d (diff)
OpenZFS 8940 - Sending an intra-pool resumable send stream may result in EXDEV
Because resuming from a token requires "guid" -> "snapshot" mapping we have to walk the whole dataset hierarchy to find the right snapshot to send; when both source and destination exists, for an incremental resumable stream, libzfs gets confused and picks up the wrong snapshot to send from: this results in attempting to send "destination@snap1 -> source@snap2" instead of "source@snap1 -> source@snap2" which fails with a "Invalid cross-device link" error (EXDEV). Fix this by adjusting the logic behind dataset traversal in zfs_iter_children() to pick the right snapshot to send from. Additionally update dry-run 'zfs send -t' to print its output to stderr: this is consistent with other dry-run commands. Patch Notes: Reconciled differences between OpenZFS and aee1dd4d983c64db3c3155290d48f05243e85709. Authored by: loli10K <[email protected]> Reviewed by: Paul Dagnelie <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Brian Behlendorf <[email protected]> Approved by: Hans Rosenfeld <[email protected]> Ported-by: Giuseppe Di Natale <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/8940 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/9f7867c206 Closes #7171
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