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test(syncoid): Add test to verify out-of-order snapshot sync 

This commit adds a regression test for the out-of-order snapshot
replication issue.

The new test case manipulates the system clock with `setdate` to create
snapshots with non-monotonic `creation` timestamps but a correct,
sequential `createtxg`. It then runs `syncoid` and verifies that all
snapshots were replicated, which is only possible if they are ordered
correctly by `createtxg`.

See #815 for the original test.
This commit is contained in:
Nick Liu 2025-06-11 13:01:00 -05:00
parent 258a664dc0
commit f2e1e4f8a0
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1 changed files with 46 additions and 0 deletions
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tests/syncoid/011_sync_out-of-order_snapshots/run.sh Executable file
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#!/bin/bash
# test verifying snapshots with out-of-order snapshot creation datetimes
set -x
set -e
. ../../common/lib.sh
POOL_IMAGE="/tmp/jimsalterjrs_sanoid_815.img"
POOL_SIZE="64M"
POOL_NAME="jimsalterjrs_sanoid_815"
truncate -s "${POOL_SIZE}" "${POOL_IMAGE}"
zpool create -m none -f "${POOL_NAME}" "${POOL_IMAGE}"
function cleanUp {
zpool export "${POOL_NAME}"
rm -f "${POOL_IMAGE}"
}
# export pool and remove the image in any case
trap cleanUp EXIT
zfs create "${POOL_NAME}"/before
zfs snapshot "${POOL_NAME}"/before@this-snapshot-should-make-it-into-the-after-dataset
disableTimeSync
setdate 1155533696
zfs snapshot "${POOL_NAME}"/before@oldest-snapshot
zfs snapshot "${POOL_NAME}"/before@another-snapshot-does-not-matter
../../../syncoid --sendoptions="Lec" "${POOL_NAME}"/before "${POOL_NAME}"/after
# verify
saveSnapshotList "${POOL_NAME}" "snapshot-list.txt"
grep "${POOL_NAME}/before@this-snapshot-should-make-it-into-the-after-dataset" "snapshot-list.txt" || exit $?
grep "${POOL_NAME}/after@this-snapshot-should-make-it-into-the-after-dataset" "snapshot-list.txt" || exit $?
grep "${POOL_NAME}/before@oldest-snapshot" "snapshot-list.txt" || exit $?
grep "${POOL_NAME}/after@oldest-snapshot" "snapshot-list.txt" || exit $?
grep "${POOL_NAME}/before@another-snapshot-does-not-matter" "snapshot-list.txt" || exit $?
grep "${POOL_NAME}/after@another-snapshot-does-not-matter" "snapshot-list.txt" || exit $?
exit 0