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from basetest import *
class TestZfsNode(unittest2.TestCase):
def setUp(self):
prepare_zpools()
self.longMessage=True
def test_destroymissing(self):
#initial backup
with mocktime("19101111000000"): #1000 years in past
self.assertFalse(ZfsAutobackup("test test_target1 --no-progress --verbose --no-holds".split(" ")).run())
with mocktime("20101111000000"): #far in past
self.assertFalse(ZfsAutobackup("test test_target1 --no-progress --verbose --no-holds --allow-empty".split(" ")).run())
with self.subTest("Should do nothing yet"):
with OutputIO() as buf:
with redirect_stdout(buf):
self.assertFalse(ZfsAutobackup("test test_target1 --no-progress --verbose --no-snapshot --destroy-missing 0s".split(" ")).run())
print(buf.getvalue())
self.assertNotIn(": Destroy missing", buf.getvalue())
with self.subTest("missing dataset of us that still has children"):
#just deselect it so it counts as 'missing'
shelltest("zfs set autobackup:test=child test_source1/fs1")
with OutputIO() as buf:
with redirect_stdout(buf), redirect_stderr(buf):
self.assertFalse(ZfsAutobackup("test test_target1 --no-progress --verbose --no-snapshot --destroy-missing 0s".split(" ")).run())
print(buf.getvalue())
#should have done the snapshot cleanup for destoy missing:
self.assertIn("fs1@test-19101111000000: Destroying", buf.getvalue())
self.assertIn("fs1: Destroy missing: Still has children here.", buf.getvalue())
shelltest("zfs inherit autobackup:test test_source1/fs1")
with self.subTest("Normal destroyed leaf"):
shelltest("zfs destroy -r test_source1/fs1/sub")
#wait for deadline of last snapshot
with OutputIO() as buf:
with redirect_stdout(buf):
#100y: lastest should not be old enough, while second to latest snapshot IS old enough:
self.assertFalse(ZfsAutobackup("test test_target1 --no-progress --verbose --no-snapshot --destroy-missing 100y".split(" ")).run())
print(buf.getvalue())
self.assertIn(": Waiting for deadline", buf.getvalue())
#past deadline, destroy
with OutputIO() as buf:
with redirect_stdout(buf):
self.assertFalse(ZfsAutobackup("test test_target1 --no-progress --verbose --no-snapshot --destroy-missing 1y".split(" ")).run())
print(buf.getvalue())
self.assertIn("sub: Destroying", buf.getvalue())
with self.subTest("Leaf with other snapshot still using it"):
shelltest("zfs destroy -r test_source1/fs1")
shelltest("zfs snapshot -r test_target1/test_source1/fs1@other1")
with OutputIO() as buf:
with redirect_stdout(buf):
self.assertFalse(ZfsAutobackup("test test_target1 --no-progress --verbose --no-snapshot --destroy-missing 0s".split(" ")).run())
print(buf.getvalue())
#cant finish because still in use:
self.assertIn("fs1: Destroy missing: Still in use", buf.getvalue())
shelltest("zfs destroy test_target1/test_source1/fs1@other1")
with self.subTest("In use by clone"):
shelltest("zfs clone test_target1/test_source1/fs1@test-20101111000000 test_target1/clone1")
with OutputIO() as buf:
with redirect_stdout(buf), redirect_stderr(buf):
self.assertFalse(ZfsAutobackup("test test_target1 --no-progress --verbose --no-snapshot --destroy-missing 0s".split(" ")).run())
print(buf.getvalue())
#now tries to destroy our own last snapshot (before the final destroy of the dataset)
self.assertIn("fs1@test-20101111000000: Destroying", buf.getvalue())
#but cant finish because still in use:
self.assertIn("fs1: Error during --destroy-missing", buf.getvalue())
shelltest("zfs destroy test_target1/clone1")
with self.subTest("Should leave test_source1 parent"):
with OutputIO() as buf:
with redirect_stdout(buf), redirect_stderr(buf):
self.assertFalse(ZfsAutobackup("test test_target1 --no-progress --verbose --no-snapshot --destroy-missing 0s".split(" ")).run())
print(buf.getvalue())
#should have done the snapshot cleanup for destoy missing:
self.assertIn("fs1: Destroying", buf.getvalue())
with OutputIO() as buf:
with redirect_stdout(buf), redirect_stderr(buf):
self.assertFalse(ZfsAutobackup("test test_target1 --no-progress --verbose --no-snapshot --destroy-missing 0s".split(" ")).run())
print(buf.getvalue())
#on second run it sees the dangling ex-parent but doesnt know what to do with it (since it has no own snapshot)
self.assertIn("test_source1: Destroy missing: has no snapshots made by us", buf.getvalue())
#end result
r=shelltest("zfs list -H -o name -r -t all test_target1")
self.assertMultiLineEqual(r,"""
test_target1
test_target1/test_source1
test_target1/test_source2
test_target1/test_source2/fs2
test_target1/test_source2/fs2/sub
test_target1/test_source2/fs2/sub@test-19101111000000
test_target1/test_source2/fs2/sub@test-20101111000000
""")
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