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tasks: implement TestStrays.test_mv_hardlink_cleanup

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Signed-off-by: John Spray <john.spray@redhat.com>
This commit is contained in:
John Spray 2015-04-01 23:50:14 +01:00
parent a2a8c21abe
commit 7bc8875b42
1 changed files with 34 additions and 1 deletions
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35
tasks/cephfs/test_strays.py
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@ -326,10 +326,43 @@ class TestStrays(CephFSTestCase):
into one of his hardlinks.
"""
# Create file_a, file_b, and a hardlink to file_b
size_mb = 8
self.mount_a.write_n_mb("file_a", size_mb)
file_a_ino = self.mount_a.path_to_ino("file_a")
self.mount_a.write_n_mb("file_b", size_mb)
file_b_ino = self.mount_a.path_to_ino("file_b")
self.mount_a.run_shell(["ln", "file_b", "linkto_b"])
self.assertEqual(self.mount_a.path_to_ino("linkto_b"), file_b_ino)
# mv file_a file_b
self.mount_a.run_shell(["mv", "file_a", "file_b"])
# Proceed as with test_hardlink_reintegration
self.fs.mds_asok(['flush', 'journal'])
# Initially, linkto_b will still be a remote inode pointing to a newly created
# stray from when file_b was unlinked due to the 'mv'. No data objects should
# have been deleted, as both files still have linkage.
self.assertEqual(self.get_mdc_stat("num_strays"), 1)
self.assertEqual(self.get_mdc_stat("strays_created"), 1)
self.assertTrue(self.get_backtrace_path(file_b_ino).startswith("stray"))
self.assertTrue(self.fs.data_objects_present(file_a_ino, size_mb * 1024 * 1024))
self.assertTrue(self.fs.data_objects_present(file_b_ino, size_mb * 1024 * 1024))
# Trigger reintegration and wait for it to happen
self.assertEqual(self.get_mdc_stat("strays_reintegrated"), 0)
self.mount_a.run_shell(["mv", "linkto_b", "file_c"])
self.wait_until_equal(
lambda: self.get_mdc_stat("strays_reintegrated"),
expect_val=1, timeout=60, reject_fn=lambda x: x > 1
)
self.fs.mds_asok(['flush', 'journal'])
post_reint_bt = self.fs.read_backtrace(file_b_ino)
self.assertEqual(post_reint_bt['ancestors'][0]['dname'], "file_c")
self.assertEqual(self.get_mdc_stat("num_strays"), 0)
def test_migration_on_shutdown(self):
"""