mirror of
https://github.com/ceph/ceph
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79 lines
3.7 KiB
Python
79 lines
3.7 KiB
Python
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from tasks.cephfs.cephfs_test_case import CephFSTestCase
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class TestBacktrace(CephFSTestCase):
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def test_backtrace(self):
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"""
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That the 'parent' and 'layout' xattrs on the head objects of files
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are updated correctly.
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"""
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old_data_pool_name = self.fs.get_data_pool_name()
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old_pool_id = self.fs.get_data_pool_id()
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# Create a file for subsequent checks
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self.mount_a.run_shell(["mkdir", "parent_a"])
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self.mount_a.run_shell(["touch", "parent_a/alpha"])
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file_ino = self.mount_a.path_to_ino("parent_a/alpha")
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# That backtrace and layout are written after initial flush
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self.fs.mds_asok(["flush", "journal"])
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backtrace = self.fs.read_backtrace(file_ino)
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self.assertEqual(['alpha', 'parent_a'], [a['dname'] for a in backtrace['ancestors']])
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layout = self.fs.read_layout(file_ino)
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self.assertDictEqual(layout, {
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"stripe_unit": 4194304,
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"stripe_count": 1,
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"object_size": 4194304,
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"pool_id": old_pool_id,
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"pool_ns": "",
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})
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self.assertEqual(backtrace['pool'], old_pool_id)
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# That backtrace is written after parentage changes
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self.mount_a.run_shell(["mkdir", "parent_b"])
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self.mount_a.run_shell(["mv", "parent_a/alpha", "parent_b/alpha"])
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self.fs.mds_asok(["flush", "journal"])
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backtrace = self.fs.read_backtrace(file_ino)
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self.assertEqual(['alpha', 'parent_b'], [a['dname'] for a in backtrace['ancestors']])
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# Create a new data pool
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new_pool_name = "data_new"
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new_pool_id = self.fs.add_data_pool(new_pool_name)
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# That an object which has switched pools gets its backtrace updated
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self.mount_a.setfattr("./parent_b/alpha",
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"ceph.file.layout.pool", new_pool_name)
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self.fs.mds_asok(["flush", "journal"])
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backtrace_old_pool = self.fs.read_backtrace(file_ino, pool=old_data_pool_name)
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self.assertEqual(backtrace_old_pool['pool'], new_pool_id)
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backtrace_new_pool = self.fs.read_backtrace(file_ino, pool=new_pool_name)
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self.assertEqual(backtrace_new_pool['pool'], new_pool_id)
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new_pool_layout = self.fs.read_layout(file_ino, pool=new_pool_name)
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self.assertEqual(new_pool_layout['pool_id'], new_pool_id)
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self.assertEqual(new_pool_layout['pool_ns'], '')
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# That subsequent linkage changes are only written to new pool backtrace
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self.mount_a.run_shell(["mkdir", "parent_c"])
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self.mount_a.run_shell(["mv", "parent_b/alpha", "parent_c/alpha"])
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self.fs.mds_asok(["flush", "journal"])
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backtrace_old_pool = self.fs.read_backtrace(file_ino, pool=old_data_pool_name)
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self.assertEqual(['alpha', 'parent_b'], [a['dname'] for a in backtrace_old_pool['ancestors']])
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backtrace_new_pool = self.fs.read_backtrace(file_ino, pool=new_pool_name)
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self.assertEqual(['alpha', 'parent_c'], [a['dname'] for a in backtrace_new_pool['ancestors']])
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# That layout is written to new pool after change to other field in layout
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self.mount_a.setfattr("./parent_c/alpha",
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"ceph.file.layout.object_size", "8388608")
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self.fs.mds_asok(["flush", "journal"])
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new_pool_layout = self.fs.read_layout(file_ino, pool=new_pool_name)
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self.assertEqual(new_pool_layout['object_size'], 8388608)
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# ...but not to the old pool: the old pool's backtrace points to the new pool, and that's enough,
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# we don't update the layout in all the old pools whenever it changes
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old_pool_layout = self.fs.read_layout(file_ino, pool=old_data_pool_name)
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self.assertEqual(old_pool_layout['object_size'], 4194304)
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