mirror of
https://github.com/ceph/ceph
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91 lines
2.6 KiB
Python
91 lines
2.6 KiB
Python
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"""
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Exercise the MDS's auto repair functions
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"""
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import logging
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import time
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from teuthology.orchestra.run import CommandFailedError
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from tasks.cephfs.cephfs_test_case import CephFSTestCase
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log = logging.getLogger(__name__)
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# Arbitrary timeouts for operations involving restarting
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# an MDS or waiting for it to come up
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MDS_RESTART_GRACE = 60
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class TestMDSAutoRepair(CephFSTestCase):
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def test_backtrace_repair(self):
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"""
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MDS should verify/fix backtrace on fetch dirfrag
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"""
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self.mount_a.run_shell(["mkdir", "testdir1"])
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self.mount_a.run_shell(["touch", "testdir1/testfile"])
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dir_objname = "{:x}.00000000".format(self.mount_a.path_to_ino("testdir1"))
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# drop inodes caps
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self.mount_a.umount_wait()
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# flush journal entries to dirfrag objects, and expire journal
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self.fs.mds_asok(['flush', 'journal'])
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# Restart the MDS to drop the metadata cache (because we expired the journal,
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# nothing gets replayed into cache on restart)
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self.fs.mds_stop()
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self.fs.mds_fail_restart()
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self.fs.wait_for_daemons()
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# remove testdir1's backtrace
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self.fs.rados(["rmxattr", dir_objname, "parent"])
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# readdir (fetch dirfrag) should fix testdir1's backtrace
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self.mount_a.mount()
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self.mount_a.wait_until_mounted()
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self.mount_a.run_shell(["ls", "testdir1"])
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# flush journal entries to dirfrag objects
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self.fs.mds_asok(['flush', 'journal'])
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# check if backtrace exists
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self.fs.rados(["getxattr", dir_objname, "parent"])
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def test_mds_readonly(self):
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"""
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test if MDS behave correct when it's readonly
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"""
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# operation should successd when MDS is not readonly
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self.mount_a.run_shell(["touch", "test_file1"])
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writer = self.mount_a.write_background(loop=True)
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time.sleep(10)
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self.assertFalse(writer.finished)
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# force MDS to read-only mode
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self.fs.mds_asok(['force_readonly'])
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time.sleep(10)
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# touching test file should fail
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try:
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self.mount_a.run_shell(["touch", "test_file1"])
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except CommandFailedError:
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pass
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else:
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self.assertTrue(False)
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# background writer also should fail
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self.assertTrue(writer.finished)
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# The MDS should report its readonly health state to the mon
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self.wait_for_health("MDS in read-only mode", timeout=30)
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# restart mds to make it writable
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self.fs.mds_fail_restart()
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self.fs.wait_for_daemons()
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self.wait_for_health_clear(timeout=30)
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