add code to automatically handle manual FSCK errors.
authorStephen Soltesz <soltesz@cs.princeton.edu>
Mon, 27 Jul 2009 16:22:22 +0000 (16:22 +0000)
committerStephen Soltesz <soltesz@cs.princeton.edu>
Mon, 27 Jul 2009 16:22:22 +0000 (16:22 +0000)
monitor/bootman.py

index c127611..96bc740 100755 (executable)
@@ -122,6 +122,28 @@ class NodeConnection:
                else:
                        print "   Unable to read Node Configuration"
                
+       def fsck_repair_node(self):
+               c = self.c
+               self.c.modules.sys.path.append("/tmp/source/")
+               self.c.modules.os.chdir('/tmp/source')
+               # TODO: restart
+               # TODO: set boot state to node's actually boot state.
+               # could be 'boot' or 'safeboot'
+               self.c.modules.os.chdir('/tmp/source')
+               if self.c.modules.os.path.exists('/tmp/BM_RUNNING'):
+                       print "Running MANUAL FSCK already... try again soon."
+               else:
+                       print "Running MANUAL fsck on %s" % self.node
+                       cmd = "( touch /tmp/BM_RUNNING ;  " + \
+                                 "  fsck -v -f -y /dev/planetlab/root &> out.fsck ; " + \
+                                 "  fsck -v -f -y /dev/planetlab/vserver >> out.fsck 2>&1 ; " + \
+                                 "  python ./BootManager.py %s &> server.log < /dev/null ; " + \
+                                 "  rm -f /tmp/BM_RUNNING " + \
+                                 ") &" 
+                       cmd = cmd % self.get_nodestate()
+                       self.c.modules.os.system(cmd)
+               #self.restart_bootmanager('boot')       
+               pass
 
        def compare_and_repair_nodekeys(self):
                c = self.c
@@ -173,6 +195,16 @@ class NodeConnection:
        def set_nodestate(self, state='boot'):
                return api.UpdateNode(self.node, {'boot_state' : state})
 
+       def get_nodestate(self):
+               try:
+                       return api.GetNodes(self.node, ['boot_state'])[0]['boot_state']
+               except:
+                       traceback.print_exc()
+                       # NOTE: use last cached value from plc
+                       fbnode = FindbadNodeRecord.get_latest_by(hostname=self.node).to_dict()
+                       return fbnode['plc_node_stats']['boot_state']
+
+
        def restart_node(self, state='boot'):
                api.UpdateNode(self.node, {'boot_state' : state})
 
@@ -248,7 +280,8 @@ class PlanetLabSession:
                        return 
 
                # COPY Rpyc files to host
-               cmd = "rsync -qv -az -e ssh %(monitordir)s/Rpyc/ %(user)s@%(hostname)s:Rpyc 2> /dev/null" % args
+               #cmd = "rsync -vvv -az -e ssh %(monitordir)s/Rpyc/ %(user)s@%(hostname)s:Rpyc 2> /dev/null" % args
+               cmd = """rsync -vvv -az -e "ssh -o BatchMode=yes" %(monitordir)s/Rpyc/ %(user)s@%(hostname)s:Rpyc""" % args
                if self.verbose: print cmd
                print cmd
                # TODO: Add timeout
@@ -261,6 +294,8 @@ class PlanetLabSession:
                        print "\tUNKNOWN SSH KEY FOR %s; making an exception" % self.node
                        #print "MAKE EXPLICIT EXCEPTION FOR %s" % self.node
                        k = SSHKnownHosts(); k.updateDirect(self.node); k.write(); del k
+                       print "trying: ", cmd
+                       print [ "%s=%s" % (a, os.environ[a]) for a in filter(lambda x: 'SSH' in x, os.environ.keys()) ]
                        ret = localos.system(cmd, timeout)
                        print ret
                        if ret != 0:
@@ -359,13 +394,13 @@ class DebugInterface:
                        print traceback.print_exc()
                        return False
 
+               msg = "ERROR setting up session for %s" % self.hostname
                try:
                        if config == None:
                                self.session = PlanetLabSession(self.hostname, False, True)
                        else:
                                self.session = PlanetLabSession(self.hostname, config.nosetup, config.verbose)
                except ExceptionDoubleSSHError, e:
-                       msg = "ERROR setting up session for %s" % self.hostname
                        print msg
                        return False
                except Exception, e:
@@ -455,6 +490,7 @@ class DebugInterface:
                # repair_node_keys
                for n in ["bminit-cfg-auth-bootcheckfail-authfail-exception-update-bootupdatefail-authfail-debug-validate-exception-done",
                                        "bminit-cfg-auth-bootcheckfail-authfail-exception-update-bootupdatefail-authfail-debug-done",
+                                       "bminit-cfg-auth-bootcheckfail-authfail-exception-update-debug-validate-exception-done",
                                ]:
                        sequences.update({n: "repair_node_keys"})
 
@@ -485,16 +521,25 @@ class DebugInterface:
                                 ]:
                        sequences.update({n: "restart_node_boot"})
 
+               # fsck_repair
+               for n in ["bminit-cfg-auth-getplc-update-installinit-validate-fsckabort-exception-fsckfail-bmexceptmount-exception-noinstall-update-debug-validate-fsckabort-exception-fsckfail-bmexceptmount-done",
+                                 "bminit-cfg-auth-getplc-installinit-validate-exception-fsckfail-exception-noinstall-update-debug-validate-exception-fsckfail-done",
+                                 "bminit-cfg-auth-getplc-update-installinit-validate-exception-fsckfail-exception-noinstall-update-debug-validate-exception-fsckfail-done"
+                               ]:
+                       sequences.update({n : "fsck_repair"})
+
                # update_node_config_email
                for n in ["bminit-cfg-exception-nocfg-update-bootupdatefail-nonode-debug-done",
                                  "bminit-cfg-exception-update-bootupdatefail-nonode-debug-done",
                                  "bminit-cfg-exception-update-bootupdatefail-nonode-debug-validate-exception-done",
                                  "bminit-cfg-exception-nocfg-update-bootupdatefail-nonode-debug-validate-exception-done",
                                  "bminit-cfg-auth-bootcheckfail-nonode-exception-update-bootupdatefail-nonode-debug-done",
+                                 "bminit-cfg-exception-noconfig-update-debug-validate-exception-done",
                                ]:
                        sequences.update({n : "update_node_config_email"})
 
                for n in [ "bminit-cfg-exception-nodehostname-update-debug-done", 
+                                  "bminit-cfg-update-exception-nodehostname-update-debug-validate-exception-done",
                                   "bminit-cfg-update-exception-nodehostname-update-debug-done", 
                                ]:
                        sequences.update({n : "nodenetwork_email"})
@@ -606,12 +651,15 @@ class DebugInterface:
                        ('protoerror'   , 'XML RPC protocol error'),
                        ('nodehostname' , 'Configured node hostname does not resolve'),
                        ('implementerror', 'Implementation Error'),
-                       ('readonlyfs'   , '[Errno 30] Read-only file system'),
-                       ('baddisk'      , "IOError: [Errno 13] Permission denied: '/tmp/mnt/sysimg//vservers/\w+/etc/hosts'"),
+                       ('fsckabort'    , 'is mounted.  e2fsck: Cannot continue, aborting'),
+                       ('fsckfail'             , 'Running e2fsck -v -p /dev/planetlab/root failed'),
+                       ('readonlyfs'   , '\[Errno 30\] Read-only file system'),
+                       ('baddisk'      , "IOError: \[Errno 13\] Permission denied: '/tmp/mnt/sysimg//vservers/\w+/etc/hosts'"),
                        ('noinstall'    , 'notinstalled'),
                        ('bziperror'    , 'bzip2: Data integrity error when decompressing.'),
                        ('noblockdev'   , "No block devices detected."),
                        ('dnserror'     , 'Name or service not known'),
+                       ('noconfig'             , "Unable to find and read a node configuration file"),
                        ('downloadfail' , 'Unable to download main tarball /boot/bootstrapfs-planetlab-i386.tar.bz2 from server.'),
                        ('disktoosmall' , 'The total usable disk size of all disks is insufficient to be usable as a PlanetLab node.'),
                        ('hardwarerequirefail' , 'Hardware requirements not met'),
@@ -768,12 +816,13 @@ def restore_basic(sitehist, hostname, config=None, forced_action=None):
                        conn.restart_node('reinstall')
                elif sequences[s] == "restart_node_boot":
                        conn.restart_node('boot')
+               elif sequences[s] == "fsck_repair":
+                       conn.fsck_repair_node()
                elif sequences[s] == "repair_node_keys":
                        if conn.compare_and_repair_nodekeys():
                                # the keys either are in sync or were forced in sync.
-                               # so try to reboot the node again.
-                               # TODO: why was this originally 'reinstall' instead of 'boot'??
-                               conn.restart_bootmanager('boot')
+                               # so try to start BM again.
+                               conn.restart_bootmanager(conn.get_nodestate())
                                pass
                        else:
                                # there was some failure to synchronize the keys.