Hi Alex,

hmmm, just tried it again with the newest ubuntu package available.
crashed again, same result.  :(


LOGFILE:

140403 10:13:22 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
140403 10:13:22 mysqld_safe WSREP: Running position recovery with --log_error='/var/lib/mysql/wsrep_recovery.fpLUPy' --pid-file='/var/lib/mysql/srzotrsDB01-recover.pid'
140403 10:13:37 mysqld_safe WSREP: Recovered position a2a91839-9fb6-11e3-a366-f7e082d5377b:27494
2014-04-03 10:13:37 0 [Note] WSREP: wsrep_start_position var submitted: 'a2a91839-9fb6-11e3-a366-f7e082d5377b:27494'
2014-04-03 10:13:37 8593 [Note] WSREP: Setting wsrep_ready to 0
2014-04-03 10:13:37 8593 [Note] WSREP: Read nil XID from storage engines, skipping position init
2014-04-03 10:13:37 8593 [Note] WSREP: wsrep_load(): loading provider library '/usr/lib/libgalera_smm.so'
2014-04-03 10:13:37 8593 [Note] WSREP: wsrep_load(): Galera 3.4(r176) by Codership Oy <email address hidden> loaded successfully.
2014-04-03 10:13:37 8593 [Note] WSREP: CRC-32C: using hardware acceleration.
2014-04-03 10:13:37 8593 [Note] WSREP: Found saved state: a2a91839-9fb6-11e3-a366-f7e082d5377b:-1
2014-04-03 10:13:37 8593 [Note] WSREP: Passing config to GCS: base_host = 10.10.17.73; base_port = 4567; cert.log_conflicts = no; debug = no; evs.inactive_check_period = PT0.5S; evs.inactive_timeout = PT15S; evs.join_retrans_period = PT1S; evs.max_install_timeouts = 1; evs.send_window = 4; evs.stats_report_period = PT1M; evs.suspect_timeout = PT5S; evs.user_send_window = 2; evs.view_forget_timeout = PT24H; gcache.dir = /var/lib/mysql/; gcache.keep_pages_size = 0; gcache.mem_size = 0; gcache.name = /var/lib/mysql//galera.cache; gcache.page_size = 128M; gcache.size = 128M; gcs.fc_debug = 0; gcs.fc_factor = 1.0; gcs.fc_limit = 16; gcs.fc_master_slave = no; gcs.max_packet_size = 64500; gcs.max_throttle = 0.25; gcs.recv_q_hard_limit = 9223372036854775807; gcs.recv_q_soft_limit = 0.25; gcs.sync_donor = no; gmcast.segment = 0; gmcast.version = 0; pc.announce_timeout = PT3S; pc.checksum = false; pc.ignore_quorum = false; pc.ignore_sb = false; pc.npvo = false; pc.version = 0; pc.wait_prim = true; pc.wait_prim_timeout = P30S; pc.weight = 1; protonet
2014-04-03 10:13:37 8593 [Note] WSREP: Assign initial position for certification: 27494, protocol version: -1
2014-04-03 10:13:37 8593 [Note] WSREP: Assign initial position for certification: 27494, protocol version: -1
2014-04-03 10:13:37 8593 [Note] WSREP: wsrep_sst_grab()
2014-04-03 10:13:37 8593 [Note] WSREP: Start replication
2014-04-03 10:13:37 8593 [Note] WSREP: Setting initial position to a2a91839-9fb6-11e3-a366-f7e082d5377b:27494
2014-04-03 10:13:37 8593 [Note] WSREP: protonet asio version 0
2014-04-03 10:13:37 8593 [Note] WSREP: Using CRC-32C (optimized) for message checksums.
2014-04-03 10:13:37 8593 [Note] WSREP: backend: asio
2014-04-03 10:13:37 8593 [Note] WSREP: GMCast version 0
2014-04-03 10:13:37 8593 [Note] WSREP: (dbcf1bdd-bb07-11e3-ac06-1b749f0aa051, 'tcp://0.0.0.0:4567') listening at tcp://0.0.0.0:4567
2014-04-03 10:13:37 8593 [Note] WSREP: (dbcf1bdd-bb07-11e3-ac06-1b749f0aa051, 'tcp://0.0.0.0:4567') multicast: , ttl: 1
2014-04-03 10:13:37 8593 [Note] WSREP: EVS version 0
2014-04-03 10:13:37 8593 [Note] WSREP: PC version 0
2014-04-03 10:13:37 8593 [Note] WSREP: gcomm: bootstrapping new group 'Percona-XtraDB-Cluster-L01'
2014-04-03 10:13:37 8593 [Note] WSREP: Node dbcf1bdd-bb07-11e3-ac06-1b749f0aa051 state prim
2014-04-03 10:13:37 8593 [Note] WSREP: view(view_id(PRIM,dbcf1bdd-bb07-11e3-ac06-1b749f0aa051,1) memb {
        dbcf1bdd-bb07-11e3-ac06-1b749f0aa051,0
} joined {
} left {
} partitioned {
})
2014-04-03 10:13:37 8593 [Note] WSREP: discarding pending addr without UUID: tcp://10.10.17.73:4567
2014-04-03 10:13:37 8593 [Note] WSREP: discarding pending addr proto entry 0x190a620
2014-04-03 10:13:37 8593 [Note] WSREP: discarding pending addr without UUID: tcp://10.10.17.74:4567
2014-04-03 10:13:37 8593 [Note] WSREP: discarding pending addr proto entry 0x1912e20
2014-04-03 10:13:37 8593 [Note] WSREP: discarding pending addr without UUID: tcp://10.10.17.75:4567
2014-04-03 10:13:37 8593 [Note] WSREP: discarding pending addr proto entry 0x191b5b0
2014-04-03 10:13:37 8593 [Note] WSREP: gcomm: connected
2014-04-03 10:13:37 8593 [Note] WSREP: Changing maximum packet size to 64500, resulting msg size: 32636
2014-04-03 10:13:37 8593 [Note] WSREP: Shifting CLOSED -> OPEN (TO: 0)
2014-04-03 10:13:37 8593 [Note] WSREP: Opened channel 'Percona-XtraDB-Cluster-L01'
2014-04-03 10:13:37 8593 [Note] WSREP: New COMPONENT: primary = yes, bootstrap = no, my_idx = 0, memb_num = 1
2014-04-03 10:13:37 8593 [Note] WSREP: Waiting for SST to complete.
2014-04-03 10:13:37 8593 [Note] WSREP: STATE_EXCHANGE: sent state UUID: dbcff73a-bb07-11e3-b375-927934c6b84d
2014-04-03 10:13:37 8593 [Note] WSREP: STATE EXCHANGE: sent state msg: dbcff73a-bb07-11e3-b375-927934c6b84d
2014-04-03 10:13:37 8593 [Note] WSREP: STATE EXCHANGE: got state msg: dbcff73a-bb07-11e3-b375-927934c6b84d from 0 (LC1Node1)
2014-04-03 10:13:37 8593 [Note] WSREP: Quorum results:
        version    = 3,
        component  = PRIMARY,
        conf_id    = 0,
        members    = 1/1 (joined/total),
        act_id     = 27494,
        last_appl. = -1,
        protocols  = 0/5/2 (gcs/repl/appl),
        group UUID = a2a91839-9fb6-11e3-a366-f7e082d5377b
2014-04-03 10:13:37 8593 [Note] WSREP: Flow-control interval: [16, 16]
2014-04-03 10:13:37 8593 [Note] WSREP: Restored state OPEN -> JOINED (27494)
2014-04-03 10:13:37 8593 [Note] WSREP: Member 0 (LC1Node1) synced with group.
2014-04-03 10:13:37 8593 [Note] WSREP: Shifting JOINED -> SYNCED (TO: 27494)
2014-04-03 10:13:37 8593 [Note] WSREP: New cluster view: global state: a2a91839-9fb6-11e3-a366-f7e082d5377b:27494, view# 1: Primary, number of nodes: 1, my index: 0, protocol version 2
2014-04-03 10:13:37 8593 [Note] WSREP: SST complete, seqno: 27494
2014-04-03 10:13:37 8593 [Note] Plugin 'FEDERATED' is disabled.
2014-04-03 10:13:37 8593 [Note] InnoDB: The InnoDB memory heap is disabled
2014-04-03 10:13:37 8593 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2014-04-03 10:13:37 8593 [Note] InnoDB: Compressed tables use zlib 1.2.3.4
2014-04-03 10:13:37 8593 [Note] InnoDB: Using Linux native AIO
2014-04-03 10:13:37 8593 [Note] InnoDB: Using CPU crc32 instructions
2014-04-03 10:13:37 8593 [Note] InnoDB: Initializing buffer pool, size = 4.0G
2014-04-03 10:13:38 8593 [Note] InnoDB: Completed initialization of buffer pool
2014-04-03 10:13:38 8593 [Note] InnoDB: Highest supported file format is Barracuda.
2014-04-03 10:13:38 8593 [Note] InnoDB: 128 rollback segment(s) are active.
2014-04-03 10:13:38 8593 [Note] InnoDB: Waiting for purge to start
2014-04-03 10:13:38 8593 [Note] InnoDB:  Percona XtraDB (http://www.percona.com) 5.6.15-rel63.0 started; log sequence number 34187955001
2014-04-03 10:13:38 8593 [Note] WSREP: Initial TC log open: binlog
2014-04-03 10:13:38 8593 [Note] RSA private key file not found: /var/lib/mysql//private_key.pem. Some authentication plugins will not work.
2014-04-03 10:13:38 8593 [Note] RSA public key file not found: /var/lib/mysql//public_key.pem. Some authentication plugins will not work.
2014-04-03 10:13:38 8593 [Note] Server hostname (bind-address): '0.0.0.0'; port: 3306
2014-04-03 10:13:38 8593 [Note]   - '0.0.0.0' resolves to '0.0.0.0';
2014-04-03 10:13:38 8593 [Note] Server socket created on IP: '0.0.0.0'.
2014-04-03 10:13:38 8593 [Note] Event Scheduler: Loaded 0 events
2014-04-03 10:13:38 8593 [Note] /usr/sbin/mysqld: ready for connections.
Version: '5.6.15-63.0-log'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  Percona XtraDB Cluster (GPL), Release 25.5, wsrep_25.5.r4061
2014-04-03 10:13:38 8593 [Note] WSREP: Set WSREPXid for InnoDB:  a2a91839-9fb6-11e3-a366-f7e082d5377b:27494
2014-04-03 10:13:38 8593 [Note] WSREP: inited wsrep sidno 2
Warning: Using a password on the command line interface can be insecure.
2014-04-03 10:13:38 8593 [Note] WSREP: REPL Protocols: 5 (3, 1)
2014-04-03 10:13:38 8593 [Note] WSREP: Assign initial position for certification: 27494, protocol version: 3
2014-04-03 10:13:38 8593 [Note] WSREP: Service thread queue flushed.
2014-04-03 10:13:38 8593 [Note] WSREP: Synchronized with group, ready for connections
Warning: Using a password on the command line interface can be insecure.
2014-04-03 10:13:38 8593 [Note] WSREP: Nobody is waiting for SST.

..... snip ....
2014-04-03 10:48:41 8593 [Note] WSREP: TO BEGIN: 39660, 2
2014-04-03 10:48:41 8593 [Note] WSREP: TO END: 39660, 2 : CREATE TABLE `article_attachment` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT,
  `article_id` bigint(20) NOT NULL,
  `filename` varchar(250) DEFAULT NULL,
  `content_size` varchar(30) DEFAULT NULL,
  `content_type` text,
  `content_id` varchar(250) DEFAULT NULL COMMENT 'bei Upgrade von 2.4 auf 3.0.11 von graz4u hinzugefügt',
  `content_alternative` varchar(50) DEFAULT NULL COMMENT 'bei Upgrade von 2.4 auf 3.0.11 von graz4u hinzugefügt',
  `content` longblob NOT NULL,
  `create_time` datetime NOT NULL,
  `create_by` int(11) NOT NULL,
  `change_time` datetime NOT NULL,
  `change_by` int(11) NOT NULL,
  PRIMARY KEY (`id`),
  KEY `article_attachment_article_id` (`article_id`),
  KEY `create_by` (`create_by`),
  KEY `change_by` (`change_by`)
) ENGINE=InnoDB AUTO_INCREMENT=28344 DEFAULT CHARSET=utf8
2014-04-03 10:48:41 8593 [Note] WSREP: TO END: 39660
2014-04-03 10:48:41 8593 [Note] WSREP: TO BEGIN: -1, 0 : /*!40000 ALTER TABLE `article_attachment` DISABLE KEYS */
2014-04-03 10:48:41 8593 [Note] WSREP: TO BEGIN: 39661, 2
2014-04-03 10:48:41 8593 [Note] WSREP: TO END: 39661, 2 : /*!40000 ALTER TABLE `article_attachment` DISABLE KEYS */
2014-04-03 10:48:41 8593 [Note] WSREP: TO END: 39661
2014-04-03 10:52:01 8593 [Note] WSREP: Created page /var/lib/mysql/gcache.page.000000 of size 134217728 bytes
08:52:05 UTC - mysqld got signal 6 ;
This could be because you hit a bug. It is also possible that this binary
or one of the libraries it was linked against is corrupt, improperly built,
or misconfigured. This error can also be caused by malfunctioning hardware.
We will try our best to scrape up some info that will hopefully help
diagnose the problem, but since we have already crashed,
something is definitely wrong and this may fail.
Please help us make Percona XtraDB Cluster better by reporting any
bugs at https://bugs.launchpad.net/percona-xtradb-cluster

key_buffer_size=268435456
read_buffer_size=268435456
max_used_connections=3
max_threads=252
thread_count=3
connection_count=3
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 198446771 K  bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x7f7340000990
Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong...
stack_bottom = 7f737c1b7a60 thread_stack 0x80000
/usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x8ea56e]
/usr/sbin/mysqld(handle_fatal_signal+0x4a4)[0x68d2f4]
/lib/x86_64-linux-gnu/libpthread.so.0(+0xfcb0)[0x7f7380589cb0]
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x35)[0x7f737f9de425]
/lib/x86_64-linux-gnu/libc.so.6(abort+0x17b)[0x7f737f9e1b8b]
/usr/lib/libgalera_smm.so(_ZN6galera13Certification16purge_for_trx_v3EPNS_9TrxHandleE+0x245)[0x7f737c5139e5]
/usr/lib/libgalera_smm.so(_ZN6galera13Certification16purge_trxs_upto_Elb+0x158)[0x7f737c516c98]
/usr/lib/libgalera_smm.so(_ZN6galera13ReplicatorSMM18process_commit_cutEll+0x85)[0x7f737c544a15]
/usr/lib/libgalera_smm.so(_ZN6galera15GcsActionSource8dispatchEPvRK10gcs_actionRb+0x405)[0x7f737c525755]
/usr/lib/libgalera_smm.so(_ZN6galera15GcsActionSource7processEPvRb+0x5e)[0x7f737c5262ce]
/usr/lib/libgalera_smm.so(_ZN6galera13ReplicatorSMM10async_recvEPv+0x78)[0x7f737c54bff8]
/usr/lib/libgalera_smm.so(galera_recv+0x1e)[0x7f737c55e86e]
/usr/sbin/mysqld[0x5d8561]
/usr/sbin/mysqld(start_wsrep_THD+0x3af)[0x5c0edf]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x7e9a)[0x7f7380581e9a]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7f737fa9c3fd]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (0): is an invalid pointer
Connection ID (thread ID): 1
Status: NOT_KILLED

You may download the Percona XtraDB Cluster operations manual by visiting
http://www.percona.com/software/percona-xtradb-cluster/. You may find information
in the manual which will help you identify the cause of the crash.
140403 10:52:07 mysqld_safe Number of processes running now: 0
140403 10:52:07 mysqld_safe WSREP: not restarting wsrep node automatically
140403 10:52:07 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended


-----------------------------

i will try an other sql export method with:
 --skip-extended-insert --complete-insert --innodb-optimize-keys  
added to mysqldump statement. maybe this will be better....


regards
 axel