Backup fatal issue - Mailing list pgsql-general

Hi there,
I have some problems in a postgres cluster when I try to execute a backup.
This is the log of entire operation:

LOG:  connection received: host=91.121.182.110 port=54957
LOG:  connection authorized: user=postgres database=postgres
LOG:  statement: BEGIN
LOG:  statement: SET application_name TO barman
LOG:  statement: SHOW "data_directory"
LOG:  connection received: host=91.121.182.110 port=54958
LOG:  connection authorized: user=postgres database=postgres
LOG:  statement: BEGIN
LOG:  statement: SET application_name TO barman
LOG:  statement: SELECT name, setting FROM pg_settings WHERE name IN
('config_file', 'hba_file', 'ident_file')
LOG:  connection received: host=91.121.182.110 port=54959
LOG:  connection authorized: user=postgres database=postgres
LOG:  statement: BEGIN
LOG:  statement: SET application_name TO barman
LOG:  statement: SELECT spcname, oid, pg_tablespace_location(oid) AS
spclocation FROM pg_tablespace WHERE pg_tablespace_location(oid) != ''
LOG:  connection received: host=91.121.182.110 port=54960
LOG:  connection authorized: user=postgres database=postgres
LOG:  statement: BEGIN
LOG:  statement: SET application_name TO barman
LOG:  statement: select pg_is_in_recovery()
LOG:  statement: SELECT xlog_loc, (pg_xlogfile_name_offset(xlog_loc)).*,
now() FROM pg_start_backup('Barman backup redevodb_citrix
20150717T091702',false) as xlog_loc
LOG:  connection received: host=91.121.182.110 port=54988
FATAL:  semctl(983046, 3, SETVAL, 0) failed: Invalid argument
LOG:  server process (PID 1756) exited with exit code 1
LOG:  terminating any other active server processes
WARNING:  terminating connection because of crash of another server process
DETAIL:  The postmaster has commanded this server process to roll back the
current transaction and exit, because another server process exited
abnormally and possibly corrupted shared memory.
HINT:  In a moment you should be able to reconnect to the database and
repeat your command.
LOG:  all server processes terminated; reinitializing
LOG:  could not remove shared memory segment "/PostgreSQL.1804289383": No
such file or directory
LOG:  semctl(786432, 0, IPC_RMID, ...) failed: Invalid argument
LOG:  semctl(819201, 0, IPC_RMID, ...) failed: Invalid argument
LOG:  semctl(851970, 0, IPC_RMID, ...) failed: Invalid argument
LOG:  semctl(884739, 0, IPC_RMID, ...) failed: Invalid argument
LOG:  semctl(917508, 0, IPC_RMID, ...) failed: Invalid argument
LOG:  semctl(950277, 0, IPC_RMID, ...) failed: Invalid argument
LOG:  semctl(983046, 0, IPC_RMID, ...) failed: Invalid argument
LOG:  semctl(1015815, 0, IPC_RMID, ...) failed: Invalid argument
LOG:  database system was interrupted; last known up at 2015-07-17 09:18:10
CEST
LOG:  redo starts at 16/9F000028
LOG:  record with zero length at 16/9F000100
LOG:  redo done at 16/9F0000C8
LOG:  MultiXact member wraparound protections are now enabled
LOG:  database system is ready to accept connections
LOG:  autovacuum launcher started

Can anyone help me to identify and to resolve this inconvenience?

Thanks in advance.

Meph



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