2597141 - HANA Data Backup error "Could not back up database"

All backups end with error message: Could not back up database XX2. All tenants affected.

Backup.log
2018-01-25T11:26:17+02:00 P166371 1612ca3a237 ERROR LOGBCKUP state of service: indexserver, xx2xx324:30040, volume: 2, BackupLogError
2018-01-25T11:26:17+02:00 P166371 1612ca3a237 ERROR LOGBCKUP state of service: indexserver, xx2xx324:30040, volume: 2, Unexpected end of backup, expected amount of data is 4096 but transferred 0

Backint.log
exception:
exception 1: no.110507 (Backup/Destination/Backint/impl/BackupDestBackint_Executor.cpp:230)
Backint exited with exit code 2 instead of 0. console output: IBM Spectrum Protect for Enterprise Resource Planning Data Protection for SAP HANA(R) - Version 8, Release 1, Modification 0.0 for Linux on POWER 64-bit - Build: 721 compiled on Oct 14 2016 Licensed Materials - Property of IBM. (c) Copyright IBM Corporation 1996, 2016 All Rights Reserved. #SOFTWAREID "backint 1.05" "IBM Spectrum Protect for Enterprise Resource Planning - Data Protection for SAP HANA(R) 8.1.0.0" BKI2001E: Socket error while connecting to ProLE at 57323@xx2xx324: Connection refused.

2018-01-25 11:26:16.000 backint started:
command: /usr/sap/XX2/SYS/global/hdb/opt/hdbbackint -f backup -p /usr/sap/XX2/SYS/global/hdb/opt/hdbconfig/initXX2_log.utl -i /var/tmp/hdbbackint_XX2.EIJ3qd -o /var/tmp/hdbbackint_XX2.f3t5dp -u XX2 -s 1516872376887 -c 1 -l LOG
pid: 278194
input:
#SOFTWAREID "backint 1.04" "HANA HDB server 1.00.122.12.1502962396"
#PIPE "/usr/sap/XX2/SYS/global/hdb/backint/DB_AA4/log_backup_2_0_1180067264_1180161152"
#PIPE "/usr/sap/XX2/SYS/global/hdb/backint/DB_AA/log_backup_2_0_1180161152_1196938368"
#PIPE "/usr/sap/XX2/SYS/global/hdb/backint/DB_AA4/log_backup_2_0_1196938368_1213715584"

Indexserver
[24754]{-1}[-1/-1] 2018-01-08 14:58:10.762752 e Backup BackupExe_LogBackup.cpp(00569) : finished backup from [BackupSource: [LOGGING] Version 2 @ 0x00007ffd770c53a0] into [BackupDestination: [BACKINT][/usr/sap/XX2/SYS/global/hdb/backint/DB_AA4/log_backup_2_0_1003669248_1003777344] Version 6 @ 0x00007ff5bc41e980] with error: exception 1: no.110013 (Backup/Destination/impl/BackupDest_DestCallback.cpp:155)
Unexpected end of backup, expected amount of data is 4096 but transferred 0
exception throw location:
1: 0x00007fff71550118 in Backup::BackupDest_DestCallback::wait(unsigned long, bool)+0x368 at BackupDest_DestCallback.cpp:153 (libhdbbackup.so)
2: 0x00007fff7153d08c in Backup::BackupDest_DestinationSPI::sendSynchronous(void const*, unsigned long)+0x20c at BackupDest_DestinationSPI.cpp:226 (libhdbbackup.so)
3: 0x00007fff7154bcd8 in Backup::BackupDest_DestinationWriter::prepareDataCopy()+0x98 at BackupDest_DestinationWriter.cpp:310 (libhdbbackup.so)
4: 0x00007fff716d0588 in Backup::BackupSrc_Logging::executeSave(Backup::BackupDest_Destination&, Backup::Backup_Progress&)+0x78 at BackupSrc_Logging.cpp:65 (libhdbbackup.so)
5: 0x00007fff71534148 in Backup::BackupExe_LogBackupImpl::LogBackupThread::run(void*&)+0x1198 at BackupExe_LogBackup.cpp:556 (libhdbbackup.so)
6: 0x00007fff5b02fdec in Execution::Thread::staticMainImp(void**)+0x83c at TraceContext.hpp:1205 (libhdbbasis.so)
7: 0x00007fff5b031a90 in Execution::Thread::staticMain(void*)+0x30 at ThreadMain.cpp:26 (libhdbbasis.so)
8: 0x00007fff5b02aea0 in Execution::pthreadFunctionWrapper(void*)+0x110 at Thread.cpp:1036 (libhdbbasis.so)
9: 0x00007fff5a9fc6cc in start_thread+0x10c (libpthread.so.0)
[24767]{-1}[-1/-1] 2018-01-08 14:58:10.762946 e Stream PipeChannelManager.cpp(00462) : write to pipe got errno 9 (Bad file descriptor)
[24754]{-1}[-1/-1] 2018-01-08 14:58:10.763044 e Logger BackupHandlerImpl.cpp(00452) : Error during log segment backup: exception 1: no.110013 (Backup/Destination/impl/BackupDest_DestCallback.cpp:155)
Unexpected end of backup, expected amount of data is 4096 but transferred 0

SAP HANA 1.0

Backup.log, Backint.log, Indexserver, SAP HANA 1.0, backint related issue, BKI2001E: Socket error, resolution, IBM support, exception 1: no.110013, SAP Note#24272725, SAP Note#2243921 , KBA , HAN-DB-BAC , SAP HANA Backup & Recovery , Problem