2582445 - HANA Log backup are growing to 16GB file size

There is no operation or change in the system, but the Log backup are growing to 16BGB file size.

INDEXSERVER ALERT
[30950]{-1}[-1/-1] 2017-08-25 05:15:15.263747 w FileIO           FileSystem.cpp(00080) : Unsupported file system "ext4" for "/usr/sap/HSQ/HDB00/backup/log/DB_HSQ/"

[30953]{-1}[-1/-1] 2017-08-25 05:15:17.232568 e FileIO           LocalFileCallback.cpp(00331) : ERROR in async. file transfer: exception  1: no.2000008  (Basis/IO/FileAccess/impl/LocalFileCompletionThread.cpp:287)

    Error during asynchronous file transfer (io_getevents), rc=28: No space left on device; $fileCallback$=[W] , buffer= 0x00007f21338f0000, offset= 402657280, size= 0/134217728, file= "<root>/.log_backup_3_0_67916681216_67925611776.1503609315262" ((open, mode= W, access= rw-r-----, flags= DIRECT|TRUNCATE|MULTI_WRITERS|UNALIGNED_SIZE), factory= (root= "/usr/sap/HSQ/HDB00/backup/log/DB_HSQ/" (access= rw-r-----, flags= AUTOCREATE_PATH|DISKFULL_ERROR, usage= LOG_BACKUP, fs= UNSUPPORTED (ext4), config= (async_write_submit_active=on,async_write_submit_blocks=all,async_read_submit=on,num_submit_queues=1,num_completion_queues=1,size_kernel_io_queue=512,max_parallel_io_requests=64,min_submit_batch_size=16,max_submit_batch_size=64))) {shortRetries= 0, fullRetries= 0 (0/10)}

SAP HANA DB 2.0

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