fail to build a large index

[nashanghenzan]

(mpa) [root@centos7-02-66b664b9d9-gz85w index]# bowtie2-build chocophlan_database.ffn chocophlan_database.bt2 --large-index

Settings:
  Output files: "chocophlan_database.bt2.*.bt2l"
  Line rate: 7 (line is 128 bytes)
  Lines per side: 1 (side is 128 bytes)
  Offset rate: 4 (one in 16)
  FTable chars: 10
  Strings: unpacked
  Max bucket size: default
  Max bucket size, sqrt multiplier: default
  Max bucket size, len divisor: 4
  Difference-cover sample period: 4000
  Endianness: little
  Actual local endianness: little
  Sanity checking: disabled
  Assertions: disabled
  Random seed: 0
  Sizeofs: void*:8, int:4, long:8, size_t:8
Input files DNA, FASTA:
  chocophlan_database.ffn
Building a LARGE index
Reading reference sizes
  Time reading reference sizes: 00:20:23
Calculating joined length
Writing header
Reserving space for joined string
Joining reference sequences

(mpa) [root@centos7-02-66b664b9d9-gz85w index]# ls

chocophlan_database.bt2.1.bt2l.tmp  chocophlan_database.bt2.3.bt2l.tmp  chocophlan_database.ffn
chocophlan_database.bt2.2.bt2l.tmp  chocophlan_database.bt2.4.bt2l.tmp