Test format verify gets EBUSY return

  29: file, variable-length column-store

t: session.verify: file:wt: post-ops verify: Device or resource busy

############################################

#  RUN PARAMETERS

############################################

auto_throttle=1

firstfit=0

bitcnt=1

bloom=1

bloom_bit_count=7

bloom_hash_count=10

bloom_oldest=0

cache=3

checkpoints=1

checksum=uncompressed

chunk_size=6

compaction=1

compression=none

data_extend=0

data_source=file

delete_pct=0

dictionary=0

evict_max=1

file_type=row-store

backups=1

huffman_key=0

huffman_value=0

insert_pct=20

internal_key_truncation=0

internal_page_max=13

isolation=random

key_gap=10

key_max=82

key_min=24

leak_memory=0

leaf_page_max=17

logging=0

lsm_worker_threads=3

merge_max=8

mmap=1

ops=100000

prefix_compression=1

prefix_compression_min=7

repeat_data_pct=87

reverse=0

rows=100000

runs=100

split_pct=42

statistics=0

threads=1

value_max=3167

value_min=16

wiredtiger_config=

write_pct=24

############################################