FIO Segfault

From: James Ray <j.ray_at_qmul.ac.uk>
Date: Thu, 31 Jul 2008 17:57:43 +0100

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Desc: FIO Segfaults with specific config (lots of files maybe?)
Env: CentOS 5.2.
Version: Git HEAD
Reproduce: Run with following config:
[imap]
size=4G
filesize=4-1024k
directory=/mnt/store
fadvise_hint=0
blocksize=65k
direct=0
numjobs=9
nrfiles=3000
exec_prerun=echo 3 > /proc/sys/vm/drop_caches
file_service_type=random
rw=randread

~/fio.git/fio --debug=all ./JOB.fio2

Last part of debug logs:
file 18633 add file imap.4.443
file 18633 resize file array to 444 files
file 18633 file 0x2b39a59b8d68 "/mnt/store/imap.4.443" added at 443
file 18633 add file imap.4.444
file 18633 resize file array to 445 files
file 18633 file 0x2b39a59b8e48 "/mnt/store/imap.4.444" added at 444
file 18633 add file imap.4.445
file 18633 resize file array to 446 files
file 18633 file 0x2b39a59b8f28 "/mnt/store/imap.4.445" added at 445
file 18633 add file imap.4.446
Segmentation fault

- --
James Ray. <j.ray_at_qmul.ac.uk>
Computing Services
Queen Mary, University of London
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Received on Thu Jul 31 2008 - 18:57:43 CEST

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