F2G bug

You've heard of the Y2K bug, but for those that don't know yet, the F2G bug is
F2G = Filesize 2 GB.
That is, a file that is over 2 Gigabytes in size.

F2G bug @ EMBL

Here's a real life F2G bug in action here at EMBL, Heidelberg.
We have an F2G file which causes this F2G problem... Technically, it was mounted on an NFS filesystem using NFS2 on some machines and NFS3 on others.

an OSF 4.0 alpha

% ls -l /data/emnew/emnew.dat
-rw-r--r--   1 database dbupdate 2282881024 May 13 23:13 /data/emnew/emnew.dat
but on other machines....

another OSF 4.0 alpha

% ls -l /data/emnew/emnew.dat
/data/emnew/emnew.dat not found
failed with NFS2, worked with NFS3

an IRIX 6.4 machine

% ls -l /data/emnew/emnew.dat
color_ls: /data/emnew/emnew.dat: I/O error
failed with NFS2, worked with NFS3

an IRIX 6.5 machine

failed with NFS2, worked with NFS3

another IRIX 6.5 machine

worked with NFS3

Linux

linux is OK, but see below!

x86 (PC) Linux

The intel linux platform cannot handle it.

Alpha Linux

The Alpha linux port can. but just when you thought life was OK....

other software

on any of the NFS3 mounted SGIs above 
% ls -l /data5/emnew/est_emnew 
-rw-r--r--   1 database dbupdate 212173637 May 14 00:36 /data5/emnew/est_emnew

% gtail /data5/emnew/est_emnew 
GGGTTTTGGAAGCATGAGGACAAACTCAAAAAGCTGACTTTTTTTCCGTAGCAGACTTTA
AATTAAATTGGGTTTTTTGCTCTAGGAGAAAAGATTCCTTCCTACTGATACCTGCACCGA
TACTCACCGATACTCATATGCAGCAAGGTCAGAATTTTTTTTTTTAAACATTCTTTGATT
AATGCTGAGAGCTGCAGCATGTTTAGACAGGGTCATGACCCCAGGCATCCATTTAATCAA
ATTTCTCTGCTGCTTGTCCCAGTGGAGCCATCACAACAAGAAACTCTCTCAATGAAAATA
AAAAACGAAAAGAAAAAGAAAAGGAAAAAAATGCACACTTCACATCTCACATTGTTTACA
CGCTGTTAAGTAATTATTTCACTCTTCGACCCCCACTGGCCGTCAACAGACAAGTCACCT
CCTTGGAGATTCTGAAAAGCTTATTCAGCTACATATAATTCATTTTGTTTCTTTCCTTCA
TTGTGCAGCTAACTGCTTAGCTTAAAGACTTCTTTGTGAATAGTTAAGTACATGGTGTCC
ATTCTAATGGCTTCC

% gtail /data/emnew/emnew.dat
gtail: /data/emnew/emnew.dat: Value too large for defined data type

F2G Audit

A case for an F2G audit!
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