[LU-3518] liblustreapi.a not forward compatible between 2.1.5 and 2.3.0 (maybe others)

• Type: Bug
• Resolution: Duplicate
• Priority: Minor
• Affects Version/s: Lustre 2.3.0, Lustre 2.1.5
• Labels: mn1

Environment

client215[501]~> uname -a
Linux client215 2.6.32.54-0.3.1.20120223-nasa #1 SMP Fri Feb 24 00:06:41 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

client215[503]~> cat /etc/SuSE-release
SUSE Linux Enterprise Server 11 (x86_64)
VERSION = 11
PATCHLEVEL = 1

client215[504]~> rpm -qf /usr/lib64/liblustreapi.a
lustre-client-2.1.5-1nasC_ofed154_2.6.32.54_0.3.1.20120223_nasa


client230[615]~> uname -a
Linux client230 3.0.74-0.6.6.2.20130516-nasuv #1 SMP Fri May 17 02:07:25 UTC 2013 (395d734) x86_64 x86_64 x86_64 GNU/Linux

client230[616]~> cat /etc/SuSE-release
SUSE Linux Enterprise Server 11 (x86_64)
VERSION = 11
PATCHLEVEL = 2

client230[617]~> rpm -qf /usr/lib64/liblustreapi.a
lustre-client-2.3.0-3nasC_ofed154_3.0.74_0.6.6.2.20130516_nasuv

• Severity: 3
• Assignee: Hongchao Zhang
• Reporter: Paul Kolano (Inactive)

Description

Binaries utilizing liblustreapi.a compiled with 2.1.5 do not function
properly with 2.3.0. This may affect other versions as well, but these
are what we're currently running.

Here is a simple reproducer (call bug.c):

#include <stdio.h>
#include <lustre/liblustreapi.h>

int main(int argc, char *argv[]) {
// set stripe count to 2 with default stripe size
if (llapi_file_create(argv[1], 0, -1, 2, 0))

{ perror("problem"); }

}

Compile as follows:

gcc bug.c -Wl,-Bstatic -llustreapi -Wl,-Bdynamic

Give a non-existing file name on lustre as an argument. When you
compile on a 2.1.5 system, it works fine on 2.1.5 systems:

client215[556]/nobackupp2/user1> ~/a.out aaa
client215[557]/nobackupp2/user1>

but gives a bogus error on 2.3.0 systems:

client230[590]/nobackupp2/pkolano> ~/a.out bbb
error on ioctl 0x4008669a for 'bbb' (3): stripe already set
problem: File exists

When you compile on a 2.3.0 system, it works fine on both:

client215[568]/nobackupp2/user1> ~/a.out aaa
client215[569]/nobackupp2/user1>

client230[602]/nobackupp2/user1> ~/a.out bbb
client230[603]/nobackupp2/user1>

Issue Links

• duplicates: LU-812 Support for Linux 3.0 kernels