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

Duplicate — Mon, 21 Apr 2014 13:58:29 +0000

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>

Whamcloud Community JIRA

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