On 1/29/2012 9:28 PM, Paul H. Hargrove wrote:
[snip]
I also had to disable the opal_path_nfs test again on the POWER6
machine, even w/ the linux->__linux__ change.
I will report on that when/if I can determine the cause.
-Paul
Following up on the opal_path_nfs test failures I reported when testing
xlc-[789].0:
I added tracing to print errno information for any failing statfs()
calls in opal/util/path.c.
The following is what then see from "make check -C test/util":
Making check in util
make[2]: Entering directory `/home/hargrove/openmpi-1.4.5rc2/test/util'
make opal_path_nfs
make[3]: Entering directory `/home/hargrove/openmpi-1.4.5rc2/test/util'
/bin/sh ../../libtool --tag=CC --mode=link gcc -O3 -DNDEBUG
-finline-functions -fno-strict-aliasing -pthread -export-dynamic -o
opal_path_nfs opal_path_nfs.o ../../opal/libopen-pal.la
../../test/support/libsupport.a -lnsl -lutil -lm
libtool: link: gcc -O3 -DNDEBUG -finline-functions
-fno-strict-aliasing -pthread -o .libs/opal_path_nfs opal_path_nfs.o
-Wl,--export-dynamic ../../opal/.libs/libopen-pal.so -ldl
../../test/support/libsupport.a -lnsl -lutil -lm -pthread -Wl,-rpath
-Wl,/home/hargrove/openmpi-1.4.5rc2/INST/lib
make[3]: Leaving directory `/home/hargrove/openmpi-1.4.5rc2/test/util'
make check-TESTS
make[3]: Entering directory `/home/hargrove/openmpi-1.4.5rc2/test/util'
@ statfs("/projects") failed (14:Bad address)
@ statfs("") failed (2:No such file or directory)
Failure : Mismatch: input "/projects", expected:1 got:0
SUPPORT: OMPI Test failed: opal_path_nfs() (1 of 16 failed)
FAIL: opal_path_nfs
========================================================
1 of 1 test failed
Please report to http://www.open-mpi.org/community/help/
========================================================
As you can see, the statfs() call for the "/projects" mount point failed
with errno=EFAULT.
I cannot think of any sane way to account for such an error return.
Use of strace confirms:
statfs("/projects", 0xffffd8e0) = -1 EFAULT (Bad address)
while other mount points are fine, such as:
statfs("/opt/shared", {f_type="NFS_SUPER_MAGIC", f_bsize=8192,
f_blocks=131068, f_bfree=50166, f_bavail=50166, f_files=0, f_ffree=0,
f_fsid={0, 0}, f_namelen=255, f_frsize=8192}) = 0
Not sure what one could expect opal_path_nfs() to do in the face of such
an odd failure.
If anybody has suggestions for follow-up, let me know.
And, yes, /projects *is* an NFS mount.
-Paul
--
Paul H. Hargrove phhargr...@lbl.gov
Future Technologies Group
HPC Research Department Tel: +1-510-495-2352
Lawrence Berkeley National Laboratory Fax: +1-510-486-6900
