Linux /dev/shm

[Chagin Dmitry]

On Tue, Dec 30, 2014 at 07:12:45PM -0600, Jason Bacon wrote:
> On 12/30/14 12:54 PM, Miguel Clara wrote:
> >
> > On 30 December 2014 06:46:40 WET, Chagin Dmitry <dchagin at freebsd.org> wrote:
> >> On Mon, Dec 29, 2014 at 08:49:08PM -0600, Jason Bacon wrote:
> >>> Not sure where else to ask this:
> >>>
> >>> I'm trying to run Atomistix (http://www.quantumwise.com/) on FreeBSD
> >> 10.1.
> >>> The installer runs without a hitch, but I've run into issues with one
> >> of
> >>> the main binaries, vnl_exec.
> >>>
> >>> First problem was a missing libgomp.  linux-c6-devtools installs a
> >>> dangling link in:
> >>>
> >>> /compat/linux/usr/lib/gcc/i686-redhat-linux/4.4.4/libgomp.so
> >>>
> >>> I fixed this by patching the port to include
> >> libgomp-4.4.7-11.el6.i686.rpm.
> >>> That got vnl_exec past all the link errors, but now I'm running into
> >> this:
> >>> Traceback (most recent call last):
> >>>     File "<string>", line 1, in <module>
> >>>     File "./zipdir/NL/__init__.py", line 17, in <module>
> >>>     File "./zipdir/NL/ComputerScienceUtilities/Singleton.py", line
> >> 120,
> >>> in <module>
> >>>     File "./build/lib/python2.7/multiprocessing/__init__.py", line
> >> 183,
> >>> in RLock
> >>>     File "./build/lib/python2.7/multiprocessing/synchronize.py", line
> >>> 172, in __init__
> >>>     File "./build/lib/python2.7/multiprocessing/synchronize.py", line
> >> 75,
> >>> in __init__
> >>> OSError: [Errno 38] Function not implemented
> >>>
> >>>   From what I've found on the Linux forums, this is indicating that
> >> the
> >>> app requires a tmpfs mounted on /dev/shm as an IPC interface. Is
> >> there
> >>> any way to emulate this on FreeBSD?
> >>>
> >> yes, see r218497 commit description. it seems to me that you should
> >> mount tmpfs somewhere
> >
> > You can use devfs.conf for this, add:
> > link /tmp shm
> >
> > Hope that helps,
> > Miguel
> >
> >
> Thanks, this did create a /dev/shm dir linked to /tmp, but I'm still 
> getting the same error.
> 
> FreeBSD manatee.acadix bacon ~ 414: df
> Filesystem     Size    Used   Avail Capacity  Mounted on
> /dev/ada0p3    447G     17G    394G     4%    /
> devfs          1.0K    1.0K      0B   100%    /dev
> procfs         4.0K    4.0K      0B   100%    /proc
> linprocfs      4.0K    4.0K      0B   100% /compat/linux/proc
> tmpfs          5.6G    8.0K    5.6G     0%    /tmp
> FreeBSD manatee.acadix bacon ~ 415: fgrep tmp /etc/fstab /etc/devfs.conf
> /etc/fstab:tmpfs        /tmp            tmpfs        rw 0
> /etc/devfs.conf:link    /tmp    shm
> FreeBSD manatee.acadix bacon ~ 416: ls -al /dev/shm/
> total 16
> drwxrwxrwt   6 root  wheel   320 Dec 30 19:05 ./
> drwxr-xr-x  24 root  wheel  1024 Dec 30 18:58 ../
> drwxrwxrwt   2 root  wheel     0 Dec 30 18:58 .ICE-unix/
> -r--r--r--   1 root  wheel    11 Dec 30 18:58 .X0-lock
> drwxrwxrwt   2 root  wheel    64 Dec 30 19:05 .X11-unix/
> drwxrwxrwt   2 root  wheel     0 Dec 30 18:58 .XIM-unix/
> drwxrwxrwt   2 root  wheel     0 Dec 30 18:58 .font-unix/
> FreeBSD manatee.acadix bacon ~ 417: QuantumWise/VNL-ATK-2014.1/bin/vnl
> Traceback (most recent call last):
>    File "<string>", line 1, in <module>
>    File "./zipdir/NL/__init__.py", line 17, in <module>
>    File "./zipdir/NL/ComputerScienceUtilities/Singleton.py", line 120, 
> in <module>
>    File "./build/lib/python2.7/multiprocessing/__init__.py", line 183, 
> in RLock
>    File "./build/lib/python2.7/multiprocessing/synchronize.py", line 
> 172, in __init__
>    File "./build/lib/python2.7/multiprocessing/synchronize.py", line 75, 
> in __init__
> OSError: [Errno 38] Function not implemented
> 
> I'll keep tinkering...
> 
ok, try to debug. run ktrace -d -i /path/to/app, then kdump -HAR > app.log

-- 
Have fun!
chd