[developers] Mysterious Japanese grammar hang

[CompLing Help (David Brodbeck)]

To amplify on those NFS changes, what happened was I shifted all home  
directories to a new file server.  In doing so the mount point changed  
from /home to /home2 (so that I could move home directories one at a  
time and minimize disruption to users) and users' home directory  
settings were updated accordingly.  I'm not entirely clear on why this  
broke your soft links, since I have examples of other ones that  
survived intact, but it's interesting.  We've also switched from NFSv3  
to NFSv4, because we were bumping into the 16 group per user limit on  
NFSv3.


On Jul 23, 2009, at 9:17 AM, W.P. McNeill (UW) wrote:

> More specifics on this bug:
>
> I used to have the Japanese grammar under the following path:
>
> ~/corpora/Tanaka/tc-070707/jp070707
>
> This used to be fine, but suddenly it stopped working in the manner  
> described upthread.
>
> Francis fixed this problem by moving the directory to:
>
> ~/jp070707
>
> It is not clear why this should have fixed the problem.  The one  
> interesting thing about the file system is that the corpora  
> directory on my machine contains many softlinks:
>
> $ ll ~/corpora/
> total 5
> lrwxrwxrwx 1 billmcn billmcn 36 Jul 22 17:23 LDC-parses -> /corpora/ 
> LDC/LDC99T42/RAW/parsed/mrg
> drwxr-xr-x 3 billmcn billmcn  3 Feb 17 17:14 Tanaka
> lrwxrwxrwx 1 billmcn billmcn 22 Jul 22 17:23 treebank-2 -> /corpora/ 
> LDC/LDC95T07/
> lrwxrwxrwx 1 billmcn billmcn 21 Jul 22 17:23 treebank-3 -> /corpora/ 
> LDC/LDC99T42
> lrwxrwxrwx 1 billmcn billmcn 39 Jul 22 17:23 wsj -> /corpora/LDC/ 
> LDC95T07/RAW/combined/wsj/
>
> This targets of these softlinks exist, but the softlinks were  
> broken, presumably because of some recent NFS changes on our system.
>
> This is not a problem with the Japanese grammar or DELPH-IN tools,  
> but it may be useful to keep this in mind as a way in which NFS  
> problems may hurt the functioning of these tools.
>
> On Tue, Jul 21, 2009 at 4:20 PM, Francis Bond <bond at ieee.org> wrote:
> G'day,
>
> 2009/7/15 W.P. McNeill (UW) <billmcn at u.washington.edu>:
> > It hangs interactively as well.  The English grammar does not have  
> these
> > problems.
>
> The problem appears to be disk related ---  after moving the grammar
> to a local disk it loads fine.  I think the villain was nfs.
>
>
> --
> Francis Bond <http://www3.ntu.edu.sg/home/fcbond/>
> Division of Linguistics and Multilingual Studies
> Nanyang Technological University
>
>
>
> -- 
> W.P. McNeill
> http://staff.washington.edu/billmcn/index.shtml
> Sent from Barcelona, Spain

-- 

CompLing Help (David Brodbeck)
linghelp at u.washington.edu




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