[Bug 385388] [NEW] jpilot has locking problems over nfs4 and bind mount

[gpk]

Public bug reported:

Binary package hint: jpilot

I run jpilot (or I try to!) over a nfs4 mount followed by a bind mount.
I.e. the .jpilot directory is bind mounted from /import/big and
/import/big is nfs4 mounted from a Debian linux machine.

I get lots of errors that seem to be related to locking.
This may be related to http://code.djangoproject.com/ticket/8403
which seems to refer to a change in the semantics of flock().   Apparently,
flock() over NFS raises an error.


$ jpilot
locking jpilot.rc failed: Input/output error
locking jpilot.plugins failed: Input/output error
locking ToDoDB.pdb failed: Input/output error
Error opening file: ToDoDB.pdb
locking DatebookDB.pdb failed: Input/output error
Error opening file: DatebookDB.pdb
locking DatebookDB.pdb failed: Input/output error
Error opening file: DatebookDB.pdb
locking jpilot.alarms failed: Input/output error
Unable to open jpilot.alarms file
locking DatebookDB.pc3 failed: Input/output error
locking AddressDB.pc3 failed: Input/output error
locking ToDoDB.pc3 failed: Input/output error
locking MemoDB.pc3 failed: Input/output error
locking Memo32DB.pc3 failed: Input/output error
$ 

However, if I look at the .jpilot directory, it looks OK:

$ ls -l .jpilot
total 352
-rw-rw---- 1 gpk     home  24180 2009-06-03 22:01 AddressDB.pc3
-rw-rw---- 1 pribble home 103934 2008-03-01 16:10 AddressDB.pdb
-rw-rw---- 1 gpk     home    378 1970-01-01 01:00 CalendarDB-PDat.pdb
-rw-rw---- 1 gpk     home   1172 1970-01-01 01:00 ContactsDB-PAdd.pdb
-rw-rw---- 1 gpk     home   1335 2008-04-28 20:41 DatebookDB.pc3
-rw-rw---- 1 gpk     home 138402 2007-04-07 12:42 DatebookDB.pdb
-rw-rw---- 1 gpk     home      0 2008-06-15 11:36 ExpenseDB.pc3
-rw-rw---- 1 pribble home    473 1970-01-01 01:00 ExpenseDB.pdb
-rw-rw---- 1 pribble home    126 2009-06-09 21:42 jpilot.alarms
-rw-rw---- 1 gpk     home    664 2009-06-09 22:40 jpilot.log
...

Permissions are OK.   I can cat the files and I can edit/save jpilot.rc
with an editor.




$ lsb_release -rd
Description:	Ubuntu 9.04
Release:	9.04
$ 
$ apt-cache policy jpilot
jpilot:
  Installed: 1.6.0-1
  Candidate: 1.6.0-1
  Version table:
 *** 1.6.0-1 0
        500 http://gb.archive.ubuntu.com jaunty/universe Packages
        100 /var/lib/dpkg/status
$

** Affects: jpilot (Ubuntu)
     Importance: Undecided
         Status: New

-- 
jpilot has locking problems over nfs4 and bind mount
https://bugs.launchpad.net/bugs/385388
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