[Gluster-devel] Fail when calling syncop_create

[Gustavo Bervian Brand]

Hello,

  I'm implementing a translator and at the moment I'm trying to "cache" at
the local node's disk the files read from other node.
  When reading a file from a certain node, at the file open function it's
added an extended metadata at the original file with info about where this
file (or part of it) is copied, calling syncop_setxattr to the proper child
to do it.
  So, once open is done the readv comes and if this file was not already
read/cached, at the readv_cbk (before stack unwind) I am trying to create a
local file with the content got from the original node.

  For that purpose, I am using syncop_create / setattr / write. But the
syncop_create is always failing with Stale NFS file handle error.
  I tried to copy the same gfid and pargfid of the loc_t used at open
function (saved), it didn't work, tried to zero them, nothing... and
manipulated all the variables used at the syncop_create call... but nothing
worked to get a success return from syncop_create.

  Is there some requirement to call syncop_create, or a good way to track
the exact reason for this failure (I could see it's not even reaching the
client_create() call through gdb)? I am using the code from the master
branch of 1 week ago. Any comment is welcome.


Part of the log:

[2012-09-09 17:04:16.357875] I [gbfs_t.c:361:gbfs_open_cbk] 0-gbfs-test:
entering gbfs_open_cbk function
[2012-09-09 17:04:16.358026] I [gbfs_t.c:169:gbfs_readv] 0-gbfs-test:
entering gbfs_readv function
[2012-09-09 17:04:16.358156] I [gbfs_t.c:46:gbfs_readv_cbk] 0-gbfs-test:
entering gbfs_readv_cbk function
[2012-09-09 17:04:16.358192] I [gbfs_t.c:132:gbfs_readv_cbk] 0-gbfs-test:
failed to create /35a710dd on examplevol-client-0 (Stale NFS file handle)

Thanks in advance,
Gustavo Bervian Brand
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