After putting my think cap on: Try first what Raj is suggesting. After all, the popen driver is an exotic feature and it may not be desirable to use it in all environments, since it lets you execute (white-listed) commands on the server. In the community I mentioned we had special firewall constraints which made us using it, and it works very well.
I won't write things up unless you come back. Martin Raj Kettimuthu wrote: > Hi, > Can you test this with non-threaded flavor of the GridFTP server and check > whether the problem goes away? > Instructions on how to switch between threaded and non-threaded flavors > is available at > http://www.globus.org/toolkit/docs/4.2/4.2.1/data/gridftp/admin/#gridftp-admin-installing-threaded > > > Raj > > On Feb 18, 2010, at 5:24 PM, Arn wrote: > >> Hi, >> >> We've set up GridFTP (4.2.1) on several nodes across our WAN (2 sites) >> using the quickstart documentation. >> >> We are not seeing any issues while transferring large files but when >> we do a batch transfer (globus-url-copy) with lots of small files >> (LOSF) then we have problems. >> The debug/verbose output is the following : >> ---------------------------------------------------- >> >> error transferring: >> globus_ftp_client: the server responded with an error >> 500 500-Command failed. : globus_l_gfs_file_open failed. >> 500-globus_xio: Unable to open file /path/to/data/losf/small0aAEq8QsYSCJ >> 500-globus_xio: System error in open: Permission denied >> 500-globus_xio: A system call failed: Permission denied >> 500 End. >> >> error: There was an error with one or more transfers. >> --------------------------------------------------- >> >> Note, that this error is intermittent as the same transfer works >> sometimes. >> >> We would appreciate some advice info on what could be the problem and >> also how to investigate further. >> >> Thanks >> Arn >
