On 09/28/2010 06:26 PM, Samuel Kidman wrote: > > > On Tue, Sep 28, 2010 at 10:07 PM, Simon Andrews > <simon.andr...@bbsrc.ac.uk <mailto:simon.andr...@bbsrc.ac.uk>> wrote: > > I have a fedora 13 box on which I have a remote mounted nfs share > over a > fairly slow (10Mb/s) link. I'm then transferring data onto this share > from a different machine using scp. > > The problem is that after scp reports that it's 100% complete the > program will hang for ~20 mins before it will move on to another file. > At this point it can't be killed. > > It looks like the nfs daemon is caching write data (around 2GB of it) > which lets scp think its finished when actually there's loads of data > sitting in a write buffer. The hanging is presumably the time it > takes > to flush the buffer (there is a process called nfsiod which is active > during this time and df shows data is still being written). > > Does anyone know how to either make this buffer smaller, or get rid of > it all together so the scp can accruately report on its progress? > > Thanks > > Simon. > Hey! Simon,
you could also re-write scp to open the file descriptor with O_SYNC to force all writes to be synchronous, and you will obviate the need to call fsync(). -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
