search for: nfs_write

...system messages are different. On the C7 server there is a series of messages of the form 'task blocked for >120 seconds' with a stack trace. There is one for each of the following: nfsd, chmod_job, kworker, pure_ftpd, image_mover In each of the stack traces they are blocked on either nfs_write or nfs_flush And on the C6 client there is a similar blocked message for the ftp job, blocked on nfs_flush, then the bad sequence number message I had seen before, and at that point the ftp_job hung.

On Fri, Oct 21, 2016 at 11:42 AM, <m.roth at 5-cent.us> wrote: > Larry Martell wrote: >> On Fri, Oct 21, 2016 at 11:21 AM, <m.roth at 5-cent.us> wrote: >>> Larry Martell wrote: >>>> We have 1 system ruining Centos7 that is the NFS server. There are 50 >>>> external machines that FTP files to this server fairly continuously. >>>>

FYI, I posted a blog a few days ago about a DTrace provider for NFS that is currently in development: http://blogs.sun.com/roller/page/samf?entry=a_dtrace_provider_for_nfs Let''s discuss any questions, comments, etc. here. I also advertised this on nfs-discuss at opensolaris.org. Naturally, I would expect the discussion here to be more on the specifics of DTrace, and the