08-17-2013
Quote:
Originally Posted by
RudiC
Why do you suspect a process holding a file open when your list is empty?
If there are open files, there must be process(es) on the local side holding the files open; it might be children (or so) of the NFS daemon. Did you check the NFS log files?
I suspect a process holding a file open because the directory has a .nfs################# (the #'s are random numbers) file in it and won't let me delete it because the file is in use.
My understanding was that using the lsof or fuser commands would let me see what process has that directory/file open.
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SRV(3) Library Functions Manual SRV(3)
NAME
srv - server registry
SYNOPSIS
bind #s /srv
#s/service1
#s/service2
...
DESCRIPTION
The srv device provides a one-level directory holding already-open channels to services. In effect, srv is a bulletin board on which pro-
cesses may post open file descriptors to make them available to other processes.
To install a channel, create a new file such as /srv/myserv and then write a text string (suitable for strtoul; see atof(2)) giving the
file descriptor number of an open file. Any process may then open /srv/myserv to acquire another reference to the open file that was reg-
istered.
An entry in srv holds a reference to the associated file even if no process has the file open. Removing the file from /srv releases that
reference.
It is an error to write more than one number into a server file, or to create a file with a name that is already being used.
EXAMPLE
To drop one end of a pipe into /srv, that is, to create a named pipe:
int fd, p[2];
char buf[32];
pipe(p);
fd = create("/srv/namedpipe", 1, 0666);
sprint(buf, "%d", p[0]);
write(fd, buf, strlen(buf));
close(fd);
close(p[0]);
write(p[1], "hello", 5);
At this point, any process may open and read /srv/namedpipe to receive the hello string. Data written to /srv/namedpipe will be received
by executing
read(p[1], buf, sizeof buf);
in the above process.
SOURCE
/sys/src/9/port/devsrv.c
SRV(3)