Date: Tue, 3 Feb 2009 21:39:18 +0000 From: Freminlins <freminlins@gmail.com> To: Dan Nelson <dnelson@allantgroup.com> Cc: questions@freebsd.org, Sandra Kachelmann <s.kachelmann@googlemail.com> Subject: Re: NFS, how to find out which files are used Message-ID: <eeef1a4c0902031339j7c3accdtfb405a0dd55c0262@mail.gmail.com> In-Reply-To: <20090203170233.GM75802@dan.emsphone.com> References: <91b92520902030746j2256dc58y2b1447c6e4471e4@mail.gmail.com> <20090203170233.GM75802@dan.emsphone.com>
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2009/2/3 Dan Nelson <dnelson@allantgroup.com> > In the last episode (Feb 03), Sandra Kachelmann said: > > I have an NFS fileserver and would like to figure out which files are > > being read/written to. Is there something to find that out? Something > > similar to samba's 'smbstatus' command. > > The best you can do currently is run tcpdump/wireshark and watch the remote > file operations as they happen... NFS doesn't access files by filename, > but > by NFS filehandle (basically device+inode number), so a remote client first > looks up the filename to get the filehandle, and all accesses are done via > the filehandle at that point. Theoretically, one could write a dtrace > script that watches calls to nfs_namei, nfsrv_read, and nfsrv_write, and > then matches read/write ops with the filenames that were looked up > beforehand. Solaris NFS has a logging option, which does exactly what Sandra is asking for. It's al reason why I prefer to use Solaris for NFS servers. F.
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