Date: Wed, 26 May 2010 03:08:03 -0700 From: Mark Morley <mark@islandnet.com> To: Rick Macklem <rmacklem@uoguelph.ca> Cc: freebsd-stable@freebsd.org, Mark Morley <mark@islandnet.com> Subject: Re: NFS trouble on 7.3-STABLE i386 Message-ID: <20100526100804.1E5E4106566B@hub.freebsd.org>
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On Tue, 25 May 2010 20:59:08 -0400 (EDT) Rick Macklem wrote:
You could try this patch. (It reverts the only vnode locking change that I
can see was done the the nfs server between 7.1 and 7.3.):
--- nfs_serv.c.sav 2010-05-25 19:40:29.000000000 -0400
+++ nfs_serv.c 2010-05-25 19:41:38.000000000 -0400
@@ -3236,7 +3236,7 @@
io.uio_rw = UIO_READ;
io.uio_td = NULL;
eofflag = 0;
- vn_lock(vp, LK_SHARED | LK_RETRY, td);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
if (cookies) {
free((caddr_t)cookies, M_TEMP);
cookies = NULL;
@@ -3518,7 +3518,7 @@
io.uio_rw = UIO_READ;
io.uio_td = NULL;
eofflag = 0;
- vn_lock(vp, LK_SHARED | LK_RETRY, td);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
if (cookies) {
free((caddr_t)cookies, M_TEMP);
cookies = NULL;
If you get a chance to try it, please let us know if it helps, rick
Thanks, but unfortunately it didn't work. Rebooted it four hours ago with the patch in place and at the moment I have seven nfsd processes stuck in that state.
Could it indicate a problem with the underlying disk system? It's an aac0 raid, but it has no errors and the controller indicates all is well, so I doubt it.
Mark
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