Date: Mon, 2 Jun 1997 12:49:37 +0100 (BST) From: Doug Rabson <dfr@nlsystems.com> To: Bruce Evans <bde@zeta.org.au> Cc: current@freebsd.org Subject: Re: processes hanging in getblk for shutdown on nfs client Message-ID: <Pine.BSF.3.95q.970602124920.810B-100000@herring.nlsystems.com> In-Reply-To: <199706020356.NAA08264@godzilla.zeta.org.au>
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On Mon, 2 Jun 1997, Bruce Evans wrote:
> On my nfs client system with /usr nfs-mounted, a plain reboot command
> now always leaves sendmail and/or xntpd hanging on getblk. The sync
> then fails because of dirty blocks. There was no problem until a
> week or two ago. There is no problem with the same kernel and similar
> utilities on my nfs server system.
Can you try this patch and see if it helps:
Index: vfs_bio.c
===================================================================
RCS file: /home/ncvs/src/sys/kern/vfs_bio.c,v
retrieving revision 1.117
diff -u -r1.117 vfs_bio.c
--- vfs_bio.c 1997/05/30 22:25:35 1.117
+++ vfs_bio.c 1997/06/02 10:38:23
@@ -514,11 +514,11 @@
* This can avoid unnecessary re-reads of the buffer.
*/
if ((bp->b_flags & B_VMIO)
- && (bp->b_vp->v_tag != VT_NFS
+ /* && (bp->b_vp->v_tag != VT_NFS
|| (bp->b_flags & (B_NOCACHE | B_INVAL | B_ERROR))
|| bp->b_validend == 0
|| (bp->b_validoff == 0
- && bp->b_validend == bp->b_bufsize))) {
+ && bp->b_validend == bp->b_bufsize)) */) {
vm_ooffset_t foff;
vm_object_t obj;
int i, resid;
--
Doug Rabson Mail: dfr@nlsystems.com
Nonlinear Systems Ltd. Phone: +44 181 951 1891
Fax: +44 181 381 1039
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