Re: vnode_pager_putpages errors on 6.2

2007-06-04 Thread steve 
On Thu, May 31, 2007 at 06:15:14PM +0200, Christoph Schug wrote:
 On Tue, May 29, 2007, steve wrote:
 
  Howdy!
  
  I had this issue on 4.x, which is basically, I have
  machines that do cgi stuff for customers, and there is a local
  md device that is used as a tmp. When it fills the machine 
  logs errors
  
  vnode_pager_putpages I/O error 28..
 [...]
 
 Just for the record: there's still an open discussion on the same issue
 in PR kern/67919 [1]. Is this issue resolved completely with this patch?

Not sure yet. I'm running some machines with the patch
and some without, hoping that the unpatched machines will fail and
the patched ones won't. Havn't been able to reproduce the problem
to conclude. But I'll let you know ...

-steve

 
 [1] http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/67919
 
 Thanks
 -cs
 
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Re: vnode_pager_putpages errors on 6.2

2007-05-31 Thread Christoph Schug 
On Tue, May 29, 2007, steve wrote:

 Howdy!
 
   I had this issue on 4.x, which is basically, I have
 machines that do cgi stuff for customers, and there is a local
 md device that is used as a tmp. When it fills the machine 
 logs errors
 
 vnode_pager_putpages I/O error 28..
[...]

Just for the record: there's still an open discussion on the same issue
in PR kern/67919 [1]. Is this issue resolved completely with this patch?

[1] http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/67919

Thanks
-cs
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vnode_pager_putpages errors on 6.2

2007-05-29 Thread steve 
Howdy!

I had this issue on 4.x, which is basically, I have
machines that do cgi stuff for customers, and there is a local
md device that is used as a tmp. When it fills the machine 
logs errors

vnode_pager_putpages I/O error 28..

and the machine is unresponsive and needs to be
power cycled.

There is a previous thread on this issue

http://atm.tut.fi/list-archive/freebsd-stable/msg19031.html

and a subsequent patch for 4.x

http://atm.tut.fi/list-archive/freebsd-stable/msg19288.html

that I appled to 4.x and it solved the problem.

Now that I have upgraded to 6.2, the problem has
recurred, but the previous patch is no longer valid. Is
there something wrong with the patch/solution given, and
is there a solution for 6.2?

thanx - steve


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Re: vnode_pager_putpages errors on 6.2

2007-05-29 Thread Kip Macy 

On 5/29/07, steve [EMAIL PROTECTED] wrote:

Howdy!

I had this issue on 4.x, which is basically, I have
machines that do cgi stuff for customers, and there is a local
md device that is used as a tmp. When it fills the machine
logs errors

vnode_pager_putpages I/O error 28..

and the machine is unresponsive and needs to be
power cycled.

There is a previous thread on this issue

http://atm.tut.fi/list-archive/freebsd-stable/msg19031.html

and a subsequent patch for 4.x

http://atm.tut.fi/list-archive/freebsd-stable/msg19288.html

that I appled to 4.x and it solved the problem.

Now that I have upgraded to 6.2, the problem has
recurred, but the previous patch is no longer valid. Is
there something wrong with the patch/solution given, and
is there a solution for 6.2?

thanx - steve



All the patch does is rate limit error messages to once per second and
return VM_PAGER_BAD when there is an error. Constructing a similar
patch for 6.2 should be trivial.

-Kip
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Re: vnode_pager_putpages errors on 6.2

2007-05-29 Thread LI Xin 
Hi, Steve,

steve wrote:
[...]
 http://atm.tut.fi/list-archive/freebsd-stable/msg19288.html
 
   that I appled to 4.x and it solved the problem.
 
   Now that I have upgraded to 6.2, the problem has
 recurred, but the previous patch is no longer valid. Is
 there something wrong with the patch/solution given, and
 is there a solution for 6.2?

In RELENG_6_2, the rate limit part of the patch was implemented in a
different way.  Could you please try this patch to see if it solves your
problem?

Cheers,
-- 
Xin LI [EMAIL PROTECTED]  http://www.delphij.net/
FreeBSD - The Power to Serve!
Index: vnode_pager.c
===
RCS file: /home/ncvs/src/sys/vm/vnode_pager.c,v
retrieving revision 1.221.2.7
diff -u -p -u -r1.221.2.7 vnode_pager.c
--- vnode_pager.c   14 Oct 2006 06:04:32 -  1.221.2.7
+++ vnode_pager.c   30 May 2007 01:43:39 -
@@ -1083,6 +1083,7 @@ vnode_pager_generic_putpages(vp, m, byte
struct iovec aiov;
int error;
int ioflags;
+   int status;
int ppscheck = 0;
static struct timeval lastfail;
static int curfail;
@@ -1177,8 +1178,9 @@ vnode_pager_generic_putpages(vp, m, byte
printf(vnode_pager_putpages: residual I/O %d at %lu\n,
auio.uio_resid, (u_long)m[0]-pindex);
}
+   status = error ? VM_PAGER_BAD : VM_PAGER_OK;
for (i = 0; i  ncount; i++) {
-   rtvals[i] = VM_PAGER_OK;
+   rtvals[i] = status;
}
return rtvals[0];
 }


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