Date: Fri, 20 Feb 2004 12:29:48 -0700 (MST) From: Scott Long <scottl@freebsd.org> To: Lachlan O'Dea <odela01@ca.com> Cc: freebsd-current@freebsd.org Subject: Re: kernel panic after 5.2 RELEASE --> 5.2.1, DELL PE2650, SCSI Message-ID: <20040220121736.D45411@pooker.samsco.home> In-Reply-To: <1F529EE7-6345-11D8-9307-000A95DBB47C@ca.com> References: <20040217102453.V59439@lorax.ldc.upenn.edu> <4032A691.3020006@freebsd.org><4032CC86.7000800@freebsd.org> <1F529EE7-6345-11D8-9307-000A95DBB47C@ca.com>
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[-- Attachment #1 --]
On Fri, 20 Feb 2004, Lachlan O'Dea wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On 18 Feb 2004, at 13:23, Scott Long wrote:
>
> > Lachlan O'Dea wrote:
> >
> >> I managed to observe the system in top the second time this happened.
> >> One after another, each process freezes forever in getblk. Kind of
> >> scary to watch :-).
> >> With 5.2-RELEASE, I was seeing the blocked processes, but I don't
> >> recall seeing all of that console output before. I haven't actually
> >> seen experienced any problems with 5.2-RELEASE for a while, I just
> >> have to avoid long-running find(1) processes. (E.g. put
> >> daily_status_security_enable="NO" in periodic.conf).
> >
> > The same problem exists in 5.2. I thought that I had fixed it, but
> > apparently not.
>
> I put your aacvar.h patch in yesterday (so I'm running the latest
> 5.2.1-RC2), and since then have experienced zero problems! The
> overnight security check ran flawlessly for the first time since...
> well, ever. Thanks so much.
>
Thanks for verifying it. I think that I found the real problem, would you
be willing to do one more test? Attached is the patch. This involves
move AAC_MAX_FIB back to 512 and adding a line to aac.c.
Thanks!
Scott
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Index: aac.c
===================================================================
RCS file: /usr1/ncvs/src/sys/dev/aac/aac.c,v
retrieving revision 1.81.2.1
diff -u -r1.81.2.1 aac.c
--- aac.c 11 Feb 2004 10:34:24 -0000 1.81.2.1
+++ aac.c 20 Feb 2004 19:28:45 -0000
@@ -1291,6 +1291,7 @@
/* put the FIB on the outbound queue */
if (aac_enqueue_fib(sc, cm->cm_queue, cm) == EBUSY) {
+ aac_remove_busy(cm);
aac_unmap_command(cm);
aac_requeue_ready(cm);
}
Index: aacvar.h
===================================================================
RCS file: /usr1/ncvs/src/sys/dev/aac/aacvar.h,v
retrieving revision 1.36.2.1
diff -u -r1.36.2.1 aacvar.h
--- aacvar.h 18 Feb 2004 06:20:50 -0000 1.36.2.1
+++ aacvar.h 20 Feb 2004 19:28:58 -0000
@@ -58,7 +58,7 @@
*/
#define AAC_FIB_COUNT (PAGE_SIZE/sizeof(struct aac_fib))
#define AAC_PREALLOCATE_FIBS 128
-#define AAC_MAX_FIBS 504
+#define AAC_MAX_FIBS 512
/*
* The controller reports status events in AIFs. We hang on to a number of
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