[13434] in Athena Bugs
NetProb ticket #3323, sun4 [7.7R]: afs
daemon@ATHENA.MIT.EDU (mbarker@MIT.EDU)
Thu Apr 20 09:48:02 1995
From: mbarker@MIT.EDU
Date: Thu, 20 Apr 1995 09:47:56 -0400
To: afsdev@MIT.EDU, yandros@MIT.EDU
Cc: bugs@MIT.EDU
thanks for the report. I'm passing it on to afsdev for information.
mike
>From yandros@MIT.EDU Thu Apr 20 06:18:31 1995
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>From: yandros@MIT.EDU
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>Date: Thu, 20 Apr 1995 06:18:22 -0400
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>To: bugs@MIT.EDU
>Subject: sun4 [7.7R]: afs
>X-Orgs: MIT SIPB VWA DIMINS
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>Content-Length: 552
>
>
>System name: deathtongue
>Type and version: SPARC/IPX 7.7R
>Display type: cgthree
>
>What were you trying to do?
>
> stress-test AFS. OK, not really, but it might as well have been
> what I was trying to do.
>
>What went wrong?
>
> I got this message:
>
> 06:11 afs: FlushVcache page screwup
>
> in my console.
>
>What should have happened?
>
> AFS shouldn't be screwing up when FlushVCacheing? :)
>
> Since this is clearly a ``hey, this happened!'' debugging message, I
> thought that I'd tell you ``hey, this happened!''
>
>Anything else you'd like to add?
>
>
>NETPROB-NOTE:
>Note: mbarker Thu Apr 20 09:44:25 1995
>error message is in afs/afs_cache.c
afs_FlushVCache(avc)
register struct vc>ache *avc;
...
/* eval, while holding all locks, whether there are any page>s
* left, or any spurious references. If both are false, and
* we ha>ve vcache lock, then there can be no references added
* while we hold the >vcache lock.
* If "i" is set, we can discard this entry.
*/
i = (>avc->v.v_pages == (struct page *) 0) && (avc->v.v_count == 1);
if ((avc->v.>v_pages && !(avc->states & CHasPages)) ||
(!avc->v.v_pages && (avc->sta>tes & CHasPages))) {
printf("afs: FlushVcache page screwup\n");
>i = 0;
}
...>
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