[902] in NetBSD-Development
Re: Some form of cache corruption
daemon@ATHENA.MIT.EDU (John Kohl)
Wed Jul 26 09:17:01 1995
Date: Wed, 26 Jul 1995 09:16:43 -0400
From: John Kohl <jtk@atria.com>
To: ghudson@MIT.EDU
Cc: netbsd-afs@MIT.EDU
In-Reply-To: <199507060637.CAA23275@glacier.MIT.EDU> (message from Greg Hudson
on Thu, 6 Jul 1995 02:37:44 -0400)
>>>>> "Greg" == Greg Hudson <ghudson@MIT.EDU> writes:
Greg> I've had an odd problem on both limekiller and glacier tonight.
Greg> The problem seems to have occurred when project.gnu.i386_nbsd1 was
Greg> released and a new version of gnu ls propagated into
Greg> /mit/gnu/arch/i386_nbsd1/bin. The version from the read-only
Greg> volume is dumping core, while the version from the read-write
Greg> volume works. However, "sum" and "diff" think the two are the
Greg> same:
Greg> This problem did not happen when I logged into granola and tested
Greg> it after I encountered the problem on limekiller, suggesting that
Greg> the problem is conditional on ls having been in the AFS cache
Greg> prior to the volume release.
I have a suspicion as to what causes this, but I haven't looked at the
code (I'll be doing some AFS stuff tonight, so I'll try to find it).
Somewhere when a file is re-released AFS needs to call the VM system to
uncache pages it has from the old version of the file.
