Date: Wed, 25 Aug 2004 17:41:06 +0100 From: Paul Richards <paul@originative.co.uk> To: Nate Lawson <nate@root.org> Cc: Peter Wemm <peter@wemm.org> Subject: Re: cvs commit: src/sys/kern vfs_subr.c Message-ID: <20040825164106.GB5709@myrddin.originative.co.uk> In-Reply-To: <412678FC.6040009@root.org> References: <200408201921.i7KJLl3J035751@repoman.freebsd.org> <200408201516.32748.peter@wemm.org> <412678FC.6040009@root.org>
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On Fri, Aug 20, 2004 at 03:19:40PM -0700, Nate Lawson wrote: > Peter Wemm wrote: > >On Friday 20 August 2004 12:21 pm, Don Lewis wrote: > > > >> Modified files: > >> sys/kern vfs_subr.c > >> Log: > >> Don't attempt to trigger the syncer thread final sync code in the > >> shutdown_pre_sync state if the RB_NOSYNC flag is set. This is the > >> likely cause of hangs after a system panic that are keeping crash > >> dumps from being done. > > > > > >The hang that I saw was because interrupts are broken (they just stop > >for no apparent reason) and the ata_shutdown sync hooks are not in > >polled mode (which is correct - interrupts are supposed to be enabled > >at this point, and are for normal shutdowns). > > Did you got the "interrupt storm for xxx" message before this happened? > I think the check for this is too sensitive -- it is triggered on > resume by my an0 card. That's the only way I've seen interrupts stop > occuring during normal operation. It's been happening on one of my boxes too. I can't boot it at all with ACPI, I don't get any routing, without ACPI it runs for a while then all of a sudden box starts getting ATA DMA timeouts because interrupts stop working. I was going to send some dmesg from the two boot scenarios but it doesn't boot up at all anymore, just hangs I think just after the timecounter/cpu throttle steps messages, I think that's the point where it's probing for ATA devices - which might still be interrupt issues. It's not very useable considering it's -stable :-) Paul.
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