Date: Tue, 18 Mar 2014 03:39:04 -0700 (PDT) From: Anton Shterenlikht <mexas@bris.ac.uk> To: freebsd-current@freebsd.org, freebsd-sparc64@freebsd.org Subject: Re: reproducible panic every day at 03:02, probably triggered by daily periodic scipts - help Message-ID: <201403181039.s2IAd20h030639@mech-cluster241.men.bris.ac.uk> In-Reply-To: <1394134260.15679.91454577.172E5E29@webmail.messagingengine.com>
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I've spent a lot of time on this. At some point I started suspecting disk failures, based on dd errors and smartmontools reports. So I replaced the disks, and then replaced the whole box for another nominally identical SunBlade 1500. The panics persisted. I now think that multiple cold reboots might have damaged disks, not the other way round. In the end I had to conclude that this is not a hardware problem, but the OS issue, perhaps triggered by some heavy disk I/O. Various frequent panics exist at least from r260689 to r263096: r260689: http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/186760 r260914: http://www.freebsd.org/cgi/query-pr.cgi?pr=187219 r261798: http://www.freebsd.org/cgi/query-pr.cgi?pr=187080 r263096: http://www.freebsd.org/cgi/query-pr.cgi?pr=187527 I now reverted as far back as r258000, and the system seems stable, but I probably need few more days to be sure. If the system is indeed stable at r258000, when I have the time, I'll try to narrow down the problem revision. But I'd appreciate any hint that might save time. Anton
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