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From: Dominic Fandrey <kamikaze@bsdforen.de>
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To: Kris Kennaway <kris@FreeBSD.org>
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Cc: FreeBSD Current <freebsd-current@freebsd.org>,
	Ruslan Ermilov <ru@FreeBSD.org>
Subject: Re: Attempt to write outside dump device boundaries.
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Kris Kennaway wrote:
> Ruslan Ermilov wrote:
>> On Sun, Jun 29, 2008 at 01:09:52PM +0200, Kris Kennaway wrote:
>>> I am frequently getting this when trying to minidump on amd64:
>>>
>>> Physical memory: 8168 MB
>>> Dumping 2133 MB: 2118 2102 2086 2070 2054 2038 2022 2006 1990 1974 
>>> 1958 1942 1926 1910 1894 1878 1862 1846 1830 1814 1798 1782 1766 1750 
>>> 1734 1718 1702 1686 1670 1654 1638 1622 1606 1590 1574 1558 1542 1526 
>>> 1510 1494 1478 1462 1446 1430 1414 1398 1382 1366 1350 1334 1318 1302 
>>> 1286 1270 1254 1238 1222 1206 1190 1174 1158 1142 1126 1110 1094 1078 
>>> 1062 1046 1030 1014 998 982 966 950 934 918 902 886 870 854 838 822 
>>> 806 790 774 758 742 726 710 694 678 662 646 630 614 598 582 566 550 
>>> 534 518 502 486 470 454 438 422 406 390 374 358 342 326 310 294 278 
>>> 262 246 230 214 198 182 166 150 134 118 102 86 70 54 38 22 6Attempt 
>>> to write outside dump device boundaries.
>>>
>>> ** DUMP FAILED (ERROR 6) **
>>> = 0
>>>
>> Yes, it happens most often on SMP machines.  Previously it could
>> overwrite data on your disk (in our case it destroyed GEOM mirrors).
>> Now the attempt is logged and prevented.
>>
>> What's your question?  ;)
> 
> I'd have thought it was obvious: "why?"
> 
> Kris

Not enough swap space?