Date: Mon, 24 Mar 2008 20:09:16 -0700 From: Bert JW Regeer <xistence@0x58.com> To: Wesley Shields <wxs@FreeBSD.org> Cc: hackers@FreeBSD.org Subject: Re: zpool scrub tank && high file system activity caused crash Message-ID: <CF1CD06E-F617-4713-AD1B-04DBDC1F5789@0x58.com> In-Reply-To: <20080325024631.GF7923@atarininja.org> References: <CB3FE976-9726-4F15-8F30-05E1E54A1610@0x58.com> <20080325024631.GF7923@atarininja.org>
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On Mar 24, 2008, at 19:46 , Wesley Shields wrote: > On Mon, Mar 24, 2008 at 04:23:19PM -0700, Bert JW Regeer wrote: >> Hey guys, >> >> I am running FreeBSD 7.0-RELEASE with GENERIC on a AMD XP Athlon >> 3500+ with >> 1267 MB of ram, and a GigBit NIC. I am testing out ZFS just for the >> hell of >> it, I know, 32 bit is not suggested and runs badly, but it does >> what it >> needs to do. >> >> I was copying large amounts of data for backup purposes from my >> MacBook Pro >> to the machine over FTP. At the time I was looking around the man >> page for >> zpool, and figured I'd run a zpool scrub just to see how badly it >> affects >> performance. It affects it in that it takes down the machine with a >> dump. >> >> keyhole# kgdb kernel.debug /var/crash/vmcore.0 >> [GDB will not be able to debug user-mode threads: /usr/lib/ >> libthread_db.so: >> Undefined symbol "ps_pglobal_lookup"] >> GNU gdb 6.1.1 [FreeBSD] >> Copyright 2004 Free Software Foundation, Inc. >> GDB is free software, covered by the GNU General Public License, >> and you >> are >> welcome to change it and/or distribute copies of it under certain >> conditions. >> Type "show copying" to see the conditions. >> There is absolutely no warranty for GDB. Type "show warranty" for >> details. >> This GDB was configured as "i386-marcel-freebsd". >> >> Unread portion of the kernel message buffer: >> panic: vm_page_insert: offset already allocated >> cpuid = 0 >> Uptime: 10h58m58s >> Physical memory: 1267 MB >> Dumping 335 MB: 320 304 288 272 256 240 224 208 192 176 160 144 128 >> 112 96 >> 80 64 48 32 16 > > Out of curiosity, have you done any tuning on this machine? > Specifically some of the stuff mentioned on the wiki? > > -- WXS I had not. I changed the size the kernel was allowed to be to at least 512 M as that is recommended, and I got the same panic as the first email I sent out (this time as seen in dmesg -a), I also ran out of space on /var so it did not save the vmcore :(. I am going to wait till I get my 64 bit system up and running before messing with ZFS again. I don't think the amount of ram I have in that machine would be enough with some of the other stuff it will have to do as well, if I let the kernel eat up to a GB. Bert JW Regeer
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