Date: Wed, 2 Dec 2009 09:48:05 -0500 From: John Baldwin <jhb@freebsd.org> To: freebsd-stable@freebsd.org Subject: Re: loader(8) readin failed on 7.2R and later including 8.0R Message-ID: <200912020948.05698.jhb@freebsd.org> In-Reply-To: <20091202.021339.237377394.hrs@allbsd.org> References: <20091202.021339.237377394.hrs@allbsd.org>
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On Tuesday 01 December 2009 12:13:39 pm Hiroki Sato wrote: > Hi, > > This may be a rare case, but I post this with the hope for ideas from > people here. > > I have experienced a strange loader(8) error. After upgrading one of > my boxes from 7.1R to 7.2R, an error appeared on "boot" command of > loader(8) like this: > > | FreeBSD/i386 bootstrap loader, Revision 1.1 > | (hrs@cmaster.allbsd.org, Mon Nov 30 04:01:24 JST 2009) > | Loading /boot/defaults/loader.conf > | /boot/kernel/kernel text=0x8b6c04 > | readin failed > | > | elf32_loadimage: read failed > | /boot/kernel/kernel text=0x8b6c04 > | readin failed > | > | elf32_loadimage: read failed > | Unable to load a kernel! > > (Actually the above error message was displayed when I upgraded it to > 8.0R. The message was the same when I tried 7.2R.) > > Replacing the /boot/loader with 7.1R's one, 7.2R's kernel worked > fine. > > Next, I tried to upgrade it to 8.0R. As I explained earlier, the > 8.0R's loader did not work either, so I replaced it with 7.1R again. > However, 7.1R loader(8) + 8.0R kernel displayed the following error > and did not work: > > | OK load /boot/kernel/kernel > | /boot/kernel/kernel text=0x8db9a4 data=0xdd134+0xa5e84 syms=[0x4+0x99390+0x4+0xd2201 > | elf32_loadimage: could not read symbols - skipped! > > While the "load" command seemed to finish, the box got stuck just > after entering "boot" command. > > Curious to say, I have got this symptom only on a specific box in > more than ten different boxes I upgraded so far; it is based on an > old motherboard Supermicro P4DPE[*]. > > [*] http://www.supermicro.com/products/motherboard/Xeon/E7500/P4DPE.cfm > > Any workaround? Booting from release CDROMs (7.2R and 8.0R) also > fail. On the box "7.1R" or "7.1R's loader + 7.2R kernel" worked > fine. It is possible something in changes of loader(8) between 7.1R > and 7.2R is the cause, but I am still not sure what it is... It may be related to the loader switching to using memory > 1MB for its malloc(). Maybe try building the loader with 'LOADER_NO_GPT_SUPPORT=yes' in /etc/src.conf? -- John Baldwin
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