Panic using networked swap with 6.0-BETA1
Greg Lewis
glewis at eyesbeyond.com
Tue Jul 19 00:54:33 GMT 2005
Hi,
I have a Ultra 10 which I network boot in a diskless configuration to run
FreeBSD. This weekend I downloaded 6.0-BETA1 and got that set up. I've
gotten the following panic reproduceably while trying to compile the
lang/perl5.8 port when the machine starts to swap.
Note that this is typed in from looking at the console (I'd need to set
up a serial console) so apologies for any typos.
panic: bstrategy: no bufobj bp=0xc3dee258
cpuid = 0
KDB: enter: panic
[thread pid 7 tid 100027 ]
Stopped at kdb_enter+0x3c: ta %xcc, 1
db> trace
Tracing pid 7 tid 100027 td 0xfffff80017df84c0
panic() at panic+0x16c
swapdev_strategy() at swapdev_strategy+0x70
swp_pager_strategy() at swp_page_strategy+0x8c
swap_pager_putpages() at swap_pager_putpages+0x3e8
default_pager_putpages() at default_pager_putpages+0x1c
vm_pageout_flush() at vm_pageout_flush+0x14c
vm_pageout_clean() at vm_pageout_clean+0x334
vm_pageout_scan() at vm_pageout_scan+0x738
vm_pageout() at vm_pageout+0x3e8
fork_exit() at fork_exit+0x94
fork_trampoline() at fork_trampoline+0x8
db>
Please let me know if you want anything else examined from the debugger.
The server is an x86 box running FreeBSD 4.11-STABLE:
FreeBSD misty.eyesbeyond.com 4.11-STABLE FreeBSD 4.11-STABLE #0: Thu Apr 7 10:51:05 MDT 2005 glewis at misty.eyesbeyond.com:/usr/src/sys/compile/MISTY i386
I created the swap file on the server as follows:
dd if=/dev/zero of=swap bs=4k count=128k
The fstab entry looks like:
/swap none swap sw 0 0
Note that the last time I tried this was with FreeBSD 5.2 and a similar
setup worked then. The machine has been off since then for various reasons
and I thought now was a good time to resurrect it so I could unbreak the
x11-wm/afterstep-stable port on sparc64 :).
--
Greg Lewis Email : glewis at eyesbeyond.com
Eyes Beyond Web : http://www.eyesbeyond.com
Information Technology FreeBSD : glewis at FreeBSD.org
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