Hello,

I am using an IBM p615 for developing kexts. We frequently load/unload
kexts and panic/reboot the box due to this activity.
I have observed that after every couple of weeks, the bootup gets stuck
when starting kernel i.e. when it is loading /unix.
Is it possible that /unix (which actually points to unix_mp) is getting
corrupted somehow? The filesystem is intact all throughout.

thanks
-kamal

/unix -> /usr/lib/boot/unix_mp
/usr/lib/boot/unix -> /usr/lib/boot/unix_mp

also check if your /dev/ipldevice is not getting wiped out... it should
be a link to your boot disk ( /dev/rhdisk0 if your boot device is
hdisk0 )

what does it get stuck at? an LED? or do you get an error message?

The LED gets stuck at "Starting kernel.." and the console shows the
same message. The symbolic links are all fine without which we wouldn't
have reached this pt yet. Most likely, some operation s corrupting the
kernel binary we are trying to load. We do a lot of sysconfig() to
load/unload modules and sometimes the kexts are not unloaded properly
and we end up with multiple instances of the same kext in memory.

regards
-kamal

kk wrote:
> what does it get stuck at? an LED? or do you get an error message?