More cleanups of the RAID1 failure mode code.
Add functionality that writes the changed RAID config setup
back to the disks (in controller BIOS specific format), so
that a reboot will make the BIOS pick up the changed config.
to fix their code.
ata stuff:
Change name of ar_attach to not colide with existing ar_attach in if_ar.c.
usb stuff:
Create a dummy function to satisfy a call to it when in DEBUG mode.
Overhaul of the attach/detach code and structures, there were some nasty
bugs in the old implementation. This made it possible to collapse the
ATA/ATAPI device control structures into one generic structure.
A note here, the kernel is NOT ready for detach of active devices,
it fails all over in random places, but for inactive devices it works.
However for ATA RAID this works, since the RAID abstration layer
insulates the buggy^H^H^H^H^H^Hfragile device subsystem from the
physical disks.
Proberly detect the RAID's from the BIOS, and mark critical RAID1
arrays as such, but continue if there is enough of the mirror left
to do so.
Properly fail arrays on a live system. For RAID0 that means return EIO,
and for RAID1 it means continue on the still working part of the mirror
if possible, else return EIO.
If the state changes, log this to the console.
Allow for Promise & Highpoint controllers/arrays to coexist on the
same machine. It is not possible to distribute arrays over different
makes of controllers though.
If Promise SuperSwap enclosures are used, signal disk state on the
status LED on the front.
Misc fixes that I had lying around for various minor bugs.
Sponsored by: Advanis Inc.
This might need additional code for hotswapping use, but first
I need to get my hands on actual hw...
Based on docs kindly provided by Promise Inc which we thank for
the close cooperation with the FreeBSD project!.
tracks as /dev/acdNtY.
This solves the problems with having to deal with howmany and which
devices are open.
For hysterical reasons ONLY, make a link to both the acdNa & acdNc devices.
This fixed the problem on the 3 platforms I've been able to test on.
I'm still of the oppinion that the BIOS should take care of this,
however some board makers only apply this when they spot a
SBLive! soundcard, but the problem exists even without a SBLive!.
This fix should probably go somewhere else, but for now I'll
keep it here since we havn't got a central place to put
such things.
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.
Sorry john! (your next MFC will be a doosie!)
Reviewed by: peter@freebsd.org, dillon@freebsd.org
X-MFC after: ha ha ha ha
