bio and sensors in OpenBSD

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ioctl • bioctl is the userland half of our RAID management tool • intended as the ifconfig of RAID controllers • it translates the bio ioctls into something humans can grok
ioctl • inquiry functions: • display RAID setup and status • blink enclosure slot so you can find it • recovery functions: • alarm management • create hot-spare • rebuild to hot-spare
Page 1 and 2: io and sensors in OpenBSD Marco Pee
Page 3 and 4: what is RAID management? • the ab
Page 5 and 6: why do we care? • computers are n
Page 7 and 8: what's the solution? • take some
Page 9 and 10: sensor hardware • we've found a l
Page 11 and 12: the sensor framework • maintains
Page 13 and 14: sensors in userland • userland ge
Page 15 and 16: sensors in the kernel void void str
Page 17 and 18: sensors via sysctl(8) # sysctl hw.s
Page 19 and 20: sensors summary • sensors are not
Page 21 and 22: vendor tools • binary only, and l
Page 23 and 24: typical RAID management stack • t
Page 25 and 26: OpenBSD RAID management bioctl bio(
Page 27: io inside drivers • In order to s
Page 31 and 32: ioctl when we pull a disk # bioctl
Page 33 and 34: ioctl when we make it a spare # bio
Page 35 and 36: RAID and sensors • along with tem
Page 37 and 38: supported hardware • most SCSI an
Page 39 and 40: i have a dream... (the future) •
Page 41 and 42: thx • marco, krw, pascoe, deraadt

bio and sensors in OpenBSD

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