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Re: how to use 5T RAID disk with NetBSD

On Nov,Tuesday 11 2008, at 1:22 AM, wrote:


Can you explain this in details
You can use wedges which aren't that well documented. Alternatively, you
can always cheat and just format the raw partition (d on x86), e.g.
/dev/rsd1d. This will bypass disklabel entirely.

How can I cheat the disklabel.

The disklabel gives wrong total sectors:

quercus# disklabel sd2
# /dev/rsd2d:
type: SCSI
disk: A16U-G2421
label: fictitious
bytes/sector: 512
sectors/track: 255
tracks/cylinder: 255
sectors/cylinder: 65025
cylinders: 168126
total sectors: 2342498304
rpm: 5411
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0           # microseconds
track-to-track seek: 0  # microseconds
drivedata: 0

It should be 65025*168126=10932393150 (which is a correct number) instead of 2342498304. How can I fix this ? I've tried to change the total sectors to the correct one but disklabel gives me the error message "invalid total
sectors". Any help in fixing this would be appreciated.

You can't use disklabel for that because it uses only 32bit value for that. You can try to use dk or whole device(device with d suffix). Or you can give haad-dm branch shot and use LVM to create multiple partitions on your RAID



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