Do the IDs under /dev/ufsid change when the partition is newfs'ed?

[Brooks Davis]

On Mon, Apr 25, 2011 at 12:55:38PM -0700, Doug Barton wrote:
> INRE the current discussion about labeling and how to refer to devices 
> in fstab, I'm curious if the IDs in /dev/ufsid change when the partition 
> is newfs'ed.

A simple experiment confirms the answer is yes:

[2:33pm] brooks at stormwind (~): ls -la /dev/ufsid/
total 1
dr-xr-xr-x  2 root  wheel          512 Apr  1 21:37 .
dr-xr-xr-x  7 root  wheel          512 Apr  1 21:37 ..
crw-r-----  1 root  operator    0, 108 Apr 26 14:33 4db6d7a0726eab90
crw-r-----  1 root  operator    0, 123 Apr 26 14:33 4db6d7a0726eab90s1
[2:33pm] brooks at stormwind (~): sudo newfs /dev/ad7 > /dev/null
[2:33pm] brooks at stormwind (~): ls -la /dev/ufsid/
total 1
dr-xr-xr-x  2 root  wheel          512 Apr  1 21:37 .
dr-xr-xr-x  7 root  wheel          512 Apr  1 21:37 ..
crw-r-----  1 root  operator    0, 108 Apr 26 14:33 4db6d7c2389adac2
crw-r-----  1 root  operator    0, 123 Apr 26 14:33 4db6d7c2389adac2s1
[2:33pm] brooks at stormwind (~): 


-- Brooks
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