Parallels v4 regression (aka ada(4) oddity) in RELENG_9
devin.teske at fisglobal.com
Mon Jan 23 18:07:02 UTC 2012
I have a Parallels virtual machine and it runs FreeBSD 4 through 8 just
However, in RELENG_9 I notice something different. My once "ad0" is now showing
up as "ada0". However, something even stranger is that devfs is providing both
ad0 family devices AND ada0 family devices.
What's worse is that I can't seem to partition the disk with MBR+disklabel
My procedure goes something like this:
1. Boot from RELENG_9 LiveCD
2. Execute: sysctl -n kern.disks
3. Notice two items: cd0 ada0
4. Look in /dev
5. Notice several items: ad0 ad0p1 ad0p2 ad0p3 ada0 ada0p1 ada0p2 ada0p3
6. Wipe partition table by executing: dd if=/dev/zero of=/dev/ada0 bs=512k
7. Look in /dev
8. Notice less items now: ad0 ada0
9. Execute: sysctl -n kern.disks
10. Notice nothing changed: cd0 ada0
11. Write out standard "whole disk" MBR "slice"
12. Look in /dev
13. Notice that nothing changed: ad0 ada0
NOTE: Where is ad0s1 or ada0s1?
14. Use fdisk to make sure everything was written successfully
15. Notice everything looks good (slice 1 is of type FreeBSD, slice 2, 3, and 4
17. Boot back into RELENG_9 LiveCD
18. Look in /dev
19. Notice that the old devices are back!: ad0 ad0p1 ad0p2 ad0p3 ada0 ada0p1
20. Use fstab to look at MBR partition table
21. Notice that things look good (with respect to fdisk'ing): slice 1 is
FreeBSD, 2, 3, and 4 are still unused
22. Notice /dev still doesn't have ad0s1 or ada0s1
23. Use gpart to look at ada0
24. Notice "GPT [CORRUPT]"
Use same exact RELENG_9 LiveCD on either a physical machine or VMware Virtual
Go back to Parallels 4
Go back to RELENG_8 LiveCD with Parallels 4
What's going on here? I think ada(4) is my problem. Can someone please provide
feedback? Willing to dig further and provide any/all feedback to help fix this
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