Let's back out LOADER_ZFS_SUPPORT from STABLE

Daniel Eischen deischen at freebsd.org
Sun Jun 14 23:08:57 UTC 2009


On Sun, 14 Jun 2009, Dan Allen wrote:

>
> On 14 Jun 2009, at 1:27 AM, Daniel Eischen wrote:
>
>> From one of your older emails, you mention you are using
>> ad0s2a as / and ad0s2b as swap, and then say that ad0s2c
>> is unused (I may have the ad0s2 part wrong).  But ad0s2c
>> should be the entire slice (or partition depending on
>> the wording you are used to).
>> 
>> How about posting a relevent fdisk and disklabel (or
>> gpart show) so we can see what your slices and partitions
>> look like (fdisk /dev/ad0, disklabel /dev/ad0s2).
>
> ad0s2c is the entire slice as you thought it should be.
>
> Here is fdisk and bsdlabel /dev/ad0s2:
>
> ******* Working on device /dev/ad0 *******
> parameters extracted from in-core disklabel are:
> cylinders=232581 heads=16 sectors/track=63 (1008 blks/cyl)
>
> Figures below won't work with BIOS for partitions not in cyl 1
> parameters to be used for BIOS calculations are:
> cylinders=232581 heads=16 sectors/track=63 (1008 blks/cyl)
>
> Media sector size is 512
> Warning: BIOS sector numbering starts with sector 1
> Information from DOS bootblock is:
> The data for partition 1 is:
> sysid 7 (0x07),(OS/2 HPFS, NTFS, QNX-2 (16 bit) or Advanced UNIX)
>   start 63, size 188747622 (92161 Meg), flag 0
> 	beg: cyl 0/ head 1/ sector 1;
> 	end: cyl 1023/ head 10/ sector 63
> The data for partition 2 is:
> sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
>   start 188747685, size 45688860 (22309 Meg), flag 80 (active)
> 	beg: cyl 1023/ head 255/ sector 63;
> 	end: cyl 1023/ head 14/ sector 63
> The data for partition 3 is:
> <UNUSED>
> The data for partition 4 is:
> <UNUSED>
>
>
>
> # /dev/ad0s2:
> 8 partitions:
> #        size   offset    fstype   [fsize bsize bps/cpg]
> a: 43591708  2097152    4.2BSD        0     0     0
> b:  2097152        0      swap
> c: 45688860        0    unused        0     0         # "raw" part, don't 
> edit

Seems weird to see swap at offset 0 and partition a after swap.
I wonder if that is screwing things up.  And shouldn't the offset
for your first slice start at offset 188747685 (from fdisk)?

This is from my system:

$ fdisk /dev/ad0
******* Working on device /dev/ad0 *******
parameters extracted from in-core disklabel are:
cylinders=155061 heads=16 sectors/track=63 (1008 blks/cyl)

Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=155061 heads=16 sectors/track=63 (1008 blks/cyl)

Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 6 (0x06),(Primary DOS, 16 bit FAT (>= 32MB))
     start 63, size 20964762 (10236 Meg), flag 0
         beg: cyl 0/ head 1/ sector 1;
         end: cyl 1023/ head 254/ sector 63
The data for partition 2 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
     start 20964825, size 135331560 (66079 Meg), flag 80 (active)
         beg: cyl 1023/ head 255/ sector 63;
         end: cyl 1023/ head 254/ sector 63
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>

$ disklabel /dev/ad0s2
# /dev/ad0s2:
8 partitions:
#        size   offset    fstype   [fsize bsize bps/cpg]
   a:  2097152 20964825    4.2BSD     2048 16384 28552
   b:  4194304 23061977      swap
   c: 135331560 20964825    unused        0     0
   d:  4194304 27256281    4.2BSD     2048 16384 28552
   e:  4194304 31450585    4.2BSD     2048 16384 28552
   f: 16777216 35644889    4.2BSD     2048 16384 28552
   g: 103874280 52422105    4.2BSD     2048 16384 28536

-- 
DE


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