Re: GBDE, problems using gbde_swap

Allan Fields wrote:

>On Mon, Oct 18, 2004 at 01:17:29PM +0200, Ondra Holecek wrote:
>  
>
>>hello,
>>
>>I wanted to use encrypted swap (gbde_swap in /etc/rc.d) on 5.3-BETA7, 
>>but after second reboot, the system did not boot - it finised with boot 
>>manager (F1 - FreeBSD).
>>
>>I wrote problem report where you can read details:
>>
>>http://www.freebsd.org/cgi/query-pr.cgi?pr=72812
>>
>>    
>>
>>>Category:       kern
>>>Responsible:    freebsd-bugs
>>>Synopsis:       GBDE, problems using gbde_swap
>>>Arrival-Date:   Mon Oct 18 11:00:44 GMT 2004
>>>      
>>>
>
>Can you follow up the PR with more details such as output
>of:
>fdisk /dev/ad0
>
******* Working on device /dev/ad0 *******
parameters extracted from in-core disklabel are:
cylinders=38760 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=38760 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 165 (0xa5),(FreeBSD/NetBSD/386BSD)
    start 63, size 39070017 (19077 Meg), flag 80 (active)
        beg: cyl 0/ head 1/ sector 1;
        end: cyl 1023/ head 15/ sector 63
The data for partition 2 is:
<UNUSED>
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>

>disklabel /dev/ad0s1
>  
>
# /dev/ad0s1:
8 partitions:
#        size   offset    fstype   [fsize bsize bps/cpg]
  a:  2097152  1048576    4.2BSD     2048 16384 28552
  b:  1048576        0      swap                   
  c: 39070017        0    unused        0     0         # "raw" part, 
don't edit
  d:  4194304  3145728    4.2BSD     2048 16384 28552
  e: 31729985  7340032    4.2BSD     2048 16384 28552

>You can boot from the install or live CD and run a fixit shell and
>from there should be able to get this info.
>
>  
>
Now I have it repaired (i have to work on this machine), but i saved 
fdisk and disklabel output before "reparing" (tar -cpf; newfs 
/dev/ad0s1a; tar -xpf)

>Also try reinstalling the boot blocks using:
>
>mount /dev/ad0s1 /mnt
>boot0cfg -Bv -b /mnt/boot/boot0 ad0
>
>  
>
This didn't help, i had to do newfs on root (a) partition

>If it boots fine, then it is possibly an issue with corrupted
>boot blocks.
>
>  
>