Re: Problem with gpt partitioning in NetBSD-5.0.2 amd64

[Peter Kerwien <peter%kerwien.homeip.net@localhost>]

On 03/31/2010 10:50 PM, Christos Zoulas wrote:
> In article <4BB3A0F7.6080605%kerwien.homeip.net@localhost>,
> Peter Kerwien  <peter%kerwien.homeip.net@localhost> wrote:
>   
>> I have tested some more with disks in pass-through mode => no problems
>> when creating disklabels or gpt tables. I discovered that I might have
>> to create a MBR with sysid 238 and then run the gpt commands to create
>> partitions. But now when going back to the RAID5 array I'm stuck with:
>>
>> server1# fdisk
>> sd0                                                            
>> Disk: /dev/rsd0d
>> NetBSD disklabel disk geometry:
>> cylinders: 72660, heads: 252, sectors/track: 480 (120960 sectors/cylinder)
>> total sectors: 199126528
>>
>> BIOS disk geometry:
>> cylinders: 1024, heads: 1, sectors/track: 8 (8 sectors/cylinder)
>> total sectors: 8789061120
>>
>> Partition table:
>> 0: GPT Protective MBR (sysid 238)
>>    start 20, size 199126508 (97230 MB, Cyls 2/0/5-24890815)
>>        PBR is not bootable: Bad magic number (0x0000)
>> 1: <UNUSED>
>> 2: <UNUSED>
>> 3: <UNUSED>
>> Bootselector disabled.
>> No active partition.
>> server1# gpt show sd0
>> gpt: unable to open device 'rsd0d': Invalid argument
>>
>> Why cannot I execute any gpt commands? All the /dev/sd0? and /dev/rsd0?
>> devices are there.
>>     
> You probably have created wedges on the disk and if you do that, then
> you cannot access rsd0d directly anymore. You need to unconfigure all
> the wedges (and perhaps even reboot if there is a bug cleaning them up)
> before you can access the underlying disk directly again.
>
> christos
>
>   
Thanks for your answers. Yes I have created wedges, but after that I
have destroyed my array and re-created it. Perhaps the information is
still there somewhere. How do I remove wedges properly?

/Peter