[WBEL-users] Adding to RAID 1, only sees new partition as spare... {Scanned} {Scanned}

[Scott Silva]

Benjamin Smith wrote:

>It appears that it's simply not possible to "add" drives to a RAID 1 array. 
>raidreconf does not support RAID 1. 
>
>I had to start from scratch, reinitialize the array with both drives, run 
>mke2fs, and recopy the data back over from the original drive. It took 
>another 17 hours to copy everything, (ugh) but it's all up and working fine 
>now. 
>
>Thanks! 
>
>-Ben 
>
>On Tuesday 17 May 2005 15:15, Scott Silva wrote:
>  
>
>>Benjamin Smith wrote:
>>    
>>
>>>I have a server that does backups, and I want to replace an existing 160 
>>>      
>>>
>GB 
>  
>
>>>drive, with a RAID 1 300 GB array. 
>>>
>>>I don't have enough IDE slots to mount all at the same time. So, I 
>>>      
>>>
>installed a 
>  
>
>>>single 300 GB HDD, configured it as /dev/md0 RAID 1, made a filesystem, 
>>>mounted, and copied all the data over. It's seen and mounts fine with all 
>>>data present. 
>>>
>>>Now, I've removed the original 160 GB HDD, and put the other new 300 GB in 
>>>it's place. 
>>>
>>>I've tried and tried, and I can't get the 2nd 300 GB drive to sync up to 
>>>      
>>>
>the 
>  
>
>>>first 300 GB drive. It keeps seeing it as a spare... 
>>>
>>>What am I missing? 
>>>
>>>1st 300 GB partn in array (with data on it) /dev/hdh1 
>>>2nd 300 GB partn in array (seen as spare) /dev/hde1 
>>>      
>>>
>>Did you properly partition the new drive as type fd (linux raid)?
>>
>>Maybe you should use mdadm. I have had better luck with it over raidtools.
>>you would use ;
>>
>>sfdisk -d /dev/hdh |sfdisk /dev/hde
>>
>>to clone the partition data, then
>>
>>mdadm -a /dev/md0 /dev/hde1
>>
>>
>>    
>>
I know you can create a raid1 array with only one drive and add the
other drive later, because I have done it.


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