Re: assemble vs create an array.......

[Dragos <dragos@mpigani.org>]

Thank you.
I want to make sure I understand.

1- Does it matter which permutation of drives I use for xfs_repair (as 
long as it tells me that the Structure needs cleaning)? When it comes to 
linux I consider myself at intermediate level, but I am a beginner when 
it comes to raid and filesystem issues.

2- After I do it, assuming that it worked, how do I reintegrate the 
'missing' drive while keeping my data?

Thank you for you time.
Dragos


David Greaves wrote:
> Dragos wrote:
>   
>> Thank you for your very fast answers.
>>
>> First I tried 'fsck -n' on the existing array. The answer was that If I
>> wanted to check a XFS partition I should use 'xfs_check'. That seems to
>> say that my array was partitioned with xfs, not reiserfs. Am I correct?
>>
>> Then I tried the different permutations:
>> mdadm --create /dev/md0 --raid-devices=3 --level=5 missing /dev/sda1
>> /dev/sdb1
>> mount /dev/md0 temp
>> mdadm --stop --scan
>>
>> mdadm --create /dev/md0 --raid-devices=3 --level=5 /dev/sda1 missing
>> /dev/sdb1
>> mount /dev/md0 temp
>> mdadm --stop --scan
>>
>>     
> [etc]
>
>   
>> With some arrays mount reported:
>>   mount: you must specify the filesystem type
>> and with others:
>>   mount: Structure needs cleaning
>>
>> No choice seems to have been successful.
>>     
>
> OK, not as good as you could have hoped for.
>
> Make sure you have the latest xfs tools.
>
> you may want to try xfs_repair and you can use the -n (I think - check man page)
> option.
>
> You may need to force it to ignore the log
>
> David
>
>
>
>