Metadata upgradable?

Metadata upgradable?

[Oliver]

Hi,

I've made the assumption last year or so that I won't ever be having an 
array of more then 2Tb. The irony is of course that I thought of this 
whilst building an array of 4x500gb. I've decided to stick an extra 
500gb and expand the array a bit, and now I might bump into that 2TB 
limitation of 0.9 superblocks.

I've read the manpage and it mentions something cryptic about superblock 
1.2 restrictions, but I'm sure it's not something i'll have to worry 
about. What I am curious about however is wether I can upgrade my 
metadata on my raid5 array?

Thanks,

oliver

Re: Metadata upgradable?

[Justin Piszcz]

On Wed, 2 Jul 2008, Oliver wrote:

> Hi,
>
> I've made the assumption last year or so that I won't ever be having an array 
> of more then 2Tb. The irony is of course that I thought of this whilst 
> building an array of 4x500gb. I've decided to stick an extra 500gb and expand 
> the array a bit, and now I might bump into that 2TB limitation of 0.9 
> superblocks.
>
> I've read the manpage and it mentions something cryptic about superblock 1.2 
> restrictions, but I'm sure it's not something i'll have to worry about. What 
> I am curious about however is wether I can upgrade my metadata on my raid5 
> array?
>
> Thanks,
>
> oliver
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Hmm I used 0.93.00 to upgrade from 1.8TiB to 3.2TiB using 400GiB drives 
without an issue, what 0.9x.xx are you running?

I continue to use 0.93.00 because it lets me boot using LILO in a RAID1 
configuration and there still seems like there is a lot of confusion > 
0.9x..

Justin.

Re: Metadata upgradable?

[Richard Scobie]

> On Wed, 2 Jul 2008, Oliver wrote:
> 
>> Hi,
>>
>> I've made the assumption last year or so that I won't ever be having 
>> an array of more then 2Tb. The irony is of course that I thought of 
>> this whilst building an array of 4x500gb. I've decided to stick an 
>> extra 500gb and expand the array a bit, and now I might bump into that 
>> 2TB limitation of 0.9 superblocks.

The 2TB limitation as I understand it, is for individual members of an 
array, not the total size of it.

Regards,

Richard