Re: Problem with mdadm 2.6.7

On Sunday July 27, tmb@mandriva.org wrote:

as for --bitmap, can it be added to an existing array ?

Yes.

What is the better choice, bitmap=internal or bitmap=<some_file> ?

Internal is easier.

The command is
   mdadm --grow /dev/mdXXX --bitmap=internal

This could have a negative impact on performance.  The degree depends
a lot on your workload.
If you notice a reduction in write speed that is not acceptable, and
if removing the bitmap (mdadm --grow /dev/mdXXX --bitmap=none) fixes
the problem, then we can try to find an alternate solution.

I'd hate to have to recreate the array, as I have about 1.2GB of data on 
it...

There is no need for that.

NeilBrown