On Saturday April 22, ahbritto@xxxxxxx wrote:
> Hi,
>
> I am unable to add a write-intent bitmap to an existing array. The man
> page indicates:
>
> >When using an internal bitmap, the chunksize is automatically
> >determined to make best use of available space.
>
> Yet, it appears that bitmap being created is too large and goes past the
> end of the partitions provided to the array.
>
> How can I add a write-intent bitmap to this array or will I need to
> re-create this array?
You don't need to recreate the array.
There seems to be some confusion in mdadm as to whether sizes are in
'sectors' or 'kibibytes' - I thought I had sorted all that out, but it
seems not.
You should be able to make it work by setting the chunk size
explicitly to 1024k i.e
mdadm -Gb internal --bitmap-chunk=1024 /dev/md0
Meanwhile I try to sort out the code, make it consistent, and get a
new mdadm out.
Thanks for the report.
NeilBrown
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