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From: Lorenzo Perone <lopez.on.the.lists@yellowspace.net>
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To: Mykola Golub <to.my.trociny@gmail.com>
Subject: Re: Mounting a filesystem on a HAST provider without HAST
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On 29.11.14 13:31, Mykola Golub wrote:

> You can obtain the offset by running `hastctl dump' command (localcnt
> field).
>
> If you still want to calulate it yourself, see how hastctl calculates
> hr_localoff in sbin/hastctl/hastctl.c:create_one() with the help of
> sbin/hastd/metadata.c:activemap_calc_ondisk_size(). In short, you need
> to calculate number of extents (mediasize / extentsize) and reserve a
> bit for every extent in the map, rounding up to the sector size.

Thanks a lot for both pointers! hastctl dump will do perfectly well for 
now, it can easilly be wrapped in a local shell script.

Greetings and Regards,

Lorenzo