From: Sebastian Riemer <sebastian.riemer@profitbricks.com>
To: linux-raid@vger.kernel.org
Subject: raid1: metadata 1.2 size calculation formula needed
Date: Tue, 17 Jul 2012 11:27:41 +0200 [thread overview]
Message-ID: <5005300D.6000709@profitbricks.com> (raw)
Hi Neil, hi others,
we want to be able to calculate the size of the MD metadata 1.2 + bitmap
size in advance before creating MD RAID 1 volumes.
Is there somewhere a documented formula?
I guess the metadata is at fixed size + 0x1000 at the beginning of the
block device. Then, the bitmap size depends on the bitmap chunksize +
boundary filling.
When growing/shrinking, the bitmap remains at the size from creation and
only the bitmap chunksize is adjusted, right?
Cheers,
Sebastian
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Sebastian Riemer
Linux Kernel Developer
ProfitBricks GmbH • Greifswalder Str. 207 • 10405 Berlin, Germany
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reply other threads:[~2012-07-17 9:27 UTC|newest]
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