Re: checkums when converting from ext[234] to Btrfs

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On Wed, Jan 04, 2012 at 03:22:11PM +0100, pubny wrote:
> Could someone help me with a clarification whether the btrfs-convert
> tool creates checksums on blocks of the existing ext[234] filesystem?

yes, it does checksum by default and you can switch it off with the '-d'
option.

> Any experiences how the size and the filesystem utilization (used vs.
> total diskspace) impacts the time of conversion?

I don't have numbers but it needs to go through extX metadata, read and
checksum data blocks, then write btrfs metadata. Nothing where a
significant time could be saved (except switching off the checksums).


david
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