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argv minus one

Btrfs is copy-on-write, so keeping an image of the original NTFS does *not* involve duplicating every file on it. The blocks of the NTFS image are shared with the files on the new btrfs.

Which, again, is wild. One file's contents can be *part of* another, much larger file's contents, without duplication (until one of them is written to).

29 November at 23:46 | Open on mastodon.sdf.org
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šŸ„SarahBurnoutšŸ„

@argv_minus_one i ran btrfs-scrub on a 128GB disk converted from reiserfs and it said it was scrubbing 16GB. panicked until i saw df output then remembered that btrfs grows the file system as needed.

29 November at 23:50 | Open on mas.to
argv minus one

@homelessjun

Yeah, there's also an in-place conversion from ext2/3/4.

I seem to recall reading that btrfs is very flexible about where all the on-disk structures are located, which makes it unusually amenable to in-place conversion from other file systems.

30 November at 8:18 | Open on mastodon.sdf.org
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