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Joey Hess 2019-07-17 14:40:10 -04:00
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I've been back from summer vacation for a couple of days.
My contract to work on git-annex has expired, at least for now,
but I have a lot of Patreon rewards to catch up on anyway. I've been
pushing hard for months on that contract and made a lot of progress on
long-term goals. Plan for the next little while is to cut back a little
bit, and work on easier stuff.
Today I improved how git-annex uses Copy-On-Write when copying between
two repositories on the same drive. It had relied on matching up device
numbers, but it turns out that with eg BTRFS subvolumes, CoW is supported
even when the device numbers don't match. Also, it was using cp even on
filesystems that don't support CoW, which prevented resuming after an
interruption. The new approach is to try to make a CoW copy once per remote,
and if it fails, fall back to rsync.
Today's work was sponsored by Trenton Cronholm
<a href="https://patreon.com/joeyh">on Patreon</a>.