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#!/usr/bin/ruby
#
# Convert root-owned snapshots to being owned by the `byteback` user.
#
def s(*args)
#print c.join(" ") + "\n"
system(*args) || exit(1)
end
snapshots = `sudo btrfs subvolume list /store/backups`.split("\n").map { |n| n.split(" ")[8] }
snapshots.each do |n|
d = "/store/backups/#{n}"
s "sudo -u byteback /sbin/btrfs subvolume snapshot #{d} #{d}-tmp"
s "sudo /sbin/btrfs subvolume delete #{d}"
s "sudo -u byteback /sbin/btrfs subvolume snapshot #{d}-tmp #{d}"
s "sudo -u byteback /sbin/btrfs subvolume delete #{d}-tmp"
end
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