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64 lines
1.8 KiB
Bash
Executable File
64 lines
1.8 KiB
Bash
Executable File
#!/bin/bash
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# This is a simple mirroring script. To save bandwidth it first checks a
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# timestamp via HTTP and only runs rsync when the timestamp differs from the
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# local copy. As of 2016, a single rsync run without changes transfers roughly
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# 6MiB of data which adds up to roughly 250GiB of traffic per month when rsync
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# is run every minute. Performing a simple check via HTTP first can thus save a
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# lot of traffic.
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target="{{ arch32_mirror_dir }}"
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tmp="/srv/syncrepo_arch32-tmp"
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lock="/var/lock/syncrepo_arch32.lck"
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# NOTE: You'll probably want to change this or set it to 0 to disable the limit
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# The default unit is KiB (see man rsync /--bwlimit for more)
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bwlimit=0
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# NOTE: Most people reading this very likely need to change this since
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# rsync.archlinux.org requires you to be a tier 1 mirror
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source='{{ arch32_mirror_source }}'
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lastupdate_url='{{ arch32_mirror_lastupdate }}'
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#### END CONFIG
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[ ! -d "${target}" ] && mkdir -p "${target}"
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[ ! -d "${tmp}" ] && mkdir -p "${tmp}"
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exec 9>"${lock}"
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flock -n 9 || exit
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rsync_cmd() {
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local -a cmd=(rsync -rtlH --safe-links --delete-after ${VERBOSE} "--timeout=600" "--contimeout=60" -p \
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--delay-updates --no-motd "--temp-dir=${tmp}")
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if stty &>/dev/null; then
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cmd+=(-h -v --progress)
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else
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cmd+=("--info=name1")
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fi
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if ((bwlimit>0)); then
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cmd+=("--bwlimit=$bwlimit")
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fi
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"${cmd[@]}" "$@"
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}
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# if we are called without a tty (cronjob) only run when there are changes
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if ! tty -s && [[ -f "$target/lastupdate" ]] && diff -b <(curl -s "$lastupdate_url") "$target/lastupdate" >/dev/null; then
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# keep lastsync file in sync for statistics generated by the Arch Linux website
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rsync_cmd "$source/lastsync" "$target/lastsync"
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exit 0
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fi
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rsync_cmd \
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--exclude='*.links.tar.gz*' \
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--exclude='/other' \
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--exclude='/sources' \
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"${source}" \
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"${target}"
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#echo "Last sync was $(date -d @$(cat ${target}/lastsync))"
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