Bup：基于 git packfile 格式，提供快速增量存储、全局重复数据删除，适用于 Linux、FreeBSD、NetBSD、macOS、Solaris 或 Windows（带有 Cygwin 和 WSL）等。
https://gitee.com/mamh-mixed/python-bup/commits/mamh-0.25
- Initialize a backup repository in the specified local directory:
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| # bup -d /path/to/repository init
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Prepare a given directory before taking a backup:
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| # bup -d /path/to/repository index /path/to/directory
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Backup a directory to the repository:
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| # bup -d /path/to/repository save -n backup_name /path/to/directory
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Show the backup snapshots currently stored in the repository:
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| # bup -d /path/to/repository ls
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Restore a specific backup snapshot to a target directory:
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| # bup -d /path/to/repository restore -C /path/to/target_directory backup_name
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下面给出一个实际的使用例子
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| #!/bin/bash
BUP_CMD=${HOME}/bup/bup
BUP_REPO_DIR_NAME="gerrit_bup_repo"
GERRIT_MIRROR_DIR_NAME="gerrit_local_mirror"
GERRIT_MIRROR_DIR=${HOME}/${GERRIT_MIRROR_DIR_NAME} # /home/buildfarm/gerrit_local_mirror
# 要先导出 环境变量 BUP_DIR,设置bup仓库存放的路径, 不然需要使用-d, --bup-dir=BUP_DIR选项设置路径了. 如果都没有 默认路径是
~/.bup
export BUP_DIR=${HOME}/${BUP_REPO_DIR_NAME}/.bup
if [ ! -d "${BUP_DIR}" ]
then
mkdir -p ${BUP_DIR}
${BUP_CMD} init #在index之前还可以执行一下init
fi
# 首先执行 rsync 同步 review_site 目录到本地目录
rsync -avP --delete gerrit@10.12.99.60:/home/gerrit/review_site/ ${GERRIT_MIRROR_DIR}/gerrit_60/review_site/
# 在index之前还可以执行一下init,重复执行init没影响的. 先执行 bup index 然后执行 bup save.
${BUP_CMD} init #在index之前还可以执行一下init
${BUP_CMD} index ${GERRIT_MIRROR_DIR}/gerrit_60
${BUP_CMD} save --strip-path=${GERRIT_MIRROR_DIR} -n gerrit60 ${GERRIT_MIRROR_DIR}/gerrit_60
L_WEEKDAY=$(date +%w)
if [[ "$L_WEEKDAY" = "6" ]]; then
# PAR2 SHOULD BE INSTALLED TO MAKE RECOVERY BLOCKS USEABLE
${BUP_CMD} fsck --par2-ok
# QUICK VERIFICATION
${BUP_CMD} fsck --quick --jobs=4
# QUICK VERIFICATION WITHOUT PAR2
${BUP_CMD} fsck --quick --disable-par2 --jobs=4
# GENERATE RECOVERY BLOCKS FOR NEW FILES
${BUP_CMD} fsck -g --jobs=4
fi
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