我写了一个小的 bash (4) 脚本来备份我的 windows pc 的共享。目前我只备份一个共享,并且备份只对 root 可见。请给我一些改进那段代码的提示:
#!/bin/bash
# Script to back up directories on several windows machines
# Permissions, owners, etc. are preserved (-av option)
# Only differences are submitted
# Execute this script from where you want
# Make sure only root can run our script
if [ "$(id -u)" != "0" ]; then
echo "This script must be run as root" 1>&2
exit 1
fi
# Specify the current date for the log-file name
current_date=$(date +%Y-%m-%d_%H%M%S)
# Specify the path to a list of file patterns not included in backup
script_path=$(dirname $(readlink -f $0))
rsync_excludes=$script_path/rsync_exclude.patterns
# Specify mount/rsync options
credential_file="/root/.smbcredentials"
# Specify windows shares
smb_shares=( //192.168.0.100/myFiles )
# Specify the last path component of the directory name to backup shares
# content into
smb_share_ids=( "blacksmith" )
# Specify with trailing '/' to transfer only the dir content
rsync_src="/mnt/smb_backup_mount_point/"
rsync_dst_root=(~/BACKUPS)
# Check if all arrays have the same size
if [ "${#smb_shares[@]}" -ne "${#smb_share_ids[@]}" ]; then
echo "Please specify one id for each samba share!"
exit 1
fi
# Run foor loop to sync all specified shares
for (( i = 0 ; i < ${#smb_shares[@]} ; i++ ))
do
# Check if mount point already exists
echo -n "Checking if mount point exists ... "
if [ -d $rsync_src ]; then
echo "Exists, exit!"
exit 1
else
echo "No, create it"
mkdir $rsync_src
fi
# Try to mount share and perform rsync in case of success
echo -n "Try to mount ${smb_shares[$i]} to $rsync_src ... "
mount -t cifs ${smb_shares[$i]} $rsync_src -o credentials=/root/.smbcredentials,iocharset=utf8,uid=0,file_mode=0600,dir_mode=0600
if [ "$?" -eq "0" ]; then
echo "Success"
# Specify the log-file name
rsync_logfile="$rsync_dst_root/BUP_${smb_share_ids[$i]}_$current_date.log"
# Build rsync destination root
rsync_dst=( $rsync_dst_root"/"${smb_share_ids[$i]} )
# Check if rsync destination root already exists
echo -n "Check if rsync destination root already exists ... "
if [ -d $rsync_dst ]; then
echo "Exists"
else
echo "Does not exist, create it"
mkdir -p $rsync_dst
fi
# Run rsync process
# -av > archieve (preserve owner, permissions, etc.) and verbosity
# --stats > print a set of statistics showing the effectiveness of the rsync algorithm for your files
# --bwlimit=KBPS > transfer rate limit - 0 defines no limit
# --progress > show progress
# --delete > delete files in $DEST that have been deletet in $SOURCE
# --delete-after > delete files at the end of the file transfer on the receiving machine
# --delete-excluded > delete excluded files in $DEST
# --modify-window > files differ first after this modification time
# --log-file > save log file
# --exclude-from > exclude everything from within an exclude file
rsync -av --stats --bwlimit=0 --progress --delete --delete-after --delete-excluded --modify-window=2 --log-file=$rsync_logfile --exclude-from=$rsync_excludes $rsync_src $rsync_dst
fi
# Unmount samba share
echo -n "Unmount $rsync_src ... "
umount $rsync_src
[ "$?" -eq "0" ] && echo "Success"
# Delete mount point
echo -n "Delete $rsync_src ... "
rmdir $rsync_src
[ "$?" -eq "0" ] && echo "Success"
done
现在我需要一些关于以下主题的帮助:
- 检查是否存在共享、挂载点等条件(制作防呆脚本)
- mount 命令 - 是否正确,我是否给予正确的权限?
- 如果只有 root 可以看到备份文件,是否有比用户的主目录更好的位置?
- 您认为集成其他文件系统的备份是否也有帮助?
- 尽管我有一个千兆网络系统,但备份相当慢(大约 13mb/s)——这可能是因为 rsync 的 ssh 加密?安装共享的 linux 系统具有 pci sata 控制器和旧主板、1gb ram 和 athlon xp 2400+。速度慢还有其他原因吗?
如果您有更多可以在这里解决的主题 - 欢迎发布它们。我有兴趣 =)
干杯
-Blackjacx