chore(user/mp3s_to_mkv.sh):Minor syntax cleanup
[BK-2020-03.git] / user / rsync_tranches.sh
1 #!/usr/bin/env bash
2 # Desc: A bash function for splitting up rsync jobs based on size
3
4 echo "ERROR:This is a bash function, not a script." 2>&1; exit 1;
5
6 function rsync_tranches() {
7 # Desc: Runs rsync in parallel across different files size ranges
8 # Example: rsync_tranches -avu --progress --dry-run ./SOURCE/ ./DEST/
9 # Depends: rsync 3.2.7
10 # Version: 0.1.1
11 local -a rsync_opts=();
12 local source dest;
13
14 # Parse arguments until source and destination are found
15 while [[ $# -gt 0 ]]; do
16 case "$1" in
17 # If it's not an option, assume it's the source, then the destination
18 -*)
19 rsync_opts+=("$1");
20 shift;
21 ;;
22 *)
23 ## If not a file or directory, assume option
24 if [[ ! -f "$1" ]] && [[ ! -d "$1" ]]; then
25 rsync_opts+=("$1");
26 shift;
27 fi;
28 ## If valid file or directory, assume source or dest path
29 if [[ -z "$source" ]]; then
30 source="$1";
31 else
32 dest="$1";
33 fi;
34 shift;
35 ;;
36 esac;
37 done;
38
39 # Validate that source and destination are set
40 if [[ -z "$source" ]] || [[ -z "$dest" ]]; then
41 echo "Error: Source and destination directories must be specified." 1>&2;
42 return 1;
43 fi;
44
45 # Tranche 1: 0 to 1MiB-1
46 rsync --min-size='0' --max-size='1MiB-1' "${rsync_opts[@]}" "$source" "$dest" &
47 sleep 2;
48
49 # Tranche 2: 1MiB to 2MiB-1
50 rsync --min-size='1MiB' --max-size='2MiB-1' "${rsync_opts[@]}" "$source" "$dest" &
51
52 # Tranche 3: 2MiB to 4MiB-1
53 rsync --min-size='2MiB' --max-size='4MiB-1' "${rsync_opts[@]}" "$source" "$dest" &
54
55 # Tranche 4: 4MiB to 8MiB-1
56 rsync --min-size='4MiB' --max-size='8MiB-1' "${rsync_opts[@]}" "$source" "$dest" &
57
58 # Tranche 5: 8MiB to 16MiB-1
59 rsync --min-size='8MiB' --max-size='16MiB-1' "${rsync_opts[@]}" "$source" "$dest" &
60
61 # Tranche 6: 16MiB to 32MiB-1
62 rsync --min-size='16MiB' --max-size='32MiB-1' "${rsync_opts[@]}" "$source" "$dest" &
63
64 # Tranche 7: 32MiB to 64MiB-1
65 rsync --min-size='32MiB' --max-size='64MiB-1' "${rsync_opts[@]}" "$source" "$dest" &
66
67 # Tranche 8: 64MiB to 128MiB-1
68 rsync --min-size='64MiB' --max-size='128MiB-1' "${rsync_opts[@]}" "$source" "$dest" &
69
70 # Tranche 9: 128MiB to 256MiB-1
71 rsync --min-size='128MiB' --max-size='256MiB-1' "${rsync_opts[@]}" "$source" "$dest" &
72
73 # Tranche 10: 256MiB to 512MiB-1
74 rsync --min-size='256MiB' --max-size='512MiB-1' "${rsync_opts[@]}" "$source" "$dest" &
75
76 # Tranche 11: 512MiB to 1024MiB-1
77 rsync --min-size='512MiB' --max-size='1024MiB-1' "${rsync_opts[@]}" "$source" "$dest" &
78
79 # Tranche 12: Greater than 1024MiB
80 rsync --min-size='1024MiB' --max-size='8192PiB-1' "${rsync_opts[@]}" "$source" "$dest" &
81
82 wait # Wait for all rsync processes to complete
83 };
84 export -f rsync_tranches;
85
86 # Author: Steven Baltakatei Sandoval
87 # License: GPLv3+