A simple CLI to generate car file and compute commp at the same time.
$ ./go-generate-car -h
NAME:
generate-car - generate car archive from list of files and compute commp in the mean time
USAGE:
generate-car [global options] command [command options] [arguments...]
COMMANDS:
help, h Shows a list of commands or help for one command
GLOBAL OPTIONS:
--input value, -i value File to read list of files, or '-' if from stdin (default: "-")
--piece-size value, -s value Target piece size, default to minimum possible value (default: 0)
--out-dir value, -o value Output directory to save the car file (default: ".")
--tmp-dir value, -t value Optionally copy the files to a temporary (and much faster) directory
--parent value, -p value Parent path of the dataset
--help, -h show help (default: false)The input file can be a text file that contains a list of file information SORTED by the path. i.e.
[
{
"Path": "test/test.txt",
"Size": 4038,
"Start": 1000, # Inclusive
"End": 2000 # Exclusive
},
{
"Path": "test/test2.txt",
"Size": 3089
}
]The tmp dir is useful when the dataset source is on slow storage such as NFS or S3FS/Goofys mount.