[pbs-devel] [PATCH vma-to-pbs v3 2/6] add support for bulk import of a dump directory

[Filip Schauer]

On 29/10/2024 11:41, Fabian Grünbichler wrote:
>> +        let re = Regex::new(
>> +            r"vzdump-qemu-(\d+)-(\d{4}_\d{2}_\d{2}-\d{2}_\d{2}_\d{2}).vma(|.zst|.lzo|.gz)$",
>> +        )?;
>> +
>> +        let mut vmas = Vec::new();
>> +
>> +        for entry in read_dir(dump_dir_path)? {
>> +            let entry = entry?;
>> +            let path = entry.path();
>> +
>> +            if !path.is_file() {
>> +                continue;
>> +            }
>> +
>> +            if let Some(file_name) = path.file_name().and_then(|n|  n.to_str()) {
> if we find a file that is not valid UTF-8, should we warn about it?


Any file name that contains invalid UTF-8 will not get matched by the
regex anyway and v4 of this patch adds a debug message logging any file
that does not match the regex.


On 29/10/2024 11:41, Fabian Grünbichler wrote:
>> +            let process = cmd.arg(vma_file_path).stdout(Stdio::piped()).spawn()?;
>> +            let stdout = process.stdout.expect("Failed to capture stdout");
>> +            Box::new(BufReader::new(stdout))
> did you test whether with_capacity and a higher buffer size than 8K improves performance?
>
>> +        }
>> +        None => match &backup_args.vma_file_path {
>> +            Some(vma_file_path) => matchFile::open(vma_file_path)  {
>> +                Err(why) => return Err(anyhow!("Couldn't open file: {}", why)),
>> +                Ok(file) => Box::new(BufReader::new(file)),
> same here


Tested buffer sizes from 1024 up to 1048576 and it made no measurable
performance difference.