Some GridFS files aren't restored properly

[moonhouse]

We see that the data chunks for some of the files stored with GridFS in our database isn't restored properly. We can restore them manually by

require 'bson'
require 'zlib'
require 'digest/md5'

@file_name = '/Users/david.hall/Downloads/2012-09-04_10-30-26.gz'

file = Zlib::GzipReader.open(@file_name)
obj = Marshal.load file.read
file.close

obj.each do |col_name, records|
  next unless col_name == 'fs.chunks'

  records.each do |record|
    if record["files_id"].to_s=='503dffd59701bf0002000004'
      File.open('outfile.jpg', 'w') {|f| f.write(record["data"]) }
    end
  end

end

[moonhouse]

Embarrassingly enough I had a too small MongoHQ instance which fooled me since the chunks were restored at the end.

[alexkravets]

No problem. Glad you've figured it out!