How to get physical HDD from path? (Unix)

How to get physical HDD from path? (Unix)

There is a java program that executes external programms on various physical disks. What I want to do is to queue tasks (so only 1 task is being done on 1 physical disk). I have a String path to the executable. How to learn to which HDD that executable belongs? (We're talking Ubuntu here).

Thank you very much in advance for any help with this.

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ps: I am not looking for any internal hdd serial number, I'm just looking for some simple solution

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edit: I found this: http://www.cyberciti.biz/faq/linux-unix-command-findout-on-which-partition-file-directory-exits and this: http://tuxtweaks.com/2010/03/command-line-basics-list-hard-drives-by-uuid/
However, is there a way to do it without OS dependent functions (purely in java)

First, read the mtab file (usually stored in /etc/) to find all the current mount points and their devices. Then create a File object, and get its parent until you've found a match. The resulting device tells you which hard drive it is, but it can also be a virtual device such as proc or udev.

Justin Thomas wrote:
edit: I found this: http://www.cyberciti.biz/faq/linux-unix-command-findout-on-which-partition-file-directory-exits and this: http://tuxtweaks.com/2010/03/command-line-basics-list-hard-drives-by-uuid/
However, is there a way to do it without OS dependent functions (purely in java)

Unfortunately, I don't think you can. The unix filesystem shows up as a single filesystem, starting from the root directory.... and there doesn't seem to be a way to get the mounts from the core libs.

For Windows, you can get all the roots with the listRoots() method call -- in which case, it returns a root file for each drive letter.

Henry

Thank you for your replies. I already coded the part to get UUID. Now I need to figure out how to synchronize the access... I'll think about it; maybe I will be able to do it alone, without bothering you again for help.

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for ppl who use "Search" and find this, the code is this:

public static String getUUIDFromPath(String pathToFile) {
        // needs commands: df and blkid to be in path
        String UUID;
        
        // 1. Let's do smth like this:
        // df /path/to/file/file.ext | awk '/^\/dev/ {print $1}'
        List<String> getPartition = new ArrayList<String>();
        getPartition.add("df");
        getPartition.add(pathToFile);
        ProcessCommon.execute(getPartition); // my own simple wrapper to use ProcessBuilder instead of new Runnable.exec()
        String partition = ProcessCommon.getOutput(); // my own simple wrapper for catching the output stream of that Runnable.exec()
        partition = partition.split("\n")[1].split("\\t")[0].split("\\s")[0];
        
        // 2. Let's pipe the result to smth like this:
        // blkid -u filesystem partition | grep -o \"[^\"]*\" | head -n 1 | sed 's/"//g'
        List<String> getUUID = new ArrayList<String>();
        getUUID.add("blkid");
        getUUID.add("-u" + "filesystem");
        getUUID.add(partition);
        ProcessCommon.execute(getUUID);
        UUID = ProcessCommon.getOutput();
        return UUID.replaceFirst("[^\"]*\"", "").replaceAll("\".*", "");
    }