Commit 1b9095b0 authored by Nafi3's avatar Nafi3 Committed by Marc Vef
Browse files

Adding random I/O and sparse file support

parent 236e9201

ifs/src/daemon/adafs_ops/data.cpp

+2 −2
Original line number Diff line number Diff line
@@ -95,8 +95,8 @@ void read_file_abt(void* _arg) { 
    chnk_path /= fmt::FormatInt(arg->chnk_id).c_str();;



    int fd = open(chnk_path.c_str(), R_OK);

    if (fd < 0) {

        read_size = static_cast<size_t>(EIO);

    if (fd < 0) { //the case that file does not exist e.g sparse file or random write

        read_size = static_cast<size_t>(0); 

        ABT_eventual_set(arg->eventual, &read_size, sizeof(size_t));

        return;

    }

ifs/src/daemon/adafs_ops/metadentry.cpp

+2 −4
Original line number Diff line number Diff line
@@ -108,7 +108,7 @@ int get_metadentry_size(const string& path, size_t& ret_size) { 
 * @return the updated size

 */

int update_metadentry_size(const string& path, size_t io_size, off64_t offset, bool append, size_t& read_size) {

    // XXX This function has to be completely atomic. Do we need transactions here? or a separate locking db?

    // XXX This function will be replaced soon by the rocksdb function - just to test for the random IO

#ifdef LOG_TRACE

    db_iterate_all_entries();

#endif
@@ -118,15 +118,13 @@ int update_metadentry_size(const string& path, size_t io_size, off64_t offset, b 
        return ENOENT;

    }

    Metadata md{path, val};

    if (static_cast<unsigned long>(offset) > md.size()) // Writing beyond file dimensions is prohibited for now XXX

        return EFAULT;

    // update io_size

    if (append)

        md.size(md.size() + io_size);

    else { // if no append but io_size exceeds the file's size, update the size correspondingly

        if (io_size + static_cast<unsigned long>(offset) > md.size())

            md.size(io_size + offset);

        else {

        else { // if not keep the current size

            read_size = md.size();

            return 0;

        }

ifs/src/preload/adafs_functions.cpp

+1 −1
Original line number Diff line number Diff line
@@ -200,7 +200,7 @@ ssize_t adafs_pread_ws(int fd, void* buf, size_t count, off64_t offset) { 
    init_ld_env_if_needed();

    auto adafs_fd = file_map.get(fd);

    auto path = make_shared<string>(adafs_fd->path());



    memset(buf, 0, sizeof(char)*count);

    auto ret = rpc_send_read(*path, buf, offset, count);

    if (ret < 0) {

        ld_logger->warn("{}() rpc_send_read failed with ret {}", __func__, ret);

ifs_test/wr_test.cpp

+1 −1
Original line number Diff line number Diff line
@@ -40,7 +40,7 @@ int main(int argc, char* argv[]) { 
        cerr << "Error opening file (write)" << endl;

        return -1;

    }

    auto nw = write(fd, buffIn, strlen(buffIn));

    auto nw = pwrite(fd, buffIn, strlen(buffIn), 10000);

    if(nw != strlen(buffIn)){

        cerr << "Error writing file" << endl;

        return -1;