#include "simgrid/plugins/file_system.h"
#include "simgrid/s4u/Actor.hpp"
+#include "simgrid/s4u/Engine.hpp"
#include "src/surf/HostImpl.hpp"
#include "src/surf/xml/platf_private.hpp"
#include "xbt/config.hpp"
Disk* d = nullptr;
size_t longest_prefix_length = 0;
for (auto const& disk : host->get_disks()) {
- std::string current_mount = disk->extension<FileSystemDiskExt>()->get_mount_point();
+ std::string current_mount;
+ if (disk->get_host() != host)
+ current_mount = disk->extension<FileSystemDiskExt>()->get_mount_point(disk->get_host());
+ else
+ current_mount = disk->extension<FileSystemDiskExt>()->get_mount_point();
mount_point_ = fullpath_.substr(0, current_mount.length());
if (mount_point_ == current_mount && current_mount.length() > longest_prefix_length) {
/* The current mount name is found in the full path and is bigger than the previous*/
if (size_ == 0) /* Nothing to read, return */
return 0;
sg_size_t read_size = 0;
-
+ Host* host = nullptr;
if (local_storage_) {
/* Find the host where the file is physically located and read it */
- Host* host = local_storage_->get_host();
+ host = local_storage_->get_host();
XBT_DEBUG("READ %s on disk '%s'", get_path(), local_storage_->get_cname());
// if the current position is close to the end of the file, we may not be able to read the requested size
read_size = local_storage_->read(std::min(size, size_ - current_position_));
current_position_ += read_size;
-
- if (host->get_name() != Host::current()->get_name() && read_size > 0) {
- /* the file is hosted on a remote host, initiate a communication between src and dest hosts for data transfer */
- XBT_DEBUG("File is on %s remote host, initiate data transfer of %llu bytes.", host->get_cname(), read_size);
- host->send_to(Host::current(), read_size);
- }
}
if (local_disk_) {
/* Find the host where the file is physically located and read it */
+ host = local_disk_->get_host();
XBT_DEBUG("READ %s on disk '%s'", get_path(), local_disk_->get_cname());
// if the current position is close to the end of the file, we may not be able to read the requested size
read_size = local_disk_->read(std::min(size, size_ - current_position_));
current_position_ += read_size;
}
+ if (host->get_name() != Host::current()->get_name() && read_size > 0) {
+ /* the file is hosted on a remote host, initiate a communication between src and dest hosts for data transfer */
+ XBT_DEBUG("File is on %s remote host, initiate data transfer of %llu bytes.", host->get_cname(), read_size);
+ host->send_to(Host::current(), read_size);
+ }
+
return read_size;
}
if (size == 0) /* Nothing to write, return */
return 0;
sg_size_t write_size = 0;
+ Host* host = nullptr;
- if (local_storage_) {
- /* Find the host where the file is physically located (remote or local)*/
- Host* host = local_storage_->get_host();
+ /* Find the host where the file is physically located (remote or local)*/
+ if (local_storage_)
+ host = local_storage_->get_host();
+ if (local_disk_)
+ host = local_disk_->get_host();
- if (host->get_name() != Host::current()->get_name()) {
- /* the file is hosted on a remote host, initiate a communication between src and dest hosts for data transfer */
- XBT_DEBUG("File is on %s remote host, initiate data transfer of %llu bytes.", host->get_cname(), size);
- Host::current()->send_to(host, size);
- }
+ if (host->get_name() != Host::current()->get_name()) {
+ /* the file is hosted on a remote host, initiate a communication between src and dest hosts for data transfer */
+ XBT_DEBUG("File is on %s remote host, initiate data transfer of %llu bytes.", host->get_cname(), size);
+ Host::current()->send_to(host, size);
+ }
+ if (local_storage_) {
XBT_DEBUG("WRITE %s on disk '%s'. size '%llu/%llu' '%llu:%llu'", get_path(), local_storage_->get_cname(), size,
size_, sg_storage_get_size_used(local_storage_), sg_storage_get_size(local_storage_));
// If the storage is full before even starting to write
host.extension_set<FileDescriptorHostExt>(new FileDescriptorHostExt());
}
+static void on_platform_created()
+{
+ for (auto const& host : simgrid::s4u::Engine::get_instance()->get_all_hosts()) {
+ const char* remote_disk_str = host->get_property("remote_disk");
+ if (remote_disk_str) {
+ std::vector<std::string> tokens;
+ boost::split(tokens, remote_disk_str, boost::is_any_of(":"));
+ std::string mount_point = tokens[0];
+ simgrid::s4u::Host* remote_host = simgrid::s4u::Host::by_name_or_null(tokens[2]);
+ xbt_assert(remote_host, "You're trying to access a host that does not exist. Please check your platform file");
+
+ simgrid::s4u::Disk* disk = nullptr;
+ for (auto const& d : remote_host->get_disks())
+ if (d->get_name() == tokens[1]) {
+ disk = d;
+ break;
+ }
+
+ xbt_assert(disk, "You're trying to mount a disk that does not exist. Please check your platform file");
+ disk->extension<FileSystemDiskExt>()->add_remote_mount(remote_host, mount_point);
+ host->add_disk(disk);
+
+ XBT_DEBUG("Host '%s' wants to mount a remote disk: %s of %s mounted on %s", host->get_cname(), disk->get_cname(),
+ remote_host->get_cname(), mount_point.c_str());
+ XBT_DEBUG("Host '%s' now has %lu disks", host->get_cname(), host->get_disks().size());
+ }
+ }
+}
+
+static void on_simulation_end()
+{
+ XBT_DEBUG("Simulation is over, time to unregister remote disks if any");
+ for (auto const& host : simgrid::s4u::Engine::get_instance()->get_all_hosts()) {
+ const char* remote_disk_str = host->get_property("remote_disk");
+ if (remote_disk_str) {
+ std::vector<std::string> tokens;
+ boost::split(tokens, remote_disk_str, boost::is_any_of(":"));
+ XBT_DEBUG("Host '%s' wants to unmount a remote disk: %s of %s mounted on %s", host->get_cname(),
+ tokens[1].c_str(), tokens[2].c_str(), tokens[0].c_str());
+ host->remove_disk(tokens[1]);
+ XBT_DEBUG("Host '%s' now has %lu disks", host->get_cname(), host->get_disks().size());
+ }
+ }
+}
+
/* **************************** Public interface *************************** */
void sg_storage_file_system_init()
{
FileDescriptorHostExt::EXTENSION_ID = simgrid::s4u::Host::extension_create<FileDescriptorHostExt>();
simgrid::s4u::Host::on_creation.connect(&on_host_creation);
}
+ simgrid::s4u::on_platform_created.connect(&on_platform_created);
+ simgrid::s4u::on_simulation_end.connect(&on_simulation_end);
}
sg_file_t sg_file_open(const char* fullpath, void* data)
