2 use std
::path
::{Path, PathBuf}
;
3 use std
::os
::unix
::io
::AsRawFd
;
5 use anyhow
::{bail, format_err, Error}
;
8 use openssl
::ssl
::{SslMethod, SslAcceptor, SslFiletype}
;
9 use tokio_stream
::wrappers
::ReceiverStream
;
11 use proxmox
::try_block
;
12 use proxmox
::api
::RpcEnvironmentType
;
24 rotate_task_log_archive
,
26 tools
::systemd
::time
::{
33 use proxmox_backup
::api2
::types
::Authid
;
34 use proxmox_backup
::configdir
;
35 use proxmox_backup
::buildcfg
;
36 use proxmox_backup
::server
;
37 use proxmox_backup
::auth_helpers
::*;
38 use proxmox_backup
::tools
::{
47 PROXMOX_BACKUP_TCP_KEEPALIVE_TIME
,
51 use proxmox_backup
::api2
::pull
::do_sync_job
;
52 use proxmox_backup
::server
::do_verification_job
;
53 use proxmox_backup
::server
::do_prune_job
;
55 fn main() -> Result
<(), Error
> {
56 proxmox_backup
::tools
::setup_safe_path_env();
58 let backup_uid
= proxmox_backup
::backup
::backup_user()?
.uid
;
59 let backup_gid
= proxmox_backup
::backup
::backup_group()?
.gid
;
60 let running_uid
= nix
::unistd
::Uid
::effective();
61 let running_gid
= nix
::unistd
::Gid
::effective();
63 if running_uid
!= backup_uid
|| running_gid
!= backup_gid
{
64 bail
!("proxy not running as backup user or group (got uid {} gid {})", running_uid
, running_gid
);
67 proxmox_backup
::tools
::runtime
::main(run())
70 async
fn run() -> Result
<(), Error
> {
71 if let Err(err
) = syslog
::init(
72 syslog
::Facility
::LOG_DAEMON
,
73 log
::LevelFilter
::Info
,
74 Some("proxmox-backup-proxy")) {
75 bail
!("unable to inititialize syslog - {}", err
);
78 // Note: To debug early connection error use
79 // PROXMOX_DEBUG=1 ./target/release/proxmox-backup-proxy
80 let debug
= std
::env
::var("PROXMOX_DEBUG").is_ok();
82 let _
= public_auth_key(); // load with lazy_static
83 let _
= csrf_secret(); // load with lazy_static
85 let mut config
= ApiConfig
::new(
86 buildcfg
::JS_DIR
, &proxmox_backup
::api2
::ROUTER
, RpcEnvironmentType
::PUBLIC
)?
;
88 config
.add_alias("novnc", "/usr/share/novnc-pve");
89 config
.add_alias("extjs", "/usr/share/javascript/extjs");
90 config
.add_alias("qrcodejs", "/usr/share/javascript/qrcodejs");
91 config
.add_alias("fontawesome", "/usr/share/fonts-font-awesome");
92 config
.add_alias("xtermjs", "/usr/share/pve-xtermjs");
93 config
.add_alias("locale", "/usr/share/pbs-i18n");
94 config
.add_alias("widgettoolkit", "/usr/share/javascript/proxmox-widget-toolkit");
95 config
.add_alias("docs", "/usr/share/doc/proxmox-backup/html");
97 let mut indexpath
= PathBuf
::from(buildcfg
::JS_DIR
);
98 indexpath
.push("index.hbs");
99 config
.register_template("index", &indexpath
)?
;
100 config
.register_template("console", "/usr/share/pve-xtermjs/index.html.hbs")?
;
102 let mut commando_sock
= server
::CommandoSocket
::new(server
::our_ctrl_sock());
104 config
.enable_file_log(buildcfg
::API_ACCESS_LOG_FN
, &mut commando_sock
)?
;
106 let rest_server
= RestServer
::new(config
);
108 //openssl req -x509 -newkey rsa:4096 -keyout /etc/proxmox-backup/proxy.key -out /etc/proxmox-backup/proxy.pem -nodes
109 let key_path
= configdir
!("/proxy.key");
110 let cert_path
= configdir
!("/proxy.pem");
112 let mut acceptor
= SslAcceptor
::mozilla_intermediate_v5(SslMethod
::tls()).unwrap();
113 acceptor
.set_private_key_file(key_path
, SslFiletype
::PEM
)
114 .map_err(|err
| format_err
!("unable to read proxy key {} - {}", key_path
, err
))?
;
115 acceptor
.set_certificate_chain_file(cert_path
)
116 .map_err(|err
| format_err
!("unable to read proxy cert {} - {}", cert_path
, err
))?
;
117 acceptor
.check_private_key().unwrap();
119 let acceptor
= Arc
::new(acceptor
.build());
121 let server
= daemon
::create_daemon(
122 ([0,0,0,0,0,0,0,0], 8007).into(),
125 let connections
= accept_connections(listener
, acceptor
, debug
);
126 let connections
= hyper
::server
::accept
::from_stream(ReceiverStream
::new(connections
));
129 .and_then(|_
| hyper
::Server
::builder(connections
)
131 .with_graceful_shutdown(server
::shutdown_future())
132 .map_err(Error
::from
)
134 .map_err(|err
| eprintln
!("server error: {}", err
))
138 "proxmox-backup-proxy.service",
141 server
::write_pid(buildcfg
::PROXMOX_BACKUP_PROXY_PID_FN
)?
;
142 daemon
::systemd_notify(daemon
::SystemdNotify
::Ready
)?
;
144 let init_result
: Result
<(), Error
> = try_block
!({
145 server
::register_task_control_commands(&mut commando_sock
)?
;
146 commando_sock
.spawn()?
;
147 server
::server_state_init()?
;
151 if let Err(err
) = init_result
{
152 bail
!("unable to start daemon - {}", err
);
155 start_task_scheduler();
156 start_stat_generator();
159 log
::info
!("server shutting down, waiting for active workers to complete");
160 proxmox_backup
::server
::last_worker_future().await?
;
161 log
::info
!("done - exit server");
166 fn accept_connections(
167 listener
: tokio
::net
::TcpListener
,
168 acceptor
: Arc
<openssl
::ssl
::SslAcceptor
>,
170 ) -> tokio
::sync
::mpsc
::Receiver
<Result
<std
::pin
::Pin
<Box
<tokio_openssl
::SslStream
<tokio
::net
::TcpStream
>>>, Error
>> {
172 const MAX_PENDING_ACCEPTS
: usize = 1024;
174 let (sender
, receiver
) = tokio
::sync
::mpsc
::channel(MAX_PENDING_ACCEPTS
);
176 let accept_counter
= Arc
::new(());
178 tokio
::spawn(async
move {
180 match listener
.accept().await
{
182 eprintln
!("error accepting tcp connection: {}", err
);
184 Ok((sock
, _addr
)) => {
185 sock
.set_nodelay(true).unwrap();
186 let _
= set_tcp_keepalive(sock
.as_raw_fd(), PROXMOX_BACKUP_TCP_KEEPALIVE_TIME
);
187 let acceptor
= Arc
::clone(&acceptor
);
189 let ssl
= match openssl
::ssl
::Ssl
::new(acceptor
.context()) {
192 eprintln
!("failed to create Ssl object from Acceptor context - {}", err
);
196 let stream
= match tokio_openssl
::SslStream
::new(ssl
, sock
) {
197 Ok(stream
) => stream
,
199 eprintln
!("failed to create SslStream using ssl and connection socket - {}", err
);
204 let mut stream
= Box
::pin(stream
);
205 let sender
= sender
.clone();
207 if Arc
::strong_count(&accept_counter
) > MAX_PENDING_ACCEPTS
{
208 eprintln
!("connection rejected - to many open connections");
212 let accept_counter
= accept_counter
.clone();
213 tokio
::spawn(async
move {
214 let accept_future
= tokio
::time
::timeout(
215 Duration
::new(10, 0), stream
.as_mut().accept());
217 let result
= accept_future
.await
;
221 if sender
.send(Ok(stream
)).await
.is_err() && debug
{
222 eprintln
!("detect closed connection channel");
227 eprintln
!("https handshake failed - {}", err
);
232 eprintln
!("https handshake timeout");
237 drop(accept_counter
); // decrease reference count
247 fn start_stat_generator() {
248 let abort_future
= server
::shutdown_future();
249 let future
= Box
::pin(run_stat_generator());
250 let task
= futures
::future
::select(future
, abort_future
);
251 tokio
::spawn(task
.map(|_
| ()));
254 fn start_task_scheduler() {
255 let abort_future
= server
::shutdown_future();
256 let future
= Box
::pin(run_task_scheduler());
257 let task
= futures
::future
::select(future
, abort_future
);
258 tokio
::spawn(task
.map(|_
| ()));
261 use std
::time
::{SystemTime, Instant, Duration, UNIX_EPOCH}
;
263 fn next_minute() -> Result
<Instant
, Error
> {
264 let now
= SystemTime
::now();
265 let epoch_now
= now
.duration_since(UNIX_EPOCH
)?
;
266 let epoch_next
= Duration
::from_secs((epoch_now
.as_secs()/60 + 1)*60);
267 Ok(Instant
::now() + epoch_next
- epoch_now
)
270 async
fn run_task_scheduler() {
272 let mut count
: usize = 0;
277 let delay_target
= match next_minute() { // try to run very minute
280 eprintln
!("task scheduler: compute next minute failed - {}", err
);
281 tokio
::time
::sleep_until(tokio
::time
::Instant
::from_std(Instant
::now() + Duration
::from_secs(60))).await
;
286 if count
> 2 { // wait 1..2 minutes before starting
287 match schedule_tasks().catch_unwind().await
{
289 match panic
.downcast
::<&str>() {
291 eprintln
!("task scheduler panic: {}", msg
);
294 eprintln
!("task scheduler panic - unknown type");
299 eprintln
!("task scheduler failed - {:?}", err
);
305 tokio
::time
::sleep_until(tokio
::time
::Instant
::from_std(delay_target
)).await
;
309 async
fn schedule_tasks() -> Result
<(), Error
> {
311 schedule_datastore_garbage_collection().await
;
312 schedule_datastore_prune().await
;
313 schedule_datastore_sync_jobs().await
;
314 schedule_datastore_verify_jobs().await
;
315 schedule_task_log_rotate().await
;
320 async
fn schedule_datastore_garbage_collection() {
322 use proxmox_backup
::config
::{
329 let config
= match datastore
::config() {
331 eprintln
!("unable to read datastore config - {}", err
);
334 Ok((config
, _digest
)) => config
,
337 for (store
, (_
, store_config
)) in config
.sections
{
338 let datastore
= match DataStore
::lookup_datastore(&store
) {
339 Ok(datastore
) => datastore
,
341 eprintln
!("lookup_datastore failed - {}", err
);
346 let store_config
: DataStoreConfig
= match serde_json
::from_value(store_config
) {
349 eprintln
!("datastore config from_value failed - {}", err
);
354 let event_str
= match store_config
.gc_schedule
{
355 Some(event_str
) => event_str
,
359 let event
= match parse_calendar_event(&event_str
) {
362 eprintln
!("unable to parse schedule '{}' - {}", event_str
, err
);
367 if datastore
.garbage_collection_running() { continue; }
369 let worker_type
= "garbage_collection";
371 let last
= match jobstate
::last_run_time(worker_type
, &store
) {
374 eprintln
!("could not get last run time of {} {}: {}", worker_type
, store
, err
);
379 let next
= match compute_next_event(&event
, last
, false) {
380 Ok(Some(next
)) => next
,
381 Ok(None
) => continue,
383 eprintln
!("compute_next_event for '{}' failed - {}", event_str
, err
);
388 let now
= proxmox
::tools
::time
::epoch_i64();
390 if next
> now { continue; }
392 let job
= match Job
::new(worker_type
, &store
) {
394 Err(_
) => continue, // could not get lock
397 let auth_id
= Authid
::root_auth_id();
399 if let Err(err
) = crate::server
::do_garbage_collection_job(job
, datastore
, auth_id
, Some(event_str
), false) {
400 eprintln
!("unable to start garbage collection job on datastore {} - {}", store
, err
);
405 async
fn schedule_datastore_prune() {
407 use proxmox_backup
::{
417 let config
= match datastore
::config() {
419 eprintln
!("unable to read datastore config - {}", err
);
422 Ok((config
, _digest
)) => config
,
425 for (store
, (_
, store_config
)) in config
.sections
{
427 let store_config
: DataStoreConfig
= match serde_json
::from_value(store_config
) {
430 eprintln
!("datastore '{}' config from_value failed - {}", store
, err
);
435 let event_str
= match store_config
.prune_schedule
{
436 Some(event_str
) => event_str
,
440 let prune_options
= PruneOptions
{
441 keep_last
: store_config
.keep_last
,
442 keep_hourly
: store_config
.keep_hourly
,
443 keep_daily
: store_config
.keep_daily
,
444 keep_weekly
: store_config
.keep_weekly
,
445 keep_monthly
: store_config
.keep_monthly
,
446 keep_yearly
: store_config
.keep_yearly
,
449 if !prune_options
.keeps_something() { // no prune settings - keep all
453 let worker_type
= "prune";
454 if check_schedule(worker_type
, &event_str
, &store
) {
455 let job
= match Job
::new(worker_type
, &store
) {
457 Err(_
) => continue, // could not get lock
460 let auth_id
= Authid
::root_auth_id().clone();
461 if let Err(err
) = do_prune_job(job
, prune_options
, store
.clone(), &auth_id
, Some(event_str
)) {
462 eprintln
!("unable to start datastore prune job {} - {}", &store
, err
);
468 async
fn schedule_datastore_sync_jobs() {
470 use proxmox_backup
::config
::sync
::{
475 let config
= match sync
::config() {
477 eprintln
!("unable to read sync job config - {}", err
);
480 Ok((config
, _digest
)) => config
,
483 for (job_id
, (_
, job_config
)) in config
.sections
{
484 let job_config
: SyncJobConfig
= match serde_json
::from_value(job_config
) {
487 eprintln
!("sync job config from_value failed - {}", err
);
492 let event_str
= match job_config
.schedule
{
493 Some(ref event_str
) => event_str
.clone(),
497 let worker_type
= "syncjob";
498 if check_schedule(worker_type
, &event_str
, &job_id
) {
499 let job
= match Job
::new(worker_type
, &job_id
) {
501 Err(_
) => continue, // could not get lock
504 let auth_id
= Authid
::root_auth_id().clone();
505 if let Err(err
) = do_sync_job(job
, job_config
, &auth_id
, Some(event_str
)) {
506 eprintln
!("unable to start datastore sync job {} - {}", &job_id
, err
);
512 async
fn schedule_datastore_verify_jobs() {
514 use proxmox_backup
::config
::verify
::{
516 VerificationJobConfig
,
519 let config
= match verify
::config() {
521 eprintln
!("unable to read verification job config - {}", err
);
524 Ok((config
, _digest
)) => config
,
526 for (job_id
, (_
, job_config
)) in config
.sections
{
527 let job_config
: VerificationJobConfig
= match serde_json
::from_value(job_config
) {
530 eprintln
!("verification job config from_value failed - {}", err
);
534 let event_str
= match job_config
.schedule
{
535 Some(ref event_str
) => event_str
.clone(),
539 let worker_type
= "verificationjob";
540 let auth_id
= Authid
::root_auth_id().clone();
541 if check_schedule(worker_type
, &event_str
, &job_id
) {
542 let job
= match Job
::new(&worker_type
, &job_id
) {
544 Err(_
) => continue, // could not get lock
546 if let Err(err
) = do_verification_job(job
, job_config
, &auth_id
, Some(event_str
)) {
547 eprintln
!("unable to start datastore verification job {} - {}", &job_id
, err
);
553 async
fn schedule_task_log_rotate() {
555 let worker_type
= "logrotate";
556 let job_id
= "access-log_and_task-archive";
558 // schedule daily at 00:00 like normal logrotate
559 let schedule
= "00:00";
561 if !check_schedule(worker_type
, schedule
, job_id
) {
562 // if we never ran the rotation, schedule instantly
563 match jobstate
::JobState
::load(worker_type
, job_id
) {
564 Ok(state
) => match state
{
565 jobstate
::JobState
::Created { .. }
=> {}
,
572 let mut job
= match Job
::new(worker_type
, job_id
) {
574 Err(_
) => return, // could not get lock
577 if let Err(err
) = WorkerTask
::new_thread(
580 Authid
::root_auth_id().clone(),
583 job
.start(&worker
.upid().to_string())?
;
584 worker
.log("starting task log rotation".to_string());
586 let result
= try_block
!({
587 let max_size
= 512 * 1024 - 1; // an entry has ~ 100b, so > 5000 entries/file
588 let max_files
= 20; // times twenty files gives > 100000 task entries
589 let has_rotated
= rotate_task_log_archive(max_size
, true, Some(max_files
))?
;
591 worker
.log("task log archive was rotated".to_string());
593 worker
.log("task log archive was not rotated".to_string());
596 let max_size
= 32 * 1024 * 1024 - 1;
598 let mut logrotate
= LogRotate
::new(buildcfg
::API_ACCESS_LOG_FN
, true)
599 .ok_or_else(|| format_err
!("could not get API access log file names"))?
;
601 if logrotate
.rotate(max_size
, None
, Some(max_files
))?
{
602 println
!("rotated access log, telling daemons to re-open log file");
603 proxmox_backup
::tools
::runtime
::block_on(command_reopen_logfiles())?
;
604 worker
.log("API access log was rotated".to_string());
606 worker
.log("API access log was not rotated".to_string());
609 let mut logrotate
= LogRotate
::new(buildcfg
::API_AUTH_LOG_FN
, true)
610 .ok_or_else(|| format_err
!("could not get API auth log file names"))?
;
612 if logrotate
.rotate(max_size
, None
, Some(max_files
))?
{
613 worker
.log("API authentication log was rotated".to_string());
615 worker
.log("API authentication log was not rotated".to_string());
621 let status
= worker
.create_state(&result
);
623 if let Err(err
) = job
.finish(status
) {
624 eprintln
!("could not finish job state for {}: {}", worker_type
, err
);
630 eprintln
!("unable to start task log rotation: {}", err
);
635 async
fn command_reopen_logfiles() -> Result
<(), Error
> {
636 // only care about the most recent daemon instance for each, proxy & api, as other older ones
637 // should not respond to new requests anyway, but only finish their current one and then exit.
638 let sock
= server
::our_ctrl_sock();
639 let f1
= server
::send_command(sock
, serde_json
::json
!({
640 "command": "api-access-log-reopen",
643 let pid
= server
::read_pid(buildcfg
::PROXMOX_BACKUP_API_PID_FN
)?
;
644 let sock
= server
::ctrl_sock_from_pid(pid
);
645 let f2
= server
::send_command(sock
, serde_json
::json
!({
646 "command": "api-access-log-reopen",
649 match futures
::join
!(f1
, f2
) {
650 (Err(e1
), Err(e2
)) => Err(format_err
!("reopen commands failed, proxy: {}; api: {}", e1
, e2
)),
651 (Err(e1
), Ok(_
)) => Err(format_err
!("reopen commands failed, proxy: {}", e1
)),
652 (Ok(_
), Err(e2
)) => Err(format_err
!("reopen commands failed, api: {}", e2
)),
657 async
fn run_stat_generator() {
662 let save
= if count
>= 6 { count = 0; true }
else { false }
;
664 let delay_target
= Instant
::now() + Duration
::from_secs(10);
666 generate_host_stats(save
).await
;
668 tokio
::time
::sleep_until(tokio
::time
::Instant
::from_std(delay_target
)).await
;
674 fn rrd_update_gauge(name
: &str, value
: f64, save
: bool
) {
675 use proxmox_backup
::rrd
;
676 if let Err(err
) = rrd
::update_value(name
, value
, rrd
::DST
::Gauge
, save
) {
677 eprintln
!("rrd::update_value '{}' failed - {}", name
, err
);
681 fn rrd_update_derive(name
: &str, value
: f64, save
: bool
) {
682 use proxmox_backup
::rrd
;
683 if let Err(err
) = rrd
::update_value(name
, value
, rrd
::DST
::Derive
, save
) {
684 eprintln
!("rrd::update_value '{}' failed - {}", name
, err
);
688 async
fn generate_host_stats(save
: bool
) {
689 use proxmox
::sys
::linux
::procfs
::{
690 read_meminfo
, read_proc_stat
, read_proc_net_dev
, read_loadavg
};
691 use proxmox_backup
::config
::datastore
;
694 proxmox_backup
::tools
::runtime
::block_in_place(move || {
696 match read_proc_stat() {
698 rrd_update_gauge("host/cpu", stat
.cpu
, save
);
699 rrd_update_gauge("host/iowait", stat
.iowait_percent
, save
);
702 eprintln
!("read_proc_stat failed - {}", err
);
706 match read_meminfo() {
708 rrd_update_gauge("host/memtotal", meminfo
.memtotal
as f64, save
);
709 rrd_update_gauge("host/memused", meminfo
.memused
as f64, save
);
710 rrd_update_gauge("host/swaptotal", meminfo
.swaptotal
as f64, save
);
711 rrd_update_gauge("host/swapused", meminfo
.swapused
as f64, save
);
714 eprintln
!("read_meminfo failed - {}", err
);
718 match read_proc_net_dev() {
720 use proxmox_backup
::config
::network
::is_physical_nic
;
724 if !is_physical_nic(&item
.device
) { continue; }
725 netin
+= item
.receive
;
728 rrd_update_derive("host/netin", netin
as f64, save
);
729 rrd_update_derive("host/netout", netout
as f64, save
);
732 eprintln
!("read_prox_net_dev failed - {}", err
);
736 match read_loadavg() {
738 rrd_update_gauge("host/loadavg", loadavg
.0 as f64, save
);
741 eprintln
!("read_loadavg failed - {}", err
);
745 let disk_manager
= DiskManage
::new();
747 gather_disk_stats(disk_manager
.clone(), Path
::new("/"), "host", save
);
749 match datastore
::config() {
751 let datastore_list
: Vec
<datastore
::DataStoreConfig
> =
752 config
.convert_to_typed_array("datastore").unwrap_or_default();
754 for config
in datastore_list
{
756 let rrd_prefix
= format
!("datastore/{}", config
.name
);
757 let path
= std
::path
::Path
::new(&config
.path
);
758 gather_disk_stats(disk_manager
.clone(), path
, &rrd_prefix
, save
);
762 eprintln
!("read datastore config failed - {}", err
);
769 fn check_schedule(worker_type
: &str, event_str
: &str, id
: &str) -> bool
{
770 let event
= match parse_calendar_event(event_str
) {
773 eprintln
!("unable to parse schedule '{}' - {}", event_str
, err
);
778 let last
= match jobstate
::last_run_time(worker_type
, &id
) {
781 eprintln
!("could not get last run time of {} {}: {}", worker_type
, id
, err
);
786 let next
= match compute_next_event(&event
, last
, false) {
787 Ok(Some(next
)) => next
,
788 Ok(None
) => return false,
790 eprintln
!("compute_next_event for '{}' failed - {}", event_str
, err
);
795 let now
= proxmox
::tools
::time
::epoch_i64();
799 fn gather_disk_stats(disk_manager
: Arc
<DiskManage
>, path
: &Path
, rrd_prefix
: &str, save
: bool
) {
801 match proxmox_backup
::tools
::disks
::disk_usage(path
) {
803 let rrd_key
= format
!("{}/total", rrd_prefix
);
804 rrd_update_gauge(&rrd_key
, status
.total
as f64, save
);
805 let rrd_key
= format
!("{}/used", rrd_prefix
);
806 rrd_update_gauge(&rrd_key
, status
.used
as f64, save
);
809 eprintln
!("read disk_usage on {:?} failed - {}", path
, err
);
813 match disk_manager
.find_mounted_device(path
) {
815 Ok(Some((fs_type
, device
, source
))) => {
816 let mut device_stat
= None
;
817 match fs_type
.as_str() {
819 if let Some(pool
) = source
{
820 match zfs_pool_stats(&pool
) {
821 Ok(stat
) => device_stat
= stat
,
822 Err(err
) => eprintln
!("zfs_pool_stats({:?}) failed - {}", pool
, err
),
827 if let Ok(disk
) = disk_manager
.clone().disk_by_dev_num(device
.into_dev_t()) {
828 match disk
.read_stat() {
829 Ok(stat
) => device_stat
= stat
,
830 Err(err
) => eprintln
!("disk.read_stat {:?} failed - {}", path
, err
),
835 if let Some(stat
) = device_stat
{
836 let rrd_key
= format
!("{}/read_ios", rrd_prefix
);
837 rrd_update_derive(&rrd_key
, stat
.read_ios
as f64, save
);
838 let rrd_key
= format
!("{}/read_bytes", rrd_prefix
);
839 rrd_update_derive(&rrd_key
, (stat
.read_sectors
*512) as f64, save
);
841 let rrd_key
= format
!("{}/write_ios", rrd_prefix
);
842 rrd_update_derive(&rrd_key
, stat
.write_ios
as f64, save
);
843 let rrd_key
= format
!("{}/write_bytes", rrd_prefix
);
844 rrd_update_derive(&rrd_key
, (stat
.write_sectors
*512) as f64, save
);
846 let rrd_key
= format
!("{}/io_ticks", rrd_prefix
);
847 rrd_update_derive(&rrd_key
, (stat
.io_ticks
as f64)/1000.0, save
);
851 eprintln
!("find_mounted_device failed - {}", err
);