* (C) Copyright 2012 Commissariat a l'energie atomique et aux energies
* alternatives
*
+ * Copyright (c) 2013, 2014, Intel Corporation.
*/
/* HSM copytool program for POSIX filesystem-based HSM's.
*
#include <stdlib.h>
#include <dirent.h>
#include <errno.h>
+#include <getopt.h>
#include <time.h>
#include <utime.h>
#include <sys/time.h>
#define ONE_MB 0x100000
+#ifndef NSEC_PER_SEC
+# define NSEC_PER_SEC 1000000000UL
+#endif
+
/* copytool uses a 32b bitmask field to register with kuc
* archive num = 0 => all
* archive num from 1 to 32
return rc;
}
-static void bandwidth_ctl_delay(int wsize)
-{
- static unsigned long long tot_bytes;
- static time_t start_time;
- static time_t last_time;
- time_t now = time(0);
- double tot_time;
- double excess;
- unsigned int sleep_time;
-
- if (now > last_time + 5) {
- tot_bytes = 0;
- start_time = last_time = now;
- }
-
- tot_bytes += wsize;
- tot_time = now - start_time;
- if (tot_time < 1)
- tot_time = 1;
-
- excess = tot_bytes - tot_time * opt.o_bandwidth;
- sleep_time = excess * 1000000 / opt.o_bandwidth;
- if ((now - start_time) % 10 == 1)
- CT_TRACE("bandwith control: excess=%E sleep for %dus", excess,
- sleep_time);
-
- if (excess > 0)
- usleep(sleep_time);
-
- last_time = now;
-}
-
static int ct_copy_data(struct hsm_copyaction_private *hcp, const char *src,
const char *dst, int src_fd, int dst_fd,
const struct hsm_action_item *hai, long hal_flags)
char *buf = NULL;
__u64 write_total = 0;
__u64 length;
- double start_time = ct_now();
- time_t last_print_time = time(NULL);
+ time_t last_report_time;
int rc = 0;
+ double start_ct_now = ct_now();
+ /* Bandwidth Control */
+ time_t start_time;
+ time_t now;
+ time_t last_bw_print;
if (fstat(src_fd, &src_st) < 0) {
rc = -errno;
return rc;
}
+ if (hai->hai_extent.offset > (__u64)src_st.st_size) {
+ rc = -EINVAL;
+ CT_ERROR(rc, "Trying to start reading past end ("LPU64" > "
+ "%jd) of '%s' source file", hai->hai_extent.offset,
+ (intmax_t)src_st.st_size, src);
+ return rc;
+ }
+
if (fstat(dst_fd, &dst_st) < 0) {
rc = -errno;
CT_ERROR(rc, "cannot stat '%s'", dst);
return rc;
}
- rc = lseek(src_fd, hai->hai_extent.offset, SEEK_SET);
- if (rc < 0) {
- rc = -errno;
- CT_ERROR(rc,
- "cannot seek for read to "LPU64" (len %jd) in '%s'",
- hai->hai_extent.offset, (intmax_t)src_st.st_size, src);
- return rc;
- }
-
/* Don't read beyond a given extent */
- length = min(hai->hai_extent.length, src_st.st_size);
+ length = min(hai->hai_extent.length,
+ src_st.st_size - hai->hai_extent.offset);
+
+ start_time = last_bw_print = last_report_time = time(NULL);
he.offset = offset;
he.length = 0;
write_total += wsize;
offset += wsize;
- if (opt.o_bandwidth != 0)
- /* sleep if needed, to honor bandwidth limits */
- bandwidth_ctl_delay(wsize);
+ now = time(NULL);
+ /* sleep if needed, to honor bandwidth limits */
+ if (opt.o_bandwidth != 0) {
+ unsigned long long write_theory;
+
+ write_theory = (now - start_time) * opt.o_bandwidth;
+
+ if (write_theory < write_total) {
+ unsigned long long excess;
+ struct timespec delay;
+
+ excess = write_total - write_theory;
+
+ delay.tv_sec = excess / opt.o_bandwidth;
+ delay.tv_nsec = (excess % opt.o_bandwidth) *
+ NSEC_PER_SEC / opt.o_bandwidth;
+
+ if (now >= last_bw_print + opt.o_report_int) {
+ CT_TRACE("bandwith control: %lluB/s "
+ "excess=%llu sleep for "
+ "%lld.%09lds",
+ opt.o_bandwidth, excess,
+ (long long)delay.tv_sec,
+ delay.tv_nsec);
+ last_bw_print = now;
+ }
+
+ do {
+ rc = nanosleep(&delay, &delay);
+ } while (rc < 0 && errno == EINTR);
+ if (rc < 0) {
+ CT_ERROR(errno, "delay for bandwidth "
+ "control failed to sleep: "
+ "residual=%lld.%09lds",
+ (long long)delay.tv_sec,
+ delay.tv_nsec);
+ rc = 0;
+ }
+ }
+ }
- if (time(0) >= last_print_time + opt.o_report_int) {
- last_print_time = time(0);
+ now = time(NULL);
+ if (now >= last_report_time + opt.o_report_int) {
+ last_report_time = now;
CT_TRACE("%%"LPU64" ", 100 * write_total / length);
he.length = write_total;
rc = llapi_hsm_action_progress(hcp, &he, length, 0);
free(buf);
CT_TRACE("copied "LPU64" bytes in %f seconds",
- length, ct_now() - start_time);
+ length, ct_now() - start_ct_now);
return rc;
}
* does successfully unmount and the mount is actually gone, but the
* mtab entry remains. So this just makes mtab happier. */
llapi_hsm_copytool_unregister(&ctdata);
+
+ /* Also remove fifo upon signal as during normal/error exit */
+ if (opt.o_event_fifo != NULL)
+ llapi_hsm_unregister_event_fifo(opt.o_event_fifo);
_exit(1);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff