LU-13827 utils: ofd_access_batch to print top hot files

[fs/lustre-release.git] / lustre / utils / ofd_access_log_reader.c

diff --git a/lustre/utils/ofd_access_log_reader.c b/lustre/utils/ofd_access_log_reader.c
index 35d4a1c..75d5a59 100644 (file)
--- a/lustre/utils/ofd_access_log_reader.c
+++ b/lustre/utils/ofd_access_log_reader.c
@@ -128,6 +128,7 @@ static unsigned int oal_log_minor_max;
 static struct alr_batch *alr_batch;
 static FILE *alr_batch_file;
 static const char *alr_batch_file_path;
+static int alr_print_fraction = 100;
 
 #define D_ALR_DEV "%s %d"
 #define P_ALR_DEV(ad) \
@@ -498,7 +499,7 @@ static int alr_batch_timer_io(int epoll_fd, struct alr_dev *td, unsigned int mas
 
        DEBUG_U(expire_count);
 
-       rc = alr_batch_print(alr_batch, alr_batch_file);
+       rc = alr_batch_print(alr_batch, alr_batch_file, alr_print_fraction);
        if (rc < 0) {
                ERROR("cannot write to '%s': %s\n",
                        alr_batch_file_path, strerror(errno));
@@ -629,12 +630,13 @@ int main(int argc, char *argv[])
                { .name = "batch-offset", .has_arg = required_argument, .val = 'o', },
                { .name = "debug", .has_arg = optional_argument, .val = 'd', },
                { .name = "help", .has_arg = no_argument, .val = 'h', },
+               { .name = "fraction", .has_arg = required_argument, .val = 'F', },
                { .name = "list", .has_arg = no_argument, .val = 'l', },
                { .name = "trace", .has_arg = optional_argument, .val = 't', },
                { .name = NULL, },
        };
 
-       while ((c = getopt_long(argc, argv, "d::f:hi:lt::", options, NULL)) != -1) {
+       while ((c = getopt_long(argc, argv, "d::f:F:hi:lt::", options, NULL)) != -1) {
                switch (c) {
                case 'f':
                        alr_batch_file_path = optarg;
@@ -669,6 +671,11 @@ int main(int argc, char *argv[])
                case 'h':
                        usage();
                        exit(EXIT_SUCCESS);
+               case 'F':
+                       alr_print_fraction = strtoll(optarg, NULL, 0);
+                       if (alr_print_fraction < 1 || alr_print_fraction > 100)
+                               FATAL("invalid batch offset '%s'\n", optarg);
+                       break;
                case 'l':
                        list_info = 1;
                        break;