The default value (such as 1024) is too small. This set it to
/prco/sys/fs/nr_open. If the file is not available (old kernels or
procfs disabled), this uses the deafult nr_open value (1024 * 1024).
Signed-off-by: FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx>
---
usr/tgtd.c | 36 ++++++++++++++++++++++++++++++++++++
1 files changed, 36 insertions(+), 0 deletions(-)
diff --git a/usr/tgtd.c b/usr/tgtd.c
index 1a3cc02..520e77c 100644
--- a/usr/tgtd.c
+++ b/usr/tgtd.c
@@ -30,6 +30,7 @@
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
+#include <sys/resource.h>
#include <sys/epoll.h>
#include "list.h"
@@ -96,6 +97,37 @@ static int oom_adjust(void)
return 0;
}
+static int nr_file_adjust(void)
+{
+ int ret, fd, max = 1024 * 1024;
+ char path[] = "/proc/sys/fs/nr_open";
+ char buf[64];
+ struct rlimit rlim;
+
+ /* Avoid oom-killer */
+ fd = open(path, O_RDONLY);
+ if (fd < 0) {
+ fprintf(stderr, "can't open %s, %m\n", path);
+ goto set_rlimit;
+ }
+ ret = read(fd, buf, sizeof(buf));
+ if (ret < 0) {
+ fprintf(stderr, "can't read %s, %m\n", path);
+ return errno;
+ }
+ close(fd);
+ max = atoi(buf);
+
+set_rlimit:
+ rlim.rlim_cur = rlim.rlim_max = max;
+
+ ret = setrlimit(RLIMIT_NOFILE, &rlim);
+ if (ret < 0)
+ fprintf(stderr, "can't adjust nr_open %d %m\n", max);
+
+ return 0;
+}
+
int tgt_event_add(int fd, int events, event_handler_t handler, void *data)
{
struct epoll_event ev;
@@ -340,6 +372,10 @@ int main(int argc, char **argv)
if (err)
exit(1);
+ err = nr_file_adjust();
+ if (err)
+ exit(1);
+
err = log_init(program_name, LOG_SPACE_SIZE, is_daemon, is_debug);
if (err)
exit(1);
--
1.5.6.5
--
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