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taosd should not start while other process is running

This commit is contained in:
slguan 2019-08-21 23:57:43 +08:00
parent 60edeb4398
commit 93f3d4462d
1 changed files with 12 additions and 0 deletions
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12
src/system/src/dnodeSystem.c
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@ -83,6 +83,17 @@ void taosCreateTierDirectory() {
mkdir(fileName, 0755);
}
void dnodeCheckDbRunning(const char* dir) {
char filepath[256] = {0};
sprintf(filepath, "%s/.running", dir);
int fd = open(filepath, O_WRONLY | O_CREAT | O_TRUNC, S_IRWXU | S_IRWXG | S_IRWXO);
int ret = flock(fd, LOCK_EX | LOCK_NB);
if (ret != 0) {
dError("failed to lock file:%s ret:%d, database may be running, quit", ret, filepath);
exit(0);
}
}
int dnodeInitSystem() {
char temp[128];
struct stat dirstat;
@ -115,6 +126,7 @@ int dnodeInitSystem() {
sprintf(mgmtDirectory, "%s/mgmt", tsDirectory);
sprintf(tsDirectory, "%s/tsdb", dataDir);
dnodeCheckDbRunning(dataDir);
tsPrintGlobalConfig();
dPrint("Server IP address is:%s", tsInternalIp);