Add flush test

[nbd.git] / nbd-tester-client.c

diff --git a/nbd-tester-client.c b/nbd-tester-client.c
index 218b0bd..9f7714e 100644 (file)
--- a/nbd-tester-client.c
+++ b/nbd-tester-client.c
@@ -123,7 +123,7 @@ static inline int write_all(int f, void *buf, size_t len) {
 #define WRITE_ALL_ERRCHK(f, buf, len, whereto, errmsg...) if((write_all(f, buf, len))<=0) { snprintf(errstr, errstr_len, ##errmsg); goto whereto; }
 #define WRITE_ALL_ERR_RT(f, buf, len, whereto, rval, errmsg...) if((write_all(f, buf, len))<=0) { snprintf(errstr, errstr_len, ##errmsg); retval = rval; goto whereto; }
 
-int setup_connection(gchar *hostname, int port, gchar* name, CONNECTION_TYPE ctype) {
+int setup_connection(gchar *hostname, int port, gchar* name, CONNECTION_TYPE ctype, int* serverflags) {
        int sock;
        struct hostent *host;
        struct sockaddr_in addr;
@@ -196,6 +196,8 @@ int setup_connection(gchar *hostname, int port, gchar* name, CONNECTION_TYPE cty
        uint16_t flags;
        READ_ALL_ERRCHK(sock, buf, sizeof(uint16_t), err_open, "Could not read flags: %s", strerror(errno));
        flags = ntohs(flags);
+       *serverflags = flags;
+       g_warning("Server flags are: %08x", flags);
        READ_ALL_ERRCHK(sock, buf, 124, err_open, "Could not read reserved zeroes: %s", strerror(errno));
        goto end;
 err_open:
@@ -267,13 +269,14 @@ int oversize_test(gchar* hostname, int port, char* name, int sock,
        struct nbd_reply rep;
        int request=0;
        int i=0;
+       int serverflags = 0;
        pid_t mypid = getpid();
        char buf[((1024*1024)+sizeof(struct nbd_request)/2)<<1];
        bool got_err;
 
        /* This should work */
        if(!sock_is_open) {
-               if((sock=setup_connection(hostname, port, name, CONNECTION_TYPE_FULL))<0) {
+               if((sock=setup_connection(hostname, port, name, CONNECTION_TYPE_FULL, &serverflags))<0) {
                        g_warning("Could not open socket: %s", errstr);
                        retval=-1;
                        goto err;
@@ -344,21 +347,31 @@ int throughput_test(gchar* hostname, int port, char* name, int sock,
        double speed;
        char speedchar[2] = { '\0', '\0' };
        int retval=0;
+       int serverflags = 0;
        size_t tmp;
        signed int do_write=TRUE;
        pid_t mypid = getpid();
 
+
+       if (!(testflags & TEST_WRITE))
+               testflags &= ~TEST_FLUSH;
+
        memset (writebuf, 'X', sizeof(1024));
        size=0;
        if(!sock_is_open) {
-               if((sock=setup_connection(hostname, port, name, CONNECTION_TYPE_FULL))<0) {
+               if((sock=setup_connection(hostname, port, name, CONNECTION_TYPE_FULL, &serverflags))<0) {
                        g_warning("Could not open socket: %s", errstr);
                        retval=-1;
                        goto err;
                }
        }
+       if ((testflags & TEST_FLUSH) && ((serverflags & (NBD_FLAG_SEND_FLUSH | NBD_FLAG_SEND_FUA))
+                                        != (NBD_FLAG_SEND_FLUSH | NBD_FLAG_SEND_FUA))) {
+               snprintf(errstr, errstr_len, "Server did not supply flush capability flags");
+               retval = -1;
+               goto err_open;
+       }
        req.magic=htonl(NBD_REQUEST_MAGIC);
-       req.type=htonl((testflags & TEST_WRITE)?NBD_CMD_WRITE:NBD_CMD_READ);
        req.len=htonl(1024);
        if(gettimeofday(&start, NULL)<0) {
                retval=-1;
@@ -367,6 +380,11 @@ int throughput_test(gchar* hostname, int port, char* name, int sock,
        }
        for(i=0;i+1024<=size;i+=1024) {
                if(do_write) {
+                       int sendfua = (testflags & TEST_FLUSH) && ((i & 15) == 3);
+                       int sendflush = (testflags & TEST_FLUSH) && ((i & 15) == 11);
+                       req.type=htonl((testflags & TEST_WRITE)?NBD_CMD_WRITE:NBD_CMD_READ);
+                       if (sendfua)
+                               req.type = htonl(NBD_CMD_WRITE | NBD_CMD_FLAG_FUA);
                        memcpy(&(req.handle),&i,sizeof(i));
                        req.from=htonll(i);
                        if (write_all(sock, &req, sizeof(req)) <0) {
@@ -380,6 +398,17 @@ int throughput_test(gchar* hostname, int port, char* name, int sock,
                                }
                        }
                        printf("%d: Requests(+): %d\n", (int)mypid, ++requests);
+                       if (sendflush) {
+                               long long int j = i ^ (1LL<<63);
+                               req.type = htonl(NBD_CMD_FLUSH);
+                               memcpy(&(req.handle),&j,sizeof(j));
+                               req.from=0;
+                               if (write_all(sock, &req, sizeof(req)) <0) {
+                                       retval=-1;
+                                       goto err_open;
+                               }
+                               printf("%d: Requests(+): %d\n", (int)mypid, ++requests);
+                       }
                }
                do {
                        FD_ZERO(&set);