X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=blktrace.c;h=297a8a947af254200aed536788b095811a0d34ac;hp=f22ab1b9f2bfb96ffe057884091c534c6848a12b;hb=1c964ce59ba23b1ab515a8f0b6506329c1c3d3e1;hpb=ff58fcede39d16a2c642897cbe5a7f28b2da1950

diff --git a/blktrace.c b/blktrace.c
index f22ab1b9..297a8a94 100644
--- a/blktrace.c
+++ b/blktrace.c
@@ -97,7 +97,8 @@ int is_blktrace(const char *filename)
 	return 0;
 }
 
-static int lookup_device(char *path, unsigned int maj, unsigned int min)
+static int lookup_device(struct thread_data *td, char *path, unsigned int maj,
+			 unsigned int min)
 {
 	struct dirent *dir;
 	struct stat st;
@@ -121,7 +122,7 @@ static int lookup_device(char *path, unsigned int maj, unsigned int min)
 		}
 
 		if (S_ISDIR(st.st_mode)) {
-			found = lookup_device(full_path, maj, min);
+			found = lookup_device(td, full_path, maj, min);
 			if (found) {
 				strcpy(path, full_path);
 				break;
@@ -131,6 +132,20 @@ static int lookup_device(char *path, unsigned int maj, unsigned int min)
 		if (!S_ISBLK(st.st_mode))
 			continue;
 
+		/*
+		 * If replay_redirect is set then always return this device
+		 * upon lookup which overrides the device lookup based on
+		 * major minor in the actual blktrace
+		 */
+		if (td->o.replay_redirect) {
+			dprint(FD_BLKTRACE, "device lookup: %d/%d\n overridden"
+					" with: %s", maj, min,
+					td->o.replay_redirect);
+			strcpy(path, td->o.replay_redirect);
+			found = 1;
+			break;
+		}
+
 		if (maj == major(st.st_rdev) && min == minor(st.st_rdev)) {
 			dprint(FD_BLKTRACE, "device lookup: %d/%d\n", maj, min);
 			strcpy(path, full_path);
@@ -153,6 +168,7 @@ static void trace_add_open_event(struct thread_data *td, int fileno)
 	struct io_piece *ipo;
 
 	ipo = calloc(1, sizeof(*ipo));
+	init_ipo(ipo);
 
 	ipo->ddir = DDIR_INVAL;
 	ipo->fileno = fileno;
@@ -183,7 +199,7 @@ static void trace_add_file(struct thread_data *td, __u32 device)
 			return;
 
 	strcpy(dev, "/dev");
-	if (lookup_device(dev, maj, min)) {
+	if (lookup_device(td, dev, maj, min)) {
 		int fileno;
 
 		dprint(FD_BLKTRACE, "add devices %s\n", dev);
@@ -200,8 +216,8 @@ static void store_ipo(struct thread_data *td, unsigned long long offset,
 {
 	struct io_piece *ipo = malloc(sizeof(*ipo));
 
-	memset(ipo, 0, sizeof(*ipo));
-	INIT_FLIST_HEAD(&ipo->list);
+	init_ipo(ipo);
+
 	/*
 	 * the 512 is wrong here, it should be the hardware sector size...
 	 */
@@ -241,6 +257,7 @@ static void handle_trace_discard(struct thread_data *td, struct blk_io_trace *t,
 {
 	struct io_piece *ipo = malloc(sizeof(*ipo));
 
+	init_ipo(ipo);
 	trace_add_file(td, t->device);
 
 	ios[DDIR_WRITE]++;