zbd: get max_active_zones limit value from zoned devices

[fio.git] / oslib / linux-blkzoned.c

diff --git a/oslib/linux-blkzoned.c b/oslib/linux-blkzoned.c
index 722e09925b3d22e6b6ec654ea6104c8143c9b9bd..2c3ecf33b4cc31a2e6555bc64afec09d861c37d4 100644 (file)
--- a/oslib/linux-blkzoned.c
+++ b/oslib/linux-blkzoned.c
@@ -186,6 +186,29 @@ int blkzoned_get_max_open_zones(struct thread_data *td, struct fio_file *f,
        return 0;
 }
 
+int blkzoned_get_max_active_zones(struct thread_data *td, struct fio_file *f,
+                                 unsigned int *max_active_zones)
+{
+       char *max_active_str;
+
+       if (f->filetype != FIO_TYPE_BLOCK)
+               return -EIO;
+
+       max_active_str = blkzoned_get_sysfs_attr(f->file_name, "queue/max_active_zones");
+       if (!max_active_str) {
+               *max_active_zones = 0;
+               return 0;
+       }
+
+       dprint(FD_ZBD, "%s: max active zones supported by device: %s\n",
+              f->file_name, max_active_str);
+       *max_active_zones = atoll(max_active_str);
+
+       free(max_active_str);
+
+       return 0;
+}
+
 static uint64_t zone_capacity(struct blk_zone_report *hdr,
                              struct blk_zone *blkz)
 {