LU-12158 mke2fs: avoid too large stride and stripe_width

[tools/e2fsprogs.git] / misc / mke2fs.c

diff --git a/misc/mke2fs.c b/misc/mke2fs.c
index 864f1ca..f55f8ce 100644 (file)
--- a/misc/mke2fs.c
+++ b/misc/mke2fs.c
@@ -1435,6 +1435,9 @@ struct device_param {
        unsigned int dax:1;             /* supports dax? */
 };
 
+#define        OPTIMIZED_STRIPE_WIDTH  512
+#define        OPTIMIZED_STRIDE        512
+
 #ifdef HAVE_BLKID_PROBE_GET_TOPOLOGY
 /*
  * Sets the geometry of a device (stripe/stride), and returns the
@@ -1465,7 +1468,19 @@ static int get_device_geometry(const char *file,
                goto out;
 
        dev_param->min_io = blkid_topology_get_minimum_io_size(tp);
+       if (dev_param->min_io > OPTIMIZED_STRIDE) {
+               fprintf(stdout,
+                       "detected raid stride %lu too large, use optimum %lu\n",
+                       dev_param->min_io, OPTIMIZED_STRIDE);
+               dev_param->min_io = OPTIMIZED_STRIDE;
+       }
        dev_param->opt_io = blkid_topology_get_optimal_io_size(tp);
+       if (dev_param->opt_io > OPTIMIZED_STRIPE_WIDTH) {
+               fprintf(stdout,
+                       "detected raid stripe width %lu too large, use optimum %lu\n",
+                       dev_param->opt_io, OPTIMIZED_STRIPE_WIDTH);
+               dev_param->opt_io = OPTIMIZED_STRIPE_WIDTH;
+       }
        if ((dev_param->min_io == 0) && (psector_size > blocksize))
                dev_param->min_io = psector_size;
        if ((dev_param->opt_io == 0) && dev_param->min_io > 0)