land b_hd_remote_acl: support get/set ACL from remote client.

[fs/lustre-release.git] / lustre-iokit / sgpdd-survey / README

diff --git a/lustre-iokit/sgpdd-survey/README b/lustre-iokit/sgpdd-survey/README
index a6bea39..3666baf 100644 (file)
--- a/lustre-iokit/sgpdd-survey/README
+++ b/lustre-iokit/sgpdd-survey/README
@@ -1,3 +1,6 @@
+WARNING: Running sgp_dd will ERASE the contents of the disk devices.
+         This is NOT to be run on any OST where you care about any data
+        or you are not expecting to reformat the filesystem afterward.
 
 Requirements
 ------------
@@ -41,9 +44,9 @@ The summary file and stdout contain lines like...
 
 total_size  8388608K rsz 1024 thr     1 crg   1  180.45 MB/s   1 x  180.50 =  180.50 MB/s
 
-The first number is the bandwidth computed by measuring total data and
-elapsed time.  The other numbers are a check on the bandwidths reported by
-the individual sgp_dd instances.
+The number immediately before the first MB/s is the bandwidth computed by
+measuring total data and elapsed time.  The other numbers are a check on
+the bandwidths reported by the individual sgp_dd instances.
 
 If there are so many threads that sgp_dd is unlikely to be able to allocate
 I/O buffers, "ENOMEM" is printed.