blockdev: make –-getbsz less confusing for end-users

Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=1684078
Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/disk-utils/blockdev.8 b/disk-utils/blockdev.8
index fb0060638204a249dd7a38390b2dd8ca4c66d7d5..5d85c01b791aec97e5a2b6d0873f16254054d792 100644 (file)
--- a/disk-utils/blockdev.8
+++ b/disk-utils/blockdev.8
@@ -44,7 +44,9 @@ Flush buffers.
 .IP "\fB\-\-getalignoff\fP"
 Get alignment offset.
 .IP "\fB\-\-getbsz\fP"
-Print blocksize in bytes.
+Print blocksize in bytes.  This size does not describe device topology.  It's
+size used internally by kernel and it maybe modified (for example) by
+filesystem driver on mount.
 .IP "\fB\-\-getdiscardzeroes\fP"
 Get discard zeroes support status.
 .IP "\fB\-\-getfra\fP"