LU-11025 dne: introduce new directory hash type: "crush"

[fs/lustre-release.git] / lustre / doc / lfs-migrate.1

diff --git a/lustre/doc/lfs-migrate.1 b/lustre/doc/lfs-migrate.1
index 1f036df..7ae355b 100644 (file)
--- a/lustre/doc/lfs-migrate.1
+++ b/lustre/doc/lfs-migrate.1
@@ -3,7 +3,9 @@
 lfs migrate \- migrate files or directories between MDTs or OSTs.
 .SH SYNOPSIS
 .B lfs migrate
-.RI [ SETSTRIPE_OPTIONS " ... ] <" file "> ..."
+.RI [ SETSTRIPE_OPTIONS " ... ]"
+.RB [ -v ]
+.RI < file "> ..."
 .br
 .B lfs migrate -m \fIstart_mdt_index
 .RB [ -cHv ]
@@ -64,6 +66,9 @@ write operations synchronous.  Using the
 .B --non-direct
 option uses buffered read/write operations, which may improve migration
 speed at the cost of more CPU and memory overhead.
+.TP
+.BR -v , --verbose
+Print each filename as it is migrated.
 .P
 NOTE:
 .B lfs migrate
@@ -94,6 +99,11 @@ Use
 for the new layout.
 .RS 1.2i
 .TP
+.B crush
+CRUSH hash algorithm.  This is a consistent hash
+algorithm, so minimum sub files need to relocate
+during directory restripe.
+.TP
 .B fnv_1a_64
 Fowler-Noll-Vo (FNV-1a) hash algorithm.  This provides
 reasonably uniform, but not cryptographically strong,