Both man btrfs-send(8) and usage message don't describe
btrfs-send needs read-only snapshot as its argument.
Signed-off-by: Satoru Takeuchi <takeuchi_sat...@jp.fujitsu.com>
---
Documentation/btrfs-send.asciidoc | 1 +
cmds-send.c | 1 +
2 files changed, 2 insertions(+)
diff --git a/Documentation/btrfs-send.asciidoc
b/Documentation/btrfs-send.asciidoc
index 1dba8a3..e05342f 100644
--- a/Documentation/btrfs-send.asciidoc
+++ b/Documentation/btrfs-send.asciidoc
@@ -12,6 +12,7 @@ SYNOPSIS
DESCRIPTION
-----------
Sends the subvolume(s) specified by <subvol> to stdout.
+<subvol> should be read-only here.
By default, this will send the whole subvolume. To do an incremental
send, use '-p <parent>'.
diff --git a/cmds-send.c b/cmds-send.c
index 478ace1..3e34d75 100644
--- a/cmds-send.c
+++ b/cmds-send.c
@@ -711,6 +711,7 @@ const char * const cmd_send_usage[] = {
"btrfs send [-ve] [-p <parent>] [-c <clone-src>] [-f <outfile>]
<subvol> [<subvol>...]",
"Send the subvolume(s) to stdout.",
"Sends the subvolume(s) specified by <subvol> to stdout.",
+ "<subvol> should be read-only here.",
"By default, this will send the whole subvolume. To do an incremental",
"send, use '-p <parent>'. If you want to allow btrfs to clone from",
"any additional local snapshots, use '-c <clone-src>' (multiple times",
--
2.5.0
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