btrfs-progs: doc: add description of missing and example, of device remove

[platform/upstream/btrfs-progs.git] / cmds-device.c

diff --git a/cmds-device.c b/cmds-device.c
index 3b6b985..f4cdb39 100644 (file)
--- a/cmds-device.c
+++ b/cmds-device.c
@@ -224,9 +224,16 @@ static int _cmd_device_remove(int argc, char **argv,
        return !!ret;
 }
 
+#define COMMON_USAGE_REMOVE_DELETE                                     \
+       "If 'missing' is specified for <device>, the first device that is",     \
+       "described by the filesystem metadata, but not present at the mount",   \
+       "time will be removed. (only in degraded mode)"
+
 static const char * const cmd_device_remove_usage[] = {
        "btrfs device remove <device>|<devid> [<device>|<devid>...] <path>",
        "Remove a device from a filesystem",
+       "",
+       COMMON_USAGE_REMOVE_DELETE,
        NULL
 };
 
@@ -238,6 +245,8 @@ static int cmd_device_remove(int argc, char **argv)
 static const char * const cmd_device_delete_usage[] = {
        "btrfs device delete <device>|<devid> [<device>|<devid>...] <path>",
        "Remove a device from a filesystem (alias of \"btrfs device remove\")",
+       "",
+       COMMON_USAGE_REMOVE_DELETE,
        NULL
 };