Hi, when trying out snapshot removal (yeah!) from the for-linus branch I thought that the help message of btrfsctl could be a bit better. Also the manpage of btrfsctl lacks information about it. I attached two micro patches against btrfs-progs-unstable. Cheers - Fuddl
diff --git a/man/btrfsctl.8.in b/man/btrfsctl.8.in index c2d4488..36391dc 100644 --- a/man/btrfsctl.8.in +++ b/man/btrfsctl.8.in @@ -10,6 +10,7 @@ btrfsctl \- control a btrfs filesystem [ \fB \-A\fP\fI device\fP ] [ \fB \-a\fP ] [ \fB \-c\fP ] +[ \fB \-D\fP\fI snapshot-name directory\fP ] .SH DESCRIPTION .B btrfsctl is used to control the filesystem and the files and directories stored. It is the tool to create a new snapshot for the filesystem. @@ -35,6 +36,9 @@ Scans all devices present in the system for btrfs filesystem. .TP \fB\-c\fR Forces a filesystem sync. +.TP +\fB\-D\fR \fIsnapshot-name directory\fR +Deletes a \fIsnapshot\fP in the specified \fIdirectory\fP. .SH AVAILABILITY .B btrfsctl is part of btrfs-progs. Btrfs is currently under heavy development,
diff --git a/btrfsctl.c b/btrfsctl.c
index 66c4e89..e37e2e3 100644
--- a/btrfsctl.c
+++ b/btrfsctl.c
@@ -46,7 +46,7 @@ static inline int ioctl(int fd, int define, void *arg) { return 0; }
static void print_usage(void)
{
printf("usage: btrfsctl [ -d file|dir] [ -s snap_name subvol|tree ]\n");
- printf(" [-r size] [-A device] [-a] [-c] [-D dir .]\n");
+ printf(" [-r size] [-A device] [-a] [-c] [-D snap_name dir]\n");
printf("\t-d filename: defragments one file\n");
printf("\t-d directory: defragments the entire Btree\n");
printf("\t-s snap_name dir: creates a new snapshot of dir\n");
@@ -55,7 +55,7 @@ static void print_usage(void)
printf("\t-A device: scans the device file for a Btrfs filesystem\n");
printf("\t-a: scans all devices for Btrfs filesystems\n");
printf("\t-c: forces a single FS sync\n");
- printf("\t-D: delete snapshot\n");
+ printf("\t-D: snap_name dir: delete named snapshot in directory dir\n");
printf("%s\n", BTRFS_BUILD_VERSION);
exit(1);
}
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