@@ -8,7 +8,7 @@ include $(TOPDIR)/include/builddefs
LTCOMMAND = xfs_spaceman
HFILES = init.h space.h
CFILES = init.c \
- file.c
+ file.c trim.c
LLDLIBS = $(LIBXCMD)
LTDEPENDENCIES = $(LIBXCMD)
@@ -40,6 +40,7 @@ init_commands(void)
file_init();
help_init();
quit_init();
+ trim_init();
}
static int
@@ -34,3 +34,4 @@ extern int addfile(char *, int , xfs_fsop_geom_t *, int);
extern void file_init(void);
extern void help_init(void);
extern void quit_init(void);
+extern void trim_init(void);
new file mode 100644
@@ -0,0 +1,139 @@
+/*
+ * Copyright (c) 2012 Red Hat, Inc.
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libxfs.h"
+#include <linux/fs.h>
+#include "command.h"
+#include "init.h"
+#include "space.h"
+#include "input.h"
+
+#ifndef FITRIM
+#define FITRIM _IOWR('X', 121, struct fstrim_range) /* Trim */
+
+struct fstrim_range {
+ __u64 start;
+ __u64 len;
+ __u64 minlen;
+};
+#endif
+
+static cmdinfo_t trim_cmd;
+
+/*
+ * Report on trimace usage in xfs filesystem.
+ */
+static int
+trim_f(
+ int argc,
+ char **argv)
+{
+ struct fstrim_range trim = {0};
+ xfs_agnumber_t agno = 0;
+ off64_t offset = 0;
+ ssize_t length = 0;
+ ssize_t minlen = 0;
+ int aflag = 0;
+ int fflag = 0;
+ int ret;
+ int c;
+
+ while ((c = getopt(argc, argv, "a:fm:")) != EOF) {
+ switch (c) {
+ case 'a':
+ if (fflag)
+ return command_usage(&trim_cmd);
+ aflag = 1;
+ agno = atoi(optarg);
+ break;
+ case 'f':
+ if (aflag)
+ return command_usage(&trim_cmd);
+ fflag = 1;
+ break;
+ case 'm':
+ minlen = cvtnum(file->geom.blocksize,
+ file->geom.sectsize, argv[optind]);
+ break;
+ default:
+ return command_usage(&trim_cmd);
+ }
+ }
+
+ if (optind != argc - 2 && !(aflag || fflag))
+ return command_usage(&trim_cmd);
+ if (optind != argc) {
+ offset = cvtnum(file->geom.blocksize, file->geom.sectsize,
+ argv[optind]);
+ length = cvtnum(file->geom.blocksize, file->geom.sectsize,
+ argv[optind + 1]);
+ } else if (agno) {
+ offset = agno * file->geom.agblocks * file->geom.blocksize;
+ length = file->geom.agblocks * file->geom.blocksize;
+ } else {
+ offset = 0;
+ length = file->geom.datablocks * file->geom.blocksize;
+ }
+
+ trim.start = offset;
+ trim.len = length;
+ trim.minlen = minlen;
+
+ ret = ioctl(file->fd, FITRIM, (unsigned long)&trim);
+ if (ret < 0) {
+ fprintf(stderr, "%s: ioctl(FITRIM) [\"%s\"]: "
+ "%s\n", progname, file->name, strerror(errno));
+ exitcode = 1;
+ return 0;
+ }
+ return 0;
+}
+
+static void
+trim_help(void)
+{
+ printf(_(
+"\n"
+"Discard filesystem free space\n"
+"\n"
+"Options: [-m minlen] [-f]|[-a agno]|[offset length]\n"
+"\n"
+" -m minlen -- skip freespace extents smaller than minlen\n"
+" -f -- trim all the freespace in the entire filesystem\n"
+" -a agno -- trim all the freespace in the given AG agno\n"
+" offset length -- trim the freespace in the range {offset, length}\n"
+"\n"));
+
+}
+
+void
+trim_init(void)
+{
+ trim_cmd.name = "trim";
+ trim_cmd.altname = "tr";
+ trim_cmd.cfunc = trim_f;
+ trim_cmd.argmin = 1;
+ trim_cmd.argmax = 4;
+ trim_cmd.args = "[-m minlen] [-f]|[-a agno]|[offset length]\n";
+ trim_cmd.flags = CMD_FLAG_ONESHOT;
+ trim_cmd.oneline = _("Discard filesystem free space");
+ trim_cmd.help = trim_help;
+
+ add_command(&trim_cmd);
+}
+