Add bcachefs fs usage

1 files changed, 107 insertions, 25 deletions

diff --git a/cmd_fs.c b/cmd_fs.c
index a332db3d..65ee539e 100644
--- a/cmd_fs.c
+++ b/cmd_fs.c
@@ -1,43 +1,125 @@
 
-#include "cmds.h"
+#include <stdio.h>
+#include <sys/ioctl.h>
 
-struct bcache_fs {
-	/* options... */
+#include <uuid/uuid.h>
 
-	u64		capacity;
+#include "libbcachefs/bcachefs_ioctl.h"
+#include "libbcachefs/opts.h"
 
-	/* XXX: dirty != used, it doesn't count metadata */
-	u64		bytes_dirty;
-};
+#include "cmds.h"
 
-#if 0
-static struct bcache_fs fill_fs(struct bcache_handle fs)
+static inline int printf_pad(unsigned pad, const char * fmt, ...)
 {
-	return (struct bcache_fs) {
-	};
+       va_list args;
+       int ret;
+
+       va_start(args, fmt);
+       ret = vprintf(fmt, args);
+       va_end(args);
+
+       while (ret++ < pad)
+	       putchar(' ');
+
+       return ret;
 }
-#endif
 
-int cmd_fs_show(int argc, char *argv[])
+static void print_fs_usage(const char *path, enum units units)
 {
-	if (argc != 2)
-		die("Please supply a filesystem");
+	unsigned i, j, nr_devices = 4;
+	struct bcache_handle fs = bcache_fs_open(path);
+	struct bch_ioctl_usage *u = NULL;
+	char uuid[40];
 
-#if 0
-	struct bcache_handle fs = bcache_fs_open(argv[1]);
-#endif
+	while (1) {
+		u = xrealloc(u, sizeof(*u) + sizeof(u->devs[0]) * nr_devices);
+		u->nr_devices = nr_devices;
 
-	return 0;
+		if (!ioctl(fs.ioctl_fd, BCH_IOCTL_USAGE, u))
+			break;
+		if (errno != ENOSPC)
+			die("BCH_IOCTL_USAGE error: %m");
+		nr_devices *= 2;
+	}
+
+	uuid_unparse(fs.uuid.b, uuid);
+	printf("Filesystem %s:\n", uuid);
+
+	printf("%-20s%12s\n", "Size:", pr_units(u->fs.capacity, units));
+	printf("%-20s%12s\n", "Used:", pr_units(u->fs.used, units));
+
+	printf("%-20s%12s%12s%12s%12s\n",
+	       "By replicas:", "1x", "2x", "3x", "4x");
+
+	for (j = BCH_DATA_BTREE; j < BCH_DATA_NR; j++) {
+		printf_pad(20, "  %s:", bch2_data_types[j]);
+
+		for (i = 0; i < BCH_REPLICAS_MAX; i++)
+			printf("%12s", pr_units(u->fs.sectors[j][i], units));
+		printf("\n");
+	}
+
+	printf_pad(20, "  %s:", "reserved");
+	for (i = 0; i < BCH_REPLICAS_MAX; i++)
+		printf("%12s", pr_units(u->fs.persistent_reserved[i], units));
+	printf("\n");
+
+	printf("%-20s%12s\n", "  online reserved:", pr_units(u->fs.online_reserved, units));
+
+	for (i = 0; i < u->nr_devices; i++) {
+		struct bch_ioctl_dev_usage *d = u->devs + i;
+		char *name = NULL;
+
+		if (!d->alive)
+			continue;
+
+		printf("\n");
+		printf_pad(20, "Device %u usage:", i);
+		name = !d->dev ? strdup("(offline)")
+			: dev_to_path(d->dev)
+			?: strdup("(device not found)");
+
+		printf("%24s%12s\n", name, bch2_dev_state[d->state]);
+		free(name);
+
+		printf("%-20s%12s%12s%12s\n",
+		       "", "data", "buckets", "fragmented");
+
+		for (j = BCH_DATA_SB; j < BCH_DATA_NR; j++) {
+			u64 frag = max((s64) d->buckets[j] * d->bucket_size -
+				       (s64) d->sectors[j], 0LL);
+
+			printf_pad(20, "  %s:", bch2_data_types[j]);
+			printf("%12s%12llu%12s\n",
+			       pr_units(d->sectors[j], units),
+			       d->buckets[j],
+			       pr_units(frag, units));
+		}
+	}
+
+	free(u);
+	bcache_fs_close(fs);
 }
 
-int cmd_fs_set(int argc, char *argv[])
+int cmd_fs_usage(int argc, char *argv[])
 {
-	if (argc != 2)
-		die("Please supply a filesystem");
+	enum units units = BYTES;
+	unsigned i;
+	int opt;
+
+	while ((opt = getopt(argc, argv, "h")) != -1)
+		switch (opt) {
+		case 'h':
+			units = HUMAN_READABLE;
+			break;
+		}
 
-#if 0
-	struct bcache_handle fs = bcache_fs_open(argv[1]);
-#endif
+	if (argc - optind < 1) {
+		print_fs_usage(".", units);
+	} else {
+		for (i = optind; i < argc; i++)
+			print_fs_usage(argv[i], units);
+	}
 
 	return 0;
 }