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-rw-r--r--cmds-fi-disk_usage.c428
-rw-r--r--cmds-fi-disk_usage.h3
-rw-r--r--cmds-filesystem.c3
-rw-r--r--utils.c16
-rw-r--r--utils.h5
5 files changed, 455 insertions, 0 deletions
diff --git a/cmds-fi-disk_usage.c b/cmds-fi-disk_usage.c
index 7f441566..25cd4ede 100644
--- a/cmds-fi-disk_usage.c
+++ b/cmds-fi-disk_usage.c
@@ -20,10 +20,12 @@
#include <unistd.h>
#include <sys/ioctl.h>
#include <errno.h>
+#include <stdarg.h>
#include "utils.h"
#include "kerncompat.h"
#include "ctree.h"
+#include "string-table.h"
#include "commands.h"
@@ -44,6 +46,13 @@ struct chunk_info {
u64 num_stripes;
};
+/* to store information about the disks */
+struct disk_info {
+ u64 devid;
+ char path[BTRFS_DEVICE_PATH_NAME_MAX];
+ u64 size;
+};
+
/*
* Pretty print the size
* PAY ATTENTION: it return a statically buffer
@@ -514,3 +523,422 @@ int cmd_filesystem_df(int argc, char **argv)
return 0;
}
+/*
+ * Helper to sort the disk_info structure
+ */
+static int cmp_disk_info(const void *a, const void *b)
+{
+ return strcmp(((struct disk_info *)a)->path,
+ ((struct disk_info *)b)->path);
+}
+
+/*
+ * This function load the disk_info structure and put them in an array
+ */
+static int load_disks_info(int fd,
+ struct disk_info **disks_info_ptr,
+ int *disks_info_count)
+{
+
+ int ret, i, ndevs;
+ struct btrfs_ioctl_fs_info_args fi_args;
+ struct btrfs_ioctl_dev_info_args dev_info;
+ struct disk_info *info;
+
+ *disks_info_count = 0;
+ *disks_info_ptr = 0;
+
+ ret = ioctl(fd, BTRFS_IOC_FS_INFO, &fi_args);
+ if (ret < 0) {
+ fprintf(stderr, "ERROR: cannot get filesystem info\n");
+ return -1;
+ }
+
+ info = malloc(sizeof(struct disk_info) * fi_args.num_devices);
+ if (!info) {
+ fprintf(stderr, "ERROR: not enough memory\n");
+ return -1;
+ }
+
+ for (i = 0, ndevs = 0 ; i <= fi_args.max_id ; i++) {
+
+ BUG_ON(ndevs >= fi_args.num_devices);
+ ret = get_device_info(fd, i, &dev_info);
+
+ if (ret == -ENODEV)
+ continue;
+ if (ret) {
+ fprintf(stderr,
+ "ERROR: cannot get info about device devid=%d\n",
+ i);
+ free(info);
+ return -1;
+ }
+
+ info[ndevs].devid = dev_info.devid;
+ strcpy(info[ndevs].path, (char *)dev_info.path);
+ info[ndevs].size = get_partition_size((char *)dev_info.path);
+ ++ndevs;
+ }
+
+ BUG_ON(ndevs != fi_args.num_devices);
+ qsort(info, fi_args.num_devices,
+ sizeof(struct disk_info), cmp_disk_info);
+
+ *disks_info_count = fi_args.num_devices;
+ *disks_info_ptr = info;
+
+ return 0;
+
+}
+
+/*
+ * This function computes the size of a chunk in a disk
+ */
+static u64 calc_chunk_size(struct chunk_info *ci)
+{
+ if (ci->type & BTRFS_BLOCK_GROUP_RAID0)
+ return ci->size / ci->num_stripes;
+ else if (ci->type & BTRFS_BLOCK_GROUP_RAID1)
+ return ci->size ;
+ else if (ci->type & BTRFS_BLOCK_GROUP_DUP)
+ return ci->size ;
+ else if (ci->type & BTRFS_BLOCK_GROUP_RAID5)
+ return ci->size / (ci->num_stripes -1);
+ else if (ci->type & BTRFS_BLOCK_GROUP_RAID6)
+ return ci->size / (ci->num_stripes -2);
+ else if (ci->type & BTRFS_BLOCK_GROUP_RAID10)
+ return ci->size / ci->num_stripes;
+ return ci->size;
+}
+
+/*
+ * This function print the results of the command btrfs fi disk-usage
+ * in tabular format
+ */
+static void _cmd_filesystem_disk_usage_tabular(int mode,
+ struct btrfs_ioctl_space_args *sargs,
+ struct chunk_info *chunks_info_ptr,
+ int chunks_info_count,
+ struct disk_info *disks_info_ptr,
+ int disks_info_count)
+{
+ int i;
+ u64 total_unused = 0;
+ struct string_table *matrix = 0;
+ int ncols, nrows;
+
+ ncols = sargs->total_spaces + 2;
+ nrows = 2 + 1 + disks_info_count + 1 + 2;
+
+ matrix = table_create(ncols, nrows);
+ if (!matrix) {
+ fprintf(stderr, "ERROR: not enough memory\n");
+ return;
+ }
+
+ /* header */
+ for (i = 0; i < sargs->total_spaces; i++) {
+ const char *description;
+
+ u64 flags = sargs->spaces[i].flags;
+ description = btrfs_group_type_str(flags);
+
+ table_printf(matrix, 1+i, 0, "<%s", description);
+ }
+
+ for (i = 0; i < sargs->total_spaces; i++) {
+ const char *r_mode;
+
+ u64 flags = sargs->spaces[i].flags;
+ r_mode = btrfs_group_profile_str(flags);
+
+ table_printf(matrix, 1+i, 1, "<%s", r_mode);
+ }
+
+ table_printf(matrix, 1+sargs->total_spaces, 1, "<Unallocated");
+
+ /* body */
+ for (i = 0 ; i < disks_info_count ; i++) {
+ int k, col;
+ char *p;
+
+ u64 total_allocated = 0, unused;
+
+ p = strrchr(disks_info_ptr[i].path, '/');
+ if (!p)
+ p = disks_info_ptr[i].path;
+ else
+ p++;
+
+ table_printf(matrix, 0, i+3, "<%s",
+ disks_info_ptr[i].path);
+
+ for (col = 1, k = 0 ; k < sargs->total_spaces ; k++) {
+ u64 flags = sargs->spaces[k].flags;
+ u64 devid = disks_info_ptr[i].devid;
+ int j;
+ u64 size = 0;
+
+ for (j = 0 ; j < chunks_info_count ; j++) {
+ if (chunks_info_ptr[j].type != flags )
+ continue;
+ if (chunks_info_ptr[j].devid != devid)
+ continue;
+
+ size += calc_chunk_size(chunks_info_ptr+j);
+ }
+
+ if (size)
+ table_printf(matrix, col, i+3,
+ ">%s", df_pretty_sizes(size, mode));
+ else
+ table_printf(matrix, col, i+3, ">-");
+
+ total_allocated += size;
+ col++;
+ }
+
+ unused = get_partition_size(disks_info_ptr[i].path) -
+ total_allocated;
+
+ table_printf(matrix, sargs->total_spaces + 1, i + 3,
+ ">%s", df_pretty_sizes(unused, mode));
+ total_unused += unused;
+
+ }
+
+ for (i = 0; i <= sargs->total_spaces; i++)
+ table_printf(matrix, i + 1, disks_info_count + 3, "=");
+
+
+ /* footer */
+ table_printf(matrix, 0, disks_info_count + 4, "<Total");
+ for (i = 0; i < sargs->total_spaces; i++)
+ table_printf(matrix, 1 + i, disks_info_count + 4,
+ ">%s",
+ df_pretty_sizes(sargs->spaces[i].total_bytes, mode));
+
+ table_printf(matrix, sargs->total_spaces+1, disks_info_count+4,
+ ">%s", df_pretty_sizes(total_unused, mode));
+
+ table_printf(matrix, 0, disks_info_count+5, "<Used");
+ for (i = 0; i < sargs->total_spaces; i++)
+ table_printf(matrix, 1+i, disks_info_count+5, ">%s",
+ df_pretty_sizes(sargs->spaces[i].used_bytes, mode));
+
+
+ table_dump(matrix);
+ table_free(matrix);
+
+}
+
+/*
+ * This function prints the unused space per every disk
+ */
+static void print_unused(struct chunk_info *info_ptr,
+ int info_count,
+ struct disk_info *disks_info_ptr,
+ int disks_info_count,
+ int mode)
+{
+ int i;
+ for (i = 0 ; i < disks_info_count ; i++) {
+
+ int j;
+ u64 total = 0;
+
+ for (j = 0 ; j < info_count ; j++)
+ if (info_ptr[j].devid == disks_info_ptr[i].devid)
+ total += calc_chunk_size(info_ptr+j);
+
+ printf(" %s\t%10s\n",
+ disks_info_ptr[i].path,
+ df_pretty_sizes(disks_info_ptr[i].size - total, mode));
+
+ }
+
+}
+
+/*
+ * This function prints the allocated chunk per every disk
+ */
+static void print_chunk_disks(u64 chunk_type,
+ struct chunk_info *chunks_info_ptr,
+ int chunks_info_count,
+ struct disk_info *disks_info_ptr,
+ int disks_info_count,
+ int mode)
+{
+ int i;
+
+ for (i = 0 ; i < disks_info_count ; i++) {
+
+ int j;
+ u64 total = 0;
+
+ for (j = 0 ; j < chunks_info_count ; j++) {
+
+ if (chunks_info_ptr[j].type != chunk_type)
+ continue;
+ if (chunks_info_ptr[j].devid != disks_info_ptr[i].devid)
+ continue;
+
+ total += calc_chunk_size(&(chunks_info_ptr[j]));
+ //total += chunks_info_ptr[j].size;
+ }
+
+ if (total > 0)
+ printf(" %s\t%10s\n",
+ disks_info_ptr[i].path,
+ df_pretty_sizes(total, mode));
+ }
+}
+
+/*
+ * This function print the results of the command btrfs fi disk-usage
+ * in linear format
+ */
+static void _cmd_filesystem_disk_usage_linear(int mode,
+ struct btrfs_ioctl_space_args *sargs,
+ struct chunk_info *info_ptr,
+ int info_count,
+ struct disk_info *disks_info_ptr,
+ int disks_info_count)
+{
+ int i;
+
+ for (i = 0; i < sargs->total_spaces; i++) {
+ const char *description;
+ const char *r_mode;
+
+ u64 flags = sargs->spaces[i].flags;
+ description = btrfs_group_type_str(flags);
+ r_mode = btrfs_group_profile_str(flags);
+
+ printf("%s,%s: Size:%s, ",
+ description,
+ r_mode,
+ df_pretty_sizes(sargs->spaces[i].total_bytes ,
+ mode));
+ printf("Used:%s\n",
+ df_pretty_sizes(sargs->spaces[i].used_bytes,
+ mode));
+ print_chunk_disks(flags, info_ptr, info_count,
+ disks_info_ptr, disks_info_count,
+ mode);
+ printf("\n");
+
+ }
+
+ printf("Unallocated:\n");
+ print_unused(info_ptr, info_count,
+ disks_info_ptr, disks_info_count,
+ mode);
+
+
+
+}
+
+static int _cmd_filesystem_disk_usage(int fd, char *path, int mode, int tabular)
+{
+ struct btrfs_ioctl_space_args *sargs = 0;
+ int info_count = 0;
+ struct chunk_info *info_ptr = 0;
+ struct disk_info *disks_info_ptr = 0;
+ int disks_info_count = 0;
+ int ret = 0;
+
+ if (load_chunk_info(fd, &info_ptr, &info_count) ||
+ load_disks_info(fd, &disks_info_ptr, &disks_info_count)) {
+ ret = -1;
+ goto exit;
+ }
+
+ if ((sargs = load_space_info(fd, path)) == NULL) {
+ ret = -1;
+ goto exit;
+ }
+
+ if (tabular)
+ _cmd_filesystem_disk_usage_tabular(mode, sargs,
+ info_ptr, info_count,
+ disks_info_ptr, disks_info_count);
+ else
+ _cmd_filesystem_disk_usage_linear(mode, sargs,
+ info_ptr, info_count,
+ disks_info_ptr, disks_info_count);
+
+exit:
+
+ if (sargs)
+ free(sargs);
+ if (disks_info_ptr)
+ free(disks_info_ptr);
+ if (info_ptr)
+ free(info_ptr);
+
+ return ret;
+}
+
+const char * const cmd_filesystem_disk_usage_usage[] = {
+ "btrfs filesystem disk-usage [-b][-t] <path> [<path>..]",
+ "Show in which disk the chunks are allocated.",
+ "",
+ "-b\tSet byte as unit",
+ "-t\tShow data in tabular format",
+ NULL
+};
+
+int cmd_filesystem_disk_usage(int argc, char **argv)
+{
+
+ int flags = DF_HUMAN_UNIT;
+ int i, more_than_one = 0;
+ int tabular = 0;
+
+ optind = 1;
+ while (1) {
+ char c = getopt(argc, argv, "bt");
+ if (c < 0)
+ break;
+ switch (c) {
+ case 'b':
+ flags &= ~DF_HUMAN_UNIT;
+ break;
+ case 't':
+ tabular = 1;
+ break;
+ default:
+ usage(cmd_filesystem_disk_usage_usage);
+ }
+ }
+
+ if (check_argc_min(argc - optind, 1)) {
+ usage(cmd_filesystem_disk_usage_usage);
+ return 21;
+ }
+
+ for (i = optind; i < argc ; i++) {
+ int r, fd;
+ DIR *dirstream = NULL;
+ if (more_than_one)
+ printf("\n");
+
+ fd = open_file_or_dir(argv[i], &dirstream);
+ if (fd < 0) {
+ fprintf(stderr, "ERROR: can't access to '%s'\n",
+ argv[1]);
+ return 12;
+ }
+ r = _cmd_filesystem_disk_usage(fd, argv[i], flags, tabular);
+ close_file_or_dir(fd, dirstream);
+
+ if (r)
+ return r;
+ more_than_one = 1;
+
+ }
+
+ return 0;
+}
diff --git a/cmds-fi-disk_usage.h b/cmds-fi-disk_usage.h
index 9f68bb34..c7459b15 100644
--- a/cmds-fi-disk_usage.h
+++ b/cmds-fi-disk_usage.h
@@ -22,4 +22,7 @@
extern const char * const cmd_filesystem_df_usage[];
int cmd_filesystem_df(int argc, char **argv);
+extern const char * const cmd_filesystem_disk_usage_usage[];
+int cmd_filesystem_disk_usage(int argc, char **argv);
+
#endif
diff --git a/cmds-filesystem.c b/cmds-filesystem.c
index b39424bf..3f349ed6 100644
--- a/cmds-filesystem.c
+++ b/cmds-filesystem.c
@@ -1298,6 +1298,9 @@ const struct cmd_group filesystem_cmd_group = {
{ "balance", cmd_balance, NULL, &balance_cmd_group, 1 },
{ "resize", cmd_resize, cmd_resize_usage, NULL, 0 },
{ "label", cmd_label, cmd_label_usage, NULL, 0 },
+ { "disk-usage", cmd_filesystem_disk_usage,
+ cmd_filesystem_disk_usage_usage, NULL, 0 },
+
NULL_CMD_STRUCT
}
};
diff --git a/utils.c b/utils.c
index 7f822a91..1fb23776 100644
--- a/utils.c
+++ b/utils.c
@@ -2505,3 +2505,19 @@ u64 disk_size(char *path)
else
return sfs.f_bsize * sfs.f_blocks;
}
+
+u64 get_partition_size(char *dev)
+{
+ u64 result;
+ int fd = open(dev, O_RDONLY);
+
+ if (fd < 0)
+ return 0;
+ if (ioctl(fd, BLKGETSIZE64, &result) < 0) {
+ close(fd);
+ return 0;
+ }
+ close(fd);
+
+ return result;
+}
diff --git a/utils.h b/utils.h
index 9364f2a8..8950fca3 100644
--- a/utils.h
+++ b/utils.h
@@ -135,6 +135,11 @@ int get_device_info(int fd, u64 devid,
struct btrfs_ioctl_dev_info_args *di_args);
int test_uuid_unique(char *fs_uuid);
u64 disk_size(char *path);
+int get_device_info(int fd, u64 devid,
+ struct btrfs_ioctl_dev_info_args *di_args);
+u64 get_partition_size(char *dev);
+const char* group_type_str(u64 flags);
+const char* group_profile_str(u64 flags);
int test_minimum_size(const char *file, u32 leafsize);
int test_issubvolname(const char *name);