mirror of
https://github.com/kdave/btrfs-progs
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btrfs-progs: Add command btrfs filesystem disk-usage
Signed-off-by: Goffredo Baroncelli <kreijack@inwind.it> Signed-off-by: David Sterba <dsterba@suse.cz>
This commit is contained in:
Goffredo Baroncelli
David Sterba
parent
cbda6f2527
commit
9002666a2b
@ -20,10 +20,12 @@
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <errno.h>
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#include <stdarg.h>
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#include "utils.h"
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#include "kerncompat.h"
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#include "ctree.h"
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#include "string-table.h"
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#include "commands.h"
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@ -44,6 +46,13 @@ struct chunk_info {
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u64 num_stripes;
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};
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/* to store information about the disks */
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struct disk_info {
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u64 devid;
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char path[BTRFS_DEVICE_PATH_NAME_MAX];
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u64 size;
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};
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/*
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* Pretty print the size
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* PAY ATTENTION: it return a statically buffer
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@ -514,3 +523,422 @@ int cmd_filesystem_df(int argc, char **argv)
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return 0;
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}
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/*
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* Helper to sort the disk_info structure
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*/
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static int cmp_disk_info(const void *a, const void *b)
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{
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return strcmp(((struct disk_info *)a)->path,
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((struct disk_info *)b)->path);
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}
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/*
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* This function load the disk_info structure and put them in an array
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*/
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static int load_disks_info(int fd,
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struct disk_info **disks_info_ptr,
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int *disks_info_count)
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{
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int ret, i, ndevs;
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struct btrfs_ioctl_fs_info_args fi_args;
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struct btrfs_ioctl_dev_info_args dev_info;
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struct disk_info *info;
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*disks_info_count = 0;
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*disks_info_ptr = 0;
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ret = ioctl(fd, BTRFS_IOC_FS_INFO, &fi_args);
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if (ret < 0) {
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fprintf(stderr, "ERROR: cannot get filesystem info\n");
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return -1;
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}
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info = malloc(sizeof(struct disk_info) * fi_args.num_devices);
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if (!info) {
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fprintf(stderr, "ERROR: not enough memory\n");
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return -1;
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}
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for (i = 0, ndevs = 0 ; i <= fi_args.max_id ; i++) {
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BUG_ON(ndevs >= fi_args.num_devices);
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ret = get_device_info(fd, i, &dev_info);
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if (ret == -ENODEV)
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continue;
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if (ret) {
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fprintf(stderr,
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"ERROR: cannot get info about device devid=%d\n",
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i);
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free(info);
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return -1;
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}
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info[ndevs].devid = dev_info.devid;
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strcpy(info[ndevs].path, (char *)dev_info.path);
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info[ndevs].size = get_partition_size((char *)dev_info.path);
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++ndevs;
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}
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BUG_ON(ndevs != fi_args.num_devices);
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qsort(info, fi_args.num_devices,
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sizeof(struct disk_info), cmp_disk_info);
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*disks_info_count = fi_args.num_devices;
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*disks_info_ptr = info;
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return 0;
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}
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/*
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* This function computes the size of a chunk in a disk
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*/
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static u64 calc_chunk_size(struct chunk_info *ci)
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{
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if (ci->type & BTRFS_BLOCK_GROUP_RAID0)
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return ci->size / ci->num_stripes;
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else if (ci->type & BTRFS_BLOCK_GROUP_RAID1)
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return ci->size ;
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else if (ci->type & BTRFS_BLOCK_GROUP_DUP)
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return ci->size ;
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else if (ci->type & BTRFS_BLOCK_GROUP_RAID5)
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return ci->size / (ci->num_stripes -1);
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else if (ci->type & BTRFS_BLOCK_GROUP_RAID6)
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return ci->size / (ci->num_stripes -2);
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else if (ci->type & BTRFS_BLOCK_GROUP_RAID10)
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return ci->size / ci->num_stripes;
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return ci->size;
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}
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/*
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* This function print the results of the command btrfs fi disk-usage
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* in tabular format
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*/
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static void _cmd_filesystem_disk_usage_tabular(int mode,
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struct btrfs_ioctl_space_args *sargs,
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struct chunk_info *chunks_info_ptr,
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int chunks_info_count,
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struct disk_info *disks_info_ptr,
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int disks_info_count)
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{
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int i;
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u64 total_unused = 0;
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struct string_table *matrix = 0;
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int ncols, nrows;
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ncols = sargs->total_spaces + 2;
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nrows = 2 + 1 + disks_info_count + 1 + 2;
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matrix = table_create(ncols, nrows);
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if (!matrix) {
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fprintf(stderr, "ERROR: not enough memory\n");
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return;
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}
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/* header */
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for (i = 0; i < sargs->total_spaces; i++) {
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const char *description;
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u64 flags = sargs->spaces[i].flags;
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description = btrfs_group_type_str(flags);
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table_printf(matrix, 1+i, 0, "<%s", description);
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}
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for (i = 0; i < sargs->total_spaces; i++) {
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const char *r_mode;
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u64 flags = sargs->spaces[i].flags;
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r_mode = btrfs_group_profile_str(flags);
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table_printf(matrix, 1+i, 1, "<%s", r_mode);
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}
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table_printf(matrix, 1+sargs->total_spaces, 1, "<Unallocated");
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/* body */
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for (i = 0 ; i < disks_info_count ; i++) {
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int k, col;
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char *p;
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u64 total_allocated = 0, unused;
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p = strrchr(disks_info_ptr[i].path, '/');
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if (!p)
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p = disks_info_ptr[i].path;
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else
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p++;
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table_printf(matrix, 0, i+3, "<%s",
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disks_info_ptr[i].path);
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for (col = 1, k = 0 ; k < sargs->total_spaces ; k++) {
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u64 flags = sargs->spaces[k].flags;
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u64 devid = disks_info_ptr[i].devid;
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int j;
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u64 size = 0;
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for (j = 0 ; j < chunks_info_count ; j++) {
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if (chunks_info_ptr[j].type != flags )
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continue;
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if (chunks_info_ptr[j].devid != devid)
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continue;
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size += calc_chunk_size(chunks_info_ptr+j);
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}
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if (size)
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table_printf(matrix, col, i+3,
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">%s", df_pretty_sizes(size, mode));
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else
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table_printf(matrix, col, i+3, ">-");
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total_allocated += size;
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col++;
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}
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unused = get_partition_size(disks_info_ptr[i].path) -
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total_allocated;
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table_printf(matrix, sargs->total_spaces + 1, i + 3,
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">%s", df_pretty_sizes(unused, mode));
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total_unused += unused;
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}
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for (i = 0; i <= sargs->total_spaces; i++)
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table_printf(matrix, i + 1, disks_info_count + 3, "=");
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/* footer */
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table_printf(matrix, 0, disks_info_count + 4, "<Total");
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for (i = 0; i < sargs->total_spaces; i++)
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table_printf(matrix, 1 + i, disks_info_count + 4,
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">%s",
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df_pretty_sizes(sargs->spaces[i].total_bytes, mode));
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table_printf(matrix, sargs->total_spaces+1, disks_info_count+4,
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">%s", df_pretty_sizes(total_unused, mode));
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table_printf(matrix, 0, disks_info_count+5, "<Used");
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for (i = 0; i < sargs->total_spaces; i++)
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table_printf(matrix, 1+i, disks_info_count+5, ">%s",
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df_pretty_sizes(sargs->spaces[i].used_bytes, mode));
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table_dump(matrix);
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table_free(matrix);
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}
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/*
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* This function prints the unused space per every disk
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*/
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static void print_unused(struct chunk_info *info_ptr,
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int info_count,
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struct disk_info *disks_info_ptr,
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int disks_info_count,
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int mode)
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{
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int i;
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for (i = 0 ; i < disks_info_count ; i++) {
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int j;
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u64 total = 0;
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for (j = 0 ; j < info_count ; j++)
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if (info_ptr[j].devid == disks_info_ptr[i].devid)
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total += calc_chunk_size(info_ptr+j);
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printf(" %s\t%10s\n",
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disks_info_ptr[i].path,
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df_pretty_sizes(disks_info_ptr[i].size - total, mode));
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}
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}
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/*
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* This function prints the allocated chunk per every disk
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*/
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static void print_chunk_disks(u64 chunk_type,
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struct chunk_info *chunks_info_ptr,
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int chunks_info_count,
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struct disk_info *disks_info_ptr,
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int disks_info_count,
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int mode)
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{
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int i;
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for (i = 0 ; i < disks_info_count ; i++) {
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int j;
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u64 total = 0;
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for (j = 0 ; j < chunks_info_count ; j++) {
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if (chunks_info_ptr[j].type != chunk_type)
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continue;
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if (chunks_info_ptr[j].devid != disks_info_ptr[i].devid)
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continue;
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total += calc_chunk_size(&(chunks_info_ptr[j]));
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//total += chunks_info_ptr[j].size;
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}
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if (total > 0)
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printf(" %s\t%10s\n",
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disks_info_ptr[i].path,
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df_pretty_sizes(total, mode));
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}
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}
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/*
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* This function print the results of the command btrfs fi disk-usage
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* in linear format
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*/
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static void _cmd_filesystem_disk_usage_linear(int mode,
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struct btrfs_ioctl_space_args *sargs,
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struct chunk_info *info_ptr,
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int info_count,
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struct disk_info *disks_info_ptr,
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int disks_info_count)
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{
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int i;
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for (i = 0; i < sargs->total_spaces; i++) {
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const char *description;
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const char *r_mode;
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u64 flags = sargs->spaces[i].flags;
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description = btrfs_group_type_str(flags);
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r_mode = btrfs_group_profile_str(flags);
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printf("%s,%s: Size:%s, ",
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description,
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r_mode,
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df_pretty_sizes(sargs->spaces[i].total_bytes ,
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mode));
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printf("Used:%s\n",
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df_pretty_sizes(sargs->spaces[i].used_bytes,
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mode));
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print_chunk_disks(flags, info_ptr, info_count,
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disks_info_ptr, disks_info_count,
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mode);
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printf("\n");
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}
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printf("Unallocated:\n");
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print_unused(info_ptr, info_count,
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disks_info_ptr, disks_info_count,
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mode);
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}
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static int _cmd_filesystem_disk_usage(int fd, char *path, int mode, int tabular)
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{
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struct btrfs_ioctl_space_args *sargs = 0;
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int info_count = 0;
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struct chunk_info *info_ptr = 0;
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struct disk_info *disks_info_ptr = 0;
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int disks_info_count = 0;
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int ret = 0;
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if (load_chunk_info(fd, &info_ptr, &info_count) ||
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load_disks_info(fd, &disks_info_ptr, &disks_info_count)) {
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ret = -1;
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goto exit;
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}
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if ((sargs = load_space_info(fd, path)) == NULL) {
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ret = -1;
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goto exit;
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}
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if (tabular)
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_cmd_filesystem_disk_usage_tabular(mode, sargs,
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info_ptr, info_count,
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disks_info_ptr, disks_info_count);
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else
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_cmd_filesystem_disk_usage_linear(mode, sargs,
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info_ptr, info_count,
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disks_info_ptr, disks_info_count);
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exit:
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if (sargs)
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free(sargs);
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if (disks_info_ptr)
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free(disks_info_ptr);
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if (info_ptr)
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free(info_ptr);
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return ret;
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}
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const char * const cmd_filesystem_disk_usage_usage[] = {
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"btrfs filesystem disk-usage [-b][-t] <path> [<path>..]",
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"Show in which disk the chunks are allocated.",
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"",
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"-b\tSet byte as unit",
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"-t\tShow data in tabular format",
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NULL
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};
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int cmd_filesystem_disk_usage(int argc, char **argv)
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{
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int flags = DF_HUMAN_UNIT;
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int i, more_than_one = 0;
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int tabular = 0;
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optind = 1;
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while (1) {
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char c = getopt(argc, argv, "bt");
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if (c < 0)
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break;
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switch (c) {
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case 'b':
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flags &= ~DF_HUMAN_UNIT;
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break;
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case 't':
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tabular = 1;
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break;
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default:
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usage(cmd_filesystem_disk_usage_usage);
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}
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}
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if (check_argc_min(argc - optind, 1)) {
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usage(cmd_filesystem_disk_usage_usage);
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return 21;
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}
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for (i = optind; i < argc ; i++) {
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int r, fd;
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DIR *dirstream = NULL;
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if (more_than_one)
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printf("\n");
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fd = open_file_or_dir(argv[i], &dirstream);
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if (fd < 0) {
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fprintf(stderr, "ERROR: can't access to '%s'\n",
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argv[1]);
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return 12;
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}
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r = _cmd_filesystem_disk_usage(fd, argv[i], flags, tabular);
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close_file_or_dir(fd, dirstream);
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if (r)
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return r;
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more_than_one = 1;
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}
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return 0;
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}
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@ -22,4 +22,7 @@
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extern const char * const cmd_filesystem_df_usage[];
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int cmd_filesystem_df(int argc, char **argv);
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extern const char * const cmd_filesystem_disk_usage_usage[];
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int cmd_filesystem_disk_usage(int argc, char **argv);
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#endif
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@ -1298,6 +1298,9 @@ const struct cmd_group filesystem_cmd_group = {
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{ "balance", cmd_balance, NULL, &balance_cmd_group, 1 },
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{ "resize", cmd_resize, cmd_resize_usage, NULL, 0 },
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{ "label", cmd_label, cmd_label_usage, NULL, 0 },
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{ "disk-usage", cmd_filesystem_disk_usage,
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cmd_filesystem_disk_usage_usage, NULL, 0 },
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NULL_CMD_STRUCT
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}
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};
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16
utils.c
16
utils.c
@ -2505,3 +2505,19 @@ u64 disk_size(char *path)
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else
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return sfs.f_bsize * sfs.f_blocks;
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}
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u64 get_partition_size(char *dev)
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{
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u64 result;
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int fd = open(dev, O_RDONLY);
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if (fd < 0)
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return 0;
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if (ioctl(fd, BLKGETSIZE64, &result) < 0) {
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close(fd);
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return 0;
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}
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close(fd);
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return result;
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}
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5
utils.h
5
utils.h
@ -135,6 +135,11 @@ int get_device_info(int fd, u64 devid,
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struct btrfs_ioctl_dev_info_args *di_args);
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int test_uuid_unique(char *fs_uuid);
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u64 disk_size(char *path);
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int get_device_info(int fd, u64 devid,
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struct btrfs_ioctl_dev_info_args *di_args);
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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);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user