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#include <stdio.h>
#include <sys/ioctl.h>
#include <uuid/uuid.h>
#include "ccan/darray/darray.h"
#include "linux/sort.h"
#include "libbcachefs/bcachefs_ioctl.h"
#include "libbcachefs/opts.h"
#include "cmds.h"
#include "libbcachefs.h"
static void print_dev_usage_type(const char *type,
unsigned bucket_size,
u64 buckets, u64 sectors,
enum units units)
{
u64 frag = max((s64) buckets * bucket_size - (s64) sectors, 0LL);
printf_pad(20, " %s:", type);
printf(" %15s %15llu %15s\n",
pr_units(sectors, units),
buckets,
pr_units(frag, units));
}
static void print_dev_usage(struct bchfs_handle fs,
struct dev_name *d,
enum units units)
{
struct bch_ioctl_dev_usage u = bchu_dev_usage(fs, d->idx);
unsigned i;
printf("\n");
printf_pad(20, "%s (device %u):", d->label ?: "(no label)", d->idx);
printf("%30s%16s\n", d->dev ?: "(device not found)", bch2_member_states[u.state]);
printf("%-20s%16s%16s%16s\n",
"", "data", "buckets", "fragmented");
for (i = BCH_DATA_sb; i < BCH_DATA_NR; i++)
print_dev_usage_type(bch2_data_types[i],
u.bucket_size,
u.buckets[i],
u.sectors[i],
units);
print_dev_usage_type("erasure coded",
u.bucket_size,
u.ec_buckets,
u.ec_sectors,
units);
printf_pad(20, " available:");
printf(" %15s %15llu\n",
pr_units(u.available_buckets * u.bucket_size, units),
u.available_buckets);
printf_pad(20, " capacity:");
printf(" %15s %15llu\n",
pr_units(u.nr_buckets * u.bucket_size, units),
u.nr_buckets);
}
static int dev_by_label_cmp(const void *_l, const void *_r)
{
const struct dev_name *l = _l, *r = _r;
return (l->label && r->label
? strcmp(l->label, r->label) : 0) ?:
(l->dev && r->dev
? strcmp(l->dev, r->dev) : 0) ?:
cmp_int(l->idx, r->idx);
}
static struct dev_name *dev_idx_to_name(dev_names *dev_names, unsigned idx)
{
struct dev_name *dev;
darray_foreach(dev, *dev_names)
if (dev->idx == idx)
return dev;
return NULL;
}
static void print_replicas_usage(const struct bch_replicas_usage *r,
dev_names *dev_names, enum units units)
{
unsigned i;
if (!r->sectors)
return;
char devs[4096], *d = devs;
*d++ = '[';
for (i = 0; i < r->r.nr_devs; i++) {
unsigned dev_idx = r->r.devs[i];
struct dev_name *dev = dev_idx_to_name(dev_names, dev_idx);
if (i)
*d++ = ' ';
d += dev && dev->dev
? sprintf(d, "%s", dev->dev)
: sprintf(d, "%u", dev_idx);
}
*d++ = ']';
*d++ = '\0';
printf_pad(16, "%s: ", bch2_data_types[r->r.data_type]);
printf_pad(16, "%u/%u ", r->r.nr_required, r->r.nr_devs);
printf_pad(32, "%s ", devs);
printf(" %s\n", pr_units(r->sectors, units));
}
#define for_each_usage_replica(_u, _r) \
for (_r = (_u)->replicas; \
_r != (void *) (_u)->replicas + (_u)->replica_entries_bytes;\
_r = replicas_usage_next(_r), \
BUG_ON((void *) _r > (void *) (_u)->replicas + (_u)->replica_entries_bytes))
static void print_fs_usage(const char *path, enum units units)
{
unsigned i;
char uuid[40];
struct bchfs_handle fs = bcache_fs_open(path);
struct dev_name *dev;
dev_names dev_names = bchu_fs_get_devices(fs);
struct bch_ioctl_fs_usage *u = bchu_fs_usage(fs);
uuid_unparse(fs.uuid.b, uuid);
printf("Filesystem %s:\n", uuid);
printf("%-20s%12s\n", "Size:", pr_units(u->capacity, units));
printf("%-20s%12s\n", "Used:", pr_units(u->used, units));
printf("%-20s%12s\n", "Online reserved:", pr_units(u->online_reserved, units));
printf("\n");
printf("%-16s%-16s%s\n", "Data type", "Required/total", "Devices");
for (i = 0; i < BCH_REPLICAS_MAX; i++) {
if (!u->persistent_reserved[i])
continue;
printf_pad(16, "%s: ", "reserved");
printf_pad(16, "%u/%u ", 1, i);
printf_pad(32, "[] ");
printf("%s\n", pr_units(u->persistent_reserved[i], units));
}
struct bch_replicas_usage *r;
for_each_usage_replica(u, r)
if (r->r.data_type < BCH_DATA_user)
print_replicas_usage(r, &dev_names, units);
for_each_usage_replica(u, r)
if (r->r.data_type == BCH_DATA_user &&
r->r.nr_required <= 1)
print_replicas_usage(r, &dev_names, units);
for_each_usage_replica(u, r)
if (r->r.data_type == BCH_DATA_user &&
r->r.nr_required > 1)
print_replicas_usage(r, &dev_names, units);
for_each_usage_replica(u, r)
if (r->r.data_type > BCH_DATA_user)
print_replicas_usage(r, &dev_names, units);
free(u);
sort(&darray_item(dev_names, 0), darray_size(dev_names),
sizeof(darray_item(dev_names, 0)), dev_by_label_cmp, NULL);
darray_foreach(dev, dev_names)
print_dev_usage(fs, dev, units);
darray_foreach(dev, dev_names) {
free(dev->dev);
free(dev->label);
}
darray_free(dev_names);
bcache_fs_close(fs);
}
int fs_usage(void)
{
puts("bcachefs fs - manage a running filesystem\n"
"Usage: bcachefs fs <CMD> [OPTION]... path\n"
"\n"
"Commands:\n"
" usage show disk usage\n"
"\n"
"Report bugs to <linux-bcachefs@vger.kernel.org>");
return 0;
}
int cmd_fs_usage(int argc, char *argv[])
{
enum units units = BYTES;
char *fs;
int opt;
while ((opt = getopt(argc, argv, "h")) != -1)
switch (opt) {
case 'h':
units = HUMAN_READABLE;
break;
}
args_shift(optind);
if (!argc) {
print_fs_usage(".", units);
} else {
while ((fs = arg_pop()))
print_fs_usage(fs, units);
}
return 0;
}
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