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snapraid/cmdline/status.c

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/*
* Copyright (C) 2013 Andrea Mazzoleni
*
* 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, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will 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, see <http://www.gnu.org/licenses/>.
*/
#include "portable.h"
#include "support.h"
#include "elem.h"
#include "state.h"
#include "parity.h"
#include "handle.h"
#include "raid/raid.h"
/****************************************************************************/
/* status */
unsigned day_ago(time_t ref, time_t now)
{
return (now - ref) / (24 * 3600);
}
#define GRAPH_COLUMN 70
#define GRAPH_ROW 15
static unsigned perc(uint64_t part, uint64_t total)
{
if (!total)
return 0;
return (unsigned)(part * 100 / total);
}
/**
* Bit used to mark unscrubbed time info.
*/
#define TIME_NEW 1
int state_status(struct snapraid_state* state)
{
block_off_t blockmax;
block_off_t i;
time_t* timemap;
time_t now;
block_off_t bad;
block_off_t bad_first;
block_off_t bad_last;
block_off_t rehash;
block_off_t count;
unsigned l;
unsigned dayoldest, daymedian, daynewest;
unsigned bar_scrubbed[GRAPH_COLUMN];
unsigned bar_new[GRAPH_COLUMN];
unsigned barpos;
unsigned barmax;
time_t oldest, newest, median;
unsigned x, y;
tommy_node* node_disk;
unsigned file_count;
unsigned file_fragmented;
unsigned extra_fragment;
unsigned file_zerosubsecond;
uint64_t file_size;
uint64_t file_block_count;
uint64_t file_block_free;
block_off_t parity_block_free;
unsigned unsynced_blocks;
unsigned unscrubbed_blocks;
uint64_t all_wasted;
int free_not_zero;
/* get the present time */
now = time(0);
/* keep track if at least a free info is available */
free_not_zero = 0;
blockmax = parity_allocated_size(state);
log_tag("summary:block_size:%u\n", state->block_size);
log_tag("summary:parity_block_count:%u\n", blockmax);
/* get the minimum parity free space */
parity_block_free = state->parity[0].free_blocks;
for (l = 0; l < state->level; ++l) {
log_tag("summary:parity_block_total:%s:%u\n", lev_config_name(l), state->parity[l].total_blocks);
log_tag("summary:parity_block_free:%s:%u\n", lev_config_name(l), state->parity[l].free_blocks);
if (state->parity[l].free_blocks < parity_block_free)
parity_block_free = state->parity[l].free_blocks;
if (state->parity[l].free_blocks != 0)
free_not_zero = 1;
}
log_tag("summary:parity_block_free_min:%u\n", parity_block_free);
printf("SnapRAID status report:\n");
printf("\n");
printf(" Files Fragmented Excess Wasted Used Free Use Name\n");
printf(" Files Fragments GB GB GB\n");
/* count fragments */
file_count = 0;
file_size = 0;
file_block_count = 0;
file_block_free = 0;
file_fragmented = 0;
extra_fragment = 0;
file_zerosubsecond = 0;
all_wasted = 0;
for (node_disk = state->disklist; node_disk != 0; node_disk = node_disk->next) {
struct snapraid_disk* disk = node_disk->data;
tommy_node* node;
block_off_t j;
unsigned disk_file_count = 0;
unsigned disk_file_fragmented = 0;
unsigned disk_extra_fragment = 0;
unsigned disk_file_zerosubsecond = 0;
block_off_t disk_block_count = 0;
uint64_t disk_file_size = 0;
block_off_t disk_block_latest_used = 0;
block_off_t disk_block_max_by_space;
block_off_t disk_block_max_by_parity;
block_off_t disk_block_max;
int64_t wasted;
/* for each file in the disk */
node = disk->filelist;
while (node) {
struct snapraid_file* file;
file = node->data;
node = node->next; /* next node */
if (file->mtime_nsec == STAT_NSEC_INVALID
|| file->mtime_nsec == 0
) {
++file_zerosubsecond;
++disk_file_zerosubsecond;
if (disk_file_zerosubsecond < 50)
log_tag("zerosubsecond:%s:%s: \n", disk->name, file->sub);
if (disk_file_zerosubsecond == 50)
log_tag("zerosubsecond:%s:%s: (more follow)\n", disk->name, file->sub);
}
/* check fragmentation */
if (file->blockmax != 0) {
block_off_t prev_pos;
block_off_t last_pos;
int fragmented;
fragmented = 0;
prev_pos = fs_file2par_get(disk, file, 0);
for (j = 1; j < file->blockmax; ++j) {
block_off_t parity_pos = fs_file2par_get(disk, file, j);
if (prev_pos + 1 != parity_pos) {
fragmented = 1;
++extra_fragment;
++disk_extra_fragment;
}
prev_pos = parity_pos;
}
/* keep track of latest block used */
last_pos = fs_file2par_get(disk, file, file->blockmax - 1);
if (last_pos > disk_block_latest_used) {
disk_block_latest_used = last_pos;
}
if (fragmented) {
++file_fragmented;
++disk_file_fragmented;
}
disk_block_count += file->blockmax;
}
/* count files */
++file_count;
++disk_file_count;
file_size += file->size;
file_block_count += file->blockmax;
disk_file_size += file->size;
}
if (disk->free_blocks != 0)
free_not_zero = 1;
/* get the free block info */
disk_block_max_by_space = disk_block_count + disk->free_blocks;
disk_block_max_by_parity = blockmax + parity_block_free;
/* the maximum usable space in a disk is limited by the smallest */
/* of the disk size and the parity size */
/* the wasted space is the space that we have to leave */
/* free on the data disk, when the parity is filled up */
if (disk_block_max_by_space < disk_block_max_by_parity) {
disk_block_max = disk_block_max_by_space;
} else {
disk_block_max = disk_block_max_by_parity;
}
/* wasted space is the difference of the two maximum size */
/* if negative, it's extra space available in parity */
wasted = (int64_t)disk_block_max_by_space - (int64_t)disk_block_max_by_parity;
wasted *= state->block_size;
if (wasted > 0)
all_wasted += wasted;
file_block_free += disk_block_max - disk_block_count;
printf("%8u", disk_file_count);
printf("%8u", disk_file_fragmented);
printf("%8u", disk_extra_fragment);
if (wasted < -100LL * GIGA) {
printf(" -");
} else {
printf("%8.1f", (double)wasted / GIGA);
}
printf("%8" PRIu64, disk_file_size / GIGA);
if (disk_block_max == 0 && disk_block_count == 0) {
/* if the disk is empty and we don't have the free space info */
printf(" -");
printf(" - ");
} else {
printf("%8" PRIu64, (disk_block_max - disk_block_count) * (uint64_t)state->block_size / GIGA);
printf(" %3u%%", perc(disk_block_count, disk_block_max));
}
printf(" %s\n", disk->name);
log_tag("summary:disk_file_count:%s:%u\n", disk->name, disk_file_count);
log_tag("summary:disk_block_count:%s:%u\n", disk->name, disk_block_count);
log_tag("summary:disk_fragmented_file_count:%s:%u\n", disk->name, disk_file_fragmented);
log_tag("summary:disk_excess_fragment_count:%s:%u\n", disk->name, disk_extra_fragment);
log_tag("summary:disk_zerosubsecond_file_count:%s:%u\n", disk->name, disk_file_zerosubsecond);
log_tag("summary:disk_file_size:%s:%" PRIu64 "\n", disk->name, disk_file_size);
log_tag("summary:disk_block_allocated:%s:%u\n", disk->name, disk_block_latest_used + 1);
log_tag("summary:disk_block_total:%s:%u\n", disk->name, disk->total_blocks);
log_tag("summary:disk_block_free:%s:%u\n", disk->name, disk->free_blocks);
log_tag("summary:disk_block_max_by_space:%s:%u\n", disk->name, disk_block_max_by_space);
log_tag("summary:disk_block_max_by_parity:%s:%u\n", disk->name, disk_block_max_by_parity);
log_tag("summary:disk_block_max:%s:%u\n", disk->name, disk_block_max);
log_tag("summary:disk_space_wasted:%s:%" PRId64 "\n", disk->name, wasted);
}
/* totals */
printf(" --------------------------------------------------------------------------\n");
printf("%8u", file_count);
printf("%8u", file_fragmented);
printf("%8u", extra_fragment);
printf("%8.1f", (double)all_wasted / GIGA);
printf("%8" PRIu64, file_size / GIGA);
printf("%8" PRIu64, file_block_free * state->block_size / GIGA);
printf(" %3u%%", perc(file_block_count, file_block_count + file_block_free));
printf("\n");
/* warn about invalid data free info */
if (!free_not_zero)
printf("\nWARNING! Free space info will be valid after the first sync.\n");
log_tag("summary:file_count:%u\n", file_count);
log_tag("summary:file_block_count:%" PRIu64 "\n", file_block_count);
log_tag("summary:fragmented_file_count:%u\n", file_fragmented);
log_tag("summary:excess_fragment_count:%u\n", extra_fragment);
log_tag("summary:zerosubsecond_file_count:%u\n", file_zerosubsecond);
log_tag("summary:file_size:%" PRIu64 "\n", file_size);
log_tag("summary:parity_size:%" PRIu64 "\n", blockmax * (uint64_t)state->block_size);
log_tag("summary:parity_size_max:%" PRIu64 "\n", (blockmax + parity_block_free) * (uint64_t)state->block_size);
log_tag("summary:hash:%s\n", hash_config_name(state->hash));
log_tag("summary:prev_hash:%s\n", hash_config_name(state->prevhash));
log_tag("summary:best_hash:%s\n", hash_config_name(state->besthash));
log_flush();
/* copy the info a temp vector, and count bad/rehash/unsynced blocks */
timemap = malloc_nofail(blockmax * sizeof(time_t));
bad = 0;
bad_first = 0;
bad_last = 0;
count = 0;
rehash = 0;
unsynced_blocks = 0;
unscrubbed_blocks = 0;
log_tag("block_count:%u\n", blockmax);
for (i = 0; i < blockmax; ++i) {
int one_invalid;
int one_valid;
snapraid_info info = info_get(&state->infoarr, i);
/* for each disk */
one_invalid = 0;
one_valid = 0;
for (node_disk = state->disklist; node_disk != 0; node_disk = node_disk->next) {
struct snapraid_disk* disk = node_disk->data;
struct snapraid_block* block = fs_par2block_find(disk, i);
if (block_has_file(block))
one_valid = 1;
if (block_has_invalid_parity(block))
one_invalid = 1;
}
/* if both valid and invalid, we need to update */
if (one_invalid && one_valid) {
++unsynced_blocks;
}
/* skip unused blocks */
if (info != 0) {
time_t scrub_time;
if (info_get_bad(info)) {
if (bad == 0)
bad_first = i;
bad_last = i;
++bad;
}
if (info_get_rehash(info))
++rehash;
scrub_time = info_get_time(info);
if (info_get_justsynced(info)) {
++unscrubbed_blocks;
/* mark the time as not scrubbed */
scrub_time |= TIME_NEW;
}
timemap[count++] = scrub_time;
}
if (state->opt.gui) {
if (info != 0)
log_tag("block:%u:%" PRIu64 ":%s:%s:%s:%s\n", i, (uint64_t)info_get_time(info), one_valid ? "used" : "", one_invalid ? "unsynced" : "", info_get_bad(info) ? "bad" : "", info_get_rehash(info) ? "rehash" : "");
else
log_tag("block_noinfo:%u:%s:%s\n", i, one_valid ? "used" : "", one_invalid ? "unsynced" : "");
}
}
log_tag("summary:has_unsynced:%u\n", unsynced_blocks);
log_tag("summary:has_unscrubbed:%u\n", unscrubbed_blocks);
log_tag("summary:has_rehash:%u\n", rehash);
log_tag("summary:has_bad:%u:%u:%u\n", bad, bad_first, bad_last);
log_flush();
if (!count) {
log_fatal("The array is empty.\n");
free(timemap);
return 0;
}
/* sort the info to get the time info */
qsort(timemap, count, sizeof(time_t), time_compare);
/* output the info map */
i = 0;
log_tag("info_count:%u\n", count);
while (i < count) {
unsigned j = i + 1;
while (j < count && timemap[i] == timemap[j])
++j;
if ((timemap[i] & TIME_NEW) == 0) {
log_tag("info_time:%" PRIu64 ":%u:scrubbed\n", (uint64_t)timemap[i], j - i);
} else {
log_tag("info_time:%" PRIu64 ":%u:new\n", (uint64_t)(timemap[i] & ~TIME_NEW), j - i);
}
i = j;
}
oldest = timemap[0];
median = timemap[count / 2];
newest = timemap[count - 1];
dayoldest = day_ago(oldest, now);
daymedian = day_ago(median, now);
daynewest = day_ago(newest, now);
/* compute graph limits */
barpos = 0;
barmax = 0;
for (i = 0; i < GRAPH_COLUMN; ++i) {
time_t limit;
unsigned step_scrubbed, step_new;
limit = oldest + (newest - oldest) * (i + 1) / GRAPH_COLUMN;
step_scrubbed = 0;
step_new = 0;
while (barpos < count && timemap[barpos] <= limit) {
if ((timemap[barpos] & TIME_NEW) != 0)
++step_new;
else
++step_scrubbed;
++barpos;
}
if (step_new + step_scrubbed > barmax)
barmax = step_new + step_scrubbed;
bar_scrubbed[i] = step_scrubbed;
bar_new[i] = step_new;
}
printf("\n\n");
/* print the graph */
for (y = 0; y < GRAPH_ROW; ++y) {
if (y == 0)
printf("%3u%%|", barmax * 100 / count);
else if (y == GRAPH_ROW - 1)
printf(" 0%%|");
else if (y == GRAPH_ROW / 2)
printf("%3u%%|", barmax * 50 / count);
else
printf(" |");
for (x = 0; x < GRAPH_COLUMN; ++x) {
unsigned pivot_upper = barmax * (GRAPH_ROW - y) / GRAPH_ROW;
unsigned pivot_lower = barmax * (GRAPH_ROW - 1 - y) / GRAPH_ROW;
unsigned both = bar_scrubbed[x] + bar_new[x];
unsigned scrubbed = bar_scrubbed[x];
if (both > pivot_upper) {
if (scrubbed > pivot_lower)
printf("*");
else
printf("o");
} else if (both > pivot_lower) {
if (scrubbed == both)
printf("*");
else
printf("o");
} else {
if (y == GRAPH_ROW - 1)
printf("_");
else
printf(" ");
}
}
printf("\n");
}
printf(" %3u days ago of the last scrub/sync %3u\n", dayoldest, daynewest);
printf("\n");
printf("The oldest block was scrubbed %u days ago, the median %u, the newest %u.\n", dayoldest, daymedian, daynewest);
printf("\n");
if (unsynced_blocks) {
printf("WARNING! The array is NOT fully synced.\n");
printf("You have a sync in progress at %u%%.\n", (blockmax - unsynced_blocks) * 100 / blockmax);
} else {
printf("No sync is in progress.\n");
}
if (unscrubbed_blocks) {
printf("The %u%% of the array is not scrubbed.\n", (unscrubbed_blocks * 100 + blockmax - 1) / blockmax);
} else {
printf("The full array was scrubbed at least one time.\n");
}
if (file_zerosubsecond) {
printf("You have %u files with zero sub-second timestamp.\n", file_zerosubsecond);
printf("Run the 'touch' command to set it to a not zero value.\n");
} else {
printf("No file has a zero sub-second timestamp.\n");
}
if (rehash) {
printf("You have a rehash in progress at %u%%.\n", (count - rehash) * 100 / count);
} else {
if (state->besthash != state->hash) {
printf("No rehash is in progress, but for optimal performance one is recommended.\n");
} else {
printf("No rehash is in progress or needed.\n");
}
}
if (bad) {
block_off_t bad_print;
printf("DANGER! In the array there are %u errors!\n\n", bad);
printf("They are from block %u to %u, specifically at blocks:", bad_first, bad_last);
/* print some of the errors */
bad_print = 0;
for (i = 0; i < blockmax; ++i) {
snapraid_info info = info_get(&state->infoarr, i);
/* skip unused blocks */
if (info == 0)
continue;
if (info_get_bad(info)) {
printf(" %u", i);
++bad_print;
}
if (bad_print > 100) {
printf(" and %u more...", bad - bad_print);
break;
}
}
printf("\n\n");
printf("To fix them use the command 'snapraid -e fix'.\n");
printf("The errors will disappear from the 'status' at the next 'scrub' command.\n");
} else {
printf("No error detected.\n");
}
/* free the temp vector */
free(timemap);
return 0;
}
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